CN104196486B - A kind of negative pressure set packer - Google Patents
A kind of negative pressure set packer Download PDFInfo
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- CN104196486B CN104196486B CN201410453363.0A CN201410453363A CN104196486B CN 104196486 B CN104196486 B CN 104196486B CN 201410453363 A CN201410453363 A CN 201410453363A CN 104196486 B CN104196486 B CN 104196486B
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- piston shaft
- cylinder barrel
- sealing ring
- current limliting
- limliting body
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Abstract
A kind of negative pressure set packer, relates to the packer used in a kind of oil exploitation engineer operation, setting particularly to a kind of down-hole simulation extracting device of oil.Including piston shaft, current limliting body, cylinder barrel, piston shaft one end is wholely set piston, piston shaft hollow, current limliting body is threaded in one end of piston shaft opening, and current limliting body connects with piston shaft, cylinder barrel is nested with outside piston shaft, arranging sealing ring between current limliting body and cylinder barrel, sealing ring is nested with on piston shaft, and the two ends of sealing ring closely coordinate compression by current limliting body, cylinder barrel respectively with piston shaft, sealing ring is one section of elastic body, arranges pressure guide hole on the piston shaft corresponding with sealing ring；Forming step between piston shaft and piston, the free end of cylinder barrel is spacing by step, and the piston shaft inside cylinder barrel arranges pressure guide hole；The sidewall of current limliting body arranges apopore radially.This packer is safe and reliable, simple and reasonable for structure, manufacture, easy for installation.
Description
Technical field
The present invention relates to the packer used in a kind of oil exploitation engineer operation, setting particularly to a kind of down-hole simulation extracting device of oil.
Prior art
When horizontal well surveying production profile, the packing device on hollow oil-well pump top need to be fixed in pit shaft, the hollow plunger of oil well pump is separated to be moved up and down with tubing string, and simulation oil well produces, and testing tool is then removed by the hollow plunger of hollow oil-well pump and carries out test jobs.Setting and the disengagement mode that packing anchoring device is common at present is broadly divided into mechanically and hydraulically two kinds；Mechanical system is to realize setting by rotation and put-on and delegated tubing string and separate, and this technology is easily implemented in big pit shaft, and is difficult to carry out in the well of φ 139.7mm sleeve pipe；Hydraulic way is by building the pressure in tubing string, then reach setting mechanism setting while realize separate, enter under setting instrument, mainly realized by little oil pipe or coiled tubing, owing to this measuring technology can not be used for reference also in starting stage, the packing form of setting instrument and structure.
The instrument patent realizing blocking setting grappling back-off packer when being presently used for oil well test has:
(1) a kind of calker for the test of minor diameter coiled tubing, number of patent application is: 201320142452.4, this calker, is connected with coiled tubing coupling part and goes into the well, and stratum is tested by auxiliary coiled tubing with test instrunment.This calker can depart from coiled tubing before production test, makes coiled tubing continue traveling downwardly and complete production test with test instrunment, and test jobs can propose ground with coiled tubing and test instrunment after terminating in the lump.This blanking plug seals the annular space of coiled tubing and seating nipple in minor diameter coiled tubing test jobs；Can be locked in seating nipple during coiled tubing is tested, it is also possible to by the way of upper lifting pipe post successively, it is achieved the disengaging with coiled tubing and unblock, thus solve that minor diameter coiled tubing is meticulous cannot the problem of going down downforce.
(2) for the packer set mechanism of coiled tubing, number of patent application is: 201220655168.2, this packer set mechanism, including central canal and setting unit, described central canal includes being provided with wear ring between central upper portion pipe and lower central pipe described in the central upper portion pipe being threaded connection and lower central pipe, and this packer set mechanism also includes righting unit and filter element；Being sequentially installed with described righting unit and the filter element of fixing connection on described central upper portion pipe, described setting unit is arranged on described lower central pipe, and this setting unit is fixing with described filter element to be connected.Using annulus fluid supercharging, safety and stability, the suitability extensively, are particularly well-suited in pit shaft the packer set mechanism having the coiled tubing of the working environment of the circulation fluids such as doping solid particle such as proppant.
In sum, prior art is not integrated blocking and the effect of both base sealed packers.
When φ 139.7mm sleeve pipe horizontal well water exploration surveys production profile, need to use hollow oil-well pump simulated production to coordinate test water detection.After hollow oil-well pump enters well, top the grappling back-off packer pressure foot connected is enclosed in internal surface of sleeve pipe.Owing to the endoporus of hollow oil-well pump long-plunger is TCH test channel, cannot directly build the pressure in oil well pump, make grappling back-off packer can not complete action that is setting and that separate.
Summary of the invention
Present invention aim at providing a kind of safer, reliable and a kind of negative pressure base sealed packer of simple in construction.
The present invention includes piston shaft, current limliting body, cylinder barrel, described piston shaft one end is wholely set piston, piston shaft hollow, current limliting body is threaded in one end of described piston shaft opening, described current limliting body connects with described piston shaft, described cylinder barrel is nested with outside described piston shaft, between described current limliting body and described cylinder barrel, sealing ring is set, described sealing ring is nested with on described piston shaft, the two ends of described sealing ring are respectively by described current limliting body, cylinder barrel closely coordinates compression with piston shaft, described sealing ring is one section of elastic body, the described piston shaft corresponding with described sealing ring arranges pressure guide hole；Forming step between described piston shaft and described piston, the free end of described cylinder barrel is spacing by described step, and the piston shaft inside described cylinder barrel arranges pressure guide hole；The sidewall of described current limliting body arranges apopore radially.
Sealing ring of the present invention is at least one, is respectively provided with middle sliding sleeve between described adjacent two sealing rings, and described middle sliding sleeve is nested with on described piston shaft.
Sealing ring of the present invention is rubber body, and the two ends of described rubber body coordinate compression by described current limliting body, middle sliding sleeve, cylinder barrel with described piston shaft respectively.
Sealing ring of the present invention is made up of rubber body, two rigidity bodys, and said two rigidity body secure fit, in described rubber tube body, is provided with space between said two rigidity body, described space is corresponding with described pressure guide hole.
The present invention arranges check valve ball device in the apopore of described current limliting body, described check valve ball device includes valve ball, spring, pressure cap, described valve ball, spring, pressure cap are separately positioned in described apopore, described valve ball gets lodged in the inner inlet of described apopore, described pressure cap is threaded in described apopore, described spring is arranged between described valve ball, pressure cap, and the two ends of described spring are conflicted respectively on described valve ball and pressure cap, arrange axially extending bore in the middle of described pressure cap.
When the present invention uses, go into the well after being connected with coiled tubing, when in the hollow plunger being inserted into hollow oil rig, pressurize in well head coiled tubing, liquid arranges an installation through hole from the wing passage of current limliting body i.e. check valve ball device or sidewall, enter by coiled tubing and oil pipe, the annular space that hollow plunger endoporus is formed, rising along with negative pressure base sealed packer internal pressure, sealing ring expands, annular space between coiled tubing and the hollow plunger endoporus on negative pressure base sealed packer top forms close encapsulation chamber, along with coiled tubing inside, the pressure in close encapsulation chamber constantly rises, pressure transmission in annular space is to the setting mechanism on hollow oil-well pump top, when reaching its setting pressure, grappling back-off packer realize setting and disconnect；Coiled tubing pressure release, the sealing ring of negative pressure base sealed packer shrinks deblocking, and device trips out pit shaft along with coiled tubing.
The present invention compared with prior art, has following significantly advantage: utilize the mode of hydraulic pressure to realize setting, and blocking coiled tubing and the annular space of hollow oil-well pump hollow plunger, it is achieved build the pressure are safer compared with the mode rotated, reliable；Utilize valve ball compression spring make cavity connect with annular space enforcement pressure transmission, complete back-off packer setting, it is simple and reasonable for structure, manufacture, easy for installation.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
Specific embodiment
As shown in Figure 1, this negative pressure base sealed packer, including piston shaft 1, current limliting body 2, cylinder barrel 4, piston shaft 1 one end arranges piston 5, piston shaft 1 hollow, current limliting body 2 is threaded in one end of piston shaft 1 opening, current limliting body 2 connects with piston shaft 1, cylinder barrel 4 is nested with outside piston shaft 1, sealing ring 7 is set between current limliting body 2 and cylinder barrel 4, sealing ring 7 is nested with on piston shaft 1, the two ends of sealing ring 7 are respectively by current limliting body 2, cylinder barrel 4 coordinates compression with piston shaft 1, sealing ring 7 is one section of elastic body, step 6 is formed between piston shaft 1 and piston 5, the free end of cylinder barrel 4 is spacing by step 6, the piston shaft 1 corresponding with sealing ring 7 arranges pressure guide hole 11, 11-1；The sidewall of current limliting body 2 arranges apopore 23 radially.
Preferably, sealing ring 7 at least one, middle sliding sleeve 3 it is respectively provided with between adjacent two sealing rings 7, middle sliding sleeve 9 is nested with on piston shaft 1, the two ends of each sealing ring 7 coordinate compression by the middle sliding sleeve 3 at two ends with piston shaft 1 respectively, end near the sealing ring 7 at piston shaft 1 two ends coordinates compression by current limliting body 2, cylinder barrel 4 with piston shaft, is respectively provided with pressure guide hole 11,11-1 on the piston shaft 1 corresponding with each sealing ring 7.
Preferably, sealing ring 7 is rubber body, and the two ends of rubber body coordinate compression by current limliting body 2, middle sliding sleeve 3, cylinder barrel 4 with piston shaft 1 respectively.
Preferably, sealing ring 7 is made up of 13, two rigidity bodys 8,9 of rubber body, and two rigidity body 8,9 secure fit, in rubber body 13 body, are provided with space between two rigidity bodys 8,9, and space and pressure guide hole 11,11-1 are corresponding.
In order to ensure the cylinder barrel 4 extruding force to sealing ring 7, on piston shaft 1 lateral wall coordinated with cylinder barrel 4, step 16 is set, step 16 is conflicted with step 15-1, annular chamber 17 is formed between step 15-2 and step 16, arranging a through hole 18 on the piston shaft 1 corresponding with annular chamber 17, piston shaft 1 inner chamber is connected by through hole 18 with annular chamber 17；The cylinder barrel 4 of annular chamber 17 both sides is sealing ring 25,19 together with being respectively provided with at least between piston shaft 1.
This base sealed packer, check valve ball device is set in the apopore 23 of current limliting body 2, check valve ball device includes valve ball 20, spring 21, pressure cap 22, valve ball 20 gets lodged in the inner inlet of apopore 23, pressure cap 22 is threaded in apopore, spring 21 is arranged between valve ball 20, pressure cap 22, and the two ends of spring 21 are conflicted respectively on valve ball 20 and pressure cap 22, arranges axially extending bore 24 in the middle of pressure cap 22；Check valve ball device can ensure that the pressure of water in piston shaft, it is ensured that the expansion effect of sealing ring, i.e. after pressure enough promotes valve ball, outlet just can open water outlet.
Claims (2)
1. a negative pressure set packer, including piston shaft, current limliting body, cylinder barrel, described piston shaft one end is wholely set piston, piston shaft hollow, current limliting body is threaded in one end of described piston shaft opening, described current limliting body connects with described piston shaft, described cylinder barrel is nested with outside described piston shaft, it is characterized in that arranging sealing ring between described current limliting body and described cylinder barrel, described sealing ring is nested with on described piston shaft, described sealing ring is respectively by described current limliting body, cylinder barrel and piston shaft closely cooperate compression, the described piston shaft corresponding with described sealing ring arranges pressure guide hole；Forming step between described piston shaft and described piston, the free end of described cylinder barrel is spacing by the step formed between described piston shaft and described piston；On the lateral wall of the described piston shaft coordinated with described cylinder barrel, step is set, step on the lateral wall of described piston shaft is conflicted with the first step on described cylinder barrel, forms annular chamber between the second step on described cylinder barrel and the step on the lateral wall of described piston shaft；The through hole connected with annular chamber by piston shaft inner chamber is set on the piston shaft inside described cylinder barrel；The sidewall of described current limliting body arranges apopore radially；Described sealing ring is made up of rubber body, two rigidity bodys, and said two rigidity body secure fit, in described rubber tube body, is provided with space between said two rigidity body, described space is corresponding with described pressure guide hole；Described sealing ring is two, arranges middle sliding sleeve between described sealing ring, and described middle sliding sleeve is nested with on described piston shaft.
A kind of negative pressure set packer the most according to claim 1, it is characterized in that arranging check valve ball device in the apopore of described current limliting body, described check valve ball device includes valve ball, spring, pressure cap, described valve ball gets lodged in the inner inlet of described apopore, described pressure cap is threaded in described apopore, described spring is arranged between described valve ball, pressure cap, arranges axially extending bore in the middle of described pressure cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410453363.0A CN104196486B (en) | 2014-09-09 | 2014-09-09 | A kind of negative pressure set packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410453363.0A CN104196486B (en) | 2014-09-09 | 2014-09-09 | A kind of negative pressure set packer |
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| CN104196486A CN104196486A (en) | 2014-12-10 |
| CN104196486B true CN104196486B (en) | 2016-08-24 |
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| CN201410453363.0A Active CN104196486B (en) | 2014-09-09 | 2014-09-09 | A kind of negative pressure set packer |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510904A (en) * | 2012-06-28 | 2014-01-15 | 北京格瑞迪斯石油技术有限公司 | Shaft bottom leakage-proof plugging device for well cementation |
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| US3524503A (en) * | 1968-09-05 | 1970-08-18 | Halliburton Co | Cementing tool with inflatable packer and method of cementing |
| SE447922B (en) * | 1982-07-09 | 1986-12-22 | Arjeng Elektromekan | Rock crack sealing medium injection |
| DE8805273U1 (en) * | 1988-04-21 | 1989-08-24 | F. Willich Gmbh & Co, 4600 Dortmund, De | |
| DE8906126U1 (en) * | 1989-05-18 | 1990-04-19 | Bergwerksverband Gmbh, 4300 Essen, De | |
| US5465628A (en) * | 1992-09-22 | 1995-11-14 | Timmons; Robert D. | Multiple sampling lysimeter |
| US6595282B2 (en) * | 2001-04-10 | 2003-07-22 | Baker Hughes Incorporated | Fluid filled drill pipe plug |
| CN2573663Y (en) * | 2002-09-26 | 2003-09-17 | 新疆石油管理局钻井工艺研究院 | Underbalance borehole well shut-in device |
| CN101302925A (en) * | 2008-06-19 | 2008-11-12 | 寿国伟 | Quick plugging device |
| CN201280910Y (en) * | 2008-09-03 | 2009-07-29 | 季会军 | Anti-clipping fracturing packer |
| CN101769139B (en) * | 2008-12-30 | 2012-11-28 | 杨东城 | Compressed self-sealed well-flushing packer |
| CN201635702U (en) * | 2010-02-11 | 2010-11-17 | 张国军 | Packer |
| CN201650204U (en) * | 2010-04-23 | 2010-11-24 | 蒋明军 | Water distribution separator |
| CN102296978B (en) * | 2011-07-29 | 2013-11-20 | 安阳鑫龙煤业(集团)有限责任公司 | Coal-face flooding hole packer |
| CN203257369U (en) * | 2013-04-17 | 2013-10-30 | 中国石油大学(北京) | Built-in shaft blocking device of reservoir physical model |
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2014
- 2014-09-09 CN CN201410453363.0A patent/CN104196486B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510904A (en) * | 2012-06-28 | 2014-01-15 | 北京格瑞迪斯石油技术有限公司 | Shaft bottom leakage-proof plugging device for well cementation |
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| CN104196486A (en) | 2014-12-10 |
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Effective date of registration: 20180718 Address after: 225009 No. 188, Weiyang Road, Yangzhou, Jiangsu Co-patentee after: China Petroleum & Chemical Corporation Jiangsu Oilfield Branch Patentee after: Sinopec Corp. Co-patentee after: Jiangsu oil field Mining Development Co., Ltd. Address before: 225009 No. 188, Weiyang Road, Yangzhou, Jiangsu Co-patentee before: China Petroleum & Chemical Corporation Jiangsu Oilfield Branch Patentee before: Sinopec Corp. |