CN205189848U - Discodactylous that breaks end well cementation fracturing sliding sleeve - Google Patents
Discodactylous that breaks end well cementation fracturing sliding sleeve Download PDFInfo
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- CN205189848U CN205189848U CN201520394952.6U CN201520394952U CN205189848U CN 205189848 U CN205189848 U CN 205189848U CN 201520394952 U CN201520394952 U CN 201520394952U CN 205189848 U CN205189848 U CN 205189848U
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- sliding sleeve
- rupture disk
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Abstract
The utility model provides a discodactylous that breaks end well cementation fracturing sliding sleeve of it is reliable. The rupture disk by pressure driven, is installed to the piston of opening of sliding sleeve in the pressure transmission route, according to the hole condition, design the corresponding rupture disk value of breaking, guarantees can get through the rupture disk in the pressure range of design. When the outside increase pressure of sliding sleeve, pressure punctures and transmits the sliding sleeve piston behind the rupture disk promptly, and the piston cuts the shop bolt down in the pressure effect, then the sliding sleeve piston from the high pressure to the displacement of low pressure direction, when displacement during to spacing position, UNICOMs inside and outside 4 guiding gutters of the array distribution of sliding sleeve urceolus design are realized, the function is opened in the sliding sleeve realization, the top land design has C type expansion loop, and when piston displacement arrived spacing position, the inflation was located at big external diameter to C type ring, the seized piston, and messenger piston position is fixed irreversible, realizes the sliding sleeve promptly and opens to the locking is at open position, this product has the advantage of stability height, flexible operation simultaneously.
Description
Technical field
The utility model relates to one disc type of breaking and drives open sliding sleeve, belongs to well fracturing operation and well cementation downhole tool field.
Background technology
After the sixties in 20th century, fracturing technique is widely used in the stimulation work of China's oil gas field.The object of pressure break mainly improves the physical arrangement of oil reservoir, improves the penetrating power of oil reservoir artificially, makes oil well obtain effect of increasing production.The essence of fracturing technique utilizes high-pressure pump group that the liquid at high speed with certain viscosity is injected stratum.When the injection rate of pump is greater than the infiltration rate on stratum, stratum will produce breaks or makes original micro gap expansion to open, and forms larger crack.Along with the continuous injection of liquid, established crack constantly extends internally.After preventing termination of pumping, crack again closes under the gravity of rock stratum, top, will add proppant to support face, gap, avoid it again to close in injected liquid.Therefore, fracturing work corollary equipment of being correlated with is able to extensive use, and fracturing sliding bush is exactly one of instrument of extensive use in fracturing process.
Mostly the fracturing sliding bush used in current well fracturing operation, be to design for horizontal well bore hole multistage fracture environment, each payzone, all by sliding sleeve as pressure break with produce passage, and do card layer with packer up and down at sliding sleeve.The sliding sleeve of bottommost in pressure break completion flow string is generally be made up of pressure reduction sliding sleeve, and under differential pressure action, pressure reduction sliding sleeve is opened and set up first floor pressure break passage.Conventional pressure differential sliding sleeve is mainly used in the operation of open hole well staged fracturing, and under not needing to carry out full wellbore pressure test situation.If under well cementation environment, cement paste is easily invaded in hydraulic cavities by pressure transmission hole, thus affects the unlatching of pressure reduction sliding sleeve.In addition, if customer requirement carries out the pressure testing operation of full pit shaft before opening, conventional pressure reduction sliding sleeve is often difficult to reach required pressure test pressure due to the restriction being subject to shear pin shearing force.
In well cementation fracturing string, job step is first cemented the well, rear pressure break, cement may be had to remain in pressure reduction sliding sleeve inwall, cause condensation, thus cause sliding sleeve normally not open.There is certain risk; The shear force of the shear pin of pressure reduction sliding sleeve is unstable in addition, and what also result in that sliding sleeve can not normally open or open too early denounces.
Different from conventional pressure differential sliding sleeve, in disc type of breaking pressure reduction sliding sleeve, pressure transmission hole is not directly connected with sliding sleeve inner chamber, but by pressure transmission hole position installation rupture disk, itself and inner chamber is separated.
Utility model content
The purpose of this utility model is to provide reliably a kind of, well cementation fracturing sliding bush.The unlatching piston of sliding sleeve, by pressure-driven, is provided with rupture disk in pressure bang path, according to hole condition, design corresponding rupture value, ensure can get through rupture disk, pressure-driven sliding sleeve piston movement in the pressure limit of design, thus reach the object of open sliding sleeve.
The utility model rupture disk toe-end fracturing sliding bush comprises top contact, sliding sleeve urceolus, shop bolt, sliding sleeve piston, C shape expansion loop, rupture disk, shop bolt, bottom fitting; Sliding sleeve top contact is connected in turn with sliding sleeve urceolus, sliding sleeve piston, bottom fitting, and wherein rupture disk is arranged on sliding sleeve bottom fitting, and sliding sleeve piston is fixed by shear pin and sliding sleeve urceolus, and C shape expansion loop is arranged on sliding sleeve piston and opposing pistons is fixed; Sliding sleeve piston is arranged on sliding sleeve outer barrel, is to install location with shear pin; Sliding sleeve piston is provided with C type expansion loop, and installation sealing ring and back-up ring are as slipper seal system, and installation sealing ring and back-up ring are as slipper seal system.Sliding sleeve bottom fitting is provided with sealing ring and realizes between back-up ring and sliding sleeve piston sealing, and bottom fitting is relative with sliding sleeve urceolus fixing by shop bolt.
This rupture disk toe-end fracturing sliding bush, is characterized in that sliding sleeve urceolus has the flow path groove of four circumference array distributions.
This rupture disk toe-end fracturing sliding bush, is characterized in that sliding sleeve bottom fitting installs the rupture disk of 2 circumference array.
This rupture disk toe-end fracturing sliding bush, is characterized in that rupture disk can carry out the coupling replacing of model according to working condition requirement.
This rupture disk toe-end fracturing sliding bush, is characterized in that rupture disk and bottom fitting junction are for being tightly connected.
The utility model compared with prior art has the following advantages:
1, enter with under oil pipe one time, without the need to perforation, fracturing work completes for one time continuously, saves the time.
2, without the need to perforation, without the need to extra packer card layer, provide cost savings.Do not need hanger, the direct tieback of oil pipe is to well head.
3, pressure break keeps latus rectum in oil pipe after completing, and facilitates later workover treatment.
4, disc type of breaking pressure reduction sliding sleeve is owing to being rupture disk design, and the fracture pressure of its rupture disk is very accurate, and general opening pressure error within ± 2% scope, and is installed two rupture disks and guaranteed that it is successfully opened.And the opening pressure error of the pressure reduction sliding sleeve of routine is ± 15 ~ 30%.The design opening pressure (liquid column hydrostatic pressure) of rupture disk can be selected within the scope of 5,500psi-17,500psi, meets the construction requirement in various situation.
6, disc type of breaking pressure reduction sliding sleeve not only can be applied in the operation of well cementation sliding sleeve multilayer staged fracturing, can also with bridging plug perforation continuous cropping system with the use of, by installing this sliding sleeve in first paragraph position, the construction operation that starting differential pressure sliding sleeve carries out first paragraph is suppressed in direct pipe in pressing crack construction, eliminate the expense of entrance aperture operation under a coiled tubing, decrease activity duration and operating risk simultaneously.
Accompanying drawing explanation
Fig. 1: pressure test assembly drawing
Fig. 2: rupture disk toe-end well cementation fracturing sliding bush
Description of reference numerals
Fig. 1: 1 box plug; 2 pressure testing filled poles; 3O RunddichtringO; 4 pressure testing pressure transmission holes; 5 fixing pins; 6 pin thread plugs.
Fig. 2: 1 top contact; 2 sliding sleeve urceolus; 3O encloses; 4 pins; 5 back-up rings; 6O type ring; 7 refer to circle; 8O encloses; 9 back-up rings; 10 shear pins; 11O type circle; 12 sliding sleeve pistons; 13O encloses; 14 back-up rings; 15 back-up rings; 16 rupture disks; 17 shop bolts; 18O encloses; 19 bottom fittings.
Embodiment
Rupture disk is arranged on sliding sleeve bottom body, and when sliding sleeve internal pressure increases, rupture disk can under design pressure effect inside and outside UNICOM, and pressure is delivered to piston immediately, and piston shears shop bolt under pressure, and completes position stroke under pressure.When the C ring that piston is installed moves to large path position, C ring expands, and causes sliding sleeve piston displacement irreversible, reaches the effect of locking sliding sleeve piston, thus ensures sliding sleeve once open and namely lock open mode.
Claims (5)
1. one kind reliably, rupture disk toe-end well cementation fracturing sliding bush device, comprises top contact, sliding sleeve urceolus, shop bolt, sliding sleeve piston, C shape expansion loop, rupture disk, shop bolt, bottom fitting; Sliding sleeve top contact is connected in turn with sliding sleeve urceolus, sliding sleeve piston, bottom fitting, and wherein rupture disk is arranged on sliding sleeve bottom fitting, and sliding sleeve piston is fixed by shear pin and sliding sleeve urceolus, and C shape expansion loop is arranged on sliding sleeve piston and opposing pistons is fixed; Sliding sleeve piston is arranged on sliding sleeve outer barrel, is to install location with shear pin; Sliding sleeve piston is provided with C type expansion loop, installation sealing ring and back-up ring are as slipper seal system, installation sealing ring and back-up ring are as slipper seal system, sliding sleeve bottom fitting is provided with sealing ring and realizes between back-up ring and sliding sleeve piston sealing, and bottom fitting is relative with sliding sleeve urceolus fixing by shop bolt.
2. rupture disk toe-end well cementation fracturing sliding bush according to claim 1, is characterized in that sliding sleeve urceolus has the flow path groove of four circumference array distributions.
3. rupture disk toe-end well cementation fracturing sliding bush according to claim 1, is characterized in that sliding sleeve bottom fitting installs the rupture disk of 2 circumference array.
4. rupture disk toe-end well cementation fracturing sliding bush according to claim 3, is characterized in that rupture disk can carry out the coupling replacing of model according to working condition requirement.
5. rupture disk toe-end well cementation fracturing sliding bush according to claim 1, is characterized in that rupture disk and bottom fitting junction are for being tightly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520394952.6U CN205189848U (en) | 2015-06-10 | 2015-06-10 | Discodactylous that breaks end well cementation fracturing sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520394952.6U CN205189848U (en) | 2015-06-10 | 2015-06-10 | Discodactylous that breaks end well cementation fracturing sliding sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205189848U true CN205189848U (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520394952.6U Active CN205189848U (en) | 2015-06-10 | 2015-06-10 | Discodactylous that breaks end well cementation fracturing sliding sleeve |
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| CN (1) | CN205189848U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822278A (en) * | 2016-05-20 | 2016-08-03 | 中石化石油工程技术服务有限公司 | Equal-drift-diameter staged fracturing device and method |
| CN109025943A (en) * | 2018-08-21 | 2018-12-18 | 中国石油天然气股份有限公司 | Time-delay type fracturing channel construction method |
| CN110541687A (en) * | 2019-09-23 | 2019-12-06 | 中国石油集团川庆钻探工程有限公司 | Toe end sliding sleeve capable of controlled delay opening |
| CN111364933A (en) * | 2020-01-11 | 2020-07-03 | 中石化石油工程技术服务有限公司 | Sand control supporting device |
| CN112049606A (en) * | 2020-09-30 | 2020-12-08 | 中国石油天然气集团有限公司 | Time-delay opening toe end sliding sleeve and opening method thereof |
| CN112228026A (en) * | 2019-07-15 | 2021-01-15 | 中国石油天然气股份有限公司 | Dissolving type time-delay toe end sliding sleeve |
| CN113605860A (en) * | 2021-09-10 | 2021-11-05 | 青岛理工大学 | Remote control toe end sliding sleeve opening system based on pressure pulse signals |
| CN114753780A (en) * | 2022-06-14 | 2022-07-15 | 成都若克菲斯科技有限公司 | Bidirectional longitudinal shock absorber |
| CN114837624A (en) * | 2022-05-12 | 2022-08-02 | 北京佰文恒新能源服务有限公司 | Electric submersible pump system without workover rig |
-
2015
- 2015-06-10 CN CN201520394952.6U patent/CN205189848U/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822278A (en) * | 2016-05-20 | 2016-08-03 | 中石化石油工程技术服务有限公司 | Equal-drift-diameter staged fracturing device and method |
| CN109025943A (en) * | 2018-08-21 | 2018-12-18 | 中国石油天然气股份有限公司 | Time-delay type fracturing channel construction method |
| CN112228026A (en) * | 2019-07-15 | 2021-01-15 | 中国石油天然气股份有限公司 | Dissolving type time-delay toe end sliding sleeve |
| CN110541687A (en) * | 2019-09-23 | 2019-12-06 | 中国石油集团川庆钻探工程有限公司 | Toe end sliding sleeve capable of controlled delay opening |
| CN110541687B (en) * | 2019-09-23 | 2024-03-22 | 中国石油集团川庆钻探工程有限公司 | Toe end sliding sleeve capable of being opened in controlled time delay manner |
| CN111364933B (en) * | 2020-01-11 | 2024-01-30 | 中国石油化工集团有限公司 | Sand prevention supporting device |
| CN111364933A (en) * | 2020-01-11 | 2020-07-03 | 中石化石油工程技术服务有限公司 | Sand control supporting device |
| CN112049606A (en) * | 2020-09-30 | 2020-12-08 | 中国石油天然气集团有限公司 | Time-delay opening toe end sliding sleeve and opening method thereof |
| CN112049606B (en) * | 2020-09-30 | 2024-02-06 | 中国石油天然气集团有限公司 | Time-delay opening toe end sliding sleeve and opening method thereof |
| CN113605860A (en) * | 2021-09-10 | 2021-11-05 | 青岛理工大学 | Remote control toe end sliding sleeve opening system based on pressure pulse signals |
| CN113605860B (en) * | 2021-09-10 | 2023-02-28 | 青岛理工大学 | Remote control toe end sliding sleeve opening system based on pressure pulse signals |
| CN114837624B (en) * | 2022-05-12 | 2022-11-22 | 北京佰文恒新能源服务有限公司 | Electric submersible pump system without workover rig |
| CN114837624A (en) * | 2022-05-12 | 2022-08-02 | 北京佰文恒新能源服务有限公司 | Electric submersible pump system without workover rig |
| CN114753780A (en) * | 2022-06-14 | 2022-07-15 | 成都若克菲斯科技有限公司 | Bidirectional longitudinal shock absorber |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161123 Address after: 100027 Beijing city Chaoyang District No. 36 Xiaoyun Road, Air China Building Room 1108 Patentee after: Beijing Baiwen Hengxin Energy Service Co., Ltd. Address before: 100027 Beijing city Chaoyang District No. 36 Xiaoyun Road, Air China Building Room 1610 Patentee before: BEIJING RISHENG HENGCHENG ENERGY TECHNOLOGY DEVELOPMENT CO., LTD. |