CN205036327U - Gas drilling ground manifold connecting structure - Google Patents
Gas drilling ground manifold connecting structure Download PDFInfo
- Publication number
- CN205036327U CN205036327U CN201520783370.7U CN201520783370U CN205036327U CN 205036327 U CN205036327 U CN 205036327U CN 201520783370 U CN201520783370 U CN 201520783370U CN 205036327 U CN205036327 U CN 205036327U
- Authority
- CN
- China
- Prior art keywords
- gas
- ground
- sediment outflow
- reacting cycle
- drilling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 101
- 238000002347 injection Methods 0.000 claims abstract description 36
- 239000007924 injection Substances 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000007789 gas Substances 0.000 claims description 126
- 239000013049 sediment Substances 0.000 claims description 68
- 244000261422 Lysimachia clethroides Species 0.000 claims description 20
- 230000003628 erosive effect Effects 0.000 claims description 20
- 210000002445 nipple Anatomy 0.000 claims description 16
- 238000005070 sampling Methods 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 9
- 239000011435 rock Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 18
- 238000009826 distribution Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 238000007789 sealing Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 241000283216 Phocidae Species 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 239000008398 formation water Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012407 engineering method Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000010412 perfusion Effects 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a gas drilling ground manifold connection structure, include: the local surface manifold connection structure is applied to a full-well section self-suction type reverse circulation gas drilling system, the participation of tools such as a conventional single-wall drilling tool, a gas-water mixing joint and the like is not needed, the full-well section uses air as a circulation medium, reverse circulation can be formed without the participation of mud or other drilling fluids, and the gas injection unit is particularly suitable for well sections with serious water shortage and serious well leakage or incapable of implementing gas lift reverse circulation.
Description
Technical field
The utility model relates to oil and gas well drilling technical field, exactly relates to a kind of gas drilling manifold of ground syndeton.
Background technology
Air drilling significantly can improve the rate of penetration of the bad grounds such as lava, layer of gravel, clastic, carbonate rock, and the area application such as in Chongqing of Sichuan, average drilling speed improves 4 ~ 15 times.But when adopting direct circulation gas drilling (particularly major diameter well), equipment investment is large, occupation of land is many, air consumption is large, operation energy consumption is high, cost is high, as " well (500m) the gas drilling institute air demand 500m 26
3/ more than min, 171/2 " well institute air demand 300m
3/ min; Poor at borehole wall stability, or when formation water production is larger, increase tolerance and carry out gas drilling and exacerbate erosion to the borehole wall, increase borehole well instability possibility; Meanwhile, the ability of process formation water output problem is poor, if side by side layer cranny development (namely leakage mistake is returned and a large amount of water outlet in stratum), then be difficult to set up normal circulation, even if employing air-filling well-drilling, also easily occurring leaks does not leak the situation of sand, is difficult to ensure downhole safety; The application that these problems align recyclegas drilling well brings many restrictions.
The boring method of existing a kind of gas lift reverse circulation, if publication number is CN101929309A, publication date is that the Chinese patent literature on December 29th, 2010 discloses a kind of gas lift reverse circulation drilling process, its processing step is: 1. first unload double-walled kelly bar and fill liquid in core pipe, then reinstall double-walled kelly bar, 2. closed the high pressure valve in scum pipe exit, start air compressor machine air feed, 3. when admission pressure rises to 5.5-6MPa, then the high pressure valve in scum pipe exit is opened rapidly.Be a kind of need not all extract all drilling tools just can solve drill bit water inlet eye blocking gas lift reverse circulation drilling process.
Adopt above-mentioned patent document to be the prior art of representative, during embody rule, the method is (as 3 ~ 5m by a small amount of
3/ min) gas mixing wastewater with air joint in well to be in drill string liquid mixing, and the drilling fluid density utilizing drill string inside and outside is poor, realizes the reverse circulating boring method of drilling fluid.Although the method is lost in saving tolerance, saving equipment use amount and leakage and returned positive effect, mud must be used to circulate.Therefore, in formation leakage serious (such as solution cavity), well in the too low or well of mud liquid level when lack of water, gas lift reverse circulation cannot be implemented.Simultaneously, owing to needing mud circulation in well, therefore rock bit or PDC drill bit can only be used, and during deep drilling, the head of liquid of mud still there is chip hold down effect to shaft bottom, so deep drilling speed-increasing effect is not remarkable, this has certain limitation in oil, natural gas creep into.In addition, gas lift reverse circulation drilling well method also must use conventional single wall drilling rod and air water hybrid juction except using double wall drill tool.
Also has a kind of reverse circular technique of reaming major diameter cluster type down-hole hammer.These class methods are that the sealing device utilizing well head to install seals bore hole annulus, and the central passage of being suppressed by gas into double wall drill tool realizes reacting cycle sediment outflow.This engineering method is mainly used in colliery industry reaming and creeps into, and formation requires higher, if stratum cranny development, then annular pressure cannot be set up, and reacting cycle forms effect and also can be affected.Meanwhile, the rock crushing tool that this engineering method uses is cluster type down-hole hammer, and the structure of this instrument is complicated slightly, and maintaining and more bit change are slightly aobvious loaded down with trivial details.
Utility model content
The utility model is intended to for the defect existing for above-mentioned prior art and deficiency, a kind of gas drilling manifold of ground syndeton is provided, this manifold of ground syndeton is applied in full well section self-priming reacting cycle gas drilling system, do not need the participation of the instruments such as conventional single wall drilling tool, mixing wastewater with air joint, full well section air is as circulatory mediator, do not need the participation of mud or other drilling fluids can form reacting cycle yet, be particularly useful for serious water shortage, leakage serious or the well section of gas lift reverse circulation cannot be implemented.
The utility model realizes by adopting following technical proposals:
A kind of gas drilling manifold of ground syndeton, it is characterized in that: comprising: air injection unit, pressure release unit, flow meter, ground injecting gas manifold, high-pressure gas injection flexible pipe, erosion resistance gooseneck, high pressure reacting cycle sediment outflow flexible pipe, ground reacting cycle sediment outflow pipeline and direct circulation gas drilling sediment outflow pipeline
Wherein: described air injection unit is connected by high pressure line with pressure release unit, described flow meter is installed in the outlet of pressure release unit, and flow meter upstream connects pressure release unit, and downstream connects ground injecting gas manifold, and ground injecting gas manifold is connected with high-pressure gas injection flexible pipe;
The outlet of described erosion resistance gooseneck is connected with high pressure reacting cycle sediment outflow flexible pipe, high pressure reacting cycle sediment outflow flexible pipe is connected with ground reacting cycle sediment outflow pipeline, at the middle part of ground reacting cycle sediment outflow pipeline, a four-way is installed, the left end of four-way connects ground reacting cycle sediment outflow pipeline, right-hand member connects a threeway, upper end connects slush pump, and lower end connects ground injecting gas manifold; An outlet of described threeway is connected with direct circulation gas drilling sediment outflow pipeline, and another outlet of threeway is through to grit chamber;
Described erosion resistance gooseneck, high-pressure gas injection flexible pipe and direct circulation gas drilling sediment outflow pipeline are all connected on the structure of downhole assembly of full well section self-priming reacting cycle gas drilling system.
On the reacting cycle sediment outflow pipeline leading to grit chamber, sampling pipe nipple and dustfall water pipe nipple are installed.
Air injection unit provides gases at high pressure, comprises air compressor and supercharger.
The left end of four-way connects ground reacting cycle sediment outflow pipeline by valve C, right-hand member connects a threeway by valve E, upper end connects slush pump by valve D, and lower end connects ground injecting gas manifold by valve B, and ground injecting gas manifold is also provided with valve A between being connected with high-pressure gas injection flexible pipe.
Described high pressure refers to the pressure being not less than 21MPa.
Compared with prior art, the beneficial effect that reaches of the utility model is as follows:
1, adopt manifold of ground syndeton and structure of downhole assembly to combine the full well section self-priming reacting cycle gas drilling system for oil/gas drilling formed, full well section adopts double wall drill tool, does not need the participation of the instruments such as conventional single wall drilling tool, mixing wastewater with air joint; Full well section air, as circulatory mediator, does not need the participation of mud or other drilling fluids can form reacting cycle yet.Be applicable to serious water shortage, leakage serious or the well section of gas lift reverse circulation cannot be implemented; While improving drilling efficiency, save gas drilling tolerance, equipment use amount, reduce occupation area of equipment volume, save integrated cost, simultaneously for overcoming down-hole water outlet, leakage is lost to return provides a kind of new drilling technology.
2, the utility model is to whether not having particular/special requirement at annular space perfusion mud.Mud liquid level is too low in lack of water or well in formation leakage serious (such as solution cavity), well, still counterflush drilling can be realized.If perfusion mud in well, implementing counterflush drilling to the utility model also has positive role.
3, the utility model is the air reverse circulation drilling of full well section.Namely all double wall drill tool is adopted, when creeping into, shaft bottom landwaste all drains into earth's surface from double wall drill tool center sediment outflow passage, avoid in the process that air-flow returns on cutting carring and erosion is caused to the borehole wall, be conducive to preventing the generation that in troublesome zone drilling process, borehole wall perturbation caves in.
4, double wall drill tool center sediment outflow passage flow section amasss little many compared with ring-type basal area between the borehole wall and drill string.Therefore, needed for full well section air reverse circulation drilling, compressed air volume flow is relatively little, particularly when major diameter well section is crept into, more obviously.This is conducive to reducing equipment investment, reduce place area occupied, reduce demand to power and drilling fluid, save fuel consume.
5, the drilling well of formation water output ability calibration recyclegas is processed strong.During direct circulation gas drilling, be enough to make landwaste bonding agglomerating if formation water production reaches, then gathering in annular gap in well, sedimentation, formation mud cake ring, cause effect of hole cleaning poor.As processed not in time, causing lock of tool drilling the most at last, threatening downhole safety.Full well section reacting cycle gas drilling, landwaste returns along in drilling tool central passage, and on the sediment outflow passage of center, returning air-flow speed is higher, and wellbore clearance is effective, is conducive to the generation reducing mud drum.
6, the complete self-priming reacting cycle gas drilling of well section, drilling tool is all double wall drill tool, adopt reacting cycle rock crushing tool (reacting cycle air hammer, reacting cycle rock bit, reacting cycle PDC drill bit) simultaneously, gas and landwaste can not enter annular space substantially, therefore, when cranny development stratum is crept into, can avoid and reduce severe leakage.Time particularly water layer, drop ply are simultaneous, according to direct circulation gas drilling or air-filling well-drilling, easily occur that leakage is lost and return, leak and do not leak the situation of sand, be difficult to set up normal circulation.And adopt the self-priming reacting cycle gas drilling of full well section, then can effectively address this problem.Meanwhile, the utility model the need of carrying out sealing not special requirement to annular space, even if seal annular space without well mouth sealing device, still can form reacting cycle to well head place under the help of reacting cycle rock crushing tool with self sealing action.Certainly, if implement sealing to well head, implementing counterflush drilling to the utility model also has positive role.
7, when occurring that down-hole is complicated, direct circulation gas drilling and conventional mud drilling well can be switched at any time.
8, low pressure or under-voltage reservoir are often damaged by conventional mud drilling well, foam drilling, pressure-air drilling well.And adopting full well section self-priming reacting cycle gas drilling system, gas and landwaste can not enter stratum, and to low pressure, low permeability reservoir is pollution-free, zero injury.Meanwhile, upper returning air-flow flow velocity is high, landwaste returns lag time short, can not be contaminated because contacting with borehole wall stratum, in time, accurately can grasp formation information, finds low pressure, low permeability reservoir.Therefore, the injury of full well section self-priming reacting cycle gas drilling system commute, low pressure, low permeability formation (some shale gas, coalbed methane reservoirs etc. also comprise some debilitating reservoir) is adopted to have more advantage than direct circulation gas drilling and conventional mud drilling well.In addition, in the long run, China has a large amount of low pressure, hyposmosis oil-gas resource, To The Methane Resources In Coalbed, and the exploration and development of these resources is that the application of full well section self-priming reacting cycle gas drilling technique provides wide space.
Accompanying drawing explanation
Below in conjunction with specification drawings and specific embodiments, the utility model is described in further detail, wherein:
Fig. 1 is that the utility model is applied to full well section self-priming reacting cycle gas drilling system architecture schematic diagram;
Fig. 2 is drilling well gas circulation path figure.
Mark in figure:
1. on air injection unit 2. pressure release unit 3. flow meter 4. ground injecting gas manifold 5. high-pressure gas injection flexible pipe 6. air distribution connector 7. double-walled, under cock 8. double-walled kelly bar 9. double-walled, cock 10. rotating blowout preventer 11. well head 12. sleeve pipe 13. double-wall drill pipe 14. double-walled drill collar 15. ring check valve 16. gas reacting cycle rock crushing tool 17. water tap or top are driven 18. erosion resistance gooseneck 19. high pressure reacting cycle sediment outflow flexible pipe 20. ground reacting cycle sediment outflow pipelines 21. and are sampled pipe nipple 22. dustfall water pipe nipple 23. direct circulation gas drilling sediment outflow pipeline 24. slush pump 25. choke manifold 26. grit chamber 27. gas and drain into high pressure sediment outflow flexible pipe 29. double wall drill tool outer tube 30. double wall drill tool inner and outer tubes annular gap 31. double wall drill tool Nei Guan 32. center sediment outflow passage from high-pressure gas injection flexible pipe 28. gas.
Detailed description of the invention
embodiment 1
As a better embodiment of the present utility model, it comprises: air injection unit 1, pressure release unit 2, flow meter 3, ground injecting gas manifold 4, high-pressure gas injection flexible pipe 5, erosion resistance gooseneck 18, high pressure reacting cycle sediment outflow flexible pipe 19, ground reacting cycle sediment outflow pipeline 20 and direct circulation gas drilling sediment outflow pipeline 23
Wherein: described air injection unit 1 is connected by high pressure line with pressure release unit 2, pressure release unit 2 exports installs described flow meter 3, and flow meter 3 upstream connects pressure release unit 2, and downstream connects ground injecting gas manifold 4, and ground injecting gas manifold 4 is connected with high-pressure gas injection flexible pipe 5;
The outlet of described erosion resistance gooseneck 18 is connected with high pressure reacting cycle sediment outflow flexible pipe 19, high pressure reacting cycle sediment outflow flexible pipe 19 is connected with ground reacting cycle sediment outflow pipeline 20, at the middle part of ground reacting cycle sediment outflow pipeline 20, a four-way is installed, the left end of four-way connects ground reacting cycle sediment outflow pipeline 20, right-hand member connects a threeway, upper end connects slush pump 24, and lower end connects ground injecting gas manifold 4; An outlet of described threeway is connected with direct circulation gas drilling sediment outflow pipeline 23, and another outlet of threeway is through to grit chamber;
Described erosion resistance gooseneck 18, high-pressure gas injection flexible pipe 5 and direct circulation gas drilling sediment outflow pipeline 23 are all connected on structure of downhole assembly.
In this example, the structure of downhole assembly adopted can adopt various double wall drill tools common in prior art, and manifold of ground syndeton and structure of downhole assembly are joined together to form full well section self-priming reacting cycle gas drilling system.
embodiment 2
On the basis of above-described embodiment, on the reacting cycle sediment outflow pipeline 20 leading to grit chamber, sampling pipe nipple 21 and dustfall water pipe nipple 22 are installed.Air injection unit 1 provides gases at high pressure, comprises air compressor and supercharger.The left end of four-way connects ground reacting cycle sediment outflow pipeline 20 by valve C, right-hand member connects a threeway by valve E, upper end connects slush pump 24 by valve D, and lower end connects ground injecting gas manifold 4 by valve B, and ground injecting gas manifold 4 is also provided with valve A between being connected with high-pressure gas injection flexible pipe 5.
embodiment 3
Embody rule example of the present utility model: a kind of full well section self-priming reacting cycle gas drilling system is made up of following equipment and instrument: air injection unit 1, pressure release unit 2, flow meter 3, ground injecting gas manifold 4, high-pressure gas injection flexible pipe 5, air distribution connector 6, cock 7 on double-walled, double-walled kelly bar 8, cock 9 under double-walled, double-wall drill pipe 10, double-walled drill collar 11, ring check valve 12, reacting cycle rock crushing tool (reacting cycle air hammer, reacting cycle rock bit or reacting cycle PDC drill bit) 13, double-wall drill pipe 14, wellhead assembly 15, rotating blowout preventer 16, water tap (or top is driven) 17, erosion resistance gooseneck 18, high pressure reacting cycle sediment outflow flexible pipe 19, ground reacting cycle sediment outflow pipeline 20, sampling pipe nipple 21, dustfall water pipe nipple 22, direct circulation gas drilling sediment outflow pipeline 23, to slush pump 24, to choke manifold 25, also comprise a series of valve of matching and pipe nipple simultaneously.
Air injection unit 1 is made up of air compressor machine and supercharger, and concrete how much equipment should be determined according to engineering is actual.2 air compressor machines are needed and 1 supercharger for subsequent use within usual 444.5mm well 1000m.The Compressed Gas that air injection unit 1 provides drilling well required.Air injection unit 1 is connected by high pressure line (being usually not less than 21MPa) with pressure release unit 2.Pressure release unit 2 is made up of a series of valve, silencing equipment, manometer etc., belongs to safety device, for delivery system pressure and the tolerance regulating the system that enters.Pressure release unit 2 outlet arranges flow meter 3, for being metered into intrasystem actual tolerance.Ground injecting gas manifold 4 is high pressure pipe joint (being usually not less than 21MPa), is connected to form by union by a series of high pressure hard tube line, high-pressure hose line, crossover sub etc.The part of high-pressure gas injection pipeline on derrick can adopt soft pipeline, and also can adopt hard tube line, this is determined by on-site actual situations.The high-pressure gas injection flexible pipe 5 pressure rank be connected with air distribution connector 6 is not less than 21MPa usually, and the two is connected by union.Air distribution connector 6 is double-walled construction, and its upper end and water tap (or push up drive) are connected, and lower end is connected with double-walled kelly bar (or double-wall drill pipe).The effect of air distribution connector 6 is assigned in the annular gap of the inner and outer tubes of double wall drill tool by the gases at high pressure from high-pressure gas injection flexible pipe 5.Air distribution connector 6 top connecting tap (or top is driven) 17, if connecting tap 17, then for left-hand thread connects; If connect top to drive, then for right-hand thread connects.Gooseneck above water tap (or top is driven) 17 is erosion resistance gooseneck 18, and there is buffer area at this gooseneck turning, effectively can reduce the erosion of high-velocity fluid to gooseneck, and this erosion resistance gooseneck 18 belongs to field-replaceable unit.Air distribution connector 6 bottom connects cock 7 on double-walled, and on this, cock is double-walled construction, can realize sealing to double wall drill tool annular space.On double-walled, cock 7 connects double-walled kelly bar 8 below, and double-walled kelly bar 8 is generally six rib double-walled kelly bars.Cock 9 under double-walled kelly bar 8 lower end connection double-walled.Under double-walled, cock 9 is right-hand thread, and on double-walled, cock 7 is left-hand thread.If use top to drive, then can not use cock 9 under cock 7 on double-walled, double-walled kelly bar 8 and double-walled.Entering well drilling assembly is from top to bottom: double-wall drill pipe 13, double-walled drill collar 14, ring check valve 15 and gas reacting cycle rock crushing tool 16.The outer tube of double-wall drill pipe 13, double-walled drill collar 14 is conventional drill rod, and inside adds interior pipe by innovative design.Double-wall drill pipe 13 is identical with conventional drill rod with the specification of double-walled drill collar 14.Ring check valve 15 is the interior jet-preventing tool of nearly drill bit, can effectively prevent borehole fluid from recharging and enter in the inner and outer pipe annular gap of double wall drill tool.Gas reacting cycle rock crushing tool 16 comprises reacting cycle air hammer, reacting cycle rock bit and reacting cycle PDC drill bit.Reacting cycle rock crushing tool designed by the utility model has self sealss annular space function.Under self-packing effect, gases at high pressure directly enter into center sediment outflow passage (shown in Fig. 2) after this reacting cycle rock crushing tool 16, there is certain swabbing action (namely forming self-priming) in reacting cycle rock crushing tool 16 pairs of shaft bottoms simultaneously, are formed with positive effect to reverse circulating.The wellhead assembly 11 that the utility model relates to is made up of the device such as single four-way, two four-way, rising pipe nipple, single ram type perventer, double ram type preventer, annular preventer.The specific requirement of this wellhead assembly 11 should be determined according to Drilling Design.Full well section self-priming reacting cycle gas drilling system involved by the utility model and process are to wellhead assembly 11 not special requirement.For rotating blowout preventer 10, be arranged on conventional wellhead assembly 11, on the one hand salable annular space, offer help when counterflush drilling needs sealing annular space; On the other hand, when being converted to direct circulation gas drilling, rotating blowout preventer 10 is absolutely necessary device.High pressure reacting cycle sediment outflow flexible pipe 19 is connected by union with erosion resistance gooseneck 18, and pressure rank should not lower than 35MPa, and length also should according to derrick height choose reasonable.Ground reacting cycle sediment outflow pipeline 20 pressure rank can not lower than 35MPa, and far-end and direct circulation gas drilling sediment outflow pipeline 23 on a sediment outflow passage, together pick out to grit chamber.The pressure rank of direct circulation gas drilling sediment outflow pipeline 23 is not less than 7MPa, is generally 10 " pipelines.
The implementation process of full well section self-priming reacting cycle gas drilling is as follows: close D, B, F valve, open A, C, E valve.Compressed Gas is produced by air injection unit 1, flows through pressure release unit 2, flow meter 3, ground injecting gas manifold 4, high-pressure gas injection flexible pipe 5 arrive air distribution connector 6.Under the effect of air distribution connector 6, Compressed Gas enters into the inner and outer pipe annular gap of double wall drill tool (double-walled kelly bar 8, double-wall drill pipe 13, double-walled drill collar) and descending along annular gap, by arriving gas reacting cycle rock crushing tool 16 place after ring check valve 15.Under the broken rock of gas reacting cycle rock crushing tool 16, self sealss annular space, reacting cycle sediment outflow three greatly effect, the center sediment outflow passage of Compressed Gas cutting carring pipe in double wall drill tool returns, through water tap (or top is driven) 17, erosion resistance gooseneck 18, high pressure reacting cycle sediment outflow flexible pipe 19, ground reacting cycle sediment outflow pipeline 20, sampling pipe nipple 21 and dustfall water pipe nipple 22, finally drain into grit chamber.
When down-hole occurs complicated, when needing by direct circulation gas drilling process complexity or be converted to the process implementing drilling well of direct circulation gas drilling: close A, D, E valve, open B, C, F valve.After air injection unit 1 produces gases at high pressure, gas, through pressure release unit 2 and flow meter 3, enters into ground reacting cycle sediment outflow pipeline 20 by B valve.Compressed Gas is through ground reacting cycle sediment outflow pipeline 20, high pressure reacting cycle sediment outflow flexible pipe 19, erosion resistance gooseneck 18, water tap (or top is driven) 17, directly enter into air distribution connector 6, double wall drill tool (double-walled kelly bar 8, double-wall drill pipe 13, double-walled drill collar 14, gas reacting cycle rock crushing tool 16) center sediment outflow passage in, and come downwards to shaft bottom along center sediment outflow passage, carry shaft bottom landwaste to return along on the annular space between double wall drill tool and the borehole wall, under the effect of rotating blowout preventer 10, by valve F, direct circulation ground sediment outflow pipeline 23, sampling pipe nipple 21, dustfall water pipe nipple 22, finally drain into grit chamber.
When down-hole occurs complicated, when needing by conventional mud drilling well process complexity or be converted to conventional mud drilling technology enforcement drilling well: close A, B, E, F valve, open D, C valve.From the mud (or other drilling fluid) of slush pump 24, by D valve, C valve, ground reacting cycle sediment outflow pipeline 20, high pressure reacting cycle sediment outflow flexible pipe 19, erosion resistance gooseneck 18, water tap (or top is driven) 17, directly enter into air distribution connector 6, double wall drill tool (double-walled kelly bar 8, double-wall drill pipe 13, double-walled drill collar 14, gas reacting cycle rock crushing tool 16) center sediment outflow passage in, and come downwards to shaft bottom along center sediment outflow passage, carry shaft bottom landwaste and return well head along on the annular space between double wall drill tool and the borehole wall, due to the F valve closing at rotating blowout preventer 10 place, the mud returning well head from shaft bottom will enter choke manifold 25, finally be recycled in mud circulating system.
Claims (5)
1. a gas drilling manifold of ground syndeton, it is characterized in that: comprising: air injection unit (1), pressure release unit (2), flow meter (3), ground injecting gas manifold (4), high-pressure gas injection flexible pipe (5), erosion resistance gooseneck (18), high pressure reacting cycle sediment outflow flexible pipe (19), ground reacting cycle sediment outflow pipeline (20) and direct circulation gas drilling sediment outflow pipeline (23)
Wherein: described air injection unit (1) is connected by high pressure line with pressure release unit (2), described flow meter (3) is installed in pressure release unit (2) outlet, flow meter (3) upstream connects pressure release unit (2), downstream connects ground injecting gas manifold (4), and ground injecting gas manifold (4) is connected with high-pressure gas injection flexible pipe (5);
The outlet of described erosion resistance gooseneck (18) is connected with high pressure reacting cycle sediment outflow flexible pipe (19), high pressure reacting cycle sediment outflow flexible pipe (19) is connected with ground reacting cycle sediment outflow pipeline (20), at the middle part on ground reacting cycle sediment outflow pipeline (20), a four-way is installed, the left end of four-way connects ground reacting cycle sediment outflow pipeline (20), right-hand member connects a threeway, upper end connects slush pump (24), and lower end connects ground injecting gas manifold (4); An outlet of described threeway is connected with direct circulation gas drilling sediment outflow pipeline (23), and another outlet of threeway is through to grit chamber;
Described erosion resistance gooseneck (18), high-pressure gas injection flexible pipe (5) and direct circulation gas drilling sediment outflow pipeline (23) are all connected on the structure of downhole assembly of full well section self-priming reacting cycle gas drilling system.
2. gas drilling manifold of ground syndeton according to claim 1, is characterized in that: on the reacting cycle sediment outflow pipeline (20) leading to grit chamber, is provided with sampling pipe nipple (21) and dustfall water pipe nipple (22).
3. gas drilling manifold of ground syndeton according to claim 1, is characterized in that: air injection unit (1) provides gases at high pressure, comprises air compressor and supercharger.
4. gas drilling manifold of ground syndeton according to claim 1, it is characterized in that: the left end of four-way connects ground reacting cycle sediment outflow pipeline (20) by valve C, right-hand member connects a threeway by valve E, upper end connects slush pump (24) by valve D, lower end connects ground injecting gas manifold (4) by valve B, and ground injecting gas manifold (4) is also provided with valve A between being connected with high-pressure gas injection flexible pipe (5).
5. gas drilling manifold of ground syndeton according to claim 1, is characterized in that: described high pressure refers to the pressure being not less than 21MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520783370.7U CN205036327U (en) | 2015-10-10 | 2015-10-10 | Gas drilling ground manifold connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520783370.7U CN205036327U (en) | 2015-10-10 | 2015-10-10 | Gas drilling ground manifold connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205036327U true CN205036327U (en) | 2016-02-17 |
Family
ID=55295236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520783370.7U Withdrawn - After Issue CN205036327U (en) | 2015-10-10 | 2015-10-10 | Gas drilling ground manifold connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205036327U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178897A (en) * | 2015-10-10 | 2015-12-23 | 中国石油集团川庆钻探工程有限公司 | Gas drilling ground manifold connection structure |
| CN110017138A (en) * | 2019-05-08 | 2019-07-16 | 中国科学院武汉岩土力学研究所 | Air water multilayer sampling method and device in a kind of drilling |
| CN110905427A (en) * | 2019-12-19 | 2020-03-24 | 中化地质矿山总局河北地质勘查院 | Pneumatic processing device and method for buried drilling accident in drilling hole |
| CN110043190B (en) * | 2019-04-02 | 2020-08-18 | 中国地质科学院勘探技术研究所 | Method for building vertical well large-diameter chamber |
-
2015
- 2015-10-10 CN CN201520783370.7U patent/CN205036327U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178897A (en) * | 2015-10-10 | 2015-12-23 | 中国石油集团川庆钻探工程有限公司 | Gas drilling ground manifold connection structure |
| CN105178897B (en) * | 2015-10-10 | 2018-03-30 | 中国石油集团川庆钻探工程有限公司 | Gas drilling ground manifold connection structure |
| CN110043190B (en) * | 2019-04-02 | 2020-08-18 | 中国地质科学院勘探技术研究所 | Method for building vertical well large-diameter chamber |
| CN110017138A (en) * | 2019-05-08 | 2019-07-16 | 中国科学院武汉岩土力学研究所 | Air water multilayer sampling method and device in a kind of drilling |
| CN110905427A (en) * | 2019-12-19 | 2020-03-24 | 中化地质矿山总局河北地质勘查院 | Pneumatic processing device and method for buried drilling accident in drilling hole |
| CN114482886A (en) * | 2019-12-19 | 2022-05-13 | 中化地质矿山总局河北地质勘查院 | Pneumatic processing method for buried drilling accident in drilling hole |
| CN110905427B (en) * | 2019-12-19 | 2022-05-13 | 中化明达河北地质工程有限公司 | Pneumatic processing device and method for buried drilling accident in drilling hole |
| CN114482886B (en) * | 2019-12-19 | 2023-12-15 | 中化地质矿山总局河北地质勘查院 | Pneumatic treatment method for drill hole embedded drilling accident |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105178859B (en) | Full-well-section self-suction reverse circulation gas drilling system for oil and gas drilling | |
| CN208152960U (en) | A kind of multi-cycle runner drilling tool | |
| CN105178897B (en) | Gas drilling ground manifold connection structure | |
| CN205036295U (en) | Full well section self-suction type reverse circulation gas drilling system | |
| CN205036331U (en) | Reverse circulation gas drilling tool combined structure | |
| CN100494623C (en) | Low-pressure drilling technology using double-wall drill pipe | |
| CN110029938A (en) | A kind of air reverse circulation drilling method | |
| CN201705219U (en) | Lateral drilling gravel pack completion string | |
| CN105134114A (en) | Reverse circulation gas drilling tool composite structure | |
| CN205036327U (en) | Gas drilling ground manifold connecting structure | |
| CN103912304A (en) | Method for locally extracting gas of soft coal seams | |
| CN103321613A (en) | Method and device for exploiting coal bed methane by discharging water and pulverized coal | |
| CN202810680U (en) | Well drilling combination device using double-wall drill pipe | |
| WO1991017339A1 (en) | Method and apparatus for drilling and coring | |
| CN108104749A (en) | Sandstone geothermal well gas lift reverse circulation sand-flushing Processes and apparatus | |
| CN208294471U (en) | It is a kind of for deep water without marine riser gas lift reverse circulation drilling well system | |
| CN104047556B (en) | A kind of method preventing long 7 oil shales from caving in | |
| CN208152959U (en) | A kind of mixed gas connector of multi-cycle runner drilling tool | |
| CN203239303U (en) | Exploitation device for injection and production in the same well | |
| CN203412552U (en) | Water and pulverized coal discharging coal-bed methane mining device | |
| CN1587636B (en) | Full well back circulation fishing process | |
| CN101487385A (en) | Downhole tool for reducing equivalent circulation density | |
| CN106337667A (en) | Secondary-exploitation horizontal well cementing and completion construction method | |
| CN207048740U (en) | A kind of water pumping gas production integration goaf gas extraction well casing programme | |
| CN107989578A (en) | Liquid discharge system and method of recyclable nitrogen jet pump of coiled tubing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160217 Effective date of abandoning: 20180330 |