CN2530026Y - Packer for blocking water - Google Patents
Packer for blocking water Download PDFInfo
- Publication number
- CN2530026Y CN2530026Y CN 02202258 CN02202258U CN2530026Y CN 2530026 Y CN2530026 Y CN 2530026Y CN 02202258 CN02202258 CN 02202258 CN 02202258 U CN02202258 U CN 02202258U CN 2530026 Y CN2530026 Y CN 2530026Y
- Authority
- CN
- China
- Prior art keywords
- packer
- water
- packing element
- oil
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a water shut-off packer for oil layer sealing in an oil field, comprising expanding and compressible composite seal rubber packers (3,6,8 and 10), an annular chamber (27), which is composed of a central tube (26) and a liner (5) and an piston (19) in the annular chamber. An upper part of the piston is of a slender diameter and the piston (19) is limited for preventing breaking of the expanding rubber packer due to the super high pressure difference. The utility model has the advantages of high pressure resistance, good sealing performance and long service life and solves the technical problems of low pressure resistance of the water shut-off the prior packer. An oil sleeve pipe annular space can be sealed by using the water shut-off packer, a water shot-off layer (30) and an oil pay (29) are separated for sealing off the water shot-off layer. The success ratio of water shot-off is promoted, the expiration date of water shot-off is prolonged and the cost is reduced.
Description
(1) technical field:
The utility model relates to the Packer for blocking water that a kind of oil field oil-separating layer is used.
(2) background technology:
In the exploitation of terrestrial facies multiple zone sandstone oil field, waterflooding extraction is ripe and good method success, but in the process of waterflooding extraction, particularly in the middle and later periods of oil field development, interlayer contradiction becomes increasingly conspicuous, former rerum natura is good, the oil reservoir that water absorbing capacity is strong becomes high pressure, high watercut layer, the performance of compacting low pressure, low moisture sand capacity, therefore, blocking high-pressure, high aquifer are carried out oilwell water shutoff and have been become an important production measure guaranteeing oilfield stable production at present and improve recovery ratio.Along with the increase of Oilfield Water Injection Rate, interlayer pressure difference increases, and the compression packer that use in former oil field is difficult to bear, inflatable packer, and packing element easily rises brokenly, and the packer sealing packing element is short application life, causes the water blockoff success rate to reduce gradually thus, and period of validity shortens.Though twin-stage packer water blockoff is used in the oil field that has, because the oil field long-term injecting water causes a large amount of casing bucklings distortion, twin-stage packer water plugging string is not often gone down or carry to come out, and use twin-stage packer water blockoff cost height.
(3) utility model content:
Technical problem to be solved in the utility model is the deficiency at prior art, and a kind of Packer for blocking water is provided, and have compression and inflatable packer compound seal packing element, improved packer sealing, have high voltage bearing characteristics, solved the withstand voltage low technical problem of existing packer.
The technical scheme that its technical problem that solves the utility model adopts is: the packer sealing packing element has expanding packing element and compression packing element; There is the water hole lining upper and lower part, and lining outer wall boss upper and lower part is respectively expanding packing element and compression packing element, and central tube top and lining constitute an annular chamber, and piston is housed in the annular chamber, and lower part of piston is equipped with sealing ring, and piston top is thin footpath; Sliding sleeve is positioned at compression packing element bottom, and the water hole is arranged at top.
The utility model beneficial effect that produces of comparing with background technology is: but with the oil casing annular space between this Packer for blocking water packing water-blocking layer and the oil-producing formation, packing high pressure water-blocking layer.It has compression and expansion composite seal, high pressure resistant, good airproof performance, and piston is spacing, can prevent the rise broken characteristics of expanding packing element of superhigh pressure difference, adopts artificial pressurization release compression packing element, and interlayer pressure difference is opened the compound working method of expanding packing element.Simple in structure, safe in utilization, the packer life-span is long, can improve the water blockoff success rate, prolongs the water blockoff period of validity, and can reduce the water blockoff cost.
(4) description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the working state structure schematic diagram of Fig. 1;
Fig. 3 is that Fig. 1 is applied to the schematic diagram on the flow string.
(5) specific embodiment:
Below in conjunction with drawings and Examples will the utility model is described in further detail.
The packer sealing packing element has expanding packing element 3 and compression packing element (6,8,10); There is water hole (17 lining 5 upper and lower parts, 20), lining 5 outer wall boss upper and lower parts are respectively expanding packing element 3 and compression packing element (6,8,10), central tube 26 tops and lining 5 constitute an annular chamber 27, and piston 19 is housed in the annular chamber, sealing ring 18 is equipped with in the bottom of piston 19, and piston 19 tops are thin footpath; Sliding sleeve 13 is positioned at compression packing element 10 bottoms, and water hole 11 is arranged at top.
As shown in Figure 1, the upper and lower joint (1 of Packer for blocking water, 16) with central tube 26 screwed connections, central tube has water hole 22 26 times, and central tube 26 tops are with piston 19, lining 5 and expanding packing element 3, the expanding packing element 3 upper and lower lock rings (2 that are connected with, 4) middle part is with compression packing element (6,8,10), spacer ring (7,9) is arranged in the middle of the packing element; Hydraulic-driven and fastening devices are equipped with in the bottom, are made up of sliding sleeve 13, jump ring 14, slips 15, pin 24, clip spring seat 25, sealing ring (12,21,23).
This Packer for blocking water adopts single piston waterpower compression and the spacing hydraulic expansion formula of piston composite construction.Adopt artificial pressurization to discharge the compression packing element, interlayer pressure difference is opened the compound working method of expanding packing element.During The field, assemble packer, in the annular chamber 27 that central tube and lining constituted, fill it up with hydraulic oil simultaneously.Assemble water plugging string and G.I.H projected depth by the plug water construction design scheme, to the OIH pipe, add hydraulic pressure with the pressure work car from well head, pressure reaches bottom ball seat 28 downwards along oil pipe from well head, because the bottom ball seat can stop pressure to leak, therefore, the pressure in the oil pipe constantly rises, simultaneously pressure enters the annular chamber that sliding sleeve 5 and central tube 26 constitute at the packer place by water hole 22, make sliding sleeve 5 produce the power of a compression packing element (10,8,6).Shown in Fig. 2,3, along with the oil pipe internal pressure constantly rises, this compressive force constantly increases, when having overcome compression packing element (10,8,6) behind the elasticity tension, compression packing element (10,8,6) vertically compressed and produced lateral expansion, along with compression apart from increasing, slips 15 arrives the position of jump rings 14 and locked, make compression packing element (10,8,6) keep compressive state, Packer for blocking water 31 packing oil casing annular spaces, water-blocking layer 30 and oil-producing formation 29 packings are opened, realized the function of stage compression type sealing just.
Shown in Fig. 2,3, after realizing stage compression type sealing just, well head stops pressurization, the flow string 32 on water plugging string and top is given up separates, on carry flow string 32 to projected depth, just carry out the production of can recovering the oil after completion is constructed.Recovering the oil when producing, because of the pressure of water-blocking layer 30 is higher than the pressure of oil-producing formation 29, and interlayer is because primary seal and not being communicated with, then in oil casing annular space, the pressure reduction of generation up and down of compression packing element, direction is pointed to oil-producing formation.This moment since compression packing element (10,8,6) be compressed, water hole 20 expose and with sliding sleeve 13 on water hole 11 relative connections.Therefore, hydraulic pressure enters lining 5 through water hole 11 and 20 and moves with annular chamber 27 and driven plunger 19 that central tube 26 constitutes, piston 19 orders about the interior hydraulic oil of annular chamber enters expanding packing element 3 through water hole 17 inner chamber, and make 3 expansions of expanding packing element and the packing oil casing annular space, realize the function of expanding sealing.The thin footpath of piston 19 has spacing effect, can prevent that expanding packing element 3 from being risen brokenly because of the pressure reduction of superelevation.
When the packer deblocking, can will carry on the water plugging string.At this moment, packing element (3,6,8,10) and the friction between the sleeve pipe make sliding sleeve 13 be subjected to a downward active force, this power is cut off pin 24, so clip spring seat 25 is descending with sliding sleeve 13, compression packing element (10,8,6) and expanding packing element 3 elastic recovery thereupon, thus realize the whole deblocking of packer and propose well head.
Claims (1)
1, the oil-separating layer Packer for blocking water used in a kind of oil field comprises packer sealing packing element, central tube (26), lining (5), sliding sleeve (13), and it is characterized in that: the packer sealing packing element has expanding packing element (3) and compression packing element (6,8,10); There is water hole (17,20) lining (5) upper and lower part, lining (5) outer wall boss upper and lower part is respectively expanding packing element (3) and compression packing element (6,8,10), central tube (26) top and lining (5) constitute an annular chamber (27), piston (19) is housed in the annular chamber, sealing ring (18) is equipped with in the bottom of piston (19), and piston (19) top is thin footpath; Sliding sleeve (13) is positioned at compression packing element (10) bottom, and water hole (11) is arranged at top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02202258 CN2530026Y (en) | 2002-01-11 | 2002-01-11 | Packer for blocking water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02202258 CN2530026Y (en) | 2002-01-11 | 2002-01-11 | Packer for blocking water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2530026Y true CN2530026Y (en) | 2003-01-08 |
Family
ID=33684865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02202258 Expired - Lifetime CN2530026Y (en) | 2002-01-11 | 2002-01-11 | Packer for blocking water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2530026Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515343A (en) * | 2011-12-29 | 2012-06-27 | 北京市环境保护科学研究院 | Expandable air barrier device and method of using same for injection remediation of underground water pollution |
| CN102650202A (en) * | 2012-05-04 | 2012-08-29 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Expansion compression type packer |
| CN111456677A (en) * | 2020-04-01 | 2020-07-28 | 刘超 | Hydraulic mechanical packer |
-
2002
- 2002-01-11 CN CN 02202258 patent/CN2530026Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515343A (en) * | 2011-12-29 | 2012-06-27 | 北京市环境保护科学研究院 | Expandable air barrier device and method of using same for injection remediation of underground water pollution |
| CN102515343B (en) * | 2011-12-29 | 2013-06-12 | 北京市环境保护科学研究院 | Expandable air barrier device and method of using same for injection remediation of underground water pollution |
| CN102650202A (en) * | 2012-05-04 | 2012-08-29 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Expansion compression type packer |
| CN102650202B (en) * | 2012-05-04 | 2015-04-08 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Expansion compression type packer |
| CN111456677A (en) * | 2020-04-01 | 2020-07-28 | 刘超 | Hydraulic mechanical packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120111 Granted publication date: 20030108 |