CN202832205U

CN202832205U - Vertical well drilling well straightening device

Info

Publication number: CN202832205U
Application number: CN 201220564998
Authority: CN
Inventors: 李明; 王大力
Original assignee: DAQING YONGCHEN PETROLEUM TECHNOLOGY Co Ltd
Current assignee: DAQING YONGCHEN PETROLEUM TECHNOLOGY Co Ltd
Priority date: 2012-10-31
Filing date: 2012-10-31
Publication date: 2013-03-27
Anticipated expiration: 2022-10-31

Abstract

Disclosed is a vertical well drilling well straightening device. The vertical well drilling well straightening device aims to solve the problem that a conventional pendulum drilling tool is not capable of overcoming natural deflecting ability of stratum. The vertical well drilling well straightening device comprises a device body. A flow channel is arranged in the center of the device body. An equilibrium liquid barrel is connected with the middle portion of the inner wall of the device body. Equilibrium liquid is contained in the equilibrium liquid barrel. Three float bowls are placed on the equilibrium liquid. Floating rods are connected on the float bowls. The floating rods are provided with circular grooves: an aerial drainage valve location A, a hydraulic valve location A, a hydraulic valve location B and an aerial drainage valve location B. Pistons are installed on three protrusions on the inner wall of the device body. The pistons are communicated with a hydraulic channel A, a hydraulic channel B, an aerial drainage channel A and an aerial drainage channel B. A piston rod is connected with a piston hinge. A ribbed plate hinge is connected with a ribbed plate and the device body. The middle portion of the ribbed plate is connected with the piston rod through a piston hinge. A seal ring is arranged at the sealing position. According to the principle that liquid surface maintains level, the ribbed plate installed on the device is enabled to move by means of internal and external pressure difference of a tubular column. The vertical well drilling well straightening device has the advantages that incline of borehole in drilling is automatically prevented, and risk of drilling jamming is reduced.

Description

A kind of vertical drilling well straightening device

Technical field

The utility model relates to the used drilling well well straightening device of oil drilling and Exploration Domain, especially a kind of vertical drilling well straightening device.

Background technology

The part block in oil field in the oil extraction in oil field field, stratigraphic dip is larger, well is easily oblique in straight well section drilling process, bring larger trouble for the construction in later stage, in the prospect pit drilling process, if the well gradient is excessive, will be related to construction in later period and whether can finishes smoothly, probably cause drilling well stranded midway, and the conventional pendulum assembly natural deflecting ability of layer insuperably.

Summary of the invention

In order to solve the insuperably problem of the natural deflecting ability of layer of conventional pendulum assembly, the utility model provides a kind of vertical drilling well straightening device, and this vertical drilling well straightening device has and automatically prevents from creeping into middle well and tilt, and has reduced the characteristics of bit freezing risk.

The technical solution of the utility model is: this vertical drilling well straightening device comprises device body, device body has up and down screw thread, there is flow channels at the center, the flow channels middle part is connected with the equilibrium liquid bucket, there is equilibrium liquid equilibrium liquid bucket the inside, three floating drums are arranged on the equilibrium liquid, connect floating lever on the floating drum, be distributed with diameter on the floating lever less than the annular groove of floating lever, be respectively: earial drainage valve position A, hydraulic pressure valve position A, hydraulic pressure valve position B, earial drainage valve position B, there are three internal protrusion at device body inwall middle part, in each projection piston is installed, piston passes through hydraulic channel A, hydraulic channel B communication apparatus inner body wall, and piston is by current by pass A, this external surface of current by pass B engaging means, piston rod connects piston hinge, and there are three rectangle recess, floor chain connection floor and device body in the device body outside, the floor middle part connects piston rod by piston hinge, and sealing place is equipped with sealing ring.

The utlity model has following beneficial effect: this vertical drilling well straightening device is owing to take such scheme, utilize liquid to remain at the earth's surface;on the face of the globe the principle of level, when creeping into when running into inclination aspect drill bit and departing from vertical centre, by the balanced action of the equilibrium liquid in the floating drum, excite corresponding floor action, correct drill bit and return vertical centre, has automatic deviation correction, reliable in action prevents from creeping into middle well and tilts, and has reduced the characteristics of bit freezing risk.

Description of drawings:

Accompanying drawing 1 is the utility model structural representation;

Accompanying drawing 2 is A-A place sectional drawings of Fig. 1.

Among the figure 1, device body; 2, the floor hinge; 3, floor; 4, piston; 5, piston hinge; 6, floating lever; 7, earial drainage valve position A; 8, current by pass A; 9, hydraulic channel A; 10, hydraulic pressure valve position A; 11, hydraulic pressure valve position B; 12, hydraulic channel B; 13, earial drainage valve position B; 14, current by pass B; 15, the equilibrium liquid bucket; 16, floating drum; 17, equilibrium liquid.

The specific embodiment:

The utility model is described in further detail below in conjunction with accompanying drawing:

By Fig. 1 in conjunction with shown in Figure 2, this a kind of vertical drilling well straightening device comprises device body 1, device body 1 be threaded up and down tubing string or drill bit, the center has flow channels to pass through drilling fluid, the flow channels middle part is connected with equilibrium liquid bucket 15, equilibrium liquid bucket 15 is airtight containers, there is a certain amount of resistant to elevated temperatures equilibrium liquid 17 the inside, three floating drums 16 are arranged on the equilibrium liquid 17, floating drum 16 tops connect floating lever 6, be distributed with diameter on the floating lever 6 less than the annular groove of floating lever, be respectively: earial drainage valve position A7, hydraulic pressure valve position A10, hydraulic pressure valve position B11, earial drainage valve position B13, there are three internal protrusion at device body 1 inwall middle part, piston 4 is installed in each projection, piston 4 is by hydraulic channel A9, hydraulic channel B10 communication apparatus body 1 inwall, piston 4 is by current by pass A8, and current by pass B14 engaging means body 1 external surface is when floating drum 16 departs from vertical centre because of drill bit, equilibrium liquid bucket 15 also departs from vertical centre, because equilibrium liquid 17 liquid levels still keep level, floating drum 16 produce upper or under action, drive floating lever 6 moves up and down, when the valve position of floating lever 6 moves to corresponding passage, cleaner for high-pressure drilling fluid enters piston 4, and the liquid of low-pressure end flows out by current by pass, and piston 4 bars connect piston hinge 5, there are three rectangle recess device body 1 outside, floor hinge 2 connects floor 3 and device body 1, and floor 3 middle parts connect piston rod 4 by piston hinge 5, piston 4 actions, piston rod makes floor 3 produce corresponding action, and sealing place is equipped with sealing ring.

During actual the use, when floating drum 16 departs from vertical centre left because of drill bit, equilibrium liquid bucket 15 also departs from vertical centre, because equilibrium liquid 17 liquid levels still keep level, corresponding floating drum 16 moves down, driving floating lever 6 moves down, hydraulic pressure valve position B11 enters hydraulic channel B12, cleaner for high-pressure drilling fluid enters piston 4 bottoms, piston 4 stretches out, floor 3 is paid by piston rod, supports the borehole wall so that drill bit returns vertical centred position, and the low pressure liquid at piston 4 tops flows out through earial drainage valve position A7 and current by pass A 8.

When floating drum 16 returns vertical centre to the right because of drill bit, equilibrium liquid bucket 15 also returns vertical centre, because equilibrium liquid 17 liquid levels still keep level, corresponding floating drum 16 moves up, and drives floating lever 6 and moves up, and hydraulic pressure valve position A10 enters hydraulic channel A9, cleaner for high-pressure drilling fluid enters piston 4 tops, piston 4 is retracted, and floor 3 is retracted by piston rod and is close to device body 1, and the low pressure liquid of piston 4 bottoms flows out through earial drainage valve position B13 and current by pass B14.So, when drill bit departs from, have corresponding one or two floor 3 and be excited and produce action, so that drill bit returns vertical centre, after the correction, corresponding floor 3 is got back to the home position.

In sum, this a kind of vertical drilling well straightening device utilizes liquid surface to remain the principle of level, and is simple in structure so that the floor that is installed on the device produces corresponding action by the pressure differential inside and outside the tubing string, reliable in action.

Claims

1. vertical drilling well straightening device, comprise device body (1), it is characterized in that: device body (1) has up and down screw thread, there is flow channels at the center, the flow channels middle part is connected with equilibrium liquid bucket (15), there is equilibrium liquid (17) equilibrium liquid bucket (15) the inside, three floating drums (16) are arranged on the equilibrium liquid (17), the upper floating lever (6) that connects of floating drum (16), be distributed with diameter less than the annular groove of floating lever (6) on the floating lever (6), be respectively: earial drainage valve position A (7), hydraulic pressure valve position A (10), hydraulic pressure valve position B (11), earial drainage valve position B (13), there are three internal protrusion at device body inwall (1) middle part, piston (4) is installed in each projection, piston (4) is by hydraulic channel A (9), hydraulic channel B (12) communication apparatus body (1) inwall, piston (4) is by current by pass A (8), current by pass B (14) engaging means body (1) external surface, piston (4) bar connects piston hinge (5), there are three rectangle recess device body (1) outside, floor hinge (2) connects floor (3) and device body (1), floor (3) middle part connects piston (4) bar by piston hinge (5), and sealing place is equipped with sealing ring.