Windowing and drilling integrated steering device

Abstract

The invention provides a windowing and drilling integrated steering device which is characterized in that a drilling channel and a windowing channel which are independent from each other are arranged in an integrated mechanism, and a drilling hole communicated with the drilling channel and a windowing hole communicated with the windowing channel are formed in the circumferential direction of the integrated mechanism; the steering mechanism is provided with a lifting and placing column and a steering assembly, the lifting and placing column is movably arranged in the steering assembly in a penetrating mode, the steering track is annularly arranged in the circumferential direction of the lifting and placing column, the lifting and placing column is outwards provided with a reversing key in a protruding mode in the radial direction of the lifting and placing column, and the reversing key is movably embedded in the steering track. The steering track is provided with a steering wall which inclines towards the axial direction of the lifting and placing column in the circumferential direction of the lifting and placing column, the lifting and placing column can rotate or stop being fixed through abutting connection of the steering key and the steering wall, and the lifting and placing column is connected to the top of the integrated mechanism and used for driving the integrated mechanism to synchronously move or rotate; the problem of integrated construction operation of underground windowing operation and steering drilling operation is solved, the construction technology is simplified, and casing windowing and jet drilling are achieved more efficiently.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas drilling equipment, and in particular to a window drilling integrated steering device. Background Art

[0002] The description in this section merely provides background information related to the present disclosure and does not constitute prior art.

[0003] Ultra-short radius side-drilling horizontal well drilling technology (also known as radial horizontal well drilling technology) refers to turning from the vertical direction to the horizontal direction in a vertical wellbore under ultra-short radius conditions (that is, the radius is less than or equal to 300mm), and drilling one or more horizontal wellbores distributed radially along the radial direction, so as to build a three-dimensional oil and gas migration network of "one layer with multiple branches, one well with multiple layers" in the reservoir, which can greatly improve the efficiency of oil and gas migration and increase the production of a single well. Therefore, the development of the steering device is the core difficulty of this technology. The steering devices previously studied have successively solved the problems of changing direction under ultra-short radius conditions, steering in casing, and reducing the resistance of the operating pipeline. However, there are still problems such as the small size of the track limiting the hydraulic power transmitted to the well, which leads to the difficulty of opening the casing window. There are also problems such as low efficiency, high cost, and poor hole opening effect due to the need to lower the pipe string twice for window opening and drilling operations. The research and development of high-performance steering devices has become a key problem restricting the development of hydraulic jet radial horizontal well technology.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present invention and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology section of the present invention. Summary of the invention

[0005] The purpose of the present invention is to provide an integrated window opening and drilling steering device, which solves the problem of integrated construction of underground window opening and steering drilling operations, simplifies the construction process, and realizes casing window opening and jet drilling more efficiently.

[0006] The above-mentioned implementation objectives of the present invention are mainly achieved by the following technical solutions:

[0007] The present invention provides a window-opening and drilling integrated steering device, comprising:

[0008] An integrated mechanism, wherein a drilling channel and a window channel are provided independently of each other, window holes and drilling holes are provided at intervals along the circumference of the integrated mechanism, the drilling channel is connected to the drilling hole, and the window channel is connected to the window hole;

[0009] A steering mechanism, comprising a lifting column and a steering assembly, wherein the lifting column is movably inserted into the steering assembly, wherein the steering assembly has a steering track, wherein the steering track is arranged along the circumference of the lifting column, wherein the lifting column is provided with a reversing key protruding radially outwardly thereof, wherein the reversing key is movably embedded in the steering track, wherein the steering track has a reversing wall inclined along the circumference of the lifting column toward the axial direction of the lifting column, wherein the lifting column can rotate or stop being fixed by the contact between the reversing key and the reversing wall, wherein the lifting column is connected to the top of the integrated mechanism, and is used to drive the integrated mechanism to move or rotate synchronously;

[0010] Among them, when the integrated steering device for window opening and drilling is in the state of window opening operation, the window opening hole is opposite to the working area; when the integrated steering device for window opening and drilling is in the state of drilling operation, the integrated mechanism can be rotated through the steering mechanism until the drilling hole is opposite to the working area.

[0011] In a specific embodiment,

[0012] The turning wall comprises a first wall and a second wall which are opposite to each other along the axial direction of the lifting column, wherein the first wall is located on a side close to the wellhead, and the second wall is located on a side close to the well bottom;

[0013] The first wall is inclined along the circumference of the lifting column toward the axial direction of the lifting column and close to the wellhead, and the lifting column in a state of moving toward the wellhead can rotate through the contact between the reversing key and the first wall; a clamping angle is formed at one end of the second wall, and the lifting column in a state of moving toward the bottom of the well can be stopped and fixed through the clamping of the reversing key and the clamping angle to limit the rotation angle of the lifting column.

[0014] In a specific embodiment,

[0015] The second wall is inclined along the circumference of the lifting column toward the axial direction of the lifting column and toward the bottom of the well. The lifting column in a state of moving toward the bottom of the well can rotate through the contact between the reversing key and the second wall. The clamping corner is formed at one end of the second wall close to the bottom of the well.

[0016] Wherein, a section of the second wall close to the wellhead overlaps with a section of the first wall close to the wellhead in the circumferential direction of the lifting column.

[0017] In a specific embodiment,

[0018] A limited angle portion is formed at one end of the first wall close to the wellhead, and the lifting column in a state of moving toward the wellhead can stop rotating by the engagement between the reversing key and the limited angle portion, and the limited angle portion overlaps with the middle portion of the second wall in the circumferential direction of the lifting column.

[0019] In a specific embodiment,

[0020] The turning track has a plurality of turning walls, and the plurality of turning walls are connected end to end along the turning track.

[0021] In a specific embodiment,

[0022] The steering assembly includes an upper steering tube and a lower steering tube which are arranged along the axial direction of the lifting column.

[0023] The lifting column is movably inserted into the upper steering tube and the lower steering tube, and the lower end of the upper steering tube and the upper end of the lower steering tube are divided to form the steering track, wherein a plurality of the first walls are connected end to end along the circumference of the lifting column and formed at the lower end of the upper steering tube, and a plurality of the second walls are connected end to end along the circumference of the lifting column and formed at the upper end of the lower steering tube.

[0024] In a specific embodiment,

[0025] The steering assembly further comprises a sleeve, through which the upper steering tube and the lower steering tube are sealed and connected, and the sleeve is sleeved on the outer side of the lower end of the upper steering tube and the outer side of the upper end of the lower steering tube.

[0026] In a specific embodiment,

[0027] A first channel and a second channel are provided side by side at the top of the integrated mechanism, the first channel is connected to the window channel, and the second channel is connected to the drilling channel. A guide is also provided on the top of the integrated mechanism, and the guide has an inclined surface inclined toward the second channel. A ball seat is provided in the second channel, and a blocking ball guided by the inclined surface can be blocked on the ball seat.

[0028] In a specific embodiment,

[0029] The guide member is pressed above the first channel, and a guide channel is also opened on the inclined surface. The guide channel is connected to the first channel. When the blocking ball is blocked on the ball seat, the guide channel can guide the pressure liquid to flow from the first channel to the window channel.

[0030] In a specific embodiment,

[0031] A connecting part and a connecting rod are formed at the bottom of the integrated mechanism. The connecting rod is extended along the axial direction of the lifting column. One end of the connecting rod is passed through the inner cavity of the connecting part, and the other end of the connecting rod passes through the connecting part and is connected to the lower oil pipe. A rotating bearing is provided at one end of the connecting rod passing through the inner cavity of the connecting part, and the connecting rod is rotatably connected to the inner wall of the connecting part through the rotating bearing.

[0032] Compared with the prior art, the technical solution of the present invention has the following characteristics and advantages:

[0033] The integrated window drilling steering device provided by the present invention, by providing a steering track and a steering wall in the steering mechanism, can cause the lifting column to rotate through the abutment of the reversing key with the steering wall, and the lifting column can drive the integrated mechanism to rotate through its own rotation. When the integrated window drilling steering device is in the underground state, the integrated mechanism can be rotated so that in the window opening operation state, the window opening hole can be rotated to the direction of the area to be operated, and in the drilling operation state, the drilling hole can be rotated to the direction of the area to be operated, that is, by switching between the two states of the integrated mechanism, the window opening operation and the drilling operation at the predetermined position can be completed at one time of drilling, thereby reducing the number of drilling and lowering times and improving the efficiency of side drilling radial well operations.

[0034] The integrated window opening and drilling steering device provided by the present invention can effectively ensure the rotation angle of the integrated mechanism and avoid axial movement of the integrated mechanism through the arrangement of the steering track and the steering wall and the abutment movement of the reversing key. The abrasive jet has the same operation center for the casing window opening operation and the drilling operation, which optimizes the positioning process and improves the positioning efficiency.

[0035] The integrated window opening and drilling steering device provided by the present invention switches the window opening and drilling modes due to the overall rotation of the integrated mechanism. The setting size of the drilling channel and the window opening channel does not need to consider the limitations of other structures, and can form larger window opening holes and drilling holes to the greatest extent, and maximize the diameters of the drilling channel and the window opening channel, and maximize the turning radius, thereby achieving good hole opening effect, high efficiency, and large aperture in the window opening and drilling process, thereby reducing operating costs and risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a cross-sectional view of the window-opening and drilling integrated steering device of the present invention in a window-opening state;

[0037] Figure 2 It is a structural diagram of the window-opening and drilling integrated steering device of the present invention in a window-opening state;

[0038] Figure 3 It is a cross-sectional view of the window-opening and drilling integrated steering device of the present invention in a drilling state;

[0039] Figure 4 It is a structural diagram of the window-opening and drilling integrated steering device of the present invention in a drilling state;

[0040] Figure 5 It is a structural diagram of the lifting column of the window opening and drilling integrated steering device of the present invention;

[0041] Figure 6 A cross-sectional view of the steering track of the window-opening and drilling integrated steering device of the present invention;

[0042] Figure 7 It is a structural diagram of the steering track of the window opening and drilling integrated steering device of the present invention;

[0043] Figure 8 It is a structural diagram of a clamp of the window-opening and drilling integrated steering device of the present invention;

[0044] Fig. 9 A top view of a clamp of the window-opening and drilling integrated steering device of the present invention;

[0045] Fig.10 It is a first cross-sectional view of the clamp of the window opening and drilling integrated steering device of the present invention;

[0046] Fig.11 A second cross-sectional view of the clamp of the window opening and drilling integrated steering device of the present invention;

[0047] Fig.12 A structural diagram of a steering device of the window opening and drilling integrated steering device of the present invention;

[0048] Fig.13 A top view of the steering device of the window opening and drilling integrated steering device of the present invention;

[0049] Fig.14 A first cross-sectional view of the steering gear of the window-opening and drilling integrated steering device of the present invention;

[0050] Fig.15 A second cross-sectional view of the steering gear of the window-opening and drilling integrated steering device of the present invention;

[0051] Fig.16 It is a structural diagram of the guide member of the window opening and drilling integrated steering device of the present invention;

[0052] Fig.17 It is a cross-sectional view of the connection portion of the window opening and drilling integrated steering device of the present invention;

[0053] Fig.18 It is a front view of the connecting portion of the window opening and drilling integrated steering device of the present invention;

[0054] Fig.19 A cross-sectional view of a connecting rod of the window-opening and drilling integrated steering device of the present invention;

[0055] Fig. 20 It is a front view of the connecting rod of the window opening and drilling integrated steering device of the present invention;

[0056] Fig.21 A cross-sectional view of a casing of the window-opening drilling integrated steering device of the present invention;

[0057] Fig. 22 It is a top view of the casing of the window drilling integrated steering device of the present invention.

[0058] Description of Figure Numbers:

[0059] 100. Integrated organization;

[0060] 100A, holder; 110A, open cavity; 120A, holder cavity;

[0061] 100B, steering gear;

[0062] 110, drilling channel; 120, window channel; 130, window hole; 140, drilling hole; 150, first channel; 160, second channel; 161, ball seat; 170, connecting part; 180, connecting rod; 190, rotating bearing;

[0063] 200, steering mechanism;

[0064] 210, lifting column; 211, reversing key;

[0065] 220, steering assembly; 221, upper steering tube; 222, lower steering tube; 223, sleeve;

[0066] 230, turning track; 231, turning wall; 2311, first wall; 2312, second wall; 2313, clamping corner; 2314, limiting corner;

[0067] 300, guide member; 310, inclined surface; 320, guide channel;

[0068] 400, rotating drill mechanism;

[0069] 500, sealing ring;

[0070] F. The axial direction of the lifting column. DETAILED DESCRIPTION

[0071] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0072] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0073] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0074] Abrasive water jet is a liquid-solid two-phase medium jet formed by a mixture of abrasive and high-pressure, high-flow water. It is widely used in underground rock breaking, industrial cutting, etc. Because abrasive jet has a strong ability to cut and break windows under high pressure, when abrasive jet is used for window opening in horizontal well construction technology, it can open a larger area of ​​complete section compared to the traditional radial window opening tool in the casing 223, thereby improving the operation efficiency. The window opening mode of the present invention mainly uses abrasive jet for window opening.

[0075] like Figure 1 to Figure 2 As shown, the present invention provides a window-opening and drilling integrated steering device, comprising:

[0076] The integrated mechanism 100 has a drilling channel 110 and a window channel 120 that are independent of each other, and window holes 130 and drilling holes 140 are spaced apart along the circumference of the integrated mechanism 100. The drilling channel 110 is connected to the drilling hole 140, and the window channel 120 is connected to the window hole 130;

[0077] The steering mechanism 200 comprises a lifting column 210 and a steering assembly 220. The lifting column 210 is movably arranged in the steering assembly 220. The steering assembly 220 comprises a steering track 230. The steering track 230 is arranged along the circumference of the lifting column 210. The lifting column 210 is provided with a reversing key 211 protruding outwardly along its own radial direction. The reversing key 211 is movably embedded in the steering track 230. The steering track 230 comprises a steering wall 231 inclined along the circumference of the lifting column 210 toward the axial direction F of the lifting column 210. The lifting column 210 can rotate or stop being fixed by the contact between the reversing key 211 and the steering wall 231. The lifting column 210 is connected to the top of the integrated mechanism 100 to drive the integrated mechanism 100 to move or rotate synchronously.

[0078] Among them, when the integrated steering device for window opening and drilling is in the window opening operation state, the window opening hole 130 is opposite to the working area; when the integrated steering device for window opening and drilling is in the drilling operation state, the integrated mechanism 100 can be rotated through the steering mechanism 200 until the drilling hole 140 is opposite to the working area.

[0079] The integrated window drilling steering device provided by the present invention, by setting a steering track 230 and a steering wall 231 in the steering mechanism 200, can rotate the lifting column 210 through the contact between the reversing key 211 and the steering wall 231, and the lifting column 210 can drive the integrated mechanism 100 to rotate through its own rotation. When the integrated window drilling steering device is in the underground state, through the rotation of the integrated mechanism 100, in the window opening operation state, the window opening hole 130 can be rotated to the direction of the area to be operated, and in the drilling operation state, the drilling hole 140 can be rotated to the direction of the area to be operated. That is, by switching between the two states of the integrated mechanism 100, the window opening operation and the drilling operation at the predetermined position can be completed at one time of drilling, thereby reducing the number of drilling and lowering times and improving the efficiency of side drilling radial well operations.

[0080] The integrated window opening and drilling steering device provided by the present invention can effectively ensure the rotation angle of the integrated mechanism 100 and avoid axial movement of the integrated mechanism 100 through the arrangement of the steering track 230 and the steering wall 231 and the abutment movement of the reversing key 211. The operation center of the abrasive jet window opening operation and the drilling operation on the casing 223 is the same, which optimizes the positioning process and improves the positioning efficiency.

[0081] The integrated window opening and drilling steering device provided by the present invention switches the window opening and drilling modes due to the overall rotation of the integrated mechanism 100. The setting size of the drilling channel 110 and the window opening channel 120 does not need to consider the limitations of other structures, and can form larger window opening holes 130 and drilling holes 140 to the greatest extent, and maximize the diameters of the drilling channels 110 and the window opening channels 120, and maximize the turning radius, thereby achieving good hole opening effect, high efficiency, and large aperture in the window opening and drilling process, thereby reducing operating costs and risks.

[0082] Specifically, in this embodiment, the integrated mechanism 100 is composed of a clamp 100A and a diverter 100B. In another embodiment, the integrated mechanism 100 can also be directly integrated and formed, and there is no specific limitation to this.

[0083] Related References Figures 8 to 11 As shown, in this embodiment, the clamp 100A is cylindrical in shape, and an open cavity 110A is formed inside the clamp 100A. The open cavity 110A is generally rectangular in shape. The open cavity 110A penetrates the clamp 100A along the radial direction of the clamp 100A. The top of the clamp 100A is connected to the lifting column 210 for synchronous rotation with the lifting column 210 and movement along the axial direction F of the lifting column 210. A stepped clamp cavity 120A is formed at the top of the clamp 100A. The clamp cavity 120A is connected to the open cavity 110A for inputting the pressure liquid in the lifting column 210 into the drilling channel 110 or the window channel 120.

[0084] Related References Figures 12 to 15 As shown, in this embodiment, the diverter 100B is generally in the shape of a semi-cylinder, and the side of the diverter 100B is forward, and the diverter 100B can be placed in or passed through the open cavity 110A along the radial direction of the clamp 100A. When the diverter 100B and the clamp 100A are installed, the diverter 100B and the clamp 100A cooperate to form a complete columnar body; in this embodiment, the clamp 100A and the diverter 100B can be fixedly installed together by welding. Of course, in other embodiments, the clamp 100A and the diverter 100B can also be assembled by rivets, magnetic connection or mechanical connection, etc., which is not limited here.

[0085] In this embodiment, the interior of the diverter 100B includes an arc-shaped or broken-line drilling channel 110 and a window channel 120. A window hole 130 and a drilling hole 140 are provided on the arc surface of the diverter 100B. The window hole 130 and the drilling hole 140 are arranged on the arc surface of the diverter 100B at intervals along the circumference of the diverter 100B. There is a certain phase angle between the window hole 130 and the drilling hole 140, and the phase angle can be consistent with the rotation angle of the reversing key 211 when it abuts against the diverting wall 231 and moves to the stop position, so that the integrated mechanism 100 with the window hole 130 aligned with the working area can be rotated and stopped at the position where the drilling hole 140 is aligned with the working area only through the abutment of the reversing key 211. In another embodiment, the stop position may not be set, that is, the rotation angle of the integrated mechanism 100 is measured by a special tool, and there is no specific restriction on this.

[0086] Related References Figure 1 As shown, in this embodiment, a rotating drill mechanism 400 is installed in the window opening channel 120 to provide a rotating jet during the window opening operation. The window opening channel 120 and the window opening hole 130 constitute a complete window opening operation channel in the integrated mechanism 100. In this embodiment, the drilling channel 110 is an arc-shaped channel for coordinating the turning of the drilling tool. The cross-sectional shape of the drilling channel 110 is circular. In other embodiments, the cross-sectional shape of the drilling channel 110 is not specifically limited in this application.

[0087] In this embodiment, the steering assembly 220 is generally a tubular assembly, the axis of the lifting column 210 is coaxial with the axis of the steering assembly 220, the lifting column 210 is movably arranged in the steering assembly 220 along its own axial direction, the steering track 230 is arranged along the circumference of the steering assembly 220, and the steering track 230 is formed with steering walls 231 on both sides of the axial direction F of the lifting column 210, that is, when the lifting column 210 is lifted or lowered, the reversing key 211 will abut against the steering wall 231, and the extension direction of the steering wall 231 is limited to the steering wall 231 inclined along the circumference of the lifting column 210 toward the axial direction F of the lifting column 210, that is, the extension direction of the steering wall 231 The direction can be from the circumference of the lifting column 210 to the axial direction F of the lifting column 210 and inclined toward the wellhead, or the extension direction of the turning wall 231 can be from the circumference of the lifting column 210 to the axial direction F of the lifting column 210 and inclined toward the bottom of the well. Both of them can realize that the abutment between the reversing key 211 and the turning wall 231 drives the lifting column 210 and the integrated mechanism 100 to rotate, so that when the window drilling integrated steering device is in the window opening operation state, the window hole 130 is opposite to the working area; when the window drilling integrated steering device is in the drilling operation state, the integrated mechanism 100 can be rotated through the steering mechanism 200 to the drilling hole 140 is opposite to the working area.

[0088] like Figure 6 and Figure 7 As shown, in one specific embodiment,

[0089] The turning wall 231 includes a first wall 2311 and a second wall 2312 which are opposite to each other along the axial direction F of the lifting column 210. The first wall 2311 is located on a side close to the wellhead, and the second wall 2312 is located on a side close to the well bottom.

[0090] The first wall 2311 is inclined along the circumference of the lifting column 210 toward the axial direction F of the lifting column 210 and close to the wellhead. The lifting column 210 in the state of moving toward the wellhead can rotate through the contact between the reversing key 211 and the first wall 2311; a clamping corner 2313 is formed at one end of the second wall 2312. The lifting column 210 in the state of moving toward the bottom of the well can be stopped and fixed through the clamping between the reversing key 211 and the clamping corner 2313 to limit the rotation angle of the lifting column 210.

[0091] The window drilling integrated steering device provided by the present invention, by subdividing the steering wall 231 into a first wall 2311 close to the wellhead and a second wall 2312 close to the well bottom, can be respectively set when the lifting column 210 is lifted, the movement or stop generated by the abutment of the reversing key 211 and the first wall 2311, and the movement or stop generated by the abutment of the reversing key 211 and the second wall 2312 when the lifting column 210 is lowered, so that the steering or stopping in the lifting and lowering process can be more accurately achieved, so that the ground personnel only need to pull or lower the lifting column 210 through the oil pipe to achieve the effect of rotation and stopping.

[0092] Specifically in this embodiment, refer to Figure 5 As shown, by lifting the lifting column 210, the reversing key 211 of the lifting column 210 abuts against the first wall 2311 and rotates. After the lifting column 210 rotates by the phase angle between the window hole 130 and the drilling hole 140, the lifting column 210 is lowered to make the drilling hole 140 opposite to the working area, and the reversing key 211 of the lifting column 210 is engaged with the clamping corner 2313 of the second wall 2312 to stop and fix it, so as to avoid the circumferential rotation of the lifting column 210 during the drilling operation, that is, to avoid the problem of positioning deviation of the integrated mechanism 100 during the drilling process; when the reversing key 211 is engaged with the clamping corner 2313 of the second wall 2312, the drilling hole 140 of the integrated mechanism 100 is opposite to the working area.

[0093] like Figure 6 and Figure 7 As shown, in one specific embodiment,

[0094] The second wall 2312 is inclined along the circumference of the lifting column 210 toward the axial direction F of the lifting column 210 and toward the bottom of the well. The lifting column 210 in the state of moving toward the bottom of the well can rotate through the contact between the reversing key 211 and the second wall 2312. The clamping corner 2313 is formed at one end of the second wall 2312 close to the bottom of the well.

[0095] A section of the second wall 2312 close to the wellhead overlaps with a section of the first wall 2311 close to the wellhead in the circumferential direction of the lifting column 210 .

[0096] The integrated steering device for window drilling provided by the present invention is capable of rotating the reversing key 211 of the lifting column 210 by abutting against the second wall 2312. When the reversing key 211 of the lifting column 210 moves along the first wall 2311 and drives the lifting column 210 to rotate a certain angle, the lifting column 210 can be lowered, and the reversing key 211 of the lifting column 210 abuts against the second wall 2312 and continues to move along the second wall 2312, thereby driving the lifting column 210 to continue to rotate the remaining angle, so as to increase the error redundancy of the ground personnel in the lifting and lowering process. That is, it avoids the problem that the lifting column 210 cannot be clamped in the clamping corner 2313 when the reversing key 211 of the lifting column 210 has not moved completely along the first wall 2311 and the lifting column 210 has not rotated to the phase angle between the window hole 130 and the drilling hole 140, that is, it avoids the problem of circumferential rotation of the lifting column 210 during the drilling operation and the problem of positioning deviation of the integrated mechanism 100 during the drilling process.

[0097] In a specific embodiment, the first wall 2311 is inclined along the circumference of the lifting column 210 toward the axial direction F of the lifting column 210 and close to the wellhead, and the second wall 2312 is inclined along the circumference of the lifting column 210 toward the axial direction F of the lifting column 210 and close to the bottom of the well. The clamping corner 2313 is formed at the end of the second wall 2312 away from the first wall 2311, that is, the clamping corner 2313 is formed at the end of the second wall 2312 close to the bottom of the well. By lifting the lifting column 210, the reversing key 211 can be abutted against the first wall 2311 and moved along the first wall 2311. The wall 2311 moves, and by lowering the lifting column 210, the reversing key 211 can be brought into contact with the second wall 2312 and continue to move along the second wall 2312. In a specific embodiment, the reversing key 211 moves along the first wall 2311 and the second wall 2312, thereby driving the lifting column 210 to rotate to a phase angle between the window hole 130 and the drilling hole 140. Then, the reversing key 211 is engaged with the engaging corner 2313 of the second wall 2312 to stop and fix it, thereby preventing the lifting column 210 from rotating circumferentially during drilling operations. In this embodiment, when the window hole 130 of the integrated mechanism 100 is opposite to the working area, the lifting column 210 is lifted up so that the lifting column 210 abuts against the first wall 2311, and the lifting column 210 continues to be lifted up, and the reversing key 211 moves along the first wall 2311 to a section of the first wall 2311 close to the wellhead, and by lowering the lifting column 210, the reversing key 211 abuts against the second wall 2312 and moves along the second wall 2312 to be engaged with the engaging corner 2313 of the second wall 2312, and then the drilling hole 140 of the integrated mechanism 100 is opposite to the working area, thereby realizing the switching between the window opening and drilling modes.

[0098] like Figure 6 and Figure 7 As shown, in one specific embodiment,

[0099] A limited angle portion 2314 is formed at one end of the first wall 2311 close to the wellhead. The lifting column 210 in the state of moving toward the wellhead can stop rotating by the engagement between the reversing key 211 and the limited angle portion 2314. The limited angle portion 2314 overlaps with the middle portion of the second wall 2312 in the circumferential direction of the lifting column 210.

[0100] The integrated window drilling steering device provided by the present invention is provided with a limit angle 2314, which is used to limit the distance that the reversing key 211 can move along the first wall 2311, so as to prevent the ground operator from lifting the lifting column 210 for a long time, resulting in the rotation angle of the lifting column 210 exceeding the phase angle between the window hole 130 and the drilling hole 140. In other words, it is avoided that when the lifting column 210 is lowered after the rotation angle exceeds the phase angle, the lifting column 210 cannot be clamped in the clamping angle 2313, that is, it is avoided that the lifting column 210 rotates circumferentially during the drilling operation and the integrated mechanism 100 has a positioning deviation during the drilling process.

[0101] In a specific embodiment, the first wall 2311 is inclined along the circumference of the lifting column 210 toward the axial direction F of the lifting column 210 and close to the wellhead, and the second wall 2312 is inclined along the circumference of the lifting column 210 toward the axial direction F of the lifting column 210 and close to the bottom of the well. The clamping corner 2313 is formed at the end of the second wall 2312 away from the first wall 2311, that is, the clamping corner 2313 is formed at the end of the second wall 2312 close to the bottom of the well, and the limiting corner 2314 is formed at the end of the first wall 2311 away from the second wall 2312, that is, the limiting corner 2314 is formed at the end of the first wall 2311 close to the wellhead. By lifting the lifting column 210, the reversing key 211 can be abutted against the first wall 2311. The lifting column 210 is then moved along the first wall 2311, and the lifting column 210 is continuously lifted up, so that the lifting column 210 moves to the limit corner 2314, and then the lifting column 210 is lowered, so that the reversing key 211 abuts against the second wall 2312 and moves along the second wall 2312, and the lifting column 210 is continuously lowered, so that the lifting column 210 moves to the engaging corner 2313; in this embodiment, the reversing key 211 moves along the first wall 2311 and the second wall 2312, and then drives the lifting column 210 to rotate the phase angle between the window hole 130 and the drilling hole 140, and then the reversing key 211 is engaged with the engaging corner 2313 of the second wall 2312 to achieve stop and fixation, so as to avoid circumferential rotation of the lifting column 210 during drilling operations.

[0102] like Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, in one specific embodiment,

[0103] The turning track 230 has a plurality of turning walls 231 , and the plurality of turning walls 231 are connected end to end along the turning track 230 .

[0104] The window opening and drilling integrated steering device provided by the present invention is provided with a plurality of steering walls 231, that is, the operator can realize the rotation of the integrated mechanism 100 on the ground from the window opening hole 130 and the working area to the drilling hole 140 and the working area by lifting and lowering operations. At the same time, the lifting and lowering operations are continued to make the integrated mechanism 100 rotate one circle relative to the drilling hole 140 and the working area and then return to the window opening hole 130 and the working area. That is, the lifting and lowering operations can realize the switching of the integrated mechanism 100 between the two modes, and realize the completion of the window opening operation and the drilling operation at multiple predetermined positions at one time, thereby reducing the number of drilling and lowering times and improving the efficiency of the side drilling radial well operation.

[0105] In a specific embodiment of the present invention, the phase angle between the window hole 130 and the drilling hole 140 is 90°, that is, during the lifting and lowering process, after completing one lifting and lowering, the integrated mechanism 100 rotates 90°, and the steering track 230 has four steering walls 231 connected along the circumference of the lifting column 210. By completing four lifting and lowering, the integrated mechanism 100 can rotate 360°, so that the integrated mechanism 100 rotates until the window hole 130 is opposite to the working area again; in other embodiments, the size of the phase angle between the window hole 130 and the drilling hole 140 and the number of steering walls 231 are set accordingly, and can be set accordingly according to different construction scenes, without specific restrictions; in this embodiment, four symmetrically arranged reversing keys 211 are protruding radially outward from the peripheral wall of the self-lifting column 210. In other embodiments, a corresponding number of reversing keys 211 can be set according to the number of steering walls 231.

[0106] like Figure 6 and Figure 7 As shown, in one specific embodiment,

[0107] The steering assembly 220 includes an upper steering tube 221 and a lower steering tube 222 which are arranged along the axial direction F of the lifting column 210.

[0108] The lifting column 210 is movably arranged in the upper steering tube 221 and the lower steering tube 222, and the lower end of the upper steering tube 221 and the upper end of the lower steering tube 222 are divided to form a steering track 230, wherein a plurality of first walls 2311 are formed at the lower end of the upper steering tube 221 along the circumference of the lifting column 210, and a plurality of second walls 2312 are formed at the upper end of the lower steering tube 222 along the circumference of the lifting column 210.

[0109] Specifically in this embodiment, the upper steering tube 221 is a tube column with a special bottom wall, and the lower steering tube 222 is a tube column with a special top wall. The upper steering tube 221 is fixedly connected to a conventional working tube column, wherein the first wall 2311 is the bottom wall of the upper steering tube 221, and the second wall 2312 is the top wall of the lower steering tube 222, and the reversing key 211 is embedded between the upper steering tube 221 and the lower steering tube 222; in this embodiment, a plurality of O-rings 500 are provided on the upper outer wall of the lifting column 210, and the lifting column 210 is rotatably sealed and connected to the upper steering tube 221 through the sealing ring 500 to prevent impurities from entering between the lifting column 210 and the upper steering tube 221, and the bottom of the lifting column 210 is connected to the clamp 100A of the integrated mechanism 100 through a buckle structure.

[0110] like Figures 1 to 4 As shown, in one specific embodiment,

[0111] The steering assembly 220 further includes a sleeve 223 , through which the upper steering tube 221 and the lower steering tube 222 are sealed and connected, and the sleeve 223 is sleeved on the outer side of the lower end of the upper steering tube 221 and the outer side of the upper end of the lower steering tube 222 .

[0112] Related References Fig.21 and Fig. 22 As shown, in the window drilling integrated steering device provided by the present invention, the casing 223 is the outer shell of the upper steering tube 221 and the lower steering tube 222, that is, the outer shell of the steering track 230, which is used to protect the steering assembly 220, prevent fine sand and debris from entering the upper steering tube 221, the lower steering tube 222, and the steering track 230 during operation, and prevent the reversing key 211 from getting stuck.

[0113] Specifically in this embodiment, the outer diameter of the lifting column 210 is equivalent to the inner diameter of the upper steering tube 221 and the inner diameter of the lower steering tube 222. During assembly, a plurality of sealing rings 500 are first installed on the outer side of the upper part of the lifting column 210, and then the lifting column 210 is installed inside the upper steering tube 221, and the reversing key 211 of the lifting column 210 is installed in the reversing track between the upper steering tube 221 and the lower steering tube 222. By installing the sleeve, the upper steering tube 221 and the lower steering tube 222 are connected into a whole, and the lifting column 210 is limited by the reversing key 211 of the lifting column 210 to form a steering mechanism 200.

[0114] like Figures 9 to 11 , Fig.16 As shown, in one specific embodiment,

[0115] A first channel 150 and a second channel 160 are provided side by side at the top of the integrated mechanism 100. The first channel 150 is connected to the window channel 120, and the second channel 160 is connected to the drilling channel 110. A guide member 300 is also provided on the top of the integrated mechanism 100. The guide member 300 has an inclined surface 310 inclined toward the second channel 160. A ball seat 161 is provided in the second channel 160, and a blocking ball guided by the inclined surface 310 can be blocked on the ball seat 161.

[0116] The present invention can block the second channel 160 by setting a guide member 300 and using a sealing ball in cooperation, so that in the window opening mode, the pressure liquid of the window opening does not enter the drilling channel 110. In the drilling mode, the sealing ball is backwashed to the ground by backwashing and the pressure liquid is injected again. Since the drilling hole 140 is opposite to the area where the window opening has been completed, and the window opening hole 130 is opposite to the external area where the window opening has not been completed, the pressure liquid will enter the drilling channel 110, thereby achieving the purpose of controlling the mode switching of the downhole device on the well, thereby improving the convenience and efficiency of the overall device.

[0117] Related References Figures 8 to 11 As shown, specifically in this embodiment, the clamp 100A is provided with a first channel 150 and a second channel 160 side by side. One end of the first channel 150 opens at the top of the clamp 100A, and the other end of the first channel 150 opens at the top of the open cavity 110A; one end of the second channel 160 opens at the top of the clamp 100A, and the other end of the second channel 160 opens at the top of the open cavity 110A, wherein the upper end of the window track is open for communicating with the first channel 150 of the clamp 100A. The diverter 100B also includes a drilling track inside, which is an arc-shaped track, the upper end of which can be connected to the second channel 160 of the clamp 100A, and the lower end of the drilling track can be connected to the drilling hole 140.

[0118] For details, please refer to Fig.16 As shown, the guide member 300 is generally square, and its narrow sides are arc-shaped. The guide member 300 is located in the open cavity 110A at the upper part of the clamp 100A, and an inclined slope 310 is formed inside. The inclination direction of the slope 310 is toward the second channel 160 of the clamp 100A, that is, the second channel 160 at the top of the integrated mechanism 100, so as to guide the blocking ball to roll toward the second channel 160.

[0119] In this embodiment, a ball seat 161 is provided in the second channel 160. The ball seat 161 has a channel for allowing drilling pipelines, liquids and gases to pass through, and the ball seat 161 is used to place a sealing ball. In this embodiment, when the sealing ball falls onto the ball seat 161, pressure is applied from the ground, and the upper opening of the second channel 160 is subjected to pressure. Under the action of pressure, the sealing ball can form a sealed state with the second channel 160.

[0120] like Fig. 9 and Fig.16 As shown, in one specific embodiment,

[0121] The guide member 300 is pressed above the first channel 150 , and a guide channel 320 is also opened on the inclined surface 310 . The guide channel 320 is connected to the first channel 150 . When the blocking ball is blocked on the ball seat 161 , the guide channel 320 can guide the pressure liquid to flow from the first channel 150 to the window channel 120 .

[0122] The integrated window drilling steering device provided by the present invention has an axial guide channel 320 formed on the inclined surface 310 of the guide member 300, one end of the guide channel 320 is opened on the inclined surface 310, and the other end of the guide channel 320 is connected to the first channel 150 of the clamp 100A; the opening size of the guide channel 320 is smaller than the diameter size of the blocking ball to prevent the blocking ball from falling into the guide channel 320.

[0123] like Figures 1 to 4 , Figures 17 to 20 As shown, in one specific embodiment,

[0124] A connecting portion 170 and a connecting rod 180 are formed at the bottom of the integrated mechanism 100. The connecting rod 180 extends along the axial direction F of the lifting column 210. One end of the connecting rod 180 is passed through the inner cavity of the connecting portion 170, and the other end of the connecting rod 180 passes through the connecting portion 170 and is connected to the lower oil pipe. A rotating bearing 190 is provided at one end of the connecting rod 180 that passes through the inner cavity of the connecting portion 170, and the connecting rod 180 is rotatably connected to the inner wall of the connecting portion 170 through the rotating bearing 190.

[0125] The integrated steering device for window drilling provided by the present invention, through the rotating bearing 190 and the connecting rod 180, enables the torque transmitted from the steering assembly 220 to the integrated mechanism 100 to be offset by the rotating bearing 190 when it is transmitted to the connecting part 170, that is, the lower oil pipe connected to the connecting rod 180 remains stationary, thereby maintaining the structural stability of the integrated steering device for window drilling.

[0126] Specifically in this embodiment, the connecting part 170 is generally a cylindrical sleeve 223, and a step and a stepped cavity are formed in the connecting part 170. In this embodiment, the connecting rod 180 is generally a cylinder, and the top of the connecting rod 180 is provided with a portion protruding along its own radial direction, which is used to interlock with the rotating bearing 190 and the step of the connecting part 170, wherein the rotating bearing 190 is arranged between the protrusion of the connecting rod 180 and the step of the connecting part 170, so that the connecting rod 180 can rotate along the circumference of the lifting column 210.

[0127] In order to more clearly reveal the specific motion switching process of the window opening and drilling integrated steering device provided by the present invention during the complete underground operation, the window opening operation and the drilling operation, the following will be described in detail with reference to the figure:

[0128] When performing the window opening operation, the integrated window opening and drilling steering device of the present invention is installed on the oil pipe, and the integrated window opening and drilling steering device is lowered to the target layer through the oil pipe. The orientation is adjusted, and the window hole 130 is aligned with the position where the window is required in the casing 223. A sealing ball is dropped through the ground, and the sealing ball enters the inclined surface 310 of the guide member 300 and the second channel 160 in sequence, and finally falls on the ball seat 161.

[0129] like Figures 1 to 4 As shown, water is injected into the lifting column 210 from the ground to pressurize the sealing ball and the second channel 160 to form a closed state. At this time, as the water injection continues, the window channel 120 of the integrated mechanism 100 is connected to the window hole 130, and the preparation work for the window opening operation is completed. When the window opening operation is performed, abrasives are injected from the oil pipe from the ground, and the abrasives enter the window channel 120 through the guide channel 320 of the fixing part, and are ejected from the window hole 130 in the form of a rotating abrasive jet through the drill bit mechanism to complete the window opening operation at the target position of the casing 223.

[0130] When the window opening operation is completed, the ground water injection and pressurization are stopped, and the lifting column 210 is lifted up, so that the reversing key 211 abuts against the first wall 2311 and moves along the first wall 2311, and the lifting column 210 is continuously lifted up to move the lifting column 210 to the limiting corner 2314, and then the lifting column 210 is lowered to make the reversing key 211 abut against the second wall 2312 and move along the second wall 2312, and the lifting column 210 is continuously lowered to move the lifting column 210 to the clamping corner 2313, driving the lifting column 210 to rotate the phase angle between the window opening hole 130 and the drilling hole 140, so that the drilling hole 140 is aligned with the target position of the casing 223, and it can be used to implement the drilling operation. Prior to this, backwashing is performed by injecting liquid into the annulus between the oil pipe and the casing 223. The fluid enters the interior of the window drilling integrated steering device from the drilling hole 140, and moves upward along the complete drilling operation channel to return the sealing ball to the ground.

[0131] During drilling operations, the drilling tool is lowered from the ground, passes through the second channel and the drilling channel, that is, the drilling tool passes through so that the drilling tool completes the turn in the drilling channel, reaches the target position corresponding to the casing window, performs drilling operations, and completes the entire drilling operation process.

[0132] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A window-opening and drilling integrated steering device, characterized in that: include: An integrated mechanism, wherein a drilling channel and a window channel are provided independently of each other, window holes and drilling holes are provided at intervals along the circumference of the integrated mechanism, the drilling channel is connected to the drilling hole, and the window channel is connected to the window hole; A steering mechanism, comprising a lifting column and a steering assembly, wherein the lifting column is movably inserted into the steering assembly, wherein the steering assembly has a steering track, wherein the steering track is arranged along the circumference of the lifting column, wherein the lifting column is provided with a reversing key protruding radially outwardly thereof, wherein the reversing key is movably embedded in the steering track, wherein the steering track has a reversing wall inclined along the circumference of the lifting column toward the axial direction of the lifting column, wherein the lifting column can rotate or stop being fixed by the contact between the reversing key and the reversing wall, wherein the lifting column is connected to the top of the integrated mechanism, and is used to drive the integrated mechanism to move or rotate synchronously; Wherein, when the window opening and drilling integrated steering device is in the window opening operation state, the window opening hole is opposite to the operation area; When the window opening and drilling integrated steering device is in a drilling operation state, the integrated mechanism can be rotated through the steering mechanism until the drilling hole is opposite to the working area.

2. The window opening and drilling integrated steering device according to claim 1, characterized in that: The turning wall comprises a first wall and a second wall which are opposite to each other along the axial direction of the lifting column, wherein the first wall is located on a side close to the wellhead, and the second wall is located on a side close to the well bottom; The first wall is inclined along the circumference of the lifting column toward the axial direction of the lifting column and close to the wellhead, and the lifting column in a state of moving toward the wellhead can rotate through the contact between the reversing key and the first wall; a clamping angle is formed at one end of the second wall, and the lifting column in a state of moving toward the bottom of the well can be stopped and fixed through the clamping of the reversing key and the clamping angle to limit the rotation angle of the lifting column.

3. The window opening and drilling integrated steering device according to claim 2, characterized in that: The second wall is inclined along the circumference of the lifting column toward the axial direction of the lifting column and toward the bottom of the well. The lifting column in a state of moving toward the bottom of the well can rotate through the contact between the reversing key and the second wall. The clamping corner is formed at one end of the second wall close to the bottom of the well. Wherein, a section of the second wall close to the wellhead overlaps with a section of the first wall close to the wellhead in the circumferential direction of the lifting column.

4. The window opening and drilling integrated steering device according to claim 2 or 3, characterized in that: A limited angle portion is formed at one end of the first wall close to the wellhead, and the lifting column in a state of moving toward the wellhead can stop rotating by the engagement between the reversing key and the limited angle portion, and the limited angle portion overlaps with the middle portion of the second wall in the circumferential direction of the lifting column.

5. The window opening and drilling integrated steering device according to claim 4, characterized in that: The turning track has a plurality of turning walls, and the plurality of turning walls are connected end to end along the turning track.

6. The window opening and drilling integrated steering device according to claim 5, characterized in that: The steering assembly includes an upper steering tube and a lower steering tube which are arranged along the axial direction of the lifting column. The lifting column is movably inserted into the upper steering tube and the lower steering tube, and the lower end of the upper steering tube and the upper end of the lower steering tube are divided to form the steering track, wherein a plurality of the first walls are connected end to end along the circumference of the lifting column and formed at the lower end of the upper steering tube, and a plurality of the second walls are connected end to end along the circumference of the lifting column and formed at the upper end of the lower steering tube.

7. The window opening and drilling integrated steering device according to claim 6, characterized in that: The steering assembly further comprises a sleeve, through which the upper steering tube and the lower steering tube are sealed and connected, and the sleeve is sleeved on the outer side of the lower end of the upper steering tube and the outer side of the upper end of the lower steering tube.

8. The window opening and drilling integrated steering device according to claim 1, characterized in that: A first channel and a second channel are provided side by side at the top of the integrated mechanism, the first channel is connected to the window channel, and the second channel is connected to the drilling channel. A guide is also provided on the top of the integrated mechanism, and the guide has an inclined surface inclined toward the second channel. A ball seat is provided in the second channel, and a blocking ball guided by the inclined surface can be blocked on the ball seat.

9. The window opening and drilling integrated steering device according to claim 8, characterized in that: The guide member is pressed above the first channel, and a guide channel is also opened on the inclined surface. The guide channel is connected to the first channel. When the blocking ball is blocked on the ball seat, the guide channel can guide the pressure liquid to flow from the first channel to the window channel.

10. The window opening and drilling integrated steering device according to claim 1, characterized in that: A connecting part and a connecting rod are formed at the bottom of the integrated mechanism. The connecting rod is extended along the axial direction of the lifting column. One end of the connecting rod is passed through the inner cavity of the connecting part, and the other end of the connecting rod passes through the connecting part and is connected to the lower oil pipe. A rotating bearing is provided at one end of the connecting rod passing through the inner cavity of the connecting part, and the connecting rod is rotatably connected to the inner wall of the connecting part through the rotating bearing.

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