CN212716477U

CN212716477U - Guiding drilling device

Info

Publication number: CN212716477U
Application number: CN202021230599.5U
Authority: CN
Inventors: 梁涛; 赵东瑞
Original assignee: Beijing Bwg Petroleum Technology Co ltd
Current assignee: Beijing Bwg Petroleum Technology Co ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-03-16
Anticipated expiration: 2030-06-29

Abstract

The utility model discloses a guiding well drilling device, which comprises three independently controlled thrust devices and an outer shell, wherein the three thrust devices are uniformly and fixedly connected with the outer shell in the circumferential direction; the outer shell is hinged with three wing ribs which are respectively matched with the three thrust devices for use, and the thrust of the three thrust devices acts on the well wall along three different directions through the wing ribs. The three wing ribs are pushed against the well wall after being opened, and three component forces acting on the three wing ribs are finally gathered into a resultant force acting on the guide drilling instrument and form an acting angle with the well wall. The thrust device comprises a piston mechanism pushing the wing ribs open. The magnitude of the force of the piston acting on the wing rib can be adjusted and changed through software control, and further the magnitude and the direction of the pushing force of the wing rib acting on the well wall can be adjusted, so that the guide drilling instrument drills along a specified track, and the drilling track is accurately controlled.

Description

Guiding drilling device

Technical Field

The utility model relates to an oil and gas exploration equipment technical field, in particular to direction drilling equipment.

Background

Along with the continuous deepening of oil and gas exploration, complex ultra-deep directional wells and large-displacement horizontal wells are increasing. In the drilling construction of a large-displacement horizontal well, the supporting pressure and the abrasion resistance of a downhole drilling tool are increased along with the lengthening of a horizontal section, the track control difficulty is high, and the mechanical drilling speed is slow. The prior art drilling techniques rely primarily on sliding steerable drilling. When the sliding type guide drilling operation is carried out, the drill stem does not rotate, and the drill stem slides forwards along with the drill bit to be pushed. Sliding type guide drilling has many shortcomings and shortcomings, and the main problems are that:

(1) the torque and the friction resistance of the drill stem are large;

(2) difficulty in cleaning the wellbore;

(3) the mechanical drilling speed is slow;

(4) the type selection of the drill bit is limited;

(5) the positioning precision is inaccurate;

therefore, the sliding guide drilling equipment in the prior art is difficult to meet construction requirements.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a guiding well drilling device to solve at least one of the problem that exists among the foretell prior art.

The utility model adopts the following technical scheme:

a guiding well drilling device comprises three independently controlled thrust devices and an outer shell, wherein the three thrust devices are uniformly and fixedly connected to the outer shell in the circumferential direction; the outer shell is hinged with three wing ribs which are respectively matched with the three thrust devices for use, and the thrust of the three thrust devices acts on the well wall along three different directions through the wing ribs.

Further, the thrust device comprises a piston mechanism for pushing the wing rib to open.

Further, piston mechanism includes interior casing, piston mounting panel, piston head and piston gum cover, is equipped with the mounting groove on the interior casing, and piston mounting panel fixed connection is in the mounting groove, and the crimping piston in the piston mounting panel, piston mounting panel and mounting groove diapire form the hydro-cylinder, and piston top fixedly connected with piston head, piston upper portion cover are equipped with the piston gum cover.

Furthermore, the inner shell comprises a long body, one side of the long body is bent and extended to form an installation part, and the middle part of the installation part is provided with an installation groove for installing the piston mechanism; a first long hole and a second long hole which are arranged in parallel are formed in the long body, a driving mechanism for driving the piston to move is fixedly connected in the first long hole, and an oil tank mechanism matched with the driving mechanism is fixedly connected in the second long hole; hydraulic oil pore canals are arranged between the first long hole and the second long hole and between the first long hole and the mounting groove.

Furthermore, the outer side wall of the inner shell is an arc surface, and the tangent of the arc surface is perpendicular to the central axis of the piston; and a vertical connecting line of the central axes of the first long hole and the second long hole forms an angle of 123 degrees with the end surface of the mounting groove. .

Furthermore, the driving mechanism comprises a synchronous motor, an output shaft of the synchronous motor is connected with a micro pump, an inlet of the micro pump is connected with the oil tank mechanism, an outlet of the micro pump is connected with a pump head, an outlet of the pump head is connected with a throttle valve and an overflow valve, a high-pressure pore passage is arranged on the pump head, and the pump head is communicated with the oil cylinder through the high-pressure pore passage; the throttle valve outlet and the overflow valve outlet are provided with low-pressure pore channels, and the throttle valve outlet is communicated with the oil tank mechanism through the low-pressure pore channels.

Furthermore, one end of the long body is fixedly connected with a short body, the short body is provided with a first blind hole communicated with the first long hole, and the driving mechanism is arranged in a cavity formed by the first long hole and the first blind hole; one end of the long body is provided with a second blind hole, the short body is provided with a third blind hole communicated with the second blind hole, and a cavity formed by the second blind hole and the third blind hole is internally provided with a pressure sensor.

Further, oil tank mechanism includes that oil pipe, oil pocket connecting rod, oil tank skeleton, oil pocket press seat and oil tank socket, oil pocket connecting rod and oil tank skeleton fixed connection, oil pipe cup joints on the oil pocket connecting rod, the oil pocket cover is established in the oil pipe outside and is cup jointed on the oil tank skeleton, the seat is pressed to the outside fixed connection oil pocket of oil tank skeleton, the oil pocket crimping presses between the seat at oil tank skeleton and oil pocket, oil tank socket presses a seat fixed connection with the oil pocket.

The utility model has the advantages as follows:

1. the utility model discloses there are three wing ribs to articulate on the shell body, and the thrust device who has three independent control simultaneously also installs on the shell body, and thrust device's piston top is leaned on the wing rib, drives the wing rib through piston motion around the round pin axle luffing motion, can push away to lean on the wall of a well or leave the wall of a well according to direction wing rib. The thrust of the piston in each thrust device can be controlled independently, and the thrust applied to the wing rib by the piston of each thrust device is controllable. Therefore, when the three wing ribs are opened and pushed against the well wall, the three component forces acting on the three wing ribs are finally gathered into a resultant force acting on the guide drilling instrument and form an acting angle with the well wall. The magnitude of the force of the piston acting on the wing rib can be adjusted and changed through software control, and further the magnitude and the direction (angle) of the pushing force of the wing rib acting on the well wall can be adjusted, so that the guide drilling instrument drills along a specified track, and the drilling track is accurately controlled.

2. The utility model discloses small, thrust is big, and the action is nimble, under the control of controller and software, can change orientation and turn to two kinds of operating modes in real time, accomplishes directional syncline in succession, increases one's bank, surely inclines, falls to one side and turns round the position operation, and need not play the change drilling tool combination of boring, just can drill out the well drilling mode of high-quality well orbit fast.

3. The utility model discloses can guarantee that the drilling tool realizes the drilling of appointed direction under the state of full rotation, accomplish the rotary steering well drilling promptly. Meanwhile, the track of the well can be accurately controlled, the track of the well is guaranteed to be smoother, the quality of the well wall is better, the risk of sticking the drill is reduced, the underground operation is safer, and the cost of the underground operation is greatly reduced.

4. The utility model discloses an interior casing lateral wall is the arc surface, the axis of mounting groove with the tangent line of arc surface is perpendicular, and the perpendicular connecting wire of first slot hole and second slot hole axis becomes 123 jiaos with the mounting groove terminal surface, and three thrust device's interior casing can closely combine into complete cylindricly, and three interior casing combines the back rational in infrastructure and compact, and compressive capacity is strong, and the during operation has good stability.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic structural diagram of the piston mechanism of the present invention;

FIG. 3 is an axial vertical end sectional view of FIG. 2;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is an enlarged schematic view of the structure at B in FIG. 4;

fig. 6 is an enlarged schematic view of the structure at C in fig. 3.

Fig. 7 is a schematic structural view of the inner housing of the present invention;

FIG. 8 is a perspective view of the elongated body of FIG. 7;

FIG. 9 is a front view of the elongated body of FIG. 7;

FIG. 10 is a cross-sectional view of the D-D surface of FIG. 9;

FIG. 11 is a perspective view of the short body of FIG. 7;

FIG. 12 is a perspective view of the short body of FIG. 7;

shown in the figure: 1-outer shell, 2-wing rib, 3-piston mechanism, 301-piston head, 302-piston rubber sleeve, 303-piston mounting plate, 304-piston, 305-lower movable sealing ring, 306-upper movable sealing ring, 307-oil cylinder, 308-O-shaped ring, 4-inner shell, 401-long body, 402-short body, 403-mounting part, 404-mounting groove, 405-first long hole, 406-second long hole, 407-second blind hole, 408-first blind hole, 409-third blind hole, 410-step structure, 5-driving mechanism, 501-synchronous motor, 502-micro pump, 503-pump head, 504-throttle valve, 505-overflow valve, 506-filter screen, 6-oil tank mechanism, 601-oil bag, 602-oil pipe, 603-oil bag connecting rod, 604-oil tank framework, 605-oil tank socket, 606-oil bag pressing seat, 607-O-shaped ring, 7-vertical connecting line and 8-thrust device.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The technical solution of the present invention is further explained with reference to fig. 1 to 12.

A guiding well drilling device comprises three independently controlled thrust devices and an outer shell 1, wherein the three thrust devices are uniformly and fixedly connected to the outer shell 1 in the circumferential direction; the outer shell 1 is hinged with three wing ribs 2 which are respectively matched with three thrust devices for use, and the thrust of the three thrust devices acts on the well wall along three different directions through the wing ribs 2.

The thrust device comprises a piston mechanism 3 which pushes the rib 2 open. Piston mechanism 3 includes interior casing 4, piston mounting panel 303, piston 304, piston head 301 and piston gum cover 302, is equipped with mounting groove 404 on the interior casing 4, and piston mounting panel 303 fixed connection is in mounting groove 404, and piston 304 is pressed in the piston mounting panel 303, and piston mounting panel 303 and mounting groove 404 diapire form hydro-cylinder 307, and piston 304 top fixedly connected with piston head 301, piston 304 upper portion cover are equipped with piston gum cover 302. The outer side wall of the piston 304 is provided with two annular grooves, and a lower dynamic sealing ring 305 and an upper dynamic sealing ring 306 are respectively arranged in the annular grooves. The piston head 301 is T-shaped, and an O-ring 308 is pressed on the contact surface of the piston 304 and the piston head 301.

The inner shell 4 comprises a long body 401, one side of the long body 401 is bent and extended with a mounting part 403, and the middle part of the mounting part 403 is provided with a mounting groove 404 for mounting the piston mechanism 3; a first long hole 405 and a second long hole 406 which are arranged in parallel are arranged in the long body 401, a driving mechanism 5 for driving the piston to move is fixedly connected in the first long hole 405, and an oil tank mechanism 6 matched with the driving mechanism 406 for use is fixedly connected in the second long hole 406; hydraulic oil ducts are arranged between the first long hole 405 and the second long hole 406 and between the first long hole 405 and the mounting groove 404.

The outer side wall of the inner shell 4 is an arc surface, and the tangent of the arc surface is vertical to the central axis of the piston 304; the vertical connecting line of the central axes of the first long hole 405 and the second long hole 406 forms an angle of 123 degrees with the end surface of the mounting groove 404. .

The driving mechanism 5 comprises a synchronous motor 501, an output shaft of the synchronous motor 501 is connected with a micropump 502, an inlet of the micropump 502 is connected with the oil tank mechanism 6, an outlet of the micropump 502 is connected with a pump head 503, an inner cavity of the pump head 503 is provided with a filter screen 506, an outlet of the pump head 503 is connected with a throttle valve 504 and an overflow valve 505, the pump head 503 is provided with a high-pressure hole channel, and the pump head 503 is communicated with an oil cylinder 307 through the high-; the outlet of the throttle valve 504 and the outlet of the overflow valve 505 are provided with low-pressure ducts, and the outlet of the throttle valve 504 is communicated with the oil tank mechanism 6 through the low-pressure ducts.

One end of the long body 401 is fixedly connected with a short body 402, the end part of the short body 402 is of a step structure 410, the short body 402 is provided with a first blind hole 408 communicated with the first long hole 405, and the driving mechanism 5 is arranged in a cavity formed by the first long hole 405 and the first blind hole 408; one end of the long body 401 is provided with a second blind hole 407, the short body 402 is provided with a third blind hole 409 communicated with the second blind hole 407, and a cavity formed by the second blind hole 407 and the third blind hole 409 is provided with a pressure sensor.

The outer side wall of the inner shell 4 is an arc surface, and the tangent line of the arc surface is vertical to the central axis of the piston; and a vertical connecting line 7 of central axes of the first long hole and the second long hole forms an angle of 123 degrees with the end surface of the mounting groove 404.

The oil tank mechanism 6 comprises an oil pipe 602, an oil bag 601, an oil bag connecting rod 603, an oil tank framework 604, an oil bag pressing seat 606 and an oil tank socket 605, the oil bag connecting rod 603 is fixedly connected with the oil tank framework 604, the oil pipe 602 is sleeved on the oil bag connecting rod 603, the oil bag 601 is sleeved on the outer side of the oil pipe 602 and sleeved on the oil tank framework 604, the outer side of the oil tank framework 604 is fixedly connected with the oil bag pressing seat 606, the oil bag 601 is pressed between the oil tank framework 604 and the oil bag pressing seat 606, and the oil tank socket 605 is fixedly connected with the oil bag pressing seat 606.

The working principle of the utility model is as follows:

the synchronous motor is started, the synchronous motor drives the micropump to operate, low-pressure oil in the oil bag enters the micropump through the inlet of the micropump, high-pressure oil generated by the operation of the micropump enters the filter screen through the outlet of the micropump to be filtered, part of the filtered high-pressure oil enters the oil cylinder of the piston mechanism through the high-pressure pore passage to push the piston to move, and the rest part of the filtered high-pressure oil flows back to the oil bag through the low-pressure pore passage through the throttle valve. Once the oil pressure exceeds the rated pressure of the thrust device, high-pressure oil overflows through the overflow valve, so that the oil pressure is lower than the rated pressure, and the overflowing oil flows back into the oil bag through the low-pressure pore passage. By adjusting the rotating speed of the synchronous motor, the oil pressure can be changed, and the thrust of the piston can be further changed. The oil pressure of each thrust device is transmitted to the external controller in real time through the pressure sensor.

The utility model discloses a three thrust device is used thrust at three wing ribs, and thrust device's piston top leans on the groove that pushes away of wing rib, drives the wing rib through piston motion around the round pin axle luffing motion, and the wing rib is used thrust on the wall of a well. When the three wing ribs are opened and pushed against the well wall, the three component forces acting on the three wing ribs are finally gathered into a resultant force acting on the guide drilling instrument and form an acting angle with the well wall. The external controller and software are used for controlling and adjusting and changing the thrust of each thrust device acting on the wing rib, so that the size and direction (angle) of the thrust force of the wing rib acting on the well wall can be adjusted, the guide drilling instrument can drill along a specified track, and the drilling track can be accurately controlled.

The controller, the hydraulic control method and the trajectory calculation and control method of the present invention are outside the protection scope of the present invention.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A guiding well drilling device is characterized by comprising three independently controlled thrust devices and an outer shell, wherein the three thrust devices are uniformly and fixedly connected to the outer shell in the circumferential direction; the outer shell is hinged with three wing ribs which are respectively matched with the three thrust devices for use, and the thrust of the three thrust devices acts on the well wall along three different directions through the wing ribs.

2. A steerable drilling apparatus as in claim 1, wherein the thrust means comprises a piston mechanism pushing the rib open.

3. The steerable drilling device according to claim 2, wherein the piston mechanism comprises an inner housing, a piston mounting plate, a piston head and a piston rubber sleeve, the inner housing is provided with a mounting groove, the piston mounting plate is fixedly connected in the mounting groove, the piston is pressed in the piston mounting plate, the piston mounting plate and the bottom wall of the mounting groove form an oil cylinder, the piston head is fixedly connected to the top of the piston, and the piston rubber sleeve is sleeved on the upper portion of the piston.

4. The steerable drilling device of claim 3, wherein the inner housing comprises an elongated body, a mounting portion is bent and extended from one side of the elongated body, and a mounting groove for mounting the piston mechanism is formed in the middle of the mounting portion; a first long hole and a second long hole which are arranged in parallel are formed in the long body, a driving mechanism for driving the piston to move is fixedly connected in the first long hole, and an oil tank mechanism matched with the driving mechanism is fixedly connected in the second long hole; hydraulic oil pore canals are arranged between the first long hole and the second long hole and between the first long hole and the mounting groove.

5. The steerable drilling device of claim 4, wherein the outer side wall of the inner housing is a circular arc surface, and the tangent of the circular arc surface is perpendicular to the central axis of the piston; and a vertical connecting line of the central axes of the first long hole and the second long hole forms an angle of 123 degrees with the end surface of the mounting groove.

6. The steerable drilling device according to claim 4, wherein the driving mechanism comprises a synchronous motor, an output shaft of the synchronous motor is connected with a micropump, an inlet of the micropump is connected with the oil tank mechanism, an outlet of the micropump is connected with a pump head, an outlet of the pump head is connected with a throttle valve and an overflow valve, the pump head is provided with a high-pressure hole channel, and the pump head and the oil cylinder are communicated through the high-pressure hole channel; the throttle valve outlet and the overflow valve outlet are provided with low-pressure pore channels, and the throttle valve outlet is communicated with the oil tank mechanism through the low-pressure pore channels.

7. The steerable drilling device of claim 4, wherein a short body is fixedly connected to one end of the long body, the short body is provided with a first blind hole communicating with the first slot hole, and the driving mechanism is disposed in a cavity formed by the first slot hole and the first blind hole; one end of the long body is provided with a second blind hole, the short body is provided with a third blind hole communicated with the second blind hole, and a cavity formed by the second blind hole and the third blind hole is internally provided with a pressure sensor.

8. The steerable drilling device of any one of claims 4 to 7, wherein the oil tank mechanism comprises an oil pipe, an oil bag connecting rod, an oil tank skeleton, an oil bag pressing seat and an oil tank socket, the oil bag connecting rod is fixedly connected with the oil tank skeleton, the oil pipe is sleeved on the oil bag connecting rod, the oil bag is sleeved outside the oil pipe and sleeved on the oil tank skeleton, the oil bag pressing seat is fixedly connected with the outside of the oil tank skeleton, the oil bag is pressed between the oil tank skeleton and the oil bag pressing seat, and the oil tank socket is fixedly connected with the oil bag pressing seat.