CN201059184Y

CN201059184Y - Automatic vertical drilling well thrust actuating unit

Info

Publication number: CN201059184Y
Application number: CNU200720025905XU
Authority: CN
Inventors: 聂云飞; 吴仲华; 马清明; 孙浩玉
Original assignee: Drilling Technology Research Institute of Sinopec Shengli Petroleum Administration Bureau
Current assignee: Drilling Technology Research Institute of Sinopec Shengli Petroleum Administration Bureau
Priority date: 2007-07-30
Filing date: 2007-07-30
Publication date: 2008-05-14
Anticipated expiration: 2017-07-30

Abstract

The utility model provides a down-hole tool thrust actuating mechanism of an automatic vertical drilling for the oil and gas exploration and development field, and mainly comprises a nozzle, a piston, a cylinder liner, a palm, a piston ring and a pin, wherein, the cylinder liner of the thrust actuating mechanism has a rectangular profile, and is provided with a round via hole inside, and one side of the round via hole is provided with a pin hole and a dovetail groove, and the lower part of the round via hole is provided with a seal groove, and an obturating ring is arranged in the seal groove; the piston is arranged in the round via hole of the cylinder liner, the external circle of the piston is provided with a piston ring groove, which is provided with the piston ring, an inner hole of the piston is provided with the nozzle, which is fixed by an elastic retainer ring, the palm and the cylinder liner are connected through the pin; drilling fluid produces hydraulic pressure difference when flowing into a borehole annulus through the nozzle, and the piston extends outwards under the function of pressure difference; meanwhile, the palm is driven outwards to support the shaft lining and produces hole straightening force. The utility model is arranged at the side of a down-hole tool offset mechanism of an automatic vertical drilling to match with a control system, and can produce the hole straightening force of certain direction.

Description

A kind of thrust execution device of automatic vertical drilling

Technical field

The utility model relates to a kind of automatic vertical drilling downhole tool thrust executing agency that is used for oil, natural gas exploration and development field.

Background technology

At present the straight well boring method in oil, natural gas exploration and development field is: come the control well oblique angle in keeping certain scope by artificial adjustment drilling parameter by deviational survey instrument measuring well again after tiltedly in drilling process.This method control accuracy is lower, and can't realize real-time corresponding control, complicated operating process, and there is higher construction risk in the construction cost height.

Summary of the invention

The automatic vertical drilling downhole tool can be by the control system that carries, hole angle in the control drilling process remains in certain scope automatically, and has the function to the inclined shaft well straightening, and whole control process need not manual intervention, can increase work efficiency, reduce risk, cost.The automatic vertical drilling downhole tool mainly is made up of control system and executing agency.The control system of automatic vertical drilling downhole tool is by controlling the generation that the thrust executing agency of installing in the executing agency realizes restoring force, to reach the purpose at well straightening and control well oblique angle.The purpose of this utility model is the thrust executing agency that provides a kind of fluid power to drive for the automatic vertical drilling downhole tool.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of thrust execution device of automatic vertical drilling, be installed in the side of automatic vertical drilling system actuator body, comprise nozzle, piston, cylinder sleeve, palm, bearing pin, an appearance profile is the cylinder sleeve of rectangle, manhole is arranged in the cylinder sleeve, one side has pin shaft hole and dovetail groove, there is seal groove in the outside, bottom, cylinder sleeve is installed in the side of actuator body, sealing ring is contained in the seal groove of cylinder sleeve, piston is installed in the manhole of cylinder sleeve, outside piston has piston ring groove, and piston ring is housed on the piston ring groove, and piston inner hole is equipped with nozzle, nozzle is fixed by circlip, is connected by bearing pin after the dovetail groove of palm and cylinder sleeve matches.The end that piston contacts with palm is the piston spherical crown, and three piston runners that are symmetrically distributed along circumference communicate with the endoporus that nozzle is installed.The appearance profile of palm is a rectangle, and the outer is an arc profile, and a side has rectangular aperture groove and circular palm pin shaft hole.

The utility model has the advantages that: simple in structure, reliable, response is fast, can action rapidly under the driving of seldom drilling fluid, can produce enough big thrust, piston seal is reliable, for the generation of automatic vertical drilling downhole tool restoring force provides good executing agency with accurately controlling.

Description of drawings

Fig. 1 is a kind of thrust execution device of automatic vertical drilling structural representation.

Fig. 2 is the piston structure signal.

Fig. 3 is the A-A sectional structure schematic diagram of Fig. 2.

Fig. 4 is the cylinder sleeve structural representation.

Fig. 5 is the palm structural representation.

1. cylinder sleeves among the figure, 2. palm, 3. piston, 4. nozzle, 5. circlip, 6. piston runner, 7. piston ring, 8. sealing ring, 9. bearing pin, the 10. borehole wall, 11. bore hole annulus, 12. actuator body, 13. piston ring grooves, 14. piston spherical crowns, 15. seal groove, 16. manholes, 17. dovetail grooves, 18. pin shaft hole, 19. palm pin shaft holes, 20. open slots.

The specific embodiment

Below in conjunction with the Fig. 1 in the description of drawings, Fig. 2, Fig. 3, Fig. 4, Fig. 5 the utility model is described further.

In Fig. 1, the novel cylinder sleeve 1 that an appearance profile is arranged for rectangle of this use has manhole 16, one sides that pin shaft hole 18 and dovetail groove 17 are arranged in the cylinder sleeve 1, and seal groove 15 is arranged at the bottom.Cylinder sleeve 1 is installed in the side of actuator body 12, and sealing ring 8 is contained in the seal groove of cylinder sleeve 1, and piston 3 is installed in the manhole 16 of cylinder sleeve, piston 3 cylindricals have piston ring groove 13, piston ring 7 is housed on the piston ring groove 13, and piston inner hole is equipped with nozzle 4, and nozzle 4 is fixed by circlip 5.The outer of palm 2 is an arc profile, one side has open slot 20 and palm pin shaft hole 19, can match with the dovetail groove 17 of cylinder sleeve and then be connected by bearing pin 9, drilling fluid produces fluid power pressure reduction through nozzle 4, piston runner 6 when flowing into bore hole annulus 11 in drilling process, protruding at the effect lower piston 3 piston spherical crowns 14 of pressure reduction drives the palm 2 outside backup boreholes wall 10 simultaneously and produces restoring forces.

Claims

1. thrust execution device of automatic vertical drilling, be installed in the side of automatic vertical drilling system actuator body, comprise nozzle (4), piston (3), cylinder sleeve (1), palm (2), bearing pin (9), it is characterized in that: the cylinder sleeve (1) that appearance profile is a rectangle, manhole (16) is arranged in the cylinder sleeve (1), one side has pin shaft hole (18) and dovetail groove (17), there is seal groove (15) in the outside, bottom, cylinder sleeve (1) is installed in the side of actuator body (12), sealing ring (8) is contained in the seal groove of cylinder sleeve (1), piston (3) is installed in the manhole (16) of cylinder sleeve, piston (3) cylindrical has piston ring groove (13), piston ring (7) is housed on the piston ring groove (13), piston inner hole is equipped with nozzle (4), nozzle (4) is fixing by circlip (5), is connected by bearing pin (9) after the dovetail groove (17) of palm (2) and cylinder sleeve (1) matches.

2. a kind of thrust execution device of automatic vertical drilling according to claim 1, it is characterized in that the end that piston (3) contacts with palm (2) is piston spherical crown (11), three piston runners (6) that are symmetrically distributed along circumference communicate with the endoporus that nozzle (4) is installed.

3. a kind of thrust execution device of automatic vertical drilling according to claim 1, the appearance profile that it is characterized in that palm (2) is a rectangle, and the outer is an arc profile, and a side has rectangular aperture groove (20) and circular palm pin shaft hole (19).