CN212508076U

CN212508076U - Articulated head screw drill

Info

Publication number: CN212508076U
Application number: CN202021094891.9U
Authority: CN
Inventors: 王春生; 李云勇; 韩遇林
Original assignee: Hebei Lisen Petroleum Machinery Co ltd
Current assignee: Hebei Lisen Petroleum Machinery Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-02-09
Anticipated expiration: 2030-06-15

Abstract

The utility model discloses a hinged joint screw rod drilling tool, including drilling tool body and the hinged joint assembly of setting in the drilling tool body upper end, the hinged joint assembly includes female joint, bulb and the male joint that all runs through and sets up the cavity, cooperate the bulb in the female joint to set up the pendulum chamber, the upper end rotatable setting of bulb is in the pendulum chamber, the upper end of male joint is installed at the lower extreme of bulb, the lower extreme cooperation of male joint is installed in the upper end of drilling tool body; the utility model discloses the accessible is at the upper end installation hinge of lead screw drilling tool, turns to the bent angle that can further increase the lead screw drilling tool through the hinge to further reduce curvature radius, improve the build slope, conveniently communicate many places oil exploitation department by the shaft, improved the recovery ratio of oil.

Description

Articulated head screw drill

Technical Field

The utility model relates to an oil drilling technical field especially relates to hinge head screw rod drilling tool.

Background

The screw drilling tool is a positive displacement downhole power drilling tool which takes drilling fluid as power and converts the pressure energy of the fluid into mechanical energy. When slurry pumped by the slurry pump flows through the bypass valve and enters the motor, a certain pressure difference is formed between the inlet and the outlet of the motor, the rotor is pushed to rotate around the axis of the stator, and the rotating speed and the torque are transmitted to the drill bit through the universal shaft and the transmission shaft, so that the drilling operation is realized. At present, vertical wells are drilled at proper positions, and then branches are drilled in an inclined mode to lead to a plurality of oil exploitation positions, so that the number of the drilled vertical wells can be reduced, the abrasion of a screw drill for vertically drilling through hard rocks for many times is reduced, and the cost is saved. The guide screw drilling tool is used for deflecting, in order to drill a well with a certain inclination and a certain direction and control the track of the well, the guide screw drilling tool is provided with a certain bending degree, a universal shaft shell of the guide screw drilling tool is designed to be a bent shell, and the bending degree is generally 0-3 degrees, so that the requirement of a certain deflecting rate is met; the guide screw drilling tool is divided into a single-bending screw drilling tool and an adjustable-bending screw drilling tool, the structural bending angle of the single-bending screw drilling tool is fixed, and when the curvature radius of different well sections is changed greatly, the screw drilling tool needs to be replaced, so that different build slope requirements are met; the adjustable bending screw drilling tool can be used for randomly adjusting the bending angle of the screw drilling tool on a drilling platform so as to obtain a satisfactory build rate, the larger the adjustment angle is, the smaller the curvature radius is, the larger the build rate is, and the better the recovery ratio of oil is, but the adjustment angle of the conventional adjustable bending screw drilling tool is 0-3 degrees, and for an oil exploitation place close to a vertical shaft, the curvature radius of the conventional adjustable bending screw drilling tool is still larger, and the build rate still cannot meet the requirement.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to avoid prior art's weak point, provide the articulated joint screw rod drilling tool to effectively solve the weak point that exists among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: articulated head screw rod drilling tool, including drilling tool body and the articulated head assembly of setting in drilling tool body upper end, the articulated head assembly is including all running through female joint, bulb and the male joint of seting up the cavity, the pendulum chamber has been seted up to cooperation bulb in the female joint, the rotatable setting in the pendulum chamber in the upper end of bulb, the lower extreme at the bulb is installed to the upper end of male joint, the upper end at the drilling tool body is installed in the lower extreme cooperation of male joint.

Furthermore, the drilling tool body is a guide drilling tool, and an upper bending point and a lower bending point are arranged between a cardan shaft assembly of the guide drilling tool and the transmission shaft assembly.

Further, the bend angle of the upper bending point is 1 degree, and the bend angle of the lower bending point is 2 degrees.

Further, the upper end of the ball head is spherical, the pendulum cavity is matched with the ball head and is arranged into a spherical cavity, the two sides of the upper end of the ball head are provided with sliding key grooves, sliding blocks are arranged in the sliding key grooves, and the pendulum cavity is matched with the sliding blocks and is provided with a pendulum groove.

Further, shaft holes are formed in two sides of the upper end of the ball head, sliding shafts are arranged in the shaft holes, and rotating grooves are formed in the female joint in a matched mode with the sliding shafts.

Furthermore, a male joint locking nut for reinforcing the lower end of the ball head is arranged at the upper end of the male joint.

Furthermore, an opening sleeve is arranged in the male connector in a matched mode with the male connector lock nut, the inner ring of the opening sleeve is a conical surface, and the inner side of the male connector lock nut is also provided with the conical surface.

Further, a female joint locking nut for reinforcing the upper end of the ball head is arranged at the lower end of the female joint.

Furthermore, a disc spring is arranged on one side of the female joint lock nut close to the upper end of the ball head, and a sealing ring is arranged on the other side of the disc spring.

Furthermore, O-shaped rings are arranged on the inner side and the outer side of the sealing ring.

The above technical scheme of the utility model following beneficial effect has: the utility model discloses the accessible is at the upper end installation hinge of lead screw drilling tool, turns to the bent angle that can further increase the lead screw drilling tool through the hinge to further reduce curvature radius, improve the build slope, conveniently communicate many places oil exploitation department by the shaft, improved the recovery ratio of oil.

Drawings

Fig. 1 is a plan view of an embodiment of the present invention;

fig. 2 is a cross-sectional view of a hinge joint according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of the ball head and the female joint of the embodiment of the present invention.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-3, the articulated joint screw drill according to the embodiment includes a drill body 1 and an articulated joint assembly 2 disposed at an upper end of the drill body 1, where the articulated joint assembly 2 includes a female joint 21, a ball 22 and a male joint 23 all penetrating through the female joint and having a cavity, a swing cavity 21a is disposed in the female joint 21 in cooperation with the ball 22, an upper end of the ball 22 is rotatably disposed in the swing cavity 21a, an upper end of the male joint 23 is mounted at a lower end of the ball 22, and a lower end of the male joint 23 is mounted at an upper end of the drill body 1 in cooperation; the upper end and the lower end of the male joint 23 can be respectively screwed with the ball head 22 and the drilling tool body 1, and the upper end of the female joint 21 starts to be provided with an external screw hole 21b (namely, an external screw hole at the upper end of the bypass valve) which is the same as the upper end of the drilling tool body 1;

during drilling, can bore out vertical well earlier, when needing the syncline, then can propose the drilling rod, change for articulated joint screw rod drilling tool, then drop into the slant ware (being wedge-shaped guider promptly) in the well, articulated joint screw rod drilling tool drops into well to slant ware department can be through the direction syncline of slant ware, and male joint 23 rotates to the syncline degree in the pendulum chamber 21a of female joint 21 together with bulb 22 this moment, and the drilling tool work, carries out the syncline well drilling promptly.

Preferably, the drilling tool body 1 is a guide drilling tool, and an upper bending point 11 and a lower bending point 12 are arranged between a cardan shaft assembly and a transmission shaft assembly of the guide drilling tool;

preferably, the bending angle of the upper bending point 11 is 1 °, and the bending angle of the lower bending point 12 is 2 °.

Preferably, the drilling tool body 1 can also be an adjustable bending screw drilling tool, and the articulated joint can further improve the bending angle range of the drilling tool and improve the build rate.

Preferably, the upper end of the ball head 22 is spherical, the swing cavity 21a is matched with the ball head 22 to form a spherical cavity, the two sides of the upper end of the ball head 22 are provided with the sliding key grooves 22a, the sliding key grooves 22a are internally provided with the sliding blocks 221, the swing cavity 21a is matched with the sliding blocks 221 to form the swing grooves 21c, and the ball head 22 can rotate left and right through the matching of the sliding blocks 221 and the swing grooves 21c, so that the male connector 23 can swing left and right along with the ball head 22 to adjust the angle.

Preferably, shaft holes are formed in two sides of the upper end of the ball head 22, a sliding shaft 222 is arranged in the shaft holes, a rotating groove is formed in the female joint 21 in a matched mode with the sliding shaft 222, one end, matched with the rotating groove, of the sliding shaft 222 is square, one end, matched with the shaft holes, of the sliding shaft 222 is circular, the circular end of the sliding shaft 222 is inserted into the shaft holes, then the ball head 22 and a barrel of the sliding shaft 222 slide into the rotating groove, and the ball head 22 can rotate in the female joint 21 through the sliding shaft 222.

Preferably, the upper end of the male connector 23 is provided with a male connector locking nut 231 for reinforcing the lower end of the ball head 22, in this embodiment, the male connector locking nut 231 can be screwed on the male connector 23;

preferably, the male connector 23 is provided with an opening sleeve 232 in cooperation with the male connector lock nut 231, an inner ring of the opening sleeve 232 is a tapered surface, the inner side of the male connector lock nut 231 is also provided with a tapered surface, when the male connector lock nut 231 is screwed on the male connector 23, the male connector lock nut 231 tightly supports the opening sleeve 232 through the tapered surface, and the opening sleeve 232 can tightly support the male connector 23, so that the fastening performance is improved.

Preferably, the lower end of the female joint 21 is provided with a female joint locking nut 211 for reinforcing the upper end of the ball head 22, and in this embodiment, the female joint locking nut 211 can be screwed on the female joint 21;

preferably, a disc spring 212 is arranged on one side of the female joint locking nut 211 close to the upper end of the ball 22, a sealing ring 213 is arranged on the other side of the disc spring 212, the ball 22 is worn by multiple swinging, the sealing ring 213 is pressed on the upper end of the ball 22 by the female joint locking nut 211 through the disc spring 212, and the sealing performance between the sealing ring 213 and the ball 22 can be still maintained after the ball 22 is worn;

preferably, the sealing ring 213 is provided with O-rings 214 on both the inner side and the outer side, so as to further improve the sealing performance between the sealing ring 213 and the ball head 22, wherein the O-rings 214 are made of nitrile rubber.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. Articulated head screw rod drilling tool, its characterized in that: the drilling tool comprises a drilling tool body and a hinge assembly arranged at the upper end of the drilling tool body, wherein the hinge assembly comprises a female joint, a ball head and a male joint which are all penetrated through and provided with a cavity, a swinging cavity is formed in the female joint in a matched mode, the upper end of the ball head is rotatably arranged in the swinging cavity, the upper end of the male joint is arranged at the lower end of the ball head, and the lower end of the male joint is arranged at the upper end of the drilling tool body in a matched mode.

2. The articulated head progressive cavity drill of claim 1, wherein: the drilling tool body is a guide drilling tool, and an upper bending point and a lower bending point are arranged between a universal shaft assembly and a transmission shaft assembly of the guide drilling tool.

3. The articulated head progressive cavity drill of claim 2, wherein: the bent angle of the upper bending point is 1 degree, and the bent angle of the lower bending point is 2 degrees.

4. The articulated head progressive cavity drill of claim 1, wherein: the upper end of the ball head is spherical, the pendulum cavity is matched with the ball head and is arranged into a spherical cavity, the two sides of the upper end of the ball head are provided with sliding key grooves, sliding blocks are arranged in the sliding key grooves, and the pendulum cavity is matched with the sliding blocks and is provided with a swing groove.

5. The articulated head progressive cavity drill of claim 1, wherein: shaft holes are formed in two sides of the upper end of the ball head, sliding shafts are arranged in the shaft holes, and rotating grooves are formed in the female joint in a matched mode with the sliding shafts.

6. The articulated head progressive cavity drill of claim 1, wherein: and the upper end of the male joint is provided with a male joint lock nut for reinforcing the lower end of the ball head.

7. The articulated head progressive cavity drill of claim 6, wherein: an opening sleeve is arranged in the male connector in a matched mode with the male connector lock nut, the inner ring of the opening sleeve is a conical surface, and the inner side of the male connector lock nut is also provided with the conical surface.

8. The articulated head progressive cavity drill of claim 1, wherein: and a female joint locking nut for reinforcing the upper end of the ball head is arranged at the lower end of the female joint.

9. The articulated head progressive cavity drill of claim 8, wherein: and a disc spring is arranged on one side of the female joint lock nut close to the upper end of the ball head, and a sealing ring is arranged on the other side of the disc spring.

10. The articulated head progressive cavity drill of claim 9, wherein: and O-shaped rings are arranged on the inner side and the outer side of the sealing ring.