CN103104213B - HTHP test packer - Google Patents
HTHP test packer Download PDFInfo
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- CN103104213B CN103104213B CN201210542256.6A CN201210542256A CN103104213B CN 103104213 B CN103104213 B CN 103104213B CN 201210542256 A CN201210542256 A CN 201210542256A CN 103104213 B CN103104213 B CN 103104213B
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- packing element
- element body
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- hydraulic anchor
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Abstract
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 hydraulic anchor and the other end of mandrel, be disposed with the packing element be arranged on mandrel, mechanical slips and friction component; Volume tube is inserted with in hydraulic anchor and mandrel; Described packing element comprises 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.Adopt the present invention, effectively can separate tubing and casing, improve test pressure differential, expand test jobs Stress control window, be conducive to reservoir pressure release.For raising test success rate, reduce operating risk and be significant.
Description
Technical field
The present invention relates to the packer in HTHP Oil/gas Well test jobs.
Background technology
Along with China's oil, deepening continuously of natural gas exploration and development are 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 in Sichuan province, shaft bottom maximally stressor layer reaches 131MPa, if take acid stimulation measure to reservoir again, bottom-hole treating pressure is the highest even reaches 210MPa.The downhole condition of harshness like this, when carrying out test jobs, proposes very high requirement to the bearing capacity of downhole testing packer.In test string, test packer mainly plays the effect of isolation tube and casing in downhole, is one of instrument of most critical.
Publication number is CN202531094U, publication date is that the Chinese patent literature on November 14th, 2012 discloses a kind of compression packer, for solve conventional packer use short, the later stage operating risk of period of validity large, to oil pressure adaptive faculty difference and problems such as well-flushing channel switch difficulty and designing, mainly comprise connect central tube upper and lower joint, the bushing pipe of suit central tube, suit bushing pipe packing element, advance cover and deblocking piston etc.With at present domestic and international compression packer compared with, this patent application packer setting is airtight and do not affect by tubing pressure fluctuation, and sealing is reliable; Eliminate well-flushing passage, make to set, deblocking is more reliable more flexible, avoid the situation that passage is not opened or fitted badly; Adopt hydraulic pressure and machinery two kinds of decompress(ion) modes to support the use, there is deblocking, sand control two-way safeguarding function; The filtration cover arranged improves the condition of work understanding envelope piston, improves the reliability of operation.
But with the existing packer that above-mentioned patent document is representative, its most high workload pressure reduction can only reach 70MPa, due to the deficiency of test packer bearing capacity, cause test safety Stress control window limited, careless slightlyly namely can the crowded of packer be caused because pressure reduction is excessive to ruin, cause the even full well of test crash to scrap.
Therefore, test company all tests packer at effort exploitation HTHP both at home and abroad at present.But domestic do not have 105MPa to test packer, abroad as the fewer companies such as Schlumberger, Halliburton has 105MPa to test packer, complex structure, the cost of overhaul are high, do not match with domestic dependence test instrument, effectively cannot 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 technical problem existing for above-mentioned prior art, the present invention proposes a kind of HTHP test packer, adopting the present invention, effectively can separate tubing and casing, improve test pressure differential, expanding test jobs Stress control window, being conducive to reservoir pressure release.For raising test success rate, reduce operating risk and be significant.
The present invention realizes by adopting following technical proposals:
A kind of HTHP test packer, comprise hydraulic anchor, packing element, mechanical slips, friction component mandrel, it is characterized in that: one end of mandrel is connected with hydraulic anchor by screw thread, between hydraulic anchor and the other end of mandrel, be disposed with the packing element be arranged on mandrel, mechanical slips and friction component; Volume tube is inserted with in hydraulic anchor and mandrel; Described packing element comprises 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.
Metallic supports is provided with 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.
Being provided with step in described mandrel, conflicts on described step in one end of volume tube.
Compared with prior art, the beneficial effect that the present invention reaches shows:
1, in the present invention, employing " one end of mandrel is connected with hydraulic anchor by screw thread, between hydraulic anchor and the other end of mandrel, is disposed with the packing element be arranged on mandrel, mechanical slips and friction component; Volume tube is inserted with in hydraulic anchor and mandrel " 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 process of down hole problem; Packing element cements, and after test jobs completes, is not easy to occur falling block; This 105MPa tests succeeding in developing of packer, fill up domestic blank, solve a HTHP Oil/gas Well measuring technology difficult problem, high temperature high pressure deep well is tested success rate and bring up to 95% by 80%, well depth can be met more than 6000m, the needs that bottom pressure is tested more than the high temperature high pressure deep well of 100MPa, make China's high temperature high pressure deep well measuring technology be in world-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, and to make packing element present middle soft both sides hard, this structure provides good stress for during packing element distending, ensure packing element sealing effectiveness, 105MPa operting differential pressure and 177 DEG C of downhole temperatures can be born.
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 to seal between 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, add 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 after packing element distending, metallic supports can be extruded to prevent packing element at the two ends of packing element formation dividing plate.
6, the present invention is applicable to internal diameter 108mm ~ 170mm sleeve pipe, and packing element relies on compression distending, and the annular space between packing tubing string and sleeve pipe, can bear the seal pressure differential of 105MPa, thus protect sleeve pipe under the temperature condition of 20 DEG C ~ 177 DEG C.
7, the present invention solves the key technical problem improving packer pressure reduction and temperature capacity, has been applied to test packer and has obtained good result, can be applicable on other casing packer, be with a wide range of applications.
8, in the present invention, be provided with step in mandrel, conflicting on described step in one end of volume tube, so just can ensure that volume tube coordinates well with mandrel inwall, better effects if.
Accompanying drawing explanation
Below in conjunction with specification drawings and specific embodiments, the present invention is described in further detail, 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.
Detailed description of the invention
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 hydraulic anchor and the other end of mandrel, be disposed with the packing element be arranged on mandrel, mechanical slips and friction component; Volume tube is inserted with in hydraulic anchor and mandrel; Described packing element comprises 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.Metallic supports is provided with 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.Being provided with step in described mandrel, conflicts on described step in one end of volume tube.
Embodiment 3
Below an embody rule example of the present invention, the numbering representative meaning in figure: 1-hydraulic anchor, 2-packing element, 3-mechanical slips, 4-friction component, 5-mandrel, 6-volume tube.
It is a kind of mechanical compression type for oil and gas well testing operation test packer that 105MPa tests packer, be made up of hydraulic anchor 1, packing element 2, mechanical slips 3, friction component 4, mandrel 5, volume tube 6 six parts, 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, finally 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 rotating tubing string, drive carries friction component 4 rotation makes it replace, transfer tubing string, the friction component 4 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, the annular space whereby between packing well lower tubular column and sleeve pipe, be beneficial to carry out test jobs.After test jobs terminates, upper lifting pipe post gets final product deblocking packer, trips out downhole tool.
Claims (3)
1. a HTHP test packer, comprise hydraulic anchor (1), packing element (2), mechanical slips (3), friction component (4), mandrel (5), it is characterized in that: one end of mandrel (5) is connected with hydraulic anchor (1) by screw thread, between hydraulic anchor (1) and the other end of mandrel (5), be disposed with the packing element (2) be arranged on mandrel (5), mechanical slips (3) and friction component (4); Volume tube (6) is inserted with in hydraulic anchor (1) and mandrel (5); Described packing element (2) comprises 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 in 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); 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 body (22), and head end packing element body (21) and end packing element body (23) are provided with deformation space (25) with the junction at middle part packing element body (22).
2. 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).
3. HTHP test packer according to claim 2, 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103104213A CN103104213A (en) | 2013-05-15 |
| CN103104213B true CN103104213B (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210542256.6A Active CN103104213B (en) | 2012-12-14 | 2012-12-14 | HTHP test packer |
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Families Citing this family (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 |
| CN105298434B (en) * | 2015-11-23 | 2017-12-22 | 天鼎联创密封技术（北京）有限公司 | Packing element, compression packer and the encapsulating method of high temperature steam |
| 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 |
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 |
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| Publication number | Publication date |
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| CN103104213A (en) | 2013-05-15 |
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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. |