CN201614926U - Shock-absorbing device used for combined process of composite perforation and full-bore formation test - Google Patents
Shock-absorbing device used for combined process of composite perforation and full-bore formation test Download PDFInfo
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- CN201614926U CN201614926U CN201020302514XU CN201020302514U CN201614926U CN 201614926 U CN201614926 U CN 201614926U CN 201020302514X U CN201020302514X U CN 201020302514XU CN 201020302514 U CN201020302514 U CN 201020302514U CN 201614926 U CN201614926 U CN 201614926U
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- packer
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- shock absorber
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Abstract
The utility model relates to the field of petroleum exploration, particularly to a shock-absorbing device used for combined process of the composite perforation and the full-bore formation test, which can reduce the impact on the formation test tool caused by the energy generated during the composite perforation and achieve the purpose of protecting the formation test tool and ensuring the normal work of the formation test tool. The shock-absorbing device comprises a packer arranged inside a pipe string, a telescopic shock absorber positioned below the packer, and an energy damper positioned below the telescopic shock absorber, wherein the packer, the telescopic shock absorber and the energy damper are connected through an oil pipe, and test instruments are arranged above the packer. The shock-absorbing device can effectively suppress the axial displacement and shock of the pipe string, the energy damper is mainly applied to reduce the impact energy of the well fluid in the axial direction of the well bore, and the synergistic effect of the shock-absorbing device and the energy damper can effectively reduce the momentary shock of the pipe string inside the well bore during the perforation.
Description
Technical field
The utility model relates to petroleum exploration field, particularly a kind of damping device that is used for composite gun perforation and all-pass footpath formation testing connection work.
Background technology
Formation testing is to be lowered to testing tool from pit shaft behind the perforation, measures the multiple parameter of stratum and fluid, so that oil-gas Layer is carried out authentic assessment and description.Traditional dst technology is to play the perforation hole tubing string after perforation, is lowered to testing tool again.So not only need a lot of tubing strings that go out a time, also need many kill jobs simultaneously, to the stratum also with regard to many primary pollutions.Very high owing to strata pressure in some high-pressure oil-gas wells, there is very big risk in the process that trips out tubing string, more need it is worth noting because factors such as time difference and kill jobs, be lowered to behind the perforation the resulting test result of testing tool often with actual formation situation difference to some extent.Composite gun perforation and formation testing connection are done exactly composite gun perforation and twice tubing string of formation testing to be united two into one, and one time tubing string is finished underground work such as composite gun perforation and formation testing.Owing in pit shaft, can produce very high dynamic high-pressure pulse in the composite gun perforation process, can produce strong vibrations and impact to downhole tool and instrument, general formation testing pressure gauge is difficult to bear so big vibration limits power, tends to the build-up of pressure meter and damages, and connection is failed.How effectively to alleviate sharp pounding and impact that composite gun perforation moment produces pressure gauge, protection pressure gauge safety makes it can proper testing become connection and makes successfully whether key.Xi'an Tongyuan Petroleum Technology Co., Ltd has invented a kind of composite set that is used for composite gun perforation and formation testing connection work and has successfully solved this difficult problem, has obtained good effect in using at the scene.But this composite set is formed by multiple tool combinations, and technology is complicated, and it is longer to connect back pipe string, is unfavorable for subsequent job.
Summary of the invention
Problem to be solved in the utility model is: a kind of damping device that can be used for composite gun perforation and all-pass footpath formation testing connection work is provided; its technology is comparatively simple; can effectively alleviate the vibrations of composite gun perforation moment tubing string in pit shaft, reach the purpose of other testing tools such as protection pressure gauge.
The technical scheme that addresses the above problem is; The damping device that being used for of being provided, formation testing connection in composite gun perforation and all-pass footpath did comprises the packer that is located at tubing string, is positioned at the telescopic shock absorber of packer below and the energy damper that is positioned at the telescopic shock absorber below, wherein connect by oil pipe between packer, telescopic shock absorber and the energy damper, tester places the packer top.The internal mandrel retractable of telescopic shock absorber, can effectively alleviate the axial float of tubing string, and the elastomeric damper member of damper inside can reduce tubing string along the axial vibrations of pit shaft, their synergy can effectively be alleviated the vibrations of perforation moment tubing string in pit shaft, and the energy damper can effectively weaken the vertical tremor energy of fluid column in the pit shaft
Telescopic shock absorber and energy damper that the utility model utilization has buffering, shock-absorbing function act synergistically mutually; not only tester is protected effectively in composite gun perforation moment; it is smooth that composite gun perforation and formation testing connection is done, but also have advantage simple in structure, easy to assembly.
Description of drawings
Fig. 1 is the structure chart of an embodiment of the utility model.
Fig. 2 is a concrete structure figure of telescopic damper of the present utility model.
Fig. 3 is the structure chart of energy damper among Fig. 1.
The specific embodiment
As shown in Figure 1: the damping device that this connection is done mainly is made up of the packer 1, first oil pipe 2, damper 3, the second oil pipe 2a and the energy damper 4 that link to each other successively, and the below of energy damper 4 connects perforator 6 by the 3rd oil pipe 5.Packer 1 adopts types such as existing P T, RTTS, and it sets, deblocking makes things convenient for, and also can repeatedly use; Energy damper 4 top oil pipes 2 play with below oil pipe 2a and are connected and the prolongation effect.
As shown in Figure 2: telescopic shock absorber 3 mainly by urceolus 7, place piston 8 in the urceolus 7, go up rubber pad 9, rubber pad 10, the transition joint 11 that is connected with urceolus 7 lower ends, the mandrel 12 that is connected with piston 8, the spring 13 that is wrapped on the mandrel 12 are formed with the crossover sub 15 that is connected mandrel 12 down, wherein go up rubber pad 9 and following rubber pad 10 between piston 8 lower ends and transition joint 11.Urceolus 7 is shells of damper, and piston 8 drives mandrel 12 and can freely stretch in urceolus, scurries displacement on the buffering tubing string; Last rubber pad 9, following rubber pad 10 and spring 13 play cushioning effect when mandrel 12 upper and lower displacements reach at utmost, reduce the tubing string axial vibrations; 15 interconnect functions of transition joint 11 and crossover sub.
The space that one free travel is preferably arranged between the upper end of spring 13 and transition joint 11 lower ends promptly just contacts with transition joint 11 behind the spring 13 free up segment distances.
According to the operation needs, on mandrel 12, can also be provided with a sieve aperture pipeline section 14, it is the connection pipeline section with some radial direction through hole, is used for being communicated with the oil pipe annular space.
As shown in Figure 3: energy damper 4 is made up of damping tube 17 and the arc surfaced centralizer 16 that wraps in damping tube 17 outsides, wherein has the damping hole 18 of many bendings in the damping tube 17.17 centralizing functions of centralizer, damping tube 16 utilizes inner damping hole 18 that well liquid is filtered, and can effectively weaken the fluid column energy in the pit shaft.
The course of work of this damping device is: at well head be linked in sequence damping device and perforator, go into the well with the perforation tubing string, treat composite perforator aligning recoil, purpose stratum sealed packer 1, formation test tool is connected on packer top, igniting blasting perforator 6 behind the packer setting.Because packing element is opened the annular space packing, reduced of the impact of the high-pressure shocking wave of perforation moment generation to formation test tool.The mandrel 12 of telescopic shock absorber 3 has certain free travel, can offset the part tubing string on scurry energy; Be installed at spring 13 on the mandrel 12 and the rubber pad that is installed on the piston 8 and can effectively alleviate the tubing string axial vibrations, and energy damper 4 weakens the well liquid energy that perforation was scurried on moment by inner damping hole filter well liquid.
Claims (5)
1. one kind is used for the damping device that formation testing connection in composite gun perforation and all-pass footpath is done, it is characterized in that comprising the packer (1) that is located in the tubing string, be positioned at the telescopic shock absorber (3) of packer below and the energy damper (4) that is positioned at the telescopic shock absorber below, wherein connect by oil pipe between packer (1), telescopic shock absorber (3) and the energy damper (4), tester places packer (1) top.
2. damping device according to claim 1, it is characterized in that said telescopic shock absorber (3) mainly by urceolus (7), place piston (8) in the urceolus (7), go up rubber pad (9), rubber pad (10), the transition joint (11) that is connected with urceolus (7) lower end, the mandrel (12) that is connected with piston (8), the spring (13) that is wrapped on the mandrel (12) are formed with the crossover sub that is connected mandrel (15) down, wherein go up rubber pad (9) and following rubber pad (10) and be positioned between piston (8) lower end and the transition joint (11).
3. damping device according to claim 2 is characterized in that having between the upper end of spring (13) and transition joint (11) lower end space of a free travel.
4. according to claim 1,2 or 3 described damping devices, it is characterized in that energy damper (4) is made up of damping tube (17) and the arc surfaced centralizer (16) that wraps in damping tube (17) outside, wherein have the damping hole (18) of many bendings in the damping tube (17).
5. damping device according to claim 3 is characterized in that also being provided with a sieve aperture pipeline section (14) on mandrel (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020302514XU CN201614926U (en) | 2010-02-08 | 2010-02-08 | Shock-absorbing device used for combined process of composite perforation and full-bore formation test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020302514XU CN201614926U (en) | 2010-02-08 | 2010-02-08 | Shock-absorbing device used for combined process of composite perforation and full-bore formation test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201614926U true CN201614926U (en) | 2010-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020302514XU Expired - Lifetime CN201614926U (en) | 2010-02-08 | 2010-02-08 | Shock-absorbing device used for combined process of composite perforation and full-bore formation test |
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| CN (1) | CN201614926U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312665A (en) * | 2011-09-21 | 2012-01-11 | 中国石油化工股份有限公司 | Stratum perforation test device |
| US9187997B2 (en) | 2012-02-13 | 2015-11-17 | General Downhole Technologies, Ltd. | System, method and apparatus for reducing shock and vibration in down hole tools |
| CN106812520A (en) * | 2015-12-01 | 2017-06-09 | 北京环鼎科技有限责任公司 | A kind of guiding buffer unit of Drill-pipe conveyed formula logging instrument |
| CN107100598A (en) * | 2017-06-30 | 2017-08-29 | 中国石油大学(北京) | Perforation dampening arrangement |
| CN107676075A (en) * | 2016-08-02 | 2018-02-09 | 西安洛科电子科技有限责任公司 | Perforation pressure gauge |
| CN108319765A (en) * | 2018-01-16 | 2018-07-24 | 中国石油大学(北京) | A kind of damping processing method and processing device for cannula type packer |
| CN111140202A (en) * | 2020-01-13 | 2020-05-12 | 中国石油天然气股份有限公司 | Deep well and ultra-deep well integrated production completion pipe string and operation method thereof |
| CN107676075B (en) * | 2016-08-02 | 2024-04-30 | 西安洛科电子科技股份有限公司 | Perforation pressure gauge |
-
2010
- 2010-02-08 CN CN201020302514XU patent/CN201614926U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312665A (en) * | 2011-09-21 | 2012-01-11 | 中国石油化工股份有限公司 | Stratum perforation test device |
| US9187997B2 (en) | 2012-02-13 | 2015-11-17 | General Downhole Technologies, Ltd. | System, method and apparatus for reducing shock and vibration in down hole tools |
| CN106812520A (en) * | 2015-12-01 | 2017-06-09 | 北京环鼎科技有限责任公司 | A kind of guiding buffer unit of Drill-pipe conveyed formula logging instrument |
| CN107676075A (en) * | 2016-08-02 | 2018-02-09 | 西安洛科电子科技有限责任公司 | Perforation pressure gauge |
| CN107676075B (en) * | 2016-08-02 | 2024-04-30 | 西安洛科电子科技股份有限公司 | Perforation pressure gauge |
| CN107100598A (en) * | 2017-06-30 | 2017-08-29 | 中国石油大学(北京) | Perforation dampening arrangement |
| CN107100598B (en) * | 2017-06-30 | 2018-06-29 | 中国石油大学(北京) | Perforation dampening arrangement |
| CN108319765A (en) * | 2018-01-16 | 2018-07-24 | 中国石油大学(北京) | A kind of damping processing method and processing device for cannula type packer |
| CN108319765B (en) * | 2018-01-16 | 2020-06-19 | 中国石油大学(北京) | Shock absorption treatment method and device for intubation type packer |
| CN111140202A (en) * | 2020-01-13 | 2020-05-12 | 中国石油天然气股份有限公司 | Deep well and ultra-deep well integrated production completion pipe string and operation method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101027 |
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| CX01 | Expiry of patent term |