CN201865626U - Damage-free anchored oil draining device for underground pipe column - Google Patents
Damage-free anchored oil draining device for underground pipe column Download PDFInfo
- Publication number
- CN201865626U CN201865626U CN2010206051146U CN201020605114U CN201865626U CN 201865626 U CN201865626 U CN 201865626U CN 2010206051146 U CN2010206051146 U CN 2010206051146U CN 201020605114 U CN201020605114 U CN 201020605114U CN 201865626 U CN201865626 U CN 201865626U
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- damage
- sleeve
- oil
- grappling
- cylinder sleeve
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Abstract
The utility model discloses a damage-free anchored oil draining device for an underground pipe column, which is applied in the underground pipe column in the oil industry, can prevent fatigue breakage of oil pipes, improve the efficiency of pumps and realize reliable oil drainage during oil production, and also has the function of damage-free anchored oil draining. The oil draining device comprises an upper connector, a cone, an anchor block, a cylinder sleeve, a central pipe and a lower connector, a sealing mechanism is arranged in the cylinder sleeve, the cone is provided with oil draining holes, the central pipe is provided with liquid inlets, and the periphery of the anchor block is provided with a damage-free protective layer to effectively prevent too deep insertion of slip teeth of the anchor block during anchoring of a sleeve and prevent the sleeve from being damaged. The original sealing mechanism is improved. The utility model prevents resistance during drilling, avoids anchoring in advance caused by imbalance of wellbore pressure, achieves production with no damage to the sleeve, and solves the problems of difficulty in release, clamping of drilling rigs and damage to the sleeve. Therefore, due to the utility model, the production cost can be reduced and economic benefits can be increased.
Description
Technical field
The utility model relates to the auxiliary equipment of petroleum industry down-hole string, particularly a kind of down-hole string does not have injury grappling bleeder, be the important tool of in the oil well production process, avoiding the tired break-off accident of oil pipe, improving pump efficiency and the reliable draining of energy, realized not having injury grappling oil draining function.
Background technology
The grappling bleeder that existing oil recovery flow string uses is made up of top connection, cone, slip insert, cylinder sleeve, inner central tube, welding piston, spring and lower pressing cap.When being used for the pump barrel grappling, the hydraulic action that relies on pump to take out self upwards pushes slips in cylinder sleeve, and slip insert is up to be stung tight sleeve pipe and realize grappling.In the time will playing the pump earial drainage, positive reincarnation is produced tubing string and is realized earial drainage.Because problems such as simple in structure and sealing system is unreasonable cause pressure system work unreliable, exposed problems is that pump is taken out seepage in the process, earial drainage, bit freezing etc. when pulling out of hole in advance.Wedging was too dark when the reason of trip-out bit freezing was slip insert grappling sleeve pipe, and sleeve pipe has been caused serious injury.
Summary of the invention
The purpose of this utility model provides a kind of down-hole string does not have injury grappling bleeder, overcomes the problem that existing conventional grappling bleeder instrument exists, and protective casing does not come to harm, and avoids tired disconnected the taking off of oil pipe.
The purpose of this utility model is achieved in that a kind of down-hole string does not have injury grappling bleeder and comprises top connection, cone, anchorage block, cylinder sleeve, central tube and lower contact; sealing mechanism is housed in the cylinder sleeve; cone is provided with the draining hole; central tube is provided with inlet opening; the periphery of anchorage block is provided with no injury protection layer, injury sleeve pipe when preventing grappling.
The utlity model has following useful effect: can realize the recovering the oil draining operation of flow string of the utility model top connection forward back-off; cylinder sleeve is taken out under the pressure effect up promotion anchorage block at pump and is anchored on and realizes grappling on the sleeve pipe; the return spring auxiliary cylinders is enclosed within the draining state descending; be convenient to the anchorage block return, thereby make instrument in the process of going into the well, can not shift to an earlier date the not wearing and tearing too early of grappling protection anchorage block.The utility model is provided with no injury protection layer in the periphery of anchorage block, and wedging is too dark in the time of can effectively preventing the slip insert grappling sleeve pipe of anchorage block, can not damage sleeve pipe.Improved original sealing mechanism, fixed piston has been connected with fixing lock ring, fixing lock ring has been installed in the below of central tube limited step; Upper piston has been installed again above sealing mechanism, has been made sealing mechanism more reliable, solved the problem of earial drainage in advance.Between cylinder sleeve and lower contact, spacing ring has been installed, has been implemented in the function of be hampered in the going down process not grappling and restriction grappling under design pressure.The utility model can realize that going down process prevents to be hampered, solve the grappling in advance that the wellbore pressure imbalance causes, after the grappling sleeve pipe has been realized not having injury and produce, solved the problem of unfreezing difficulty, bit freezing and injury sleeve pipe, thereby reduce production costs, increase economic efficiency.
Description of drawings
Accompanying drawing is a configuration diagram of the present utility model.
The specific embodiment
Describing in detail according to the utility model below in conjunction with accompanying drawing provides a kind of down-hole string not have the concrete structure of injury grappling bleeder.This bleeder comprises top connection 1, cone 3, anchorage block 4, cylinder sleeve 8, central tube 12 and lower contact 13, in the cylinder sleeve 8 sealing mechanism is housed, and cone 3 is provided with the draining hole, and central tube 12 is provided with inlet opening, and the periphery of anchorage block 4 is provided with no injury protection layer.No injury protection layer can be the topping that copper topping or nonmetals such as use vulcanized rubber, nylon are manufactured.Also be provided with upper piston 5 in the cylinder sleeve 8, this upper piston 5 is installed in the top of sealing mechanism and central tube 12 inlet openings.The fixed piston 6 of sealing mechanism is connected with fixing lock ring 7, and fixing lock ring 7 is installed in the below of central tube 12 limited steps, guarantees the reliability of lower seal.Between cylinder sleeve 8 and the lower contact 13 spacing ring 10 is housed also, lower contact 13 is fixing by shear pin 11 with spacing ring 10, prevents the not grappling that is hampered in the going down process, and restriction cylinder sleeve 8 is up in advance, has the function of restriction grappling under design pressure.
Each part of this instrument is assembled according to illustrated relative position.At first fixedly lock ring 7 is enclosed within central tube 12 limited step places, and fixed piston 6 is threaded with fixing lock ring 7.Upper piston 5 is inserted in central tube 12.With top connection 1 and cone 3 screwed connections, pressure cap 2 is connected with cone 3.Be inserted in central tube 12 after cylinder sleeve 8, anchorage block 4, cone 3 assemblings, cylinder sleeve 8 is connected with anchorage block 4 draw-in grooves.The upper piston 5 of packing in the cylinder sleeve 8, central tube 12 is threaded firmly with cone 3.Return spring 9 is put into cylinder sleeve 8, and spacing ring 10 is threaded with cylinder sleeve 8, and lower contact 13 is connected with central tube 12, adjusts the position of spacing ring 10 at last, and shear pin 11 is screwed.
During use, the utility model is installed in the top of oil well pump, enters, promote upper piston 5 and cylinder sleeve 8 and move upward along central tube 12 from the hydraulic coupling of surface pump inlet opening from central tube 12, shear pin 11 is cut off simultaneously, anchorage block 4 is released stung tight sleeve pipe realization grappling.During trip-out, positive tube post makes top connection 1 with respect to cone 3 back-offs, exposes the draining hole and realizes earial drainage.Behind the earial drainage, tubing string internal and external pressure balance, anchorage block 4, cylinder sleeve 8, upper piston 5 are got back to original position and are removed grappling under the effect of return spring 9, thereby can pull out of hole smoothly.
Claims (4)
1. a down-hole string does not have injury grappling bleeder; comprise top connection (1), cone (3), anchorage block (4), cylinder sleeve (8), central tube (12) and lower contact (13); cylinder sleeve is equipped with sealing mechanism in (8); cone (3) is provided with the draining hole; central tube (12) is provided with inlet opening, it is characterized in that the periphery of anchorage block (4) is provided with no injury protection layer.
2. a kind of down-hole string according to claim 1 does not have injury grappling bleeder, it is characterized in that also being provided with in the cylinder sleeve (8) upper piston (5), and this upper piston (5) is installed in the top of sealing mechanism and central tube (12) inlet opening.
3. a kind of down-hole string according to claim 1 and 2 does not have injury grappling bleeder, it is characterized in that between cylinder sleeve (8) and the lower contact (13) spacing ring (10) being housed also, and lower contact (13) is fixing by shear pin (11) with spacing ring (10).
4. a kind of down-hole string according to claim 1 does not have injury grappling bleeder, it is characterized in that the fixed piston (6) of sealing mechanism is connected with fixing lock ring (7), and fixedly lock ring (7) is installed in the below of central tube (12) limited step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206051146U CN201865626U (en) | 2010-11-02 | 2010-11-02 | Damage-free anchored oil draining device for underground pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206051146U CN201865626U (en) | 2010-11-02 | 2010-11-02 | Damage-free anchored oil draining device for underground pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201865626U true CN201865626U (en) | 2011-06-15 |
Family
ID=44136783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206051146U Expired - Fee Related CN201865626U (en) | 2010-11-02 | 2010-11-02 | Damage-free anchored oil draining device for underground pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201865626U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013007026A1 (en) * | 2011-07-14 | 2013-01-17 | 四川宏华石油设备有限公司 | Disconnector of downhole tool |
-
2010
- 2010-11-02 CN CN2010206051146U patent/CN201865626U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013007026A1 (en) * | 2011-07-14 | 2013-01-17 | 四川宏华石油设备有限公司 | Disconnector of downhole tool |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20111102 |