CN104963652A - Self-sealing compressed packer - Google Patents
Self-sealing compressed packer Download PDFInfo
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- CN104963652A CN104963652A CN201510374178.7A CN201510374178A CN104963652A CN 104963652 A CN104963652 A CN 104963652A CN 201510374178 A CN201510374178 A CN 201510374178A CN 104963652 A CN104963652 A CN 104963652A
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Abstract
The invention discloses a self-sealing compressed packer. The sealing mode that compression rubber sleeve sealing and self-sealing leather cup sealing are combined is adopted. A compression rubber sleeve, a slips assembly, a self-sealing leather cup sealing assembly and a hydraulic cylinder assembly form a self-locking device in the setting process so that the packer with two layers of setting functions can be formed, and setting force is strong. Besides, setting of the self-sealing compressed packer is not limited by the hole deviation angle or the well track. After setting, the advantages that borne work pressure is high and the pressure difference range of borne pressure is wide can be guaranteed. Under different conditions, the setting capacity of the self-sealing compressed packer can not be affected. When releasing is needed, the self-sealing compressed packer carries out releasing by uplifting a tubular column, and setting can be achieved again after releasing. Setting construction work can be repeated when the packer enters a well once. The packer is suitable for fracturing and hydraulic pump liquid drainage combined construction and is also suitable for sleeve leakage finding, leakage checking, water injection and other construction work. The packer is suitable for setting in a vertical well, a deviated well and a highly-deviated well.
Description
Technical field
The present invention relates to oil-gas field development drilling downhole tool technical field, particularly one is from sealed compression packer.
Background technology
In Oil/gas Well separate stratum fracfturing, oil production by layer, acidifying, look for string, during the underground work such as envelope string, conventional packer has compression and expanding two type, the packer of this two type respectively has superiority in Downhole Construction, but for pressure break (acidifying) and flowing back by hydraulic pump join construct time, deblocking is there is in the setting difficulty of easy appearance and construction way, the situations such as bearing capacity difference, particularly along with drilling technique is constantly to high temperature, the progress of high pressure and complicated deep formation aspect, the working condition of oil gas well mining also becomes increasingly complex, this has higher requirement for the key tool-packer in underground work, and at horizontal well, the problem exposed in high angle hole construction is particularly outstanding.
Use in pressure break (acidifying) with flowing back by hydraulic pump combination operation process at present packer mainly RTTS, it also exists and sets success rate problem that is low, that cannot set in high angle hole and horizontal well; Do not limit by hole angle and well track although Y531 packer sets, it does not have slips braced structures, after open flow terminates, and the automatic deblocking of packer, and flowing back by hydraulic pump construction operation can not be completed simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of be applicable to straight well, inclined shaft and high angle hole pressure break and flowing back by hydraulic pump connection operation and once enter well can repeatedly repeat setting construction operation from sealed compression packer.
For this reason, technical scheme of the present invention is as follows:
One, from sealed compression packer, comprises top connection, central tube, outer tube, compression packing element, hydraulic pressure cylinder assembly, slip assemblies, self-styled cup packing assembly, lower contact, sealing shroud, compression stop collar and ball seat, wherein:
Described outer tube is sleeved on described central tube outer upper and described central tube is all fixedly connected with the lower end of described top connection with the top of described outer tube, on the downside of described outer tube, outer wall caves inward, described compression packing element is sleeved on described outer tube outer wall depression place makes its outer wall external diameter in the uncompressed state consistent with the external diameter of the upper casing pressure piston being positioned at its underpart with the external diameter of the described outer tube being located thereon portion, the sidewall of described outer tube is along the circumferential direction evenly formed with multiple sand control liquid pass hole, form the first annular space between described outer tube with described central tube and be communicated with inside pipe casing by described sand control liquid pass hole,
Described hydraulic pressure cylinder assembly comprises can the centrally upper casing pressure piston that axially moves back and forth of pipe and slips centrum piston, described upper casing pressure piston bush is contained in outside described outer sleeve bottom, described slips centrum piston bush is contained in the outside of described central tube, described upper casing pressure piston underside inwall caves inward to be formed and makes described upper casing pressure piston and the second annular space formed between central tube with form annular space between described outer tube with described central tube and be communicated with the first ring-shaped step that described slips centrum piston upper surface coordinates, , described slips centrum piston bottom end outer wall along the circumferential direction convexes to form the first support level coordinated with described upper casing pressure piston,
Described slip assemblies comprises centrum on slips, slips, slips hypocentrum, spacing ring, lock ring pressure cap, lock ring and seat card stay pipe, described spacing ring is set with and is fixed on described central tube outer wall and described slips centrum piston inwall caves inward and is formed with the second ring-shaped step coordinated with described spacing ring upper surface and formed spacing, limit described slips taper piston descending, on described slips, centrum is fixed on the lower end of described slips taper piston, described lock ring and described lock ring pressure cap are arranged on the gap formed between described slips taper piston and described central tube, described lock ring is set with and is movably fixed to outside described central tube, described lock ring pressure cap is press-fitted on described lock ring, described lock ring pressure cap is moved up and down in certain interval by described lock ring is spacing, described seat card stay pipe to be sleeved on outside described central tube and to be fixed on described lock ring pressure cap bottom, described slips hypocentrum is sleeved on described seat card stay pipe lower outside, on described slips, centrum and described slips hypocentrum are fixed on the top of described seat card stay pipe and the bottom of described seat card stay pipe respectively by multiple card shear pins and multiple deblocking shear pin, described slips is arranged in gathering sill that described slips is formed between centrum and described slips hypocentrum,
Further, lock ring described above is set with and is movably fixed to the technical scheme adopted outside described central tube and is specially: the inwall of described lock ring is formed with zigzag internal thread, described central tube outer wall is formed with the zigzag external screw thread with the zigzag screw-internal thread fit on described lock ring inwall, to be formed with the relative position between the zigzag internal thread on described lock ring inwall by the zigzag external screw thread on control centre's pipe outer wall and engage and non-engagement state, realize the self-locking of lock ring on central tube and unblock.
Described self-styled cup packing assembly comprises leather cup inner frame, leather cup purchasing ore, leather cup, leather cup wedging ring and setting shear pin cover, described leather cup inner frame is sleeved on outside described central tube, described leather cup purchasing ore is sleeved on outside described leather cup inner frame, and described leather cup purchasing ore inwall and described slips hypocentrum inwall are all fixed on described leather cup inner frame outer wall, described leather cup the rim of a bowl is sleeved on described central tube downwards;
Described lower contact is fixedly connected on described central tube lower end, described leather cup wedging ring is sleeved on described lower contact outer upper and is fixed in described lower contact by setting shear pin, described leather cup wedging ring top upwards extends to be made described leather cup be sleeved on described central tube and is arranged on described leather cup inner frame, in the cavity formed between described leather cup purchasing ore and described leather cup wedging ring, described sealing shroud is sleeved on described lower contact outer lower portion, described sealing shroud bottom outer wall convexes to form and coordinates and the second support level be fixedly connected with described leather cup wedging ring bottom, liquid passage was formed between described sealing shroud upper inside wall local dent and described lower contact outer wall, described lower contact sidewall is processed with through hole, described liquid passage of crossing is communicated with described lower contact inside by the through hole on described lower contact sidewall, ,
Described ball seat to be sleeved on described lower contact inwall and to be fixed in described lower contact by ball seat shear pin by described ball seat, described compression stop collar to be sleeved in described lower contact bottom outer wall and to be fixed in described lower contact by jackscrew by described compression stop collar, when when needs set, described leather cup wedging ring falls on compression stop collar with sealing shroud, through hole on described lower contact sidewall is communicated with inside pipe casing, and the working liquids in packer can be entered by the through hole on lower contact sidewall in the annular space space between sleeve pipe and packer.
Further, described outer tube and described between casing pressure piston, described on coordinate mutually between casing pressure piston and described slips taper piston, between described central tube and described slips taper piston, between described central tube and described leather cup inner frame, between described lower contact and described ball seat, between described leather cup wedging ring and described lower contact and between described leather cup wedging ring and described sealing shroud and form sealing.
Further, on described slips, centrum outer wall is formed and cooperatively interacts with described slips inwall and can make the conical surface of described slips upstroke.
Further, the shearing force that can bear that shear pin sat by described ball is greater than the shearing force that the setting shear pin on leather cup wedging ring can bear.
Further, between described top connection and described central tube, between described top connection and described outer tube, between described spacing ring inwall and described central tube outer wall, between described leather cup inner frame outer wall and described slips hypocentrum inwall, between described leather cup purchasing ore inwall and described leather cup inner frame outer wall, all adopt between described lower contact inwall and described central tube outer wall and between described compression stop collar inwall and described central tube outer wall and be threaded.
Compared with prior art, compression packing element should be adopted to seal the sealing means combined with self-styled cup packing from sealed compression packer, by compression packing element, slip assemblies, self-styled cup packing assembly, hydraulic pressure cylinder assembly set in process formed self-locking device composition there is the two-layer packer setting function, setting force is strong, and should not limit by hole angle and well track from setting of sealed compression packer, after setting, can ensure that the operating pressure of bearing is high, the advantage that pressure-bearing pressure differential range is wide, through checking, this can bear the reverse differential pressure of 70MPa forward pressure reduction and 35MPa from sealed compression packer, all can not should be affected from the ability that sets of sealed compression packer in varied situations, when needing deblocking, upper lifting pipe post mode deblocking should be adopted from sealed compression packer, solution is honored as a queen and can also be again set, once enter well and can repeatedly repeat setting construction operation, not only applicable pressure break and flowing back by hydraulic pump connection are constructed, also being suitable for sleeve pipe looks for leakage, test Lou and the construction operation such as water filling, be applicable to straight well, setting in inclined shaft and high angle hole.
Figure of description
Fig. 1 is the cross-sectional view from sealed compression packer of the present invention;
Fig. 2 is the structural representation being in the state of setting from sealed compression packer in sleeve pipe of the present invention.
In figure: 1, top connection; 2, central tube; 2-1, zigzag internal thread; 3, sand control liquid pass hole; 4, outer tube; 5, packing element assembly is compressed; 6, upper casing pressure piston; 7, hydraulic pressure cylinder assembly-slips taper piston; 8, spacing ring; 9, lock ring pressure cap; 10, lock ring; 11, seat card stay pipe; 12, centrum on slips; 12-1, seat card shear pin; 13, slips; 14, slips lower cone; 14-1, deblocking shear pin; 15, leather cup inner frame; 16, leather cup purchasing ore; 17, leather cup; 18, setting shear pin cover; 19, setting shear pin; 20, leather cup wedging ring; 21, lower contact; 21-1, excessively liquid passage; 22, ball sealer; 23, ball seat; 24, sealing shroud; 25, ball seat shear pin; 26, jackscrew; 27, stop collar is compressed;
Detailed description of the invention
Below in conjunction with accompanying drawing, the structure from sealed compression packer of the present invention is described in detail.
As shown in Fig. 1 ~ 2, should from sealed compression packer, comprise top connection 1, central tube 2, outer tube 4, compression packing element 5, hydraulic pressure cylinder assembly, slip assemblies, self-styled cup packing assembly, lower contact 21, sealing shroud 24, compression stop collar 27 and ball seat 23, wherein:
Described outer tube 4 is sleeved on described central tube 2 outer upper and described central tube 2 is all fixedly connected with the lower end of described top connection 1 with the top of described outer tube 4, on the downside of described outer tube 4, outer wall caves inward, described compression packing element 5 is sleeved on described outer tube 4 outer wall depression place, the sidewall of described outer tube 4 is along the circumferential direction evenly formed with multiple sand control liquid pass hole 3, forms the first annular space between described outer tube 4 with described central tube 2 and be communicated with inside pipe casing by described sand control liquid pass hole 3;
All adopt between described top connection 1 and described central tube 2 and between described top connection 1 and described outer tube 4 be threaded fixing.
Described hydraulic pressure cylinder assembly comprises casing pressure piston 6 and slips centrum piston 7, described upper casing pressure piston 6 is sleeved on described outer tube 4 bottom outside, described slips centrum piston 7 is sleeved on the outside of described central tube 2, on the downside of described upper casing pressure piston 6, inwall caves inward to be formed and makes described upper casing pressure piston 6 and the second annular space formed between central tube 2 with form annular space between described outer tube 4 with described central tube 2 and be communicated with the first ring-shaped step that described slips centrum piston 7 upper surface coordinates, , described slips centrum piston 7 bottom outer wall along the circumferential direction convexes to form the first support level coordinated with described upper casing pressure piston 6,
Described outer tube 4 and described between casing pressure piston 6, described between casing pressure piston 6 and described slips taper piston 7, and coordinate mutually between described central tube 2 and described slips taper piston 7 and form sealing;
Described hydraulic pressure cylinder assembly can pump along the axis of described central tube 2 and outer tube 4, when described hydraulic pressure cylinder assembly receives lower component extruding upstroke, described compression packing element 5 will receive extruding and compress simultaneously expanded radially vertically and contact realization with internal surface of sleeve pipe and set, when the casing pressure on packing element 5 top is higher than tubing pressure, the working liquids of high pressure can enter in the annular clearance between outer tube 4 and core pipe 2 by sand control liquid pass hole 3, and enter in the cavity that formed between hydraulic pressure cylinder assembly and central tube 2, upper casing pressure piston 6 can be oppressed and slips taper piston 7 produces the contrary relative motion of a direction of motion owing to being subject to hydraulic action, the pressure upstream being applied to casing pressure piston 6 compresses described compression packing element 5 and then strengthens the setting setting force of first floor, the downstream pressure being applied to slips taper piston 7 oppresses centrum 12 on slips, slips 13 is forced to be expanded along the conical surface upstroke slips 13 of centrum on slips 12, strengthen the setting force that the second layer is setting.Under any circumstance visible, all can not should be affected from the ability that sets of sealed compression packer;
Described slip assemblies comprises centrum 12 on slips, slips 13, slips hypocentrum 14, spacing ring 8, lock ring pressure cap 9, lock ring 10 and seat card stay pipe 11, described spacing ring 8 is set with and is fixed on described central tube 2 outer wall the second ring-shaped step being formed with and coordinating with described spacing ring 8 upper surface and described slips centrum piston 7 lower end inner wall caves inward, on described slips, centrum 12 is fixed on the lower end of described slips taper piston 7, described lock ring 10 and described lock ring pressure cap 9 are arranged on the gap formed between described slips taper piston 7 and described central tube 2, described lock ring 10 is set with and is movably fixed to outside described central tube 2, described lock ring pressure cap 9 is press-fitted on described lock ring 10, described lock ring pressure cap 9 is made to move up and down in certain interval by described lock ring 10 is spacing and fixes, specifically, the inwall of described lock ring 10 is formed with zigzag internal thread 2-1, described central tube 2 outer wall is formed with the zigzag external screw thread coordinated with the zigzag internal thread 2-1 on described lock ring 10 inwall, to be formed with the relative position between the zigzag internal thread 2-1 on described lock ring 10 inwall by the zigzag external screw thread on control centre's pipe 2 outer wall and engage and non-engagement state, realize lock ring 10 self-locking and unblock on central tube 2,
Described seat card stay pipe 11 to be sleeved on outside described central tube 2 and to be fixed on described lock ring pressure cap 9 bottom, , described slips hypocentrum 14 is sleeved on described seat card stay pipe 11 lower outside, on described slips, centrum 12 and described slips hypocentrum 14 are fixed on the top of described seat card stay pipe 11 and the bottom of described seat card stay pipe 11 respectively by multiple the card shear pin 12-1 along the circumferential direction distributed and multiple deblocking shear pin 14-1 of along the circumferential direction distributing, described slips 13 is arranged in the gathering sill of formation between centrum 12 and described slips hypocentrum 14 on described slips, particularly, on described slips, centrum 12 outer wall is formed and cooperatively interacts with described slips 13 inwall and can make the conical surface of described slips 13 upstroke,
In addition, complement each other to form sealing between described central tube 2 and described leather cup inner frame 15, between described spacing ring 8 inwall and described central tube 2 outer wall, employing is threaded fixing;
Described self-styled cup packing assembly comprises leather cup inner frame 15, leather cup purchasing ore 16, leather cup 17, leather cup wedging ring 20 and setting shear pin cover 18, described leather cup inner frame 15 is sleeved on outside described central tube 2, described leather cup purchasing ore 16 is sleeved on outside described leather cup inner frame 15, and described leather cup purchasing ore 16 inwall and described slips hypocentrum 14 inwall are all fixed on described leather cup inner frame 15 outer wall, described leather cup 17 the rim of a bowl is sleeved on described central tube 2 downwards;
Described lower contact 21 is fixedly connected on described central tube 2 lower end, described leather cup wedging ring 20 is sleeved on described lower contact 21 outer upper and is fixed in described lower contact 21 by setting shear pin 19, described leather cup wedging ring 20 top upwards extends to be made described leather cup 17 be sleeved on described central tube 2 and is arranged on described leather cup inner frame 15, in the cavity formed between described leather cup purchasing ore 16 and described leather cup wedging ring 20, described sealing shroud 24 is sleeved on described lower contact 21 outer lower portion, described sealing shroud 24 bottom outer wall convexes to form and coordinates and the second support level be fixedly connected with described leather cup wedging ring 20 bottom, liquid passage was formed between described sealing shroud 24 upper inside wall local dent and described lower contact 21 outer wall, described lower contact 21 sidewall is processed with through hole, the described liquid passage crossed is made to lead to the through hole that 21-1 crosses on described lower contact 21 sidewall and be communicated with described lower contact 21 is inner,
Seal with coordinating mutually to be formed between described leather cup wedging ring 20 and described sealing shroud 24 between described leather cup wedging ring 20 and described lower contact 21; Between described leather cup inner frame 15 outer wall and described slips hypocentrum 14 inwall with all adopt between described leather cup purchasing ore 16 inwall and described leather cup inner frame 15 outer wall be threaded fixing;
Described ball seat 23 to be sleeved on described lower contact 21 inwall and to be fixed in described lower contact 21 by ball seat shear pin 25 by described ball seat 23, and described compression stop collar 27 to be sleeved in described lower contact 21 bottom outer wall and to be fixed in described lower contact 21 by jackscrew 26 by described compression stop collar 27;
Wherein, described ball is sat shearing force that shear pin 25 can bear and is greater than the shearing force that setting shear pin 19 can bear.
Sealing is complemented each other to form between described lower contact 21 and described ball seat 23; All adopt between described lower contact 21 inwall and described central tube 2 outer wall and between described compression stop collar 27 inwall and described central tube 2 outer wall be threaded fixing.
Complement each other to form sealing between the above all parts to refer to specifically to be processed with at the contact side sidewall of all parts and place the sealing ring cover for seat of sealing ring to realize the sealing between all parts.
Be somebody's turn to do the operating principle from sealed compression packer:
Describedly enter well and carry out operation after sealed compression packer to require according to working design with working string (sleeve pipe and oil pipe) to install;
When needing setting in down-hole, drop into ball sealer 22, suppress in oil pipe, pressure increase in oil pipe, working liquids leads to 21-1 through liquid passage and is applied on sealing shroud 24, make its pressure-bearing break setting shear pin 19 drives leather cup wedging ring 20 descending simultaneously, leather cup wedging ring 20 described in the cause of release and the leather cup 17 be contracted in inside leather cup wedging ring 20, described leather cup 17 is expanded voluntarily and is contacted with internal surface of sleeve pipe, and described sealing shroud 24 stops when coming downwards on wedging ring spacing 27 descending, can not depart from device body, through hole on now lower contact 21 sidewall is in communication with the outside, continue to suppress in oil pipe, oil overpressure continues to increase, ball is sat shear pin 25 and is cut off, the descending separating device body that comes off of ball seat 23, now, packer inside is communicated with the oil pipe be connected to below described packer, and along with oil pipe inject working liquids pressure raise, working liquids is flowed out by the through hole on lower contact 21 sidewall and enters in well, working liquids is up by hydraulic action, when the pressure that oil pipe injects is higher than packer upper sleeve pressure, leather cup 17 pressure-bearing produces upward trend, promote slips lower cone 14 simultaneously and seat card stay pipe 11 together up, and by the seat card shear pin 12-1 that arranges present card stay pipe 11 top and then drive centrum 12 on slips, slips taper piston 7 and upper casing pressure piston 6 up, compression packing element 5 is compressed and contacts with internal surface of sleeve pipe that to realize first floor setting, when setting reach rated load after, seat card shear pin 12-1 is cut off, slips lower cone 14 loses support and continues up, compressing slips 13 is along the continuous up expansion block card of the conical surface of centrum on slips 12, strengthen the anchorage force with sleeve pipe, namely contact with internal surface of sleeve pipe and realize the second layer and set, the zigzag internal thread 2-1 simultaneously arranged on lock ring 10 inwall at present card stay pipe 11 top engages with the zigzag external screw thread on central tube, compression packing element 5 and slips 13 are locked at setting and seat card-like state, whole setting procedure completes, and can enter lower step operation.
What need to further illustrate is simultaneously, in above process known, when the pressure that oil pipe injects is higher than packer upper sleeve pressure, leather cup 17 pressure-bearing produces upward trend, promote the up expansion of slips 13, the anchorage force between internal surface of sleeve pipe must be strengthened, but, when the casing pressure on packing element 5 top is higher than tubing pressure, the working liquids of high pressure can enter in the annular clearance between outer tube 4 and core pipe 2 by sand control liquid pass hole 3, and enter in the cavity that formed between hydraulic pressure cylinder assembly and central tube 2, upper casing pressure piston 6 can be oppressed and slips taper piston 7 produces the contrary relative motion of a direction of motion owing to being subject to hydraulic action, the pressure upstream being applied to casing pressure piston 6 compresses described compression packing element 5 and then strengthens the setting setting force of first floor, the downstream pressure being applied to slips taper piston 7 oppresses centrum 12 on slips, slips 13 is forced to be expanded along the conical surface upstroke slips 13 of centrum on slips 12, strengthen the setting force that the second layer is setting.Under any circumstance visible, all can not should be affected from the ability that sets of sealed compression packer.
When needing deblocking after the end of job, on carry the tubing string that is connected to described top connection upper end and drive central tube 2 by top connection 1, lock ring 10, lock ring pressure cap 9, seat card stay pipe 11 is together up, the deblocking shear pin 14-1 be arranged on slips lower cone 14 is pulled off, the slips 13 being now also in anchoring states with internal surface of sleeve pipe is separated with described seat card stay pipe 11 because of slips lower cone 14 power, therefore leather cup can only drive centrum 12 on slips taper piston 7 and slips together up by seat card stay pipe 11, at this moment slips 13 loses support force and along the descending gathering sill of getting back to of the conical surface of centrum on slips 12 because of below, and compress packing element 5 also subsequently under the effect of its own resilient promote on casing pressure piston 6 times horizontal resets, this packer completes deblocking, described hydraulic pressure cylinder assembly and described slip assemblies get back to original state.
If if when needing again setting after removing seal for packer, implement by above putting the mode of putting tubing string, and carry out again setting as mentioned above.Transferring in tubing string process, utilizing leather cup 17 flooding that when descending and in well, liquid produces expanded, promotion slips 13 is up with internal surface of sleeve pipe grappling along cone, discharges tubing string suspending weight and compresses described compression packing element 5 and carry out setting.
In sum, content of the present invention is not limited in the above-described embodiments, and those skilled in the art guiding theory according to the present invention can propose other embodiment, and these embodiments all comprise within the scope of the present invention.
Claims (6)
1. one kind from sealed compression packer, it is characterized in that, comprise top connection (1), central tube (2), outer tube (4), compression packing element (5), hydraulic pressure cylinder assembly, slip assemblies, self-styled cup packing assembly, lower contact (21), sealing shroud (24), compression stop collar (27) and ball seat (23), wherein:
Described outer tube (4) is sleeved on described central tube (2) outer upper and described central tube (2) is all fixedly connected with the lower end of described top connection (1) with the top of described outer tube (4), described outer tube (4) downside outer wall caves inward, described compression packing element (5) is sleeved on described outer tube (4) outer wall depression place, the sidewall of described outer tube (4) is along the circumferential direction evenly formed with multiple sand control liquid pass hole (3), form the first annular space between described outer tube (4) with described central tube (2) and be communicated with inside pipe casing by described sand control liquid pass hole (3),
Described hydraulic pressure cylinder assembly comprises casing pressure piston (6) and slips centrum piston (7), described upper casing pressure piston (6) is sleeved on described outer tube (4) bottom outside, described slips centrum piston (7) is sleeved on the outside of described central tube (2), described upper casing pressure piston (6) downside inwall caves inward to be formed and to make described upper casing pressure piston (6) and the second annular space formed between central tube (2) with form annular space between described outer tube (4) with described central tube (2) and be communicated with the first ring-shaped step that described slips centrum piston (7) upper surface coordinates, described slips centrum piston (7) bottom outer wall along the circumferential direction convexes to form the first support level coordinated with described upper casing pressure piston (6),
Described slip assemblies comprises centrum on slips (12), slips (13), slips hypocentrum (14), spacing ring (8), lock ring pressure cap (9), lock ring (10) and seat card stay pipe (11), described spacing ring (8) is set with and is fixed on described central tube (2) outer wall the second ring-shaped step being formed with and coordinating with described spacing ring (8) upper surface and described slips centrum piston (7) lower end inner wall caves inward, on described slips, centrum (12) is fixed on the lower end of described slips taper piston (7), described lock ring (10) and described lock ring pressure cap (9) are arranged on the gap formed between described slips taper piston (7) and described central tube (2), described lock ring (10) is set with and is movably fixed to described central tube (2) outside, described lock ring pressure cap (9) is press-fitted on described lock ring (10), described lock ring pressure cap (9) is moved up and down in certain interval by described lock ring (10) is spacing, described seat card stay pipe (11) is sleeved on described central tube (2) outside and is fixed on described lock ring pressure cap (9) bottom, , described slips hypocentrum (14) is sleeved on described seat card stay pipe (11) lower outside, on described slips, centrum (12) and described slips hypocentrum (14) are fixed on the top of described seat card stay pipe (11) and the bottom of described seat card stay pipe (11) respectively by multiple card shear pins (12-1) and multiple deblocking shear pin (14-1), described slips (13) is arranged in the gathering sill of formation between centrum (12) and described slips hypocentrum (14) on described slips,
Described self-styled cup packing assembly comprises leather cup inner frame (15), leather cup purchasing ore (16), leather cup (17), leather cup wedging ring (20) and setting shear pin cover (18), described leather cup inner frame (15) is sleeved on described central tube (2) outside, described leather cup purchasing ore (16) is sleeved on described leather cup inner frame (15) outside, and described leather cup purchasing ore (16) inwall and described slips hypocentrum (14) inwall are all fixed on described leather cup inner frame (15) outer wall, described leather cup (17) the rim of a bowl is sleeved on described central tube (2) downwards,
Described lower contact (21) is fixedly connected on described central tube (2) lower end, described leather cup wedging ring (20) is sleeved on described lower contact (21) outer upper and is fixed in described lower contact (21) by setting shear pin (19), described leather cup wedging ring (20) top upwards extends makes described leather cup (17) be arranged on described leather cup inner frame (15), in the cavity formed between described leather cup purchasing ore (16) and described leather cup wedging ring (20), described sealing shroud (24) is sleeved on described lower contact (21) outer lower portion, described sealing shroud (24) bottom outer wall convexes to form and coordinates and the second support level be fixedly connected with described leather cup wedging ring (20) bottom, liquid passage (21-1) was formed between described sealing shroud (24) upper inside wall local dent and described lower contact (21) outer wall, described lower contact (21) sidewall is processed with through hole, described liquid passage (21-1) of crossing is communicated with described lower contact (21) inside by the through hole on described lower contact (21) sidewall,
Described ball seat (23) is sleeved on described lower contact (21) inwall and is also fixed in described lower contact (21) by ball seat shear pin (25) by described ball seat (23), and described compression stop collar (27) is sleeved in described lower contact (21) bottom outer wall and also described compression stop collar (27) is fixed in described lower contact (21) by jackscrew (26).
2. according to claim 1 from sealed compression packer, it is characterized in that, between described outer tube (4) and described upper casing pressure piston (6), between described upper casing pressure piston (6) and described slips taper piston (7), between described central tube (2) and described slips taper piston (7), between described central tube (2) and described leather cup inner frame (15), between described lower contact (21) and described ball seat (23), coordinate mutually between described leather cup wedging ring (20) and described lower contact (21) and between described leather cup wedging ring (20) and described sealing shroud (24) and form sealing.
3. according to claim 1 from sealed compression packer, it is characterized in that, the inwall of described lock ring (10) is formed with zigzag internal thread (2-1), described central tube (2) outer wall is formed with the zigzag external screw thread coordinated with the zigzag internal thread (2-1) on described lock ring (10) inwall, forms self-locking and unblock by the relative position between the zigzag external screw thread on control centre's pipe (2) outer wall and the zigzag internal thread (2-1) on described lock ring (10) inwall.
4. according to claim 1 from sealed compression packer, it is characterized in that, on described slips, centrum (12) outer wall is formed and cooperatively interacts with described slips (13) inwall and can make the conical surface of described slips (13) upstroke.
5. according to claim 1 from sealed compression packer, it is characterized in that, the shearing force that can bear that shear pin (25) sat by described ball is greater than the shearing force that the setting shear pin (19) on leather cup wedging ring (20) can bear.
6. according to claim 1 from sealed compression packer, it is characterized in that, between described top connection (1) and described central tube (2), between described top connection (1) and described outer tube (4), between described spacing ring (8) inwall and described central tube (2) outer wall, between described leather cup inner frame (15) outer wall and described slips hypocentrum (14) inwall, between described leather cup purchasing ore (16) inwall and described leather cup inner frame (15) outer wall, all adopt between described lower contact (21) inwall and described central tube (2) outer wall and between described compression stop collar (27) inwall and described central tube (2) outer wall and be threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510374178.7A CN104963652B (en) | 2015-06-30 | 2015-06-30 | From sealed compression packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510374178.7A CN104963652B (en) | 2015-06-30 | 2015-06-30 | From sealed compression packer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104963652A true CN104963652A (en) | 2015-10-07 |
| CN104963652B CN104963652B (en) | 2017-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510374178.7A Active CN104963652B (en) | 2015-06-30 | 2015-06-30 | From sealed compression packer |
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Cited By (14)
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| CN105464615A (en) * | 2015-12-31 | 2016-04-06 | 东营市福利德石油科技开发有限责任公司 | Parallel double-pipe packer for deepwater oil well |
| CN105507845A (en) * | 2015-12-31 | 2016-04-20 | 中国石油天然气股份有限公司 | Long-acting oil-separating packer for oil field |
| CN105545255A (en) * | 2015-12-31 | 2016-05-04 | 中国石油天然气股份有限公司 | Novel long-acting oil-separating production pipe column for oil field |
| CN106761538A (en) * | 2016-12-23 | 2017-05-31 | 中国石油天然气股份有限公司 | Long packing element packer for oil field isolation |
| CN108661592A (en) * | 2017-03-28 | 2018-10-16 | 中国石油天然气股份有限公司 | Oil pipe plug |
| CN110145273A (en) * | 2019-04-29 | 2019-08-20 | 国际 | A kind of oil field packer |
| CN110439500A (en) * | 2019-08-20 | 2019-11-12 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Pressure-relief self-sealing leather cup packer and using method thereof |
| CN110566154A (en) * | 2019-10-15 | 2019-12-13 | 荆州市赛瑞能源技术有限公司 | Ultra-short type removable hydraulic packer |
| CN110847845A (en) * | 2019-11-28 | 2020-02-28 | 中国石油集团川庆钻探工程有限公司 | But two-way slips recovery type hydraulic pressure packer |
| CN113417637A (en) * | 2021-06-18 | 2021-09-21 | 中国平煤神马能源化工集团有限责任公司 | Water pressurizing test system and method |
| CN113969760A (en) * | 2020-07-23 | 2022-01-25 | 中国石油天然气股份有限公司 | Electric channeling-checking leakage-finding device |
| CN115853459A (en) * | 2021-09-23 | 2023-03-28 | 中国石油天然气集团有限公司 | Self-sealing stopper for casing |
| CN117489293A (en) * | 2023-12-29 | 2024-02-02 | 中油博淏科技(天津)有限公司 | Packer with double sealing structures |
| CN117684910A (en) * | 2024-02-02 | 2024-03-12 | 盐城市弘通石油机械有限公司 | Efficient sand-prevention forced unclamping throttle |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464615A (en) * | 2015-12-31 | 2016-04-06 | 东营市福利德石油科技开发有限责任公司 | Parallel double-pipe packer for deepwater oil well |
| CN105507845A (en) * | 2015-12-31 | 2016-04-20 | 中国石油天然气股份有限公司 | Long-acting oil-separating packer for oil field |
| CN105545255A (en) * | 2015-12-31 | 2016-05-04 | 中国石油天然气股份有限公司 | Novel long-acting oil-separating production pipe column for oil field |
| CN105545255B (en) * | 2015-12-31 | 2018-05-04 | 中国石油天然气股份有限公司 | Novel long-acting oil-separating production pipe column for oil field |
| CN105464615B (en) * | 2015-12-31 | 2019-01-11 | 东营市福利德石油科技开发有限责任公司 | Deepwater wells parallel double tube packer |
| CN106761538A (en) * | 2016-12-23 | 2017-05-31 | 中国石油天然气股份有限公司 | Long packing element packer for oil field isolation |
| CN108661592A (en) * | 2017-03-28 | 2018-10-16 | 中国石油天然气股份有限公司 | Oil pipe plug |
| CN108661592B (en) * | 2017-03-28 | 2020-07-10 | 中国石油天然气股份有限公司 | Oil pipe plug |
| CN110145273B (en) * | 2019-04-29 | 2020-02-04 | 大庆丹诺石油科技开发有限公司 | Packer for oil field |
| CN110145273A (en) * | 2019-04-29 | 2019-08-20 | 国际 | A kind of oil field packer |
| CN110439500B (en) * | 2019-08-20 | 2024-03-01 | 中国石油天然气集团有限公司 | Self-sealing type packing packer capable of relieving pressure and application method thereof |
| CN110439500A (en) * | 2019-08-20 | 2019-11-12 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Pressure-relief self-sealing leather cup packer and using method thereof |
| CN110566154A (en) * | 2019-10-15 | 2019-12-13 | 荆州市赛瑞能源技术有限公司 | Ultra-short type removable hydraulic packer |
| CN110847845A (en) * | 2019-11-28 | 2020-02-28 | 中国石油集团川庆钻探工程有限公司 | But two-way slips recovery type hydraulic pressure packer |
| CN113969760A (en) * | 2020-07-23 | 2022-01-25 | 中国石油天然气股份有限公司 | Electric channeling-checking leakage-finding device |
| CN113969760B (en) * | 2020-07-23 | 2023-08-22 | 中国石油天然气股份有限公司 | Electric channeling checking and leakage finding device |
| CN113417637A (en) * | 2021-06-18 | 2021-09-21 | 中国平煤神马能源化工集团有限责任公司 | Water pressurizing test system and method |
| CN115853459A (en) * | 2021-09-23 | 2023-03-28 | 中国石油天然气集团有限公司 | Self-sealing stopper for casing |
| CN117489293A (en) * | 2023-12-29 | 2024-02-02 | 中油博淏科技(天津)有限公司 | Packer with double sealing structures |
| CN117489293B (en) * | 2023-12-29 | 2024-03-22 | 中油博淏科技(天津)有限公司 | Packer with double sealing structures |
| CN117684910A (en) * | 2024-02-02 | 2024-03-12 | 盐城市弘通石油机械有限公司 | Efficient sand-prevention forced unclamping throttle |
| CN117684910B (en) * | 2024-02-02 | 2024-05-14 | 盐城市弘通石油机械有限公司 | Efficient sand-prevention forced unclamping throttle |
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Effective date of registration: 20210210 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Huanghai Road 106 Bohai Drilling Engineering Co., Ltd. science and Technology Development Office Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |