CN111764824A

CN111764824A - Lever-type guiding drilling tool and drilling device

Info

Publication number: CN111764824A
Application number: CN201910257275.6A
Authority: CN
Inventors: 刘维凯; 赵法军; 周云飞; 葛云华; 李士昌; 徐文; 冯金禹
Original assignee: Petrochina Co Ltd; Northeast Petroleum University
Current assignee: Petrochina Co Ltd; Northeast Petroleum University
Priority date: 2019-04-01
Filing date: 2019-04-01
Publication date: 2020-10-13
Anticipated expiration: 2039-04-01
Also published as: CN111764824B

Abstract

The invention discloses a lever-type guiding drilling tool and a drilling device, wherein the lever-type guiding drilling tool comprises a rotor (1) and an outer sleeve (2), a plurality of first hydraulic push plate units are arranged in the upper end of the outer sleeve (2), a plurality of second hydraulic push plate units are arranged in the lower end of the outer sleeve (2), each first hydraulic push plate unit comprises a first push plate (5) and a first hydraulic module (4), each first hydraulic module (4) can push the corresponding first push plate (5) to extend out of the outer peripheral surface of the outer sleeve (2), each second hydraulic push plate unit comprises a second push plate (9) and a second hydraulic module (10), and each second hydraulic module (10) can push the corresponding second push plate (9) to extend out of the outer peripheral surface of the outer sleeve (2). The lever-type guiding drilling tool comprises an upper group of push plates and a lower group of push plates, so that the deflecting capacity of the guiding tool can be greatly improved, and the stability of the tool is higher due to the use of the upper group of push plates and the lower group of push plates.

Description

Lever-type guiding drilling tool and drilling device

Technical Field

The invention relates to the field of drilling equipment, in particular to a lever type guiding drilling tool and a drilling device.

Background

With the rapid development of national economy, the national demand for oil and gas resources increases year by year. Oil and gas exploration strength is continuously increased, and exploitation difficulty is gradually increased. Many oil field reservoir thickness are little, and stratum structure is complicated, and the straight well is difficult to satisfy present exploitation requirement, and horizontal well improvement exploitation efficiency that can to a great extent, however the drilling technology of horizontal well is more complicated, and rotatory steering tool takes place in due charge, and each big oil company of world wide is all studying the rotatory steering tool who is applied to the horizontal well, and the rotatory steering tool of push type is the steering tool that uses more extensively, the suitability is stronger. However, the push-type rotary guiding tool has the problems of weak deflecting capability and insufficient power.

Disclosure of Invention

In order to solve the problem of poor stability of the existing guiding tool, the invention provides a lever type guiding drilling tool and a drilling device. The lever-type guiding drilling tool and the drilling device are more suitable for directional wells, horizontal wells and other wells, particularly extended reach wells.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides a lever direction drilling tool, including rotor and outside sleeve, outside the rotor was located to outside sleeve cover, the rotor can rotate for outside sleeve, be equipped with a plurality of first hydraulic pressure push pedal units in the upper end of outside sleeve, be equipped with a plurality of second hydraulic pressure push pedal units in the telescopic lower extreme of outside, this first hydraulic pressure push pedal unit contains first push pedal and first hydraulic module, first hydraulic module can promote first push pedal and stretch out outside telescopic outer peripheral face, this second hydraulic pressure push pedal unit has second push pedal and second hydraulic module, the second hydraulic module can promote the second push pedal and stretch out outside telescopic outer peripheral face.

A drilling device comprises a drill bit and the lever type guiding drilling tool, wherein the drill bit is fixedly connected with the upper end of a rotor through an upper connector, and the distance from the working end of the drill bit to a first hydraulic push plate unit is smaller than the distance from the first hydraulic push plate unit to a second hydraulic push plate unit.

The invention has the beneficial effects that: the lever-type guiding drilling tool comprises an upper group of push plates and a lower group of push plates, so that the deflecting capacity of the guiding tool can be greatly improved, and the stability of the tool is higher due to the use of the upper group of push plates and the lower group of push plates. The lever-type guiding drilling tool and the drilling device are more suitable for directional wells, horizontal wells and other wells, particularly extended reach wells.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

FIG. 1 is a front view of a lever guided drilling tool according to the present invention.

Fig. 2 is a sectional view taken along a-a in fig. 1.

Fig. 3 is a sectional view taken along the direction B-B in fig. 1.

Fig. 4 is an enlarged schematic view of a portion D or E in fig. 1.

Fig. 5 is a schematic view of the outer sleeve at D in fig. 1.

Fig. 6 is a schematic view in the direction C in fig. 5.

FIG. 7 is a schematic diagram of a first hydraulic module.

Fig. 8 is a schematic view of the first piston.

Fig. 9 is a simplified schematic diagram of a drilling rig.

1. A rotor; 2. an outer sleeve; 3. a first piston; 4. a first hydraulic module; 5. a first push plate; 6. an energy master control module; 7. a control module; 8. a pin shaft; 9. a second push plate; 10. a second hydraulic module; 11. a second piston; 12. a metal composite sheet; 13. a signal transmission module; 14. an upper joint; 15. a drive shaft section; 16. a lower joint section.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The utility model provides a lever-type direction drilling tool, including rotor 1 and external sleeve 2, external sleeve 2 cover is located outside rotor 1, rotor 1 can rotate for external sleeve 2, be equipped with a plurality of first hydraulic pressure push pedal units in external sleeve 2's the upper end, be equipped with a plurality of second hydraulic pressure push pedal units in external sleeve 2's the lower extreme, this first hydraulic pressure push pedal unit contains first push pedal 5 and first hydraulic module 4, first hydraulic module 4 can promote outside first push pedal 5 stretches out external sleeve 2's the periphery, this second hydraulic pressure push pedal unit has second push pedal 9 and second hydraulic module 10, second hydraulic module 10 can promote outside second push pedal 9 stretches out external sleeve 2's the periphery, as shown in fig. 1-8.

In this embodiment, the axis of the rotor 1 coincides with the axis of the outer sleeve 2, the first hydraulic push plate units and the second hydraulic push plate units are both located in the cylinder wall of the outer sleeve 2, the plurality of first hydraulic push plate units are uniformly distributed along the circumferential direction of the outer sleeve 2 at intervals, and the plurality of second hydraulic push plate units are also uniformly distributed along the circumferential direction of the outer sleeve 2 at intervals.

In this embodiment, the installation grooves of the hydraulic push plate units are arranged in the cylinder wall of the outer sleeve 2, the three first hydraulic push plate units are uniformly distributed at intervals along the circumferential direction of the outer sleeve 2, and the three second hydraulic push plate units are also uniformly distributed at intervals along the circumferential direction of the outer sleeve 2. The three first hydraulic push plate units and the three second hydraulic push plate units are in one-to-one correspondence along the circumferential direction of the outer sleeve 2.

In this embodiment, the first hydraulic module 4 includes the first piston 3, the lower end of the first push plate 5 is hinged to the cylinder wall of the outer sleeve 2 through the first pin, the upper end of the first push plate 5 is connected to the first piston 3 (if the hinged mode can be adopted), and the first piston 3 can push the upper end of the first push plate 5 to extend out of the outer peripheral surface of the outer sleeve 2.

In this embodiment, the first hydraulic push plate unit and the second hydraulic push plate unit have the same structure, the second hydraulic module 10 includes a second piston 11, the upper end of the second push plate 9 is hinged to the cylinder wall of the outer sleeve 2 by a pin 8, the lower end of the second push plate 9 is connected to the second piston 11 (if a hinged manner can be adopted), and the second piston 11 can push the lower end of the second push plate 9 to extend out of the outer circumferential surface of the outer sleeve 2.

In this embodiment, the first hydraulic push plate unit and the second hydraulic push plate unit are mirror images of each other, the axis of the first pin shaft is perpendicular to the axis of the outer sleeve 2, the first push plate 5 is a long strip-shaped structure, the length direction of the first push plate 5 is parallel to the axis of the outer sleeve 2, and the first piston 3 is located on the inner side of the first push plate 5, as shown in fig. 2.

In this embodiment, a control module 7 is disposed in the wall of the outer sleeve 2, and the control module 7 can control the first hydraulic push plate unit and the second hydraulic push plate unit, that is, the control module 7 can enable the first piston 3 to push the upper end of the first push plate 5 to extend out of the outer peripheral surface of the outer sleeve 2, and enable the second piston 11 to push the lower end of the second push plate 9 to extend out of the outer peripheral surface of the outer sleeve 2. The control module 7 is located between the first hydraulic push plate unit and the second hydraulic push plate unit.

In this embodiment, contain along the interior through-hole that the axial is link up in the rotor 1, along the axial of rotor 1, rotor 1 contains transmission shaft section 15 and the lower clutch section 16 that connects gradually, and in transmission shaft section 15 cover was located outside sleeve 2, transmission shaft section 15 can clearance fit with outside sleeve 2, and lower clutch section 16 is located outside sleeve 2.

In the present embodiment, an energy main control module 6 is disposed in a side wall of the transmission shaft section 15, and the energy main control module 6 can supply power to the control module 7 and send a control signal. The power supply mode can adopt the existing wireless charging mode, and the sending control signal can adopt the existing wireless signal receiving and sending mode.

In this embodiment, a signal transmission module 13 is disposed in the lower connector segment 16, and the signal transmission module 13 is connected to the energy main control module 6. The near-bit well deviation measuring module is connected with the signal transmission module 13. The upper end of the rotor 1 is externally connected with an upper joint 14, and when the drill bit is used, the upper joint 14 is connected with a drill bit, so that the drill bit is driven to synchronously rotate after the rotor 1 rotates.

In this embodiment, a plurality of metal composite sheets 12 for reducing friction loss are disposed on end faces of two ends of the outer sleeve 2, and the plurality of metal composite sheets 12 are uniformly distributed along the circumferential direction of the outer sleeve 2 at intervals. The end face of the upper joint 14 facing the outer sleeve 2 may also be provided with a plurality of metal composite sheets 12 for reducing friction loss, and the end face of the lower joint segment 16 facing the outer sleeve 2 may also be provided with a plurality of metal composite sheets 12 for reducing friction loss.

In the present invention, the outer sleeve 2 is used to assemble parts that are either held stationary or rotated slightly relative to the formation. The rotor 1 is used to transmit the torque of the upper drill collar to the drill bit. The first hydraulic module 4 and the second hydraulic module 10 are used to generate power to the push plate. The first push plate 5 and the second push plate 9 are used for supporting the well wall, so that the drilling direction of the drill bit is controlled. The control module is used for controlling the action of the pistons in the first hydraulic push plate unit and the second hydraulic push plate unit.

In use, the energy master control module 6 processes energy and signals and is connected to the lower MWD system via wires via the signal transfer module 13. The control module 7 is arranged inside the sleeve and is connected with the first hydraulic module 4 and the second hydraulic module 10 through leads; the control module 7 of the outer sleeve 2 and the energy main control module 6 of the inner sleeve complete wireless transmission of energy and signals together.

The operation of the lever guided drilling tool will now be described.

The energy main control device 6 supplies power and provides signals for the control module 7 in a wireless mode, the first hydraulic module 4 pushes the upper end of the first push plate 5 to stretch out of the outer peripheral surface of the outer sleeve 2, and the second hydraulic module 10 pushes the lower end of the second push plate 9 to stretch out of the outer peripheral surface of the outer sleeve 2. The rotor 1 is driven to rotate by the rotation of the lower drill collar. Due to the action of the first push plate 5 and the second push plate 9, the outer sleeve 2 does not rotate or slightly rotates, and the rotor 1 and the outer sleeve 2 rotate relatively. Because the upper part and the lower part of the lever type guiding drilling tool are respectively provided with a plurality of groups of hydraulic pushing push plates, the drilling direction of the drill bit can be better controlled.

A drilling device is introduced below, the drilling device comprises a drill bit and the above lever-type guiding drilling tool, the drill bit is fixedly connected with the upper end of the rotor 1 through the upper joint 14, specifically, the tail end of the drill bit is fixedly connected with the upper end of the upper joint 14, the upper end of the rotor 1 is fixedly connected with the lower end of the upper joint 14, the distance from the working end (i.e., the tooth end) of the drill bit to the first hydraulic push plate unit (corresponding to L1 in fig. 9) and the distance from the first hydraulic push plate unit to the second hydraulic push plate unit (corresponding to L2 in fig. 9), and L1 is smaller than L2.

The working principle of the drilling device can be described by applying a model as shown in fig. 9. Two sets of push plates can be simplified into two fulcrums, and the drill bit connected with the lever type guiding drilling device is also simplified into one fulcrum. Specifically, the working end of the drill corresponds to the fulcrum a, the first push plate 5 corresponds to the fulcrum B, and the second push plate 9 corresponds to the fulcrum C.

The stress on the three fulcrums can be respectively simplified into Fm1, Fn1 and F; f1, Fm 2; f2, Fn2, Fm 3. The mechanical relationship is as follows: fn1 ═ Fn2, M ═ Fm1+ Fm2+ Fm3) × D (D is moment), F ═ F1 × L1+ F2 × L2)/L1. F represents the lateral force of the drill bit on the rock in the formula, and the lateral force of the drill bit can be influenced by the force generated by the two groups of push plates according to the formula, so that the drilling is influenced.

The above description is only exemplary of the invention and should not be taken as limiting the scope of the invention, so that the invention is intended to cover all modifications and equivalents of the embodiments described herein. In addition, the technical features and the technical schemes, and the technical schemes can be freely combined and used.

Claims

1. A lever type guiding drilling tool is characterized by comprising a rotor (1) and an outer sleeve (2), wherein the outer sleeve (2) is sleeved outside the rotor (1), the rotor (1) can rotate relative to the outer sleeve (2), a plurality of first hydraulic push plate units are arranged in the upper end of the outer sleeve (2), a plurality of second hydraulic push plate units are arranged in the lower end of the outer sleeve (2), the first hydraulic push plate unit comprises a first push plate (5) and a first hydraulic module (4), the first hydraulic module (4) can push the first push plate (5) to stretch out of the peripheral surface of the outer sleeve (2), the second hydraulic push plate unit is provided with a second push plate (9) and a second hydraulic module (10), and the second hydraulic module (10) can push the second push plate (9) to stretch out of the outer peripheral surface of the outer sleeve (2).

2. A lever guided drilling tool as claimed in claim 1, wherein the axis of the rotor (1) coincides with the axis of the outer sleeve (2), the first and second hydraulic push pedal units are located in the wall of the outer sleeve (2), the first hydraulic push pedal units are evenly spaced along the circumference of the outer sleeve (2), and the second hydraulic push pedal units are also evenly spaced along the circumference of the outer sleeve (2).

3. A lever type guided drilling tool as claimed in claim 1, wherein the first hydraulic module (4) comprises a first piston (3), the lower end of the first push plate (5) is hinged to the wall of the outer sleeve (2) by a first pin, the upper end of the first push plate (5) is connected to the first piston (3), and the first piston (3) can push the upper end of the first push plate (5) to protrude out of the outer circumferential surface of the outer sleeve (2).

4. A lever type guided drilling tool as claimed in claim 3, wherein the first hydraulic push plate unit and the second hydraulic push plate unit are mirror images of each other, the axis of the first pin shaft is perpendicular to the axis of the outer sleeve (2), the first push plate (5) has a long strip-shaped structure, the length direction of the first push plate (5) is parallel to the axis of the outer sleeve (2), and the first piston (3) is positioned at the inner side of the first push plate (5).

5. A lever type guided drilling tool according to claim 1, wherein a control module (7) is provided in the wall of the outer sleeve (2), the control module (7) being capable of controlling the first and second hydraulic push plate units, the control module (7) being located between the first and second hydraulic push plate units.

6. A lever type guiding drilling tool as claimed in claim 5, wherein the rotor (1) has an inner through hole running through in the axial direction, the rotor (1) has a transmission shaft section (15) and a lower joint section (16) connected in sequence in the axial direction of the rotor (1), the transmission shaft section (15) is sleeved in the outer sleeve (2), and the lower joint section (16) is located outside the outer sleeve (2).

7. A lever-type guided drilling tool as claimed in claim 6, wherein the energy master control module (6) is arranged in the side wall of the transmission shaft section (15), and the energy master control module (6) can supply power to the control module (7) and send control signals.

8. A leveraged-guided drilling tool according to claim 7, characterized in that a signal transfer module (13) is arranged in the lower joint section (16), the signal transfer module (13) being connected to the energy master control module (6).

9. A lever type guided drilling tool as claimed in claim 1, wherein a plurality of metal composite pieces (12) for reducing friction loss are provided on both end faces of the outer sleeve (2), and the plurality of metal composite pieces (12) are uniformly spaced along the circumference of the outer sleeve (2).

10. A drilling device, characterized in that the drilling device comprises a drill bit and the lever-type guided drilling tool as claimed in claim 1, the drill bit is fixedly connected with the upper end of the rotor (1) through an upper joint (14), and the distance from the working end of the drill bit to the first hydraulic push plate unit is smaller than the distance from the first hydraulic push plate unit to the second hydraulic push plate unit.