CN103362470B - Oil/gas Well annular mechanical packing packer - Google Patents
Oil/gas Well annular mechanical packing packer Download PDFInfo
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- CN103362470B CN103362470B CN201210104635.7A CN201210104635A CN103362470B CN 103362470 B CN103362470 B CN 103362470B CN 201210104635 A CN201210104635 A CN 201210104635A CN 103362470 B CN103362470 B CN 103362470B
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- equilibrated valve
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Abstract
The invention discloses a kind of Oil/gas Well annular mechanical packing packer, relate to packer technology field, comprise pressure equaliser and set packing device, described pressure equaliser comprises equilibrated valve; Set packing device and comprise glue tube base, packing element, cone, slips, central tube, righting seat and lower contact one; Described equilibrated valve, central tube, glue tube base, packing element, cone, slips, righting seat, lower contact one are linked in sequence from top to bottom; Described equilibrated valve is connected to central tube upper end, and is positioned on glue tube base; Seal head in equilibrated valve coordinates with lower contact two pulling and inserting type in equilibrated valve.The present invention adopts coiled tubing once to go into the well repeatedly the mode of running fix packing different layers position, can realize carrying out successively packing annular space to multilayered reservoir Oil/gas Well, thus is convenient to successively carry out separate layer acid treatment pressing crack construction after abrasive perforating.
Description
Technical field
The present invention relates to packer technology field, exactly relate to a kind of Oil/gas Well annular mechanical packing packer.
Background technology
There is multiple payzone in the vertical in most domestic oil-gas reservoir, and mostly comparatively be thin interbed, what have even reaches more than 5 layers, in order to improve single well productivity and oil gas field ultimate recovery, after oil gas well drilling has been constructed, implementing fracture acidizing has been the important modification measures realizing well production increment.To the well adopting sleeve pipe to complete, present stage mainly contains two kinds of modes, and one adopts multiple packer packing separate stratum fracfturing in sleeve pipe, opens sliding sleeve, successively transform from bottom to top, final combination producing by pitching.
If Authorization Notice No. is CN201778799U, authorized announcement date is that the Chinese patent literature on March 30th, 2011 discloses a kind of oil and gas well underground straddle packing layer-by-layer fracture acidizing tool tubular column structure, relate to the downhole tool manufacturing technology field of well production increment transformation, devise a kind of oil and gas well underground straddle packing layer-by-layer fracture acidizing tool tubular column structure that can realize multilayered reservoir successively fracture acidizing construction, the present invention connects safe dropper successively, circulating valve, locator, centralizing hydraulic anchor, upper packer, upper adjustment short circuit, sour device is sprayed in sandblasting, lower adjustment short circuit, lower packet, centralizer, the problem that prior art storey increase design layer position specific aim is not strong can be solved, there is the simple feature of structure.
But with the prior art that above-mentioned patent document is representative, still have the following disadvantages: 1) interval of a construction reformation is limited, be no more than at most 5 layers.2) enter well casing post in sleeve pipe complicated, instrument is many and external diameter large, easily sand card occurs, is unfavorable for that the later stage plays drilling and repairing well.
And for example Authorization Notice No. is CN2692340, and authorized announcement date is that the Chinese patent literature on April 13rd, 2005 discloses the hydraulic double cylinder of a kind of petroleum industry use without anchoring packer, is applicable to the oil production by layer technique of oil well.The present invention has Hydraulic Equilibrium Mechanism, setting mechanism and screw thread Bu Jin mechanism, and two ends are installed, lower contact.Setting mechanism is made up of packing element and hydraulic cylinder, and upper piston is arranged in hydraulic cylinder; Inner central tube, top exterior central tube and bottom exterior central tube wear wherein, and inner central tube is connected with upper and lower joint; Top exterior central tube is connected with Hydraulic Equilibrium Mechanism, and bottom exterior central tube is connected with screw thread Bu Jin mechanism, setting mechanism is set up a hydraulic cylinder.Owing to adding a hydraulic cylinder, hydraulic cylinder compression area is strengthened, pressure needed for packer setting reduces.Have and set the function that pressure is low, down-hole string safety factor is high.Ensure that packer can safety, low pressure set.
But with the prior art that above-mentioned patent document is representative, packer cannot down-hole diverse location repeatedly on put to put and set deblocking, cannot to different payzones respectively packing implement fracture acidizing storey increase design.
Another kind adopts many cover spraycans abrasive perforating from bottom to top, adds sand construction by sleeve pipe and oil pipe.Although this tubing string external diameter is less, structure is simple, and there is interlayer can not effectively packing, transforms scale and limited in one's ability.
Summary of the invention
For solving the problems of the technologies described above, the present invention proposes a kind of Oil/gas Well annular mechanical packing packer, the present invention adopts coiled tubing once to go into the well repeatedly the mode of running fix packing different layers position, can realize carrying out successively packing annular space to multilayered reservoir Oil/gas Well, thus be convenient to successively carry out separate layer acid treatment pressing crack construction after abrasive perforating.
The present invention realizes by adopting following technical proposals:
A kind of Oil/gas Well annular mechanical packing packer, comprises pressure equaliser and sets packing device, it is characterized in that: described pressure equaliser comprises equilibrated valve; Set packing device and comprise glue tube base, packing element, cone, slips, central tube, righting seat and lower contact one; Described equilibrated valve, central tube, glue tube base, packing element, cone, slips, righting seat, lower contact one are linked in sequence from top to bottom; Described equilibrated valve is connected to central tube upper end, and is positioned on glue tube base; Seal head in equilibrated valve coordinates with lower contact two pulling and inserting type in equilibrated valve.
Described central tube upper end is threaded connection the lower contact two of equilibrated valve.Central tube is provided with keyway.
Described pressure equaliser with set packing device and be connected with screw thread from top to bottom.
The lower end conical surface of described cone is for boring in slips.
Described righting seat is set deblocking by the frictional force of wiper block and internal surface of sleeve pipe provide opposite force for packer putting put.
Described lower contact one is for connecting lower tool or tubing string.
Compared with prior art, the beneficial effect that reaches of the present invention is as follows:
1, compared with Authorization Notice No. to be CN201778799U patent document the be prior art of representative, the packer that the present invention adopts comprises pressure equaliser and sets packing device, seal head in equilibrated valve coordinates with lower contact two pulling and inserting type in equilibrated valve, like this when equilibrated valve is when transferring tubing string and making packer setting, seal head in equilibrated valve inserts in the lower contact two of equilibrated valve, make sealing in packing organ pipe, pipe outer tunnel in the pipe that packing packer is upper and lower, need by upper lifting pipe post, the seal head in equilibrated valve to be extracted from the lower contact two of equilibrated valve during deblocking, packer two-way pressure is balanced, be convenient to deblocking, thus packer of the present invention can down-hole diverse location repeatedly on put to put and set deblocking, can to different multiple payzones respectively packing implement fracture acidizing storey increase design, and there is the simple feature of structure, adopt the present invention to can be hypotonic, that poor efficiency thin layer oil gas reservoir development provides economical and efficient storey increase design means.
Meanwhile, the righting seat that the present invention is arranged can allow packer be between two parties, ensures that tubing string is not partially, is set deblocking and provides opposite force simultaneously by the frictional force between itself and internal surface of sleeve pipe for packer putting put; The equilibrated valve arranged makes packer two-way pressure balance when packer needs deblocking by upper lifting pipe post, is convenient to deblocking.
Compared with Authorization Notice No. to be CN2692340 patent document the be prior art of representative, seal head in the present invention in equilibrated valve coordinates with lower contact two pulling and inserting type in equilibrated valve, like this when equilibrated valve is when transferring tubing string and making packer setting, seal head in equilibrated valve inserts in the lower contact two of equilibrated valve, make sealing in packing organ pipe, pipe outer tunnel in the pipe that packing packer is upper and lower, need by upper lifting pipe post, the seal head in equilibrated valve to be extracted from the lower contact of equilibrated valve during deblocking, packer two-way pressure is balanced, be convenient to deblocking, thus packer of the present invention can down-hole diverse location repeatedly on put to put and set deblocking, can to different multiple payzones respectively packing implement fracture acidizing storey increase design, and there is the simple feature of structure, adopt the present invention to can be hypotonic, that poor efficiency thin layer oil gas reservoir development provides economical and efficient storey increase design means.
2, in the present invention, central tube is provided with keyway, tubing string is carried in decentralization process and make packer setting or deblocking.
Accompanying drawing explanation
Below in conjunction with specification drawings and specific embodiments, the present invention is described in further detail, wherein:
Fig. 1 is the structural representation of the present invention in down-hole
Mark in figure:
1, equilibrated valve, 2, glue tube base, 3, packing element, 4, cone, 5, slips, 6, central tube, 7, righting seat, 8, lower contact one, 9, seal head, 10, lower contact two, 11, wiper block.
Detailed description of the invention
Embodiment 1
The invention discloses a kind of Oil/gas Well annular mechanical packing packer, comprise pressure equaliser and set packing device, described pressure equaliser comprises equilibrated valve 1; Set packing device and comprise glue tube base 2, packing element 3, cone 4, slips 5, central tube 6, righting seat 7 and lower contact 1; Described equilibrated valve 1, central tube 6, glue tube base 2, packing element 3, cone 4, slips 5, righting seat 7, lower contact 1 are linked in sequence from top to bottom; Described equilibrated valve 1 is connected to central tube 6 upper end, and is positioned on glue tube base 2; Seal head 9 in equilibrated valve 1 coordinates with lower contact 2 10 pulling and inserting type in equilibrated valve 1.
Embodiment 2
With reference to Figure of description 1, preferred forms of the present invention is: comprise pressure equaliser and set packing device, described pressure equaliser comprises equilibrated valve 1; Set packing device and comprise glue tube base 2, packing element 3, cone 4, slips 5, central tube 6, righting seat 7 and lower contact 1; Described equilibrated valve 1, central tube 6, glue tube base 2, packing element 3, cone 4, slips 5, righting seat 7, lower contact 1 are linked in sequence from top to bottom; Described equilibrated valve 1 is connected to central tube 6 upper end, and is positioned on glue tube base 2; Seal head 9 in equilibrated valve 1 coordinates with lower contact 2 10 pulling and inserting type in equilibrated valve 1.Described central tube 6 upper end is threaded connection the lower contact 2 10 of equilibrated valve 1.Central tube 6 is provided with keyway.Described pressure equaliser with set packing device and be connected with screw thread from top to bottom.The lower end conical surface of described cone 4 is for boring in slips 5.Described righting seat 7 is set deblocking by the frictional force of wiper block 11 and internal surface of sleeve pipe provide opposite force for packer putting put.
The equilibrated valve 1 arranged is when transferring tubing string and making packer setting, seal head 9 in equilibrated valve 1 inserts in the lower contact 2 10 of equilibrated valve 1, make sealing in packing organ pipe, pipe outer tunnel in the pipe that packing packer is upper and lower, need by upper lifting pipe post, the seal head 9 in equilibrated valve 1 to be extracted from the lower contact 2 10 of equilibrated valve 1 during deblocking, packer two-way pressure is balanced, is convenient to deblocking; Glue tube base 2 is for supporting packing element 3; Packing element 3 is by extruding expansion packing central tube and casing annulus; The cone 4 lower end conical surface sets into slips 5 intramedullary expansion slips 5 for boring, and slips 5 sets posterior pyramids 4 upper surface extruding packing element 3 and applies setting force; Central tube 6 upper end is threaded connection the lower contact 2 10 of equilibrated valve 1, it has length keyway, tubing string is carried in decentralization process and makes packer setting or deblocking; Righting seat 7 can make packer be in middle position, and is set deblocking by the frictional force of wiper block 11 and internal surface of sleeve pipe provide opposite force for packer putting put; Lower contact 1 is for connecting lower tool or tubing string.
Predominant use of the present invention: in work progress, device of the present invention has following important function: when the equilibrated valve 1 of setting can make packer setting transferring tubing string, seal head 9 in equilibrated valve 1 inserts in the lower contact 2 10 of equilibrated valve 1, make sealing in packing organ pipe, pipe outer tunnel in the pipe that packing packer is upper and lower, packer needs by upper lifting pipe post, the seal head 9 in equilibrated valve 1 to be extracted from the lower contact 2 10 of equilibrated valve 1 during deblocking, packer two-way pressure is balanced, is convenient to deblocking; Packer is arranged on the lower end of equilibrated valve 1, by put put into row set and deblocking, thus separate payzone construct.
Embodiment 3:
Activities of the present invention: the present invention is made up of following structure when reality uses: be topmost coiled tubing, next coming in order connect CT connector, machinery is given up, hydraulic releasing, centralizer, spray gun, equilibrated valve 1, packer, collar locator, the guide shoe of connection bottom of tubing string, above-mentioned each parts are to be threaded, by above-mentioned parts composition tubing string, certain depth position in Oil/gas Well down-hole casing is arrived with under coiled tubing work vehicle, located by collar locator, on put and put tubing string and make packer setting, packing bottom is construction layer position, simultaneously, the spray gun being arranged on packer top also targeted by pre-perforation and fracture acidizing layer position, now equilibrated valve 1 closes the inner passage of its underpart tubing string, gang up with casing annulus in tubing string more than packer, then construction is started with fracturing unit truck by ground connecting line small displacement low pressure, first anti-base fluid is replaced by sleeve pipe, when base fluid is instead for after putting in place, load fluid is pumped into by coiled tubing, under the throttling action of spray tip, spray gun contains sand flow body at a high speed to sleeve pipe injection, penetrate sleeve-penetrating, then carry out reacting cycle well-flushing and wash out unnecessary sand grains, then acid solution is pumped into by coiled tubing small displacement, pump into acid solution or load fluid by sleeve pipe huge discharge simultaneously, and then reach highly pressurised liquid directly carries out construction reformation object to the interval penetrating sleeve-penetrating, after lower floor's transformation, fracturing unit truck termination of pumping pressure release, then, start Operation Tubing Aggregate, carry on tubing string, now equilibrated valve 1 has been communicated with the upper and lower pipe external and internal pressure of packer with tubing string moves, then transfers tubing string, and packer leaves sleeve pipe, removes packing, Operation Tubing Aggregate carries coiled tubing on continuing, and by the location of collar locator, makes spray gun aim at second construction interval, puts and put tubing string, packer setting, now can carry out construction reformation to spray gun to interval again, repeat said method, transformation operation can be carried out to multiple oil gas intervals of an oil well.
Claims (5)
1. an Oil/gas Well annular mechanical packing packer, comprises pressure equaliser and sets packing device, it is characterized in that: described pressure equaliser comprises equilibrated valve (1); Set packing device and comprise glue tube base (2), packing element (3), cone (4), slips (5), central tube (6), righting seat (7) and lower contact one (8); Described equilibrated valve (1), central tube (6), glue tube base (2), packing element (3), cone (4), slips (5), righting seat (7), lower contact one (8) are linked in sequence from top to bottom; Described equilibrated valve (1) is connected to central tube (6) upper end, and is positioned on glue tube base (2); Seal head (9) in equilibrated valve (1) coordinates with lower contact two (10) pulling and inserting type in equilibrated valve (1).
2. Oil/gas Well annular mechanical packing packer according to claim 1, it is characterized in that: described central tube (6) upper end is threaded connection the lower contact two (10) of equilibrated valve (1), and (6) are provided with keyway with central tube.
3. Oil/gas Well annular mechanical packing packer according to claim 1, is characterized in that: the lower end conical surface of described cone (4) is for boring in slips (5).
4. Oil/gas Well annular mechanical packing packer according to claim 1, is characterized in that: described righting seat (7) is set deblocking by the frictional force of wiper block (11) and internal surface of sleeve pipe provide opposite force for packer putting put.
5. Oil/gas Well annular mechanical packing packer according to claim 1, is characterized in that: described lower contact one (8) is for connecting lower tool or tubing string.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210104635.7A CN103362470B (en) | 2012-04-11 | 2012-04-11 | Oil/gas Well annular mechanical packing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210104635.7A CN103362470B (en) | 2012-04-11 | 2012-04-11 | Oil/gas Well annular mechanical packing packer |
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| Publication Number | Publication Date |
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| CN103362470A CN103362470A (en) | 2013-10-23 |
| CN103362470B true CN103362470B (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210104635.7A Active CN103362470B (en) | 2012-04-11 | 2012-04-11 | Oil/gas Well annular mechanical packing packer |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141469B (en) * | 2014-07-25 | 2016-06-29 | 中国石油化工股份有限公司 | Coiled tubing drags separate stratum fracturing packer |
| CN108590617A (en) * | 2018-06-05 | 2018-09-28 | 杰瑞能源服务有限公司 | Separate stratum fracfturing tool and its construction technology |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4953617A (en) * | 1989-10-19 | 1990-09-04 | Baker Hughes Incorporated | Apparatus for setting and retrieving a bridge plug from a subterranean well |
| CN2111360U (en) * | 1991-12-19 | 1992-07-29 | 辽河石油勘探局钻采工艺研究院 | High-pressure self-sealing pressing crack segregating unit |
| CN2559781Y (en) * | 2002-07-18 | 2003-07-09 | 阜新市石油工具厂 | Balance pressure packer |
| CN201280910Y (en) * | 2008-09-03 | 2009-07-29 | 季会军 | Anti-clipping fracturing packer |
| CN202181874U (en) * | 2011-08-05 | 2012-04-04 | 中国石化江汉油田分公司井下作业处 | Packer for oil well production |
| CN102400661A (en) * | 2011-11-25 | 2012-04-04 | 中国石油天然气股份有限公司 | Balance valve for continuous oil pipe multi-layer fracturing operation |
-
2012
- 2012-04-11 CN CN201210104635.7A patent/CN103362470B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4953617A (en) * | 1989-10-19 | 1990-09-04 | Baker Hughes Incorporated | Apparatus for setting and retrieving a bridge plug from a subterranean well |
| CN2111360U (en) * | 1991-12-19 | 1992-07-29 | 辽河石油勘探局钻采工艺研究院 | High-pressure self-sealing pressing crack segregating unit |
| CN2559781Y (en) * | 2002-07-18 | 2003-07-09 | 阜新市石油工具厂 | Balance pressure packer |
| CN201280910Y (en) * | 2008-09-03 | 2009-07-29 | 季会军 | Anti-clipping fracturing packer |
| CN202181874U (en) * | 2011-08-05 | 2012-04-04 | 中国石化江汉油田分公司井下作业处 | Packer for oil well production |
| CN102400661A (en) * | 2011-11-25 | 2012-04-04 | 中国石油天然气股份有限公司 | Balance valve for continuous oil pipe multi-layer fracturing operation |
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| CN103362470A (en) | 2013-10-23 |
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Effective date of registration: 20200911 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Co-patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: 610051, Sichuan Province, Chenghua District, Chengdu two ring road, paragraph 6, four North Ruifeng Lane Patentee before: DOWNHOLE OPERATION COMPANY, CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. |
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