CN201152163Y - Sieve tube semi-cementing well stage collar - Google Patents
Sieve tube semi-cementing well stage collar Download PDFInfo
- Publication number
- CN201152163Y CN201152163Y CNU2008201034630U CN200820103463U CN201152163Y CN 201152163 Y CN201152163 Y CN 201152163Y CN U2008201034630 U CNU2008201034630 U CN U2008201034630U CN 200820103463 U CN200820103463 U CN 200820103463U CN 201152163 Y CN201152163 Y CN 201152163Y
- Authority
- CN
- China
- Prior art keywords
- sleeve
- middle sliding
- inner sleeve
- outer sleeve
- sliding sleeve
- 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 - Fee Related
Links
- 230000006835 compression Effects 0.000 claims abstract description 13
- 238000007906 compression Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 238000004513 sizing Methods 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 230000006837 decompression Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 238000005553 drilling Methods 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 206010024453 Ligament sprain Diseases 0.000 description 1
- 208000010040 Sprains and Strains Diseases 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
Images
Landscapes
- Lift Valve (AREA)
Abstract
The utility model discloses a sieve tube half-cementing stage collar which consists of a one-way circulator, a decompression ball seat and a stamping packer which are connected with each other. An inner sleeve is arranged between the upper contact and lower contact on the one-way circulator; an outer sleeve is separately sleeved on the inner sleeve; a by-pass valve opening is arranged on the lower part of the outer sleeve; a compression spring is sleeved on the inner sleeve; a middle sliding bush is cooperated with and sleeved on the inner sleeve on the lower part of the compression spring; the middle sliding bush, the inner and outer contacts are combined in a slipper seal way; an inner liquid taphole is arranged on the wall of the inner sleeve on the lower end of the middle sliding bush; a solution stocker is arranged on the lower end of the middle sliding bush; the solution stocker is communicated with the liquid taphole; the upper part of the middle sliding bush is fixedly connected with the outer sleeve through a shear pin; the by-pass valve opening is sealed by the middle sliding bush; the upper and lower ends of the outer sleeve are respectively fixedly connected with the upper and lower contacts through the shear pin. The stage collar can improve the quality of wells and be easily used.
Description
Technical field
The utility model relates to the cementing equipment of petroleum industry, particularly a kind of screen casing sizing collar of partly cementing the well.
Background technology
In the completion practice of petroleum drilling engineering, need carry out the cementing well operation to the well bore of finishing drilling, with closed sandwich, allow the crude oil in the oil reservoir flow into down-hole oil production equipment.And sizing collar is the important tool in the cementing well operation, is a kind of can open and closable special box cupling, makes the cementing job of a bite well be divided into secondary or three grades and finishes.That publishes in petroleum industry publishing house June nineteen ninety " discloses a kind of sizing collar in the 535th page of the drilling well handbook first volume one book chapter 4 the 7th joint " cementing technology " literary composition, this instrument adopts plug to open and close, this sizing collar is strict to the manufacturing of plug, during The field, often cause sizing collar in advance or sluggishness close influence well cementation effect.
The utility model content
The purpose of this utility model is to provide a kind of screen casing sizing collar of partly cementing the well, and it is simple in structure, is easy to make, and switch is flexible, can effectively improve cementing quality, and is easy to use.
The purpose of this utility model is achieved in that a kind of screen casing sizing collar of partly cementing the well, it is by unidirectional circulator, pressure release ball seat and suppress packer and be interconnected to constitute, on the unidirectional circulator, between the lower contact by the inner sleeve that is being threaded, the outer spacer sleeve of inner sleeve is being adorned outer sleeve, the outer sleeve bottom is being provided with the bypass valve opening, suit the compression spring on the inner sleeve, cooperate suit middle sliding sleeve on the inner sleeve of compression spring bottom, all being slipper seal between middle sliding sleeve and inner sleeve and the outer sleeve cooperates, fluid hole in being provided with on the inner sleeve wall of middle sliding sleeve lower end, middle sliding sleeve lower end is being provided with liquid storage cylinder, liquid storage cylinder is connected with interior fluid hole, be fixed together by shear pin between middle sliding sleeve top and the outer sleeve, the bypass valve opening is sealed by middle sliding sleeve, on the outer sleeve, following two ends are set in, in the lower contact and by fixing pin and last, lower contact is fixed together.
When the utility model uses, in tubing string, suppress, under the pressure effect of spraining of suppressing packer and pressure release ball seat, fluid under pressure in the sizing collar enters liquid storage cylinder by interior fluid hole and upwards promotes middle sliding sleeve, middle sliding sleeve is cut off shear pin and is promoted the compression spring and makes its compression, is connected with bypass valve opening on the outer sleeve up to interior fluid hole; When the liquid in the sizing collar reduced pressure, the centre slided under the effect of compressing spring and moves downward the bypass valve bore closure.Can effectively control the circulation of cement paste when the utility model makes well cementation, switch is flexible, thereby improves cementing quality, prevents the unsettled situation of cementing quality, and it is simple in structure, is easy to make, and is easy to use.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Accompanying drawing is that master of the present utility model looks the semi-section structural representation.
The specific embodiment
A kind of screen casing sizing collar of partly cementing the well, as shown in drawings, it is by unidirectional circulator, pressure release ball seat 8 and suppress packer 9 and be interconnected to constitute.Wherein unidirectional circulator the time plays the effect of cement paste cycling switch in well cementation, suppresses packer 9 in order to expand tube sealing external packer and open unidirectional circulator, and pressure release ball seat 8 is pressed and pressure release in order to sprain.
By the inner sleeve that is being threaded, the outer spacer sleeve of inner sleeve is being adorned outer sleeve 2 between the upper and lower joint of unidirectional circulator, and outer sleeve 2 bottoms are being provided with bypass valve opening 6.Suit compression spring 3 on the inner sleeve, cooperate on the inner sleeve of compression spring 3 bottoms suit in the middle of sliding sleeve 5, all be slipper seal between middle sliding sleeve 5 and inner sleeve and the outer sleeve and cooperate.Fluid hole 7 in being provided with on the inner sleeve wall of middle sliding sleeve 5 lower ends, middle sliding sleeve 5 lower ends are being provided with liquid storage cylinder, liquid storage cylinder is connected with interior fluid hole 7, be fixed together by shear pin 4 between middle sliding sleeve 5 tops and the outer sleeve 2, bypass valve opening 6 is by middle sliding sleeve 5 sealings, and the upper/lower terminal of outer sleeve 2 is set on the upper and lower joint and by fixing pin 1 and upper and lower joint and is fixed together.
When suppressing, liquid by interior fluid hole 7 enter liquid storage cylinder upwards promote in the middle of sliding sleeve 5, middle sliding sleeve is cut off shear pin 4 and is promoted compression spring 3 and makes its compression, is connected with bypass valve opening 6 on the outer sleeve up to interior fluid hole 7; During decompression, middle sliding sleeve 5 moves downward under the effect of compression spring 3 bypass valve opening 6 is closed.
Claims (1)
1, a kind of screen casing sizing collar of partly cementing the well, it is by unidirectional circulator, pressure release ball seat (8) and suppress packer (9) and be interconnected to constitute, it is characterized in that: on the unidirectional circulator, between the lower contact by the inner sleeve that is being threaded, the outer spacer sleeve of inner sleeve is being adorned outer sleeve (2), outer sleeve (2) bottom is being provided with bypass valve opening (6), suit compression spring (3) on the inner sleeve, cooperate suit middle sliding sleeve (5) on the inner sleeve of compression spring (3) bottom, all being slipper seal between middle sliding sleeve (5) and inner sleeve and the outer sleeve cooperates, fluid hole (7) in being provided with on the inner sleeve wall of middle sliding sleeve (5) lower end, middle sliding sleeve (5) lower end is being provided with liquid storage cylinder, liquid storage cylinder is connected with interior fluid hole (7), be fixed together by shear pin (4) between middle sliding sleeve (5) top and the outer sleeve (2), bypass valve opening (6) is by middle sliding sleeve (5) sealing, on the outer sleeve (2), following two ends are set in, in the lower contact and by fixing pin (1) and last, lower contact is fixed together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201034630U CN201152163Y (en) | 2008-02-04 | 2008-02-04 | Sieve tube semi-cementing well stage collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201034630U CN201152163Y (en) | 2008-02-04 | 2008-02-04 | Sieve tube semi-cementing well stage collar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201152163Y true CN201152163Y (en) | 2008-11-19 |
Family
ID=40127842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201034630U Expired - Fee Related CN201152163Y (en) | 2008-02-04 | 2008-02-04 | Sieve tube semi-cementing well stage collar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201152163Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575509A (en) * | 2009-08-13 | 2012-07-11 | 贝克休斯公司 | Tubular valving system and method |
| CN103032050A (en) * | 2012-12-14 | 2013-04-10 | 湖北双环科技股份有限公司 | Unstable formation treatment technique for rock salt well construction |
| CN103429843A (en) * | 2011-03-11 | 2013-12-04 | 哈利伯顿能源服务公司 | Flow control screen assembly having remotely disabled reverse flow control capability |
-
2008
- 2008-02-04 CN CNU2008201034630U patent/CN201152163Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575509A (en) * | 2009-08-13 | 2012-07-11 | 贝克休斯公司 | Tubular valving system and method |
| CN103429843A (en) * | 2011-03-11 | 2013-12-04 | 哈利伯顿能源服务公司 | Flow control screen assembly having remotely disabled reverse flow control capability |
| CN103032050A (en) * | 2012-12-14 | 2013-04-10 | 湖北双环科技股份有限公司 | Unstable formation treatment technique for rock salt well construction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202157782U (en) | Improved sieve tube grading hoop for semi-cementing well | |
| CN206035441U (en) | Hydraulic pressure deblocking water injection packer | |
| CN201152163Y (en) | Sieve tube semi-cementing well stage collar | |
| CN201080804Y (en) | Multifunctional wellhead pressure test packer | |
| CN203050662U (en) | Hydraulic sliding sleeve switch | |
| CN204457580U (en) | Composite packer | |
| CN203948068U (en) | Large pressure difference washable compressive packer for oil well | |
| CN201843563U (en) | Mechanical downhole inner and outer integrated blowout preventer | |
| CN201068781Y (en) | Down-hole fixed pressure opening valve for injection, extraction and washing | |
| CN201884002U (en) | Drilling downhole check valve | |
| CN105317394A (en) | High-temperature-resistant and high-pressure-bearing packer special for oil drilling | |
| CN204024591U (en) | Horizontal well casing pressure is opened reverse circulation valve | |
| CN203285385U (en) | Hydraulic control packer | |
| CN201050329Y (en) | Well mouth pressure testing packer | |
| CN201050332Y (en) | Cement injection switch device for drillable segmental cementing | |
| CN201225128Y (en) | Novel internal blowout prevention tool | |
| CN203614074U (en) | Water injection packer capable of being unpacked step by step and achieving well backwashing | |
| CN201687409U (en) | Recyclable self-grouting blind plate joint | |
| CN204060660U (en) | A kind of static pressure pressure reduction sliding sleeve | |
| CN2625571Y (en) | Impacting seat for well cementing | |
| CN203008846U (en) | Self-expanding type oil and gas well wall plugging and strengthening pipe nipple and sending and releasing device thereof | |
| CN204283318U (en) | High temperature high voltage resistant tubing packer | |
| CN2784580Y (en) | Hydraulic locking packer | |
| CN202531094U (en) | compression packer | |
| CN202810774U (en) | Bidirectional self-locking outer packer of casing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081119 Termination date: 20100204 |