CN103104213A - High temperature and high pressure test packer - Google Patents
High temperature and high pressure test packer Download PDFInfo
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- CN103104213A CN103104213A CN2012105422566A CN201210542256A CN103104213A CN 103104213 A CN103104213 A CN 103104213A CN 2012105422566 A CN2012105422566 A CN 2012105422566A CN 201210542256 A CN201210542256 A CN 201210542256A CN 103104213 A CN103104213 A CN 103104213A
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- sleeve body
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Abstract
The invention discloses a high temperature and high pressure test packer. The high temperature and high pressure test packer comprises a hydraulic anchor, a rubber sleeve, a mechanical slip, a friction assembly, and a core shaft, wherein one end of the core shaft is connected with the hydraulic anchor through screw threads, and the rubber sleeve, the mechanical slip and the friction assembly which are installed on the core shaft are arranged in sequence between the hydraulic anchor and the other end of the core shaft. A volume pipe is inserted in the hydraulic anchor and the core shaft, the rubber sleeve comprises a rubber sleeve body, and the rubber sleeve body comprises a head end rubber sleeve body, a middle portion rubber sleeve body and a tail end rubber sleeve body, wherein the head end rubber sleeve body, the middle portion rubber sleeve body and the tail end rubber sleeve body are in an integrated structure, and the hardness of the head end rubber sleeve body and the tail end rubber sleeve body is higher than the middle portion rubber sleeve body. The high temperature and high pressure test packer is capable of effectively separating an oil sleeve, improving test differential pressure and enlarging a pressure control window for test operation and beneficial to releasing reservoir pressure. The high temperature and high pressure test packer is of great importance to improving the test success rate and reducing operating risks.
Description
Technical field
The present invention relates to the packer in HTHP Oil/gas Well test jobs.
Background technology
Along with deepening continuously of China's oil, natural gas exploration and development carried out, deep oil-gas reservoir has become main exploration object, the Oil/gas Well degree of depth of institute's finishing drilling is also more and more darker, bottom pressure and temperature, pressure also constantly raise, as at Sichuan province, the maximum strata pressure in shaft bottom has reached 131MPa, if again reservoir is taked the acid stimulation measure, and the highest 210MPa that even reaches of bottom-hole treating pressure.Like this harsh downhole condition when carrying out test jobs, has proposed very high requirement to the bearing capacity of downhole testing packer.In test string, the test packer mainly plays tubing and casing effect under barrier wells, is one of instrument of most critical.
Publication number is CN202531094U, the Chinese patent literature that open day is on November 14th, 2012 discloses a kind of compression packer, use for solving conventional packer that period of validity is short, the later stage operating risk large, the problem such as poor and well-flushing channel switch difficulty designs to the oil pressure adaptive faculty, mainly comprise bushing pipe, the suit bushing pipe of the upper and lower joint that connects central tube, suit central tube packing element, advance and overlap and deblocking piston etc.With compare at the compression packer of use both at home and abroad at present, this patent application packer setting is airtight and not affected by tubing pressure fluctuation, sealing is reliable; Cancelled the well-flushing passage, make set, deblocking is more reliably more flexible, the situation of having avoided passage not open or fit badly; Adopt hydraulic pressure and two kinds of decompress(ion) modes of machinery to support the use, have deblocking, sand control two-way safeguarding function; The filtration cover that arranges improves the condition of work of understanding the envelope piston, has improved the reliability of operation.
But the existing packer take above-mentioned patent documentation as representative, its high workload pressure reduction can only reach 70MPa, deficiency due to test packer bearing capacity, cause test safety pressure to control window limited, careless slightlyly namely can cause the crowded of packer to ruin because pressure reduction is excessive, cause the even full well of test crash to scrap.
Therefore, at present both at home and abroad test company is all making great efforts exploitation HTHP test packer.But domestic do not have a 105MPa test packer, and the external as fewer companies such as Schlumberger, Halliburton have 105MPa to test packer, and complex structure, the cost of overhaul are high, do not match with domestic dependence test instrument, can't effectively promote domestic measuring technology level.
For this reason, need exploitation a kind of simple and practical, be convenient to maintenance, the 105MPa HTHP test packer that versatility is good.
Summary of the invention
For solving the existing technical problem of above-mentioned prior art, the present invention proposes a kind of HTHP test packer, adopt the present invention, can effectively separate tubing and casing, improve test pressure differential, enlarge test jobs pressure and control window, be conducive to reservoir pressure and discharge.For improving the test success rate, reduce operating risk and be significant.
The present invention is by adopting following technical proposals to realize:
A kind of HTHP test packer, comprise hydraulic anchor, packing element, mechanical slips, friction component mandrel, it is characterized in that: an end of mandrel is connected with hydraulic anchor by screw thread, between the other end of hydraulic anchor and mandrel, be disposed with the packing element, mechanical slips and the friction component that are arranged on mandrel; Insert in hydraulic anchor and mandrel and be provided with volume tube; Described packing element comprises the packing element body, described packing element body comprises head end packing element body, middle part packing element body and end packing element body, head end packing element body, middle part packing element body and end packing element body are integral structure, and the hardness of head end packing element body and end packing element body is higher than middle part packing element body.
Described packing element body is three stage structure, comprise head end packing element body, end packing element body and a middle part packing element body, and the junction of head end packing element body and end packing element body and middle part packing element body is provided with deformation space.
Be provided with metallic supports in described head end packing element body and end packing element body.
Described metallic supports is arranged on the contact position of head end packing element body and end packing element body and packer metalwork.
Be provided with step in described mandrel, an end of volume tube is conflicted on described step.
Compared with prior art, the beneficial effect that reaches of the present invention shows:
1, in the present invention, employing " end of mandrel is connected with hydraulic anchor by screw thread, between the other end of hydraulic anchor and mandrel, is disposed with the packing element, mechanical slips and the friction component that are arranged on mandrel; Insert in hydraulic anchor and mandrel and be provided with volume tube " such technical scheme, operating pressure is high, operating temperature is high; Simple to operate, reliable, be beneficial to heavy duty service; Instrument tensile strength is high, is beneficial to the processing of down hole problem; Packing element cements, and after test jobs is completed, is not easy to occur falling piece; Succeeding in developing of this 105MPa test packer, filled up domestic blank, solve a HTHP Oil/gas Well measuring technology difficult problem, high temperature high pressure deep well is tested success rate bring up to 95% by 80%, can satisfy well depth and surpass 6000m, bottom pressure surpasses the needs of the high temperature high pressure deep well test of 100MPa, makes China's high temperature high pressure deep well measuring technology be in world first-class technical level.
2, in the present invention, described packing element body comprises head end packing element body, middle part packing element body and end packing element body, head end packing element body, middle part packing element body and end packing element body are integral structure, and the hardness of head end packing element body and end packing element body is higher than middle part packing element body, two ends packing element body hardness is high make packing element present in the middle of soft both sides hard, this structure provides good stress during for the packing element distending, ensure the packing element sealing effectiveness, can bear 105MPa operting differential pressure and 177 ℃ of downhole temperatures.
3, in the present invention, described packing element body is three stage structure, comprise head end packing element body, end packing element body and a middle part packing element body, and the junction of head end packing element body and end packing element body and middle part packing element body is provided with deformation space, deformation space makes more easily sealing between the packing element body, and sealing effectiveness is better.
4, in the present invention, be provided with metallic supports in described head end packing element body and end packing element body, increased packing element intensity and pressure reduction ability to bear.
5, in the present invention, described metallic supports is arranged on the contact position of head end packing element body and end packing element body and packer metalwork, and metallic supports can be extruded to prevent packing element at the two ends of packing element formation dividing plate after the packing element distending.
6, the present invention is applicable to internal diameter 108mm ~ 170mm sleeve pipe, and packing element relies on the compression distending, and the annular space between packing tubing string and sleeve pipe can bear the seal pressure differential of 105MPa, thereby protect sleeve pipe under the temperature condition of 20 ℃ ~ 177 ℃.
7, the present invention solves the key technical problem that improves packer pressure reduction and temperature ability to bear, has been applied to test packer and has obtained good result, can be applicable on other casing packer, is with a wide range of applications.
8, in the present invention, be provided with step in mandrel, an end of volume tube is conflicted on described step, so just can guarantee that volume tube coordinates well with the mandrel inwall, better effects if.
Description of drawings
The present invention is described in further detail below in conjunction with specification drawings and specific embodiments, wherein:
Fig. 1 is structural representation of the present invention
Fig. 2 is the structural representation of packing element
Mark in figure:
1, hydraulic anchor, 2, packing element, 3, mechanical slips, 4, friction component, 5, mandrel, 6, volume tube, 21, head end packing element body, 22, middle part packing element body, 23, end packing element body, 24, metallic supports, 25, deformation space.
The specific embodiment
Embodiment 1
The invention discloses a kind of HTHP test packer, comprise hydraulic anchor, packing element, mechanical slips, friction component mandrel, one end of mandrel is connected with hydraulic anchor by screw thread, between the other end of hydraulic anchor and mandrel, be disposed with the packing element, mechanical slips and the friction component that are arranged on mandrel; Insert in hydraulic anchor and mandrel and be provided with volume tube; Described packing element comprises the packing element body, described packing element body comprises head end packing element body, middle part packing element body and end packing element body, head end packing element body, middle part packing element body and end packing element body are integral structure, and the hardness of head end packing element body and end packing element body is higher than middle part packing element body.
Embodiment 2
As preferred forms of the present invention, on the basis of above-described embodiment, described packing element body is three stage structure, comprise head end packing element body, end packing element body and a middle part packing element body, and the junction of head end packing element body and end packing element body and middle part packing element body is provided with deformation space.Be provided with metallic supports in described head end packing element body and end packing element body.Described metallic supports is arranged on the contact position of head end packing element body and end packing element body and packer metalwork.Be provided with step in described mandrel, an end of volume tube is conflicted on described step.
Below of the present invention one concrete application example, the numbering representative meaning in figure: 1-hydraulic anchor, 2-packing element, 3-mechanical slips, 4-friction component, 5-mandrel, 6-volume tube.
105MPa test packer is a kind of mechanical compression type test packer for the Oil/gas Well test jobs, formed by hydraulic anchor 1, packing element 2, mechanical slips 3, friction component 4, mandrel 5,6 six parts of volume tube, packing element 2, mechanical slips 3, friction component 4 are arranged on mandrel 5 successively, again mandrel 5 and hydraulic anchor 1 are utilized screwed connection, at last volume tube 6 is inserted in mandrel 5 and hydraulic anchor 1 from front end.Described mechanical slips, friction component, hydraulic anchor and volume tube etc. are all the state of the art.Its operating principle is: utilize tubing string that this packer is transferred to predetermined tubing depth in well, by the rotation tubing string, drive carries friction component 4 rotations and makes its transposition, transfer tubing string, the friction component 4 that has replaced can provide friction in down stroke to push mechanical slips 3 open, and mechanical slips 3 stretches and is anchored on internal surface of sleeve pipe, continue to issue tubing string, tubing string weight will press off packing element 2, and the annular space between packing well lower tubular column and sleeve pipe, be beneficial to carry out test jobs whereby.After test jobs finished, the upper lifting pipe post got final product deblocking packer, trips out downhole tool.
Claims (4)
1. a HTHP is tested packer, comprise hydraulic anchor (1), packing element (2), mechanical slips (3), friction component (4) mandrel (5), it is characterized in that: an end of mandrel (5) is connected with hydraulic anchor (1) by screw thread, between the other end of hydraulic anchor (1) and mandrel (5), be disposed with the packing element (2), mechanical slips (3) and the friction component (4) that are arranged on mandrel (5); Insert in hydraulic anchor (1) and mandrel (5) and be provided with volume tube (6); Described packing element (2) comprises the packing element body, described packing element body comprises head end packing element body (21), middle part packing element body (22) and end packing element body (23), head end packing element body (21), middle part packing element body (22) and end packing element body (23) are integral structure, and the hardness of head end packing element body (21) and end packing element body (23) is higher than middle part packing element body (22).
2. HTHP according to claim 1 is tested packer, it is characterized in that: described packing element body is three stage structure, comprise head end packing element body (21), end packing element body (23) and middle part packing element (a 2) body, and the junction of head end packing element body (21) and end packing element body (23) and middle part packing element (2) body is provided with deformation space (25).
3. HTHP test packer according to claim 1, is characterized in that: be provided with metallic supports (24) in described head end packing element body (21) and end packing element body (23).
4. HTHP according to claim 1 is tested packer, it is characterized in that: described metallic supports (24) is arranged on the contact position of head end packing element body (21) and end packing element body (23) and packer metalwork.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210542256.6A CN103104213B (en) | 2012-12-14 | 2012-12-14 | HTHP test packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210542256.6A CN103104213B (en) | 2012-12-14 | 2012-12-14 | HTHP test packer |
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| Publication Number | Publication Date |
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| CN103104213A true CN103104213A (en) | 2013-05-15 |
| CN103104213B CN103104213B (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210542256.6A Active CN103104213B (en) | 2012-12-14 | 2012-12-14 | HTHP test packer |
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| CN (1) | CN103104213B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257280A (en) * | 2015-11-05 | 2016-01-20 | 大庆鸿润源石油科技开发有限公司 | Lifting pressure testing device |
| CN105298434A (en) * | 2015-11-23 | 2016-02-03 | 天鼎联创密封技术（北京）有限公司 | Rubber barrel capable of resisting high-temperature steam, compressed type packer and sealing method |
| CN106522918A (en) * | 2016-10-31 | 2017-03-22 | 中国石油集团川庆钻探工程有限公司 | Testing operation pipe column capable of achieving straight pushing well killing and formation testing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4296806A (en) * | 1979-10-05 | 1981-10-27 | Otis Engineering Corporation | High temperature well packer |
| CN1465845A (en) * | 2002-07-06 | 2004-01-07 | 李原记 | Novel packer |
| CN201262064Y (en) * | 2008-09-26 | 2009-06-24 | 逄瑞龙 | Compression type glue barrel with shoulder protection function |
| CN201730586U (en) * | 2010-07-26 | 2011-02-02 | 于成龙 | Four-rubber cylinder compression packer |
| CN202441321U (en) * | 2012-01-12 | 2012-09-19 | 金悦 | Rubber cylinder of packer |
-
2012
- 2012-12-14 CN CN201210542256.6A patent/CN103104213B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4296806A (en) * | 1979-10-05 | 1981-10-27 | Otis Engineering Corporation | High temperature well packer |
| CN1465845A (en) * | 2002-07-06 | 2004-01-07 | 李原记 | Novel packer |
| CN201262064Y (en) * | 2008-09-26 | 2009-06-24 | 逄瑞龙 | Compression type glue barrel with shoulder protection function |
| CN201730586U (en) * | 2010-07-26 | 2011-02-02 | 于成龙 | Four-rubber cylinder compression packer |
| CN202441321U (en) * | 2012-01-12 | 2012-09-19 | 金悦 | Rubber cylinder of packer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257280A (en) * | 2015-11-05 | 2016-01-20 | 大庆鸿润源石油科技开发有限公司 | Lifting pressure testing device |
| CN105298434A (en) * | 2015-11-23 | 2016-02-03 | 天鼎联创密封技术（北京）有限公司 | Rubber barrel capable of resisting high-temperature steam, compressed type packer and sealing method |
| CN106522918A (en) * | 2016-10-31 | 2017-03-22 | 中国石油集团川庆钻探工程有限公司 | Testing operation pipe column capable of achieving straight pushing well killing and formation testing method thereof |
| CN106522918B (en) * | 2016-10-31 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司 | Test operation tubular column capable of realizing direct-push kill well and stratum test method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103104213B (en) | 2016-01-13 |
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Effective date of registration: 20210719 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Address before: The 1 section of No. 3 company Chuanqing Drilling Technology Information Office Chenghua District Green Road 610051 Chengdu City, Sichuan Province Patentee before: CNPC Chuanqing Drilling Engineering Co.,Ltd. |