CN203230386U - Outer sliding sleeve type oil drain device - Google Patents
Outer sliding sleeve type oil drain device Download PDFInfo
- Publication number
- CN203230386U CN203230386U CN 201320146546 CN201320146546U CN203230386U CN 203230386 U CN203230386 U CN 203230386U CN 201320146546 CN201320146546 CN 201320146546 CN 201320146546 U CN201320146546 U CN 201320146546U CN 203230386 U CN203230386 U CN 203230386U
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- CN
- China
- Prior art keywords
- sliding sleeve
- central tube
- outer sliding
- packing
- oil drain
- 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
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Abstract
The utility model relates to an outer sliding sleeve type oil drain device. The outer sliding sleeve type oil drain device is formed by a lower joint (1), a protective cover (2), a central tube (3), lower packing (4), an outside sliding sleeve (5), upper packing (6), a pin (7) and an upper joint (8); the lower joint (1), the central tube (3) and the upper joint (8) are sequentially connected in a threaded mode; a plurality of hydraulic transmission through holes are uniformly distributed in the central tube (3); a plurality of oil drain through holes are uniformly distributed in a protruding diameter expanding body of the central tube (3); the outside sliding sleeve (5) sleeves the central tube (3) and covers the hydraulic transmission through holes and the oil drain through holes; the pin (7) enables the outside sliding sleeve (5) and the central tube (3) to be fixed; the upper end of the lower joint (1) is in threaded connection with the protective cover (2); a plurality of long seams are uniformly distributed in the middle of the protective cover (2); the upper packing (6) and the lower packing (4) are placed at the upper end and the lower end which are located between the outside sliding sleeve (5) and the central tube (3) respectively. The outer sliding sleeve type oil drain device is used for solving the problem that opening and drainage of lifting process tubular columns of highly-deviated wells and horizontal wells are difficult.
Description
Technical field
The utility model relates to a kind of outer sliding sleeve down-hole draining instrument, is applicable to the centrifugal electric pump of latent oil and the reciprocal electric pump in oil field development high angle hole, the horizontal well and takes out the conventional pumps lifting deeply.
Background technology
Along with the oil field is constantly developed, the incompatible needs of producing of existing down-hole bleeder are found in the continuous increase of big gradient and horizontal well quantity.As conventional sliding sleeve let out, hammer is let out, the ADV valve all exist do not open and beat let out the difficulty problem, not only the oil supply well operations makes troubles, and has also increased operating cost, causes severe contamination to the well site.
At present, the bleeder kind of high angle hole and horizontal well use has ADV valve, conventional sliding sleeve, bump (hammer is let out) mainly to have following problem:
1, ADV valve: the ADV valve is the technology from external introduction, and domestic offshore field is used more.But because its internal valve adds mechanical seal by spring, so in case spring failure or elastic force inadequately, sand and foreign material are stuck in mechanical seal place just can not draining because not opening.
2, conventional sliding sleeve is let out: need move up and down to sliding sleeve from the next special tool by steel wire or pump rod connection of well head when opening because of conventional sliding sleeve, can also realize in less than 40 degree wells, but just be difficult to realization on big gradient and horizontal well.Because the reason of wax and big gradient and level is arranged on the tubing wall, instrument is difficult to arrive the sliding sleeve position, so draining is not opened, oily intraluminal fluid can't release.Also having a problem is can not descend any instrument in the oil pipe, and the passage by special tool namely will be arranged in the oil pipe.
3, bump is let out (hammer is let out): bump (hammer) is as the term suggests to let out be to lean against well head to put into the steel rod bump (hammer) with constant weight in the oil pipe and break draining, since will have certain vertical distance to lean on the gravity acceleration could form certain strength by pounding.And on big gradient and horizontal well, just can't realize that reason is that steel rod can not form acceleration at oil pipe, and can not form without acceleration and can clash into the strength that (pounding) opens bleeder, so draining is not opened, oily intraluminal fluid can't release.
The utility model content
At the defective that above-mentioned prior art exists, the technical problems to be solved in the utility model provides a kind of outer sliding sleeve bleeder, and the existing high angle hole of solution, horizontal well lifting technology tubing string are beaten and let out difficulty, realizes the interior draining smoothly of well.
For solving the problems of the technologies described above; the utility model outer sliding sleeve bleeder is by lower contact 1; protective cover 2; central tube 3; following packing 4; outer sliding sleeve 5; last packing 6; pin 7 and top connection 8 are formed; wherein; above-mentioned top connection 1; central tube 3 and top connection 8 are threaded successively; above-mentioned central tube 3 one ends are protruding hole enlargement body; uniform two above hydraulic pressure transfer through holes on the above-mentioned central tube 3; uniform two above draining through holes on the above-mentioned central tube 3 protruding hole enlargement bodies; above-mentioned outer sliding sleeve 5 is enclosed within on the central tube 3 and covers hydraulic pressure transfer through hole and protruding hole enlargement body on the central tube 3; above-mentioned outer sliding sleeve 5 is fixed on the central tube 3 by pin 7; lower contact 1 upper end is threaded with protective cover 2; the above slit of the uniform twice in above-mentioned protective cover 2 middle parts, above-mentioned upward packing 6 and following packing 4 are placed in the two ends up and down between outer sliding sleeve 5 and the central tube 3 respectively.
As a kind of preferred version of the present utility model, above-mentioned hydraulic pressure transfer through hole and draining through hole are four.
As further improvement of the utility model, above-mentioned draining through hole is Long Circle.
As a kind of preferred version of the present utility model, above-mentioned slit is six roads.
Above-mentioned lower contact 1 and top connection 8 outer ends all arrange the inner oil tube button.
Compared with prior art, the advantage of the utility model outer sliding sleeve bleeder is to adapt to high angle hole and horizontal well, and can once realize suppressing let out, the operation of kill-job, well-flushing, the pipeline of dismounting flow process has again made things convenient for operation.The beneficial effect of the utility model outer sliding sleeve bleeder is: to the lifting tubing string of high angle hole and horizontal well, as long as lifting tubing string (in the oil pipe) lining pumps into highly pressurised liquid when operation in from well head production tree production procedure outlet to well, sliding over of down-hole outer sliding sleeve bleeder begins to cut off nail under the highly pressurised liquid effect, outer sliding sleeve moves down at once and exposes four oval leakage openings when cutting off pin, lifting tubing string (in the oil pipe) lining fluid begins to let out in sleeve pipe, lifting tubing string in from well head production tree production procedure continuation to well (in the oil pipe) lining pumps into highly pressurised liquid, lifting tubing string (in the oil pipe) lining fluid is not only all let out in the sleeve pipe, and can be cleaned oil pipe interior oil water mixed liquid.Thereby when making in high angle hole and the horizontal well operation of lifting tubing string, bring the problem of very burden effectively to be solved because not opening the bleeder draining to operation.Thereby prevent the pollution of operation process.
Description of drawings
Fig. 1 is the structural representation of the utility model outer sliding sleeve bleeder.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.
As shown in Figure 1, the novel outer sliding sleeve bleeder of basis is made up of lower contact 1, protective cover 2, central tube 3, following packing 4, outer sliding sleeve 5, last packing 6, pin 7 and top connection 8.
The two ends up and down of this novel outer bleeder are to leave with the inner oil tube of oil pipe connection for the top connection 8 that connects with oil pipe and lower contact 1, two joint outer end to buckle; And top connection 8 is to be connected central tube 3 by tubing thread with lower contact 1 the inner, and central tube 3 upper, middle and lowers are provided with four uniform circular hydraulic pressure transfer through holes, the protruding hole enlargement body in upper end is provided with uniform four Long Circle draining through holes; Outer sliding sleeve 5 is to be enclosed within four uniform draining through holes on four outer uniform hydraulic pressure transfer through holes of central tube 3 and the protruding hole enlargement body, is fixed on by pin 7 and blocks draining through hole and hydraulic pressure transfer through hole on the central tube 3; Outer sliding sleeve 5 constitutes fluid cylinder chamber by last packing 6 with following packing 4 sealings and with protruding hole enlargement body with central tube 3 external diameters; Lower contact 1 upper end adopts common screw thread to be connected with protective cover 2; Protective cover 2 middle parts are provided with the communicate multiple tracks slit of (pressure balance) of inside and outside, and protective cover 2 is for avoiding knocking, bump, pound, blocking cavity under the outer sliding sleeve 5() design; The interior latus rectum of kit is identical with supporting oil pipe latus rectum.
The utility model outer sliding sleeve bleeder is that joint 1 is connected in oil pipe place on the pump of lifting tubing string in the well on the lower when using, and is connected to well head tubing string G.I.H by top connection 8 again and forms complete lifting tubing string.Lifting tubing string (in the oil pipe) lining pumps into highly pressurised liquid in needing only from well head production tree production procedure outlet to well during operation, high pressure liquid is located to stop by top connection 8, central tube 3, lower contact 1 ball-and-seat (reciprocating pump standing valve) to the pump to outer sliding sleeve bleeder top connection 8 from well head lifting tubing string (in the oil pipe) in well again.Ground continues that the lifting tubing string pumps into highly pressurised liquid in the well, and high pressure liquid acts on by the fluid cylinder chamber on the outer sliding sleeve 5 lower end undergauge faces through four hydraulic pressure transfer through holes on the central tube 3.Because outer sliding sleeve undergauge place, 5 lower end and upper end and central tube 3 have lower seal packing 4 and go up packing 6 sealed high pressure liquid and go further nowhere; only acting on the undergauge face downwards, (pressure low side) pushes away; this moment, the outer sliding sleeve upper end began to cut off nail 7; outer sliding sleeve 5 moves down at once when cutting off pin 7; the borehole wall that collides with when avoiding outer sliding sleeve to move down has designed protective cover 2 and has protected; expose four oval drainage through holes when outer sliding sleeve 5 moves on to, lifting tubing string (in the oil pipe) lining fluid begins to let out in sleeve pipe.Continuation from the production procedure of well head production tree to well in lifting tubing string (oil pipe in) lining pump into highly pressurised liquid, lifting tubing string (in the oil pipe) lining fluid is not only all let out in the sleeve pipe, can also clean oil, sewage, sand, the wax of oil pipe inside.Thereby when making in high angle hole and the horizontal well operation of lifting tubing string, bring the problem of very burden effectively to be solved because not opening the bleeder draining to operation.Thereby prevent the pollution of operation process.
The utility model outer sliding sleeve bleeder outward appearance is that the standard oil pipe thread that connects with tubing string is left at two ends, and the middle part is the special pipe nipple that has the oval cartridge type of many slits.
The utility model outer sliding sleeve bleeder course of work: when the oil well operation, carry in the well before the tubing string and pump and kit, connect in production tree production procedure exit earlier pump truck flow process pipeline to the OIH tubing string pressurization beat liquid, high pressure liquid passes to ball-and-seat place, down-hole through the OIH tubing string and goes further nowhere and begin to boost, high pressure liquid remakes on the fluid cylinder axial compression face that is used in outer sliding sleeve 5 bottoms by four round apertures on the central tube 3, downward force on acting on the fluid cylinder compression face rises in the time of can cutting off pin 7, pin 7 is cut off, fluid cylinder spurs outer sliding sleeve 5 and moves down and expose four oval type draining holes under action of hydraulic force, realize the oil pipe draining this moment, kill-job, well-flushing is once finished, and is not subjected to the restriction of instrument in hole deviation and well depth and the pipe.
Embodiment: the tiltedly dark 4560m of a bite oil well, pump is hung 3450(vertical depth 1500m) and m, producing fluid level vertical depth 1300m.Well mouth release valve packer setting pressure 10MPa, whole OIH pipe pressure testing 15MPa.Follow the situation according to this well, for safe and reliable assurance ordinary production, suppress pressure release power during operation and be decided to be 25MPa.Select sliding sleeve pin cross section to be: (25MPa+15MPa) * sliding sleeve cross-sectional area/pin is cut off stress, determines that diameter is 8mm.When operation, need only the liquid that comes that connects 25MPa in the well head production procedure, when coming liquid to act on the bottom fluid cylinder of outer sliding sleeve, can once finish to suppress and let out that (pin is cut off, outer sliding sleeve is descending, and the draining passage is opened), kill-job, well-flushing (circulation of the crude oil in the oil pipe, in the sleeve pipe is cleaned).
Claims (5)
1. outer sliding sleeve bleeder; by lower contact (1); protective cover (2); central tube (3); following packing (4); outer sliding sleeve (5); last packing (6); pin (7) and top connection (8) are formed; it is characterized in that: described top connection (1); central tube (3) and top connection (8) are threaded successively; described central tube (3) one ends are protruding hole enlargement body; last uniform two the above hydraulic pressure transfer through holes of described central tube (3); uniform two above draining through holes on the protruding hole enlargement body of described central tube (3); described outer sliding sleeve (5) is enclosed within central tube (3) upward and hydraulic pressure transfer through hole and protruding hole enlargement body on the covering central tube (3); described outer sliding sleeve (5) is fixed on the central tube (3) by pin (7); lower contact (1) upper end is threaded with protective cover (2); the above slit of described protective cover (2) the uniform twice in middle part, described upward packing (6) and following packing (4) are placed in the two ends up and down between outer sliding sleeve (5) and the central tube (3) respectively.
2. outer sliding sleeve bleeder according to claim 1, it is characterized in that: described hydraulic pressure transfer through hole and draining through hole are four.
3. outer sliding sleeve bleeder according to claim 1 and 2, it is characterized in that: described draining through hole is Long Circle.
4. outer sliding sleeve bleeder according to claim 1, it is characterized in that: described slit is six roads.
5. outer sliding sleeve bleeder according to claim 1, it is characterized in that: described lower contact (1) and top connection (8) outer end all arrange the inner oil tube button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320146546 CN203230386U (en) | 2013-03-28 | 2013-03-28 | Outer sliding sleeve type oil drain device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320146546 CN203230386U (en) | 2013-03-28 | 2013-03-28 | Outer sliding sleeve type oil drain device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203230386U true CN203230386U (en) | 2013-10-09 |
Family
ID=49286519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320146546 Expired - Fee Related CN203230386U (en) | 2013-03-28 | 2013-03-28 | Outer sliding sleeve type oil drain device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203230386U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643859A (en) * | 2018-03-27 | 2018-10-12 | 中国石油天然气股份有限公司 | Bleeder |
| US11591883B2 (en) | 2020-11-12 | 2023-02-28 | Plainsman Mfg. Inc. | Tubing drain with burst inner body |
-
2013
- 2013-03-28 CN CN 201320146546 patent/CN203230386U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643859A (en) * | 2018-03-27 | 2018-10-12 | 中国石油天然气股份有限公司 | Bleeder |
| US11591883B2 (en) | 2020-11-12 | 2023-02-28 | Plainsman Mfg. Inc. | Tubing drain with burst inner body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20210328 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |