CN2725516Y - Offset-hole check valve - Google Patents
Offset-hole check valve Download PDFInfo
- Publication number
- CN2725516Y CN2725516Y CN 200420067114 CN200420067114U CN2725516Y CN 2725516 Y CN2725516 Y CN 2725516Y CN 200420067114 CN200420067114 CN 200420067114 CN 200420067114 U CN200420067114 U CN 200420067114U CN 2725516 Y CN2725516 Y CN 2725516Y
- Authority
- CN
- China
- Prior art keywords
- ball
- main body
- ball seat
- oil
- seat
- 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
Links
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000011010 flushing procedure Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 238000004891 communication Methods 0.000 abstract 1
- 238000005065 mining Methods 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 19
- 239000003129 oil well Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000010779 crude oil Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model relates to an oil field machinery oil recovery is instrument in the pit, especially a biased bore single current valve with uniflow characteristic. The ball valve mainly comprises an upper joint, a ball valve, a sealing ring, a ball seat, a pin, a main body and the like. One end of the upper joint is externally connected with the main body, three evenly distributed eccentric holes are formed in the main body, one eccentric hole is used for liquid of a lower mining layer to pass through, and ball seats are arranged in the other two eccentric holes. The ball seat is provided with a ball valve. The ball seat is connected with the main body through a pin, and a sealing ring is adopted to seal the contact surface of the ball seat and the main body. The eccentric holes of the built-in ball seats are respectively provided with axial grooves which correspond to the axial grooves of the ball seats. By adopting the utility model, the oil jacket communication of the water plugging pipe column in the well descending process can be realized, and the midway setting of the packer can be avoided; the snubbing serving device can realize snubbing operation and prevent the pollution of flushing operation on an oil layer; the opening is flexible.
Description
One, technical field
The utility model relates to a kind of oil field machinery oil downhole tool, particularly a kind of inclined to one side hole ball-and-seat with way flow characteristic.
Two, background technology
In oil well multilayer separate zone production water plugging string, oil reservoir crude oil enters oil pipe by communicating valve usually, gives rise to ground by oil well pump then.In actual applications, adopt communicating valve to come with some shortcomings:
The one, water plugging string is in the process of going into the well, the fuse of communicating valve links to each other with main body by pin, each twice up and down " O " RunddichtringO of fuse seals the oil jacket intercommunicating pore, oil jacket is not communicated with, communicating valve is in closed condition, easily cause some packer mistake to set, damage seal, directly influence the plugging effect of packer.
The 2nd, behind design attitude, suppress under the water plugging string from oil pipe, multistage Packer for blocking water is set, continue to suppress, the pin of communicating valve is cut off, and fuse is descending, gets out of the way the oil jacket intercommunicating pore, and communicating valve is in open mode, and oil reservoir crude oil enters oil pipe by communicating valve.Owing to multiple reason, sometimes need oil well is carried out operation, as the water plugging string of giving up needs the pump detection and workover well-flushing midway, need carry out dosing heat for paraffin-troubled well washes, because can't close after communicating valve is opened, when oil well was carried out operation, flushing fluid can directly enter and adopt layer, cause pollution, reduce the production capacity of oil well oil reservoir.
The 3rd, owing to opening by pin control of communicating valve, and pin is subjected to material and heat treated the influence, and the scene is difficult to control, and communicating valve is opened easily in advance, causes packer to set.
Three, summary of the invention
The purpose of this utility model is to overcome above-mentioned technical deficiency, provides a kind of unlatching flexible, prevents the inclined to one side hole ball-and-seat of oil layer pollution during well-flushing.
Realize that the technical scheme that the utility model purpose is adopted is: mainly form by top connection, ball valve, sealing ring, ball seat, pin, main body etc.Top connection one end is external in main body, and three uniform inclined to one side holes are arranged in the main body, and one of them inclined to one side hole is used for the bottom adopts the liquid of layer and pass through, and in addition two inclined to one side holes are built-in with ball seat.Ball valve is arranged on the ball seat.Ball seat by and main body between be provided with sealing ring.The inclined to one side hole of built-in ball seat has axial groove, and corresponding with the axial groove of ball seat.
Adopt the technical solution of the utility model to have following beneficial effect:
1, guarantee that water plugging string oil jacket in the process of going into the well is communicated with, and avoids packer to set midway:
2, can realize snubbing serving, prevent the pollution of clean-out service oil reservoir;
3, open flexibly.
Four, description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A-A sectional drawing of Fig. 1.
The schematic diagram that Fig. 3 uses in water plugging string for the utility model.
Five, specific embodiment
See figures.1.and.2, top connection 1 one ends are external in main body 6, are provided with sealing ring therebetween in case adopt a layer liquid outflow.Three uniform inclined to one side hole a, b and c are arranged in the main body 6, and hole a and b have axial groove and are built-in with and also be with axial groove and corresponding with it ball seat 4 partially.Ball seat 4 is connected with main body 6 by pin 5, and employing sealing ring 3 sealed ball seats 4 and main body 6 contact surfaces, makes to adopt layer liquid and can only pass through from inclined to one side hole c, and ball valve 2 places ball seat 4 upper surfaces.
With reference to Fig. 1 and Fig. 3, in the water plugging string of multilayer separate zone production, the utility model 7 links to each other with 9 with packer 8 respectively up and down, and the tubing string bottom connects a bottom ball 10.The utility model 7 is lowered in the oil reservoir of design exploitation.The ball valve 2 that is seated in the process of going into the well on the ball seat 4 is in open mode, and liquid flows in the oil pipe, and oil jacket pressure keeps balance, avoids the packer process of going into the well to set midway.Behind design attitude, beat hydraulic pressure in oil pipe under the water plugging string, tubing pressure is greater than casing pressure, and ball valve 2 is seated at ball seat 4, and the utility model 7 is in closed condition, at this moment packer setting.When oil well pump 11 during in upstroke, casing pressure is greater than tubing pressure, and ball valve 2 leaves ball seat 4, and the axial groove of the liquid that the utility model 7 correspondences are adopted layer by main body 6 and ball seat 4 enters ball seat 4 and open ball valve 2, and crude oil enters in the oil well pump 11 by oil pipe.Simultaneously, the crude oil of layer is adopted by in the inclined to one side hole c inflow oil well pump 11 in the bottom.As seen, in the water plugging string of multiple-zone production, a plurality of liquid of adopting layer pass through the utility model 7 respectively along different paths, after oil well pump 11 gives rise to ground.In process of production, if desired oil well is carried out operation, as the water plugging string of giving up needs the pump detection and workover well-flushing midway, during for operations such as paraffin-troubled well need carry out that dosing heat is washed, under the well-flushing action of hydraulic force, ball valve 2 is seated in ball seat 4, and the utility model is in time closed, flushing fluid can not enter to be adopted layer and pollutes, thereby realizes snubbing serving.
Claims (2)
1, a kind of inclined to one side hole ball-and-seat, mainly form by top connection (1), ball valve (2), sealing ring (3), ball seat (4), pin (5), main body (6) etc., top connection (1) one end is external in main body (6), it is characterized in that: three uniform inclined to one side holes are arranged in the main body (6), one of them inclined to one side hole be used for the bottom adopt the layer liquid pass through, two inclined to one side holes are built-in with ball seat (4) in addition, and ball valve (2) is arranged on the ball seat (4), are provided with sealing ring (3) between ball seat (4) and main body (6).
2, inclined to one side hole according to claim 1 ball-and-seat, it is characterized in that: the inclined to one side hole of built-in ball seat (4) has axial groove, and corresponding with the axial groove of ball seat (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420067114 CN2725516Y (en) | 2004-06-15 | 2004-06-15 | Offset-hole check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420067114 CN2725516Y (en) | 2004-06-15 | 2004-06-15 | Offset-hole check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2725516Y true CN2725516Y (en) | 2005-09-14 |
Family
ID=35040236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420067114 Expired - Lifetime CN2725516Y (en) | 2004-06-15 | 2004-06-15 | Offset-hole check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2725516Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260791B (en) * | 2007-03-08 | 2011-01-26 | 中国石油化工股份有限公司 | Raising-out type ball seat |
| CN101748990B (en) * | 2009-12-11 | 2012-09-19 | 东营百华石油技术开发有限公司 | Releasing packer well-washing device |
-
2004
- 2004-06-15 CN CN 200420067114 patent/CN2725516Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260791B (en) * | 2007-03-08 | 2011-01-26 | 中国石油化工股份有限公司 | Raising-out type ball seat |
| CN101748990B (en) * | 2009-12-11 | 2012-09-19 | 东营百华石油技术开发有限公司 | Releasing packer well-washing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7857061B2 (en) | Flow control in a well bore | |
| US6026904A (en) | Method and apparatus for commingling and producing fluids from multiple production reservoirs | |
| CN103184859A (en) | Device and method for exploitation for single-well injection-production | |
| CN1294337C (en) | Layered pipe column for squeeze packing sand control process | |
| CN117248857A (en) | Method for dewatering and increasing oil by filling packing body particles in oil and gas well of fractured oil and gas reservoir | |
| CN201810286U (en) | Selective mining mixed pumping tubular column applicable to two-layer mining | |
| CN103291271B (en) | A kind of can the fracturing sliding bush of multiple switching | |
| CN108625830A (en) | Ball-throwing type selective sand control process pipe string and its method | |
| NO20120235A1 (en) | Flow rate dependent flow control device | |
| CN101144375A (en) | Horizontal well continuous sand flushing device | |
| CN201087714Y (en) | Double-oil tube well mouth device | |
| CN106481321A (en) | There is open-hole horizontal well gravel pack tools and the technique of big section mudstone barriers | |
| CN201358754Y (en) | Horizontal well hydraulic layer-change switch | |
| CN2725516Y (en) | Offset-hole check valve | |
| CN211819260U (en) | Sand washing process pipe column for sand-buried production oil layer of oil-water well of thickened oil block | |
| CN112177575B (en) | Sand mould-proof hydraulic layer-changing exploitation pipe column and use method thereof | |
| CN104019030B (en) | A kind of reacting cycle liquid drives the discharge device of oil pumping screw pump | |
| CN202417410U (en) | Well washing packer | |
| CN113914824B (en) | Underground follow-up sealing production increasing pipe column capable of flushing well and efficient lifting method | |
| CN103696749A (en) | Closable fracture sliding sleeve | |
| CN205089285U (en) | Prevent flowing backward control valve and layering and prevent flowing backward combination tubular column with adopting | |
| CN204703867U (en) | A kind of unidirectional liquid stream sand block conversion equipment | |
| CN104695914A (en) | Sand control string for sectional high-pressure packing in pipe of horizontal well | |
| CN210598927U (en) | Special downhole hydraulic motor for oil production | |
| CN109779547B (en) | Downhole liquid flow reversing tool |
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: 20140615 Granted publication date: 20050914 |