An underground high-energy hydraulic jet roller whipstock and its usage method

Abstract

The present invention discloses a downhole high-energy hydraulic jet roller whipstock and its usage method, which relates to the technical field of downhole equipment in oil fields. It includes a whipstock barrel. The whipstock barrel is of a vertical cylindrical structure, and an axial arc-shaped whipstock channel is arranged inside the whipstock barrel. The inlet of the whipstock channel is located at the upper end of the whipstock barrel, and the outlet is located on the lower side wall of the whipstock barrel. A number of roller bearings are arranged on both sides of the whipstock channel. During use, a high-pressure nozzle enters from the upper end of the whipstock barrel and passes downward through the whipstock channel. The whipstock channel applies a bending moment to the high-pressure nozzle to cause it to undergo plastic deformation along the whipstock channel. Subsequently, the high-pressure nozzle performs high-pressure hydraulic jetting on the casing and rock formation at a certain build angle. After completing the hydraulic jetting drilling in one direction, the rotary wellhead is rotated to drive the roller whipstock to turn to the next direction for multi-directional hydraulic jetting. This device can apply a bending moment to the high-pressure nozzle to cause it to undergo plastic deformation, achieving the purpose of ultra-short radius drilling of a hard pipe hydraulic jetting branch well.

Description

Technical Field

[0001] The present invention relates to the technical field of downhole equipment in oil fields, and particularly relates to a downhole high-energy hydraulic jet roller whipstock and a using method thereof. Background Art

[0002] At present, with the development of oil production and drilling technologies, the horizontal well technology has advantages such as small floor area, long distance connecting underground reservoirs, and large oil production swept area, but the cost is too high. Therefore, the horizontal well technology is applicable to conditions such as high reserves, tight surface land use, and high-yield wells. In addition, in the middle and late stages of oil well exploitation, on the basis of vertical wells, the sidetracked multilateral well technology can also be used to achieve the purpose of expanding the underground drainage radius, thereby increasing production capacity. However, the investment for a single branch is still relatively high.

[0003] Chinese Patent CN202020784640.7 discloses a whipstock, which includes a central pipe and a whipstock body sleeved inside and outside. The whipstock body contains a guiding inclined surface. The lower end of the whipstock body is sequentially connected with a hydraulic slip fixing mechanism and a guiding head. The hydraulic slip fixing mechanism contains an axial channel, and a drain hole is arranged at the lower part of the guiding head. The liquid in the central pipe can pass through the axial channel and then be discharged from the drain hole. After the whipstock is set in the well, it can only provide a fixed working direction for sidetracking and cannot adjust the direction arbitrarily. Moreover, it cannot be taken out after the operation. During construction, the drilling speed needs to be slowed down, the construction period is long, and the investment is relatively high.

[0004] Chinese Patent CN200820219672.1 discloses a slip-anchored whipstock, which is composed of a leak-proof device, steel balls, piston fixing pins, lower slips, a locking sleeve, a central pipe, a running-in pipe, a running-in joint, a centralizer, an inclined rail, upper slips, a hydraulic cylinder, and a piston. The leak-proof device is installed at the front end of the slip-anchored whipstock. The steel balls are installed in the steel ball seats at the front end of the whipstock. The lower slips and the locking sleeve are both sleeved outside the central pipe. The running-in pipe is connected with the central pipe by reverse threads. The running-in joint is connected with the running-in pipe by threads. The centralizer is connected with the running-in pipe by threads or welding. One end of the inclined rail is provided with an inclined surface, and the other end is integrated with the whipstock. The upper slips are installed outside the whipstock and fixed with screws. The hydraulic cylinder is installed in the hydraulic cylinder groove outside the whipstock and fixed with bolts. The piston is fixed on the whipstock with piston fixing pins. When this whipstock is used, it also needs to be set. After setting, the drill string needs to be run in again for casing windowing. Its operation is relatively complex, and it also does not have the function of adjusting the direction. During construction, the drilling speed also needs to be slowed down, the construction period is long, and the construction cost is relatively high.

[0005] Chinese Patent CN202110253559.5 discloses a device for directional multi-branch hydraulic jetting in oil wells and its usage method, which relates to the technical field of oil well stimulation. It includes surface tools, downhole tools, and jetting tools. The surface tools include a wellhead four-way head, a rotating wellhead, a wellhead three-way, and a high-pressure seal arranged coaxially in sequence. The downhole tools include a casing, a high-pressure pipe string, a downhole sealing assembly, and a guide shoe. The jetting tools include a continuous sucker rod, a flow-through device, and an equal-diameter pipe fixedly connected in sequence from top to bottom. The equal-diameter pipe is a flexible pipe and is provided with a nozzle at the lower end. This device uses the rotating wellhead to perform multi-branch operations one by one, uses the guide shoe to facilitate downhole orientation, and finally uses high-pressure water on the ground to perform hydraulic jetting through the nozzle. When the jetting depth requirement is reached, the continuous sucker rod is lifted to pull the nozzle out of the guide shoe. The rotating wellhead is rotated to turn the guide shoe to the next orientation. It uses the rotating wellhead to perform multi-branch operations one by one, uses the guide shoe for downhole orientation, and finally uses high-pressure water on the ground to perform hydraulic jetting through the nozzle. The guide shoe structure in this patented technology is equivalent to a whipstock, but this guide shoe structure cannot effectively achieve the deflecting effect of the high-pressure nozzle, and the guide shoe has no directional obliquity effect, and has a large frictional resistance, which is likely to cause bending damage to the nozzle.

[0006] In summary, the currently used whipstocks mainly include channel whipstocks, packer whipstocks, hydraulic whipstocks, retrievable whipstocks, guide shoes, etc. Although there are differences in principles, the functions of whipstocks in the casing windowing process are the same; that is, to provide a guiding plane for casing windowing and a supporting surface for windowing tools such as milling cones for windowing, and form a lateral force for sidetracking. Such whipstocks need to be set in the wellbore during use to provide a fixed drilling direction for sidetracking, and their directions cannot be adjusted after setting, and multi-branch drilling cannot be carried out. Moreover, the existing whipstocks also have problems of cumbersome working steps and difficult recovery. Summary of the Invention

[0007] The purpose of the present invention is to provide a downhole high-energy hydraulic jetting roller whipstock and its usage method in view of the defects existing in the prior art.

[0008] The technical solution of the present invention is: a downhole high-energy hydraulic jetting roller whipstock, including a whipstock barrel. The whipstock barrel is a vertical cylindrical structure, and an axial arc-shaped deflecting channel is provided inside the whipstock barrel. The inlet of the deflecting channel is located at the upper end of the whipstock barrel, and the outlet is located on the lower side wall of the whipstock barrel. A number of roller bearings are provided on both sides of the deflecting channel.

[0009] Preferably, the deflecting channel is composed of a deflecting body. The deflecting body is strip-shaped, and an installation groove adapted to the deflecting body is provided in the axial direction of the whipstock barrel. The deflecting body is fixedly installed in the installation groove.

[0010] Preferably, the inclined guide is divided into an upper inclined guide and a lower inclined guide. Correspondingly, the inclined guide channel is divided into an upper inclined guide channel and a lower inclined guide channel; the inclined guide cylinder is divided into two sections fixedly connected up and down, namely an upper inclined guide cylinder and a lower inclined guide cylinder; the upper inclined guide is fixedly installed in the upper inclined guide cylinder, and the lower inclined guide is fixedly installed in the lower inclined guide cylinder.

[0011] Preferably, the lower inclined guide is of a split structure and is composed of two lower rail clamping plates; an arc-shaped semi-circular groove inclined to one side is provided on the lower rail clamping plate, and the bottom outlet of the semi-circular groove is located on the side of the lower rail clamping plate. The two lower rail clamping plates are arranged oppositely and fixedly connected, and the semi-circular grooves of the two form a lower inclined guide channel.

[0012] Preferably, the upper inclined guide includes upper rail clamping plates, connecting blocks and a number of roller bearings. The two upper rail clamping plates are arranged oppositely, and the ends thereof are fixedly connected by a number of connecting blocks; a number of the roller bearings are installed in two longitudinal rows between the two upper clamping plates, and the two rows of roller bearings are arranged at equal intervals and jointly form an upper inclined guide channel.

[0013] Preferably, an upper joint is provided at the upper end of the upper inclined guide cylinder, and an inner conical surface facilitating the entry of a high-pressure nozzle is provided in the upper joint.

[0014] Preferably, an arc-shaped annular groove is provided in the middle of the roller bearing, and bearing sleeves are sleeved on the installation ends on both sides; the annular groove is adapted to the inclined guide channel.

[0015] Preferably, the two rows of roller bearings in the upper inclined guide are arranged staggeredly.

[0016] A method for using an underground high-energy hydraulic jetting roller inclinator, characterized by comprising the following steps:

[0017] 1) Install the present roller inclinator at the lower end of a high-pressure oil pipe and lower it into the well through the high-pressure oil pipe;

[0018] 2) Connect the upper end of the high-pressure oil pipe to a rotary wellhead;

[0019] 3) Lower a high-pressure nozzle into the high-pressure oil pipe;

[0020] 4) Orient the high-pressure oil pipe through an underground gyro positioning system, drive the high-pressure oil pipe and the roller inclinator to rotate through the rotary wellhead, determine the accurate orientation of a radial drilling, and make preparations for high-pressure jetting;

[0021] 5) During hydraulic jetting drilling, the high-pressure nozzle enters from the upper end of the inclined guide cylinder and passes downward through the inclined guide channel;

[0022] 6) During the process of the high-pressure nozzle passing through the inclined guide channel, the inclined guide channel applies a bending moment to the high-pressure nozzle to cause it to undergo plastic deformation along the inclined guide channel;

[0023] 7) Subsequently, the high-pressure nozzle jets high-pressure water on the casing and the rock formation at a certain deviation angle;

[0024] 8) After completing the high-pressure water jet drilling in one direction, lift the high-pressure nozzle out of the roller whipstock;

[0025] 9) Repeat steps 4 - 8 to conduct multi-directional high-pressure water jetting; finally, lift out the high-pressure oil pipe to take out this roller whipstock.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] This device can apply a bending moment to the high-pressure nozzle to cause plastic deformation, achieving the purpose of ultra-short radius drilling of high-energy water jet branched wells with hard pipes; the roller design of this whipstock can effectively reduce the friction when the high-pressure nozzle passes through; this whipstock has a straight cylinder structure, is fixedly installed at the lower end of the high-pressure oil pipe below the rotating wellhead when lowering into the well, does not need to be set packer during use, and is convenient and fast to recover; this whipstock is used in combination with the rotating wellhead, can quickly change the well bottom direction, and has high construction efficiency; the upper joint of this device is provided with an inner conical surface for facilitating the entry of the high-pressure nozzle, and this setting can effectively improve the lowering speed of the high-pressure nozzle and enhance the convenience of operation. Brief Description of the Drawings

[0028] Figure 1 is a schematic cross-sectional structure diagram of the present invention;

[0029] Figure 2 is a schematic three-dimensional diagram of the present invention;

[0030] Figure 3 is a schematic exploded structure diagram of the present invention;

[0031] Figure 4 is a schematic structure diagram of the roller bearing.

[0032] In the figure: 1. upper whipstock cylinder, 101. upper joint, 2. lower whipstock cylinder, 3. upper whipstock body, 4. lower whipstock body, 5. upper rail splint, 6. connecting block, 7. roller bearing, 701. annular groove, 8. upper whipstock channel, 9. lower rail splint, 901. arc semi-circular groove, 10. lower whipstock channel, 11. bearing sleeve, 12. installation groove. Detailed Embodiments

[0033] The following further describes the present invention in conjunction with the drawings and embodiments.

[0034] Embodiment 1

[0035] An underground high-energy hydraulic jet roller whipstock, comprising a whipstock barrel. The whipstock barrel is of a vertical cylindrical structure, and an axial arc-shaped whipstock channel is arranged inside the whipstock barrel; the inlet of the whipstock channel is located at the upper end of the whipstock barrel, the outlet is located on the lower side wall of the whipstock barrel, and a number of roller bearings 7 are arranged on both sides of the whipstock channel.

[0036] The using method of this roller whipstock includes the following steps:

[0037] 1) Install this roller whipstock at the lower end of the high-pressure oil pipe and lower it into the well through the high-pressure oil pipe;

[0038] 2) Connect the upper end of the high-pressure oil pipe to the rotary wellhead;

[0039] 3) Lower the high-pressure nozzle into the high-pressure oil pipe;

[0040] 4) The high-pressure oil pipe is oriented through the downhole gyro positioning system. Drive the high-pressure oil pipe and the roller whipstock to rotate through the rotary wellhead to determine the precise orientation of the radial drilling and make preparations for high-pressure jetting;

[0041] 5) During hydraulic jet drilling, the high-pressure nozzle enters from the upper end of the whipstock barrel and passes downward through the whipstock channel;

[0042] 6) During the process of the high-pressure nozzle passing through the whipstock channel, the whipstock channel applies a bending moment to the high-pressure nozzle to cause it to undergo plastic deformation along the whipstock channel;

[0043] 7) Subsequently, the high-pressure nozzle performs high-pressure hydraulic jetting on the casing and rock formation at a certain deviation angle;

[0044] 8) When the hydraulic jet drilling in one direction is completed, lift the high-pressure nozzle out of the roller whipstock;

[0045] 9) Repeat steps 4-8 for multi-directional hydraulic jetting; finally, lift out the high-pressure oil pipe and take out this roller whipstock.

[0046] This device can apply a bending moment to the high-pressure nozzle to cause it to undergo plastic deformation, achieving the purpose of ultra-short radius drilling of a hard pipe high-energy hydraulic jet branch well; the roller design of this whipstock can effectively reduce the friction force when the high-pressure nozzle passes through; this whipstock is of a straight cylinder structure, is fixedly installed at the lower end of the high-pressure oil pipe below the rotary wellhead when lowering into the well, does not require setting packers during use, and is convenient and fast to recover; the outer diameter of this whipstock is smaller than that of the existing whipstock, and the downhole speed is relatively fast; this whipstock is used in combination with the rotary wellhead, can quickly change the downhole orientation, and has high construction efficiency.

[0047] Embodiment 2

[0048] An underground high-energy hydraulic jet roller whipstock, comprising a whipstock barrel. The whipstock barrel is of a vertical cylindrical structure, and an axial arc-shaped whipstock channel is arranged inside the whipstock barrel; the inlet of the whipstock channel is located at the upper end of the whipstock barrel, the outlet is located on the lower side wall of the whipstock barrel, and a number of roller bearings 7 are arranged on both sides of the whipstock channel.

[0049] In this embodiment, the whipstock channel is composed of a whipstock body. The whipstock body is strip-shaped, and an installation groove 12 adapted to the whipstock body is arranged axially on the whipstock barrel. The whipstock body is fixedly installed in the installation groove 12 by bolts.

[0050] The roller whipstock in this embodiment is convenient for assembly, and the whipstock body includes various specifications. Different trajectories of whipstock channels are arranged in different specifications of whipstock bodies, which can be independently selected according to construction requirements; by replacing different specifications of whipstock bodies, the build angle during high-pressure nozzle drilling can be adjusted, so that a branch well with a certain radius can be drilled according to construction requirements.

[0051] Embodiment Three

[0052] Refer to Figures 1-3 As shown, an underground high-energy hydraulic jet roller whipstock, comprising a whipstock barrel. The whipstock barrel is of a vertical cylindrical structure, and an axial arc-shaped whipstock channel is arranged inside the whipstock barrel; the inlet of the whipstock channel is located at the upper end of the whipstock barrel, the outlet is located on the lower side wall of the whipstock barrel, and a number of roller bearings 7 are arranged on both sides of the whipstock channel.

[0053] The whipstock channel is composed of a whipstock body. The whipstock body is strip-shaped, and an installation groove 12 adapted to the whipstock body is arranged axially on the whipstock barrel. The whipstock body is fixedly installed in the installation groove 12 by bolts.

[0054] The whipstock body is divided into an upper whipstock body 3 and a lower whipstock body 4. Correspondingly, the whipstock channel is divided into an upper whipstock channel 8 and a lower whipstock channel 10; the whipstock barrel is divided into two sections fixedly connected up and down, namely an upper whipstock barrel 1 and a lower whipstock barrel 2; the upper whipstock body 3 is fixedly installed in the upper whipstock barrel 1, and the lower whipstock body 4 is fixedly installed in the lower whipstock barrel 2.

[0055] The lower whipstock body 4 is of a split structure and is composed of two lower rail clamping plates 9; an arc-shaped semi-circular groove 901 inclined to one side is arranged on the lower rail clamping plate 9, and the bottom outlet of the semi-circular groove is located on the side of the lower rail clamping plate 9. The two lower rail clamping plates 9 are arranged oppositely and fixedly connected, and the semi-circular grooves of the two form the lower whipstock channel 10.

[0056] The upper whipstock body 3 includes upper rail clamping plates 5, connecting blocks 6 and a number of roller bearings 7. The two upper rail clamping plates 5 are arranged oppositely, and the ends of the two are fixedly connected by a number of connecting blocks 6; a number of roller bearings 7 are installed in two longitudinal columns between the two upper clamping plates, and the two columns of roller bearings 7 are arranged at equal distances and jointly form the upper whipstock channel 8.

[0057] The differences between this embodiment and the second embodiment are as follows: In this embodiment, the inclined guide cylinder and the inclined guide body both adopt a segmented design, and the structures of the upper inclined guide body 3 and the lower inclined guide body 4 are different; the upper inclined guide channel 8 in the upper inclined guide body 3 is composed of two rows of roller bearings 7, and its curvature is small, which mainly plays a conveying role for the high-pressure nozzle during use; the lower inclined guide channel 10 is composed of two opposite arc-shaped semi-circular grooves 901, and its curvature is large. When the high-pressure nozzle passes through, the inner wall of the lower inclined guide channel 10 will apply a bending moment to the high-pressure nozzle to cause plastic deformation, and the roller bearings 7 arranged on both sides of the lower inclined guide channel 10 can reduce the friction generated when the high-pressure nozzle passes through, avoiding damage to the high-pressure nozzle.

[0058] Embodiment Four

[0059] Refer to Figures 1-3 As shown, a downhole high-energy hydraulic jet roller deflector includes an inclined guide cylinder. The inclined guide cylinder is a vertical cylindrical structure, and an axial arc-shaped inclined guide channel is provided inside the inclined guide cylinder; the inlet of the inclined guide channel is located at the upper end of the inclined guide cylinder, the outlet is located on the lower side wall of the inclined guide cylinder, and several roller bearings 7 are provided on both sides of the inclined guide channel.

[0060] The inclined guide channel is composed of an inclined guide body. The inclined guide body is strip-shaped. An installation groove 12 adapted to the inclined guide body is provided axially on the inclined guide cylinder, and the inclined guide body is fixedly installed in the installation groove 12 by bolts.

[0061] The inclined guide body is divided into an upper inclined guide body 3 and a lower inclined guide body 4. Correspondingly, the inclined guide channel is divided into an upper inclined guide channel 8 and a lower inclined guide channel 10; the inclined guide cylinder is divided into two sections fixedly connected up and down, namely an upper inclined guide cylinder 1 and a lower inclined guide cylinder 2; the upper inclined guide body 3 is fixedly installed in the upper inclined guide cylinder 1, and the lower inclined guide body 4 is fixedly installed in the lower inclined guide cylinder 2.

[0062] The lower inclined guide body 4 is a split structure and is composed of two lower rail clamping plates 9; an arc-shaped semi-circular groove 901 inclined to one side is provided on the lower rail clamping plate 9, and the bottom outlet of the semi-circular groove is located on the side of the lower rail clamping plate 9. The two lower rail clamping plates 9 are arranged oppositely and fixedly connected, and their semi-circular grooves form the lower inclined guide channel 10.

[0063] The upper inclined guide body 3 includes upper rail clamping plates 5, connecting blocks 6 and several roller bearings 7. The two upper rail clamping plates 5 are arranged oppositely, and their ends are fixedly connected by multiple connecting blocks 6; several roller bearings 7 are installed in two longitudinal rows between the two upper clamping plates, and the two rows of roller bearings 7 are equidistantly arranged and jointly form the upper inclined guide channel 8.

[0064] In addition, an upper joint 101 is provided at the upper end of the upper inclined guide cylinder 1 of this embodiment, and an inner conical surface facilitating the entry of the high-pressure nozzle is provided inside the upper joint 101; when lowering the high-pressure nozzle into the well, this optimized setting can effectively improve its lowering speed and enhance the convenience of operation.

[0065] Example 5

[0066] Referring to Figures 1-3 As shown, a downhole high-energy hydraulic jet roller whipstock includes a whipstock barrel. The whipstock barrel is a vertical cylindrical structure, and an axial arc-shaped whipstock channel is provided inside the whipstock barrel; the inlet of the whipstock channel is located at the upper end of the whipstock barrel, the outlet is located on the lower side wall of the whipstock barrel, and a number of roller bearings 7 are provided on both sides of the whipstock channel.

[0067] The whipstock channel is composed of a whipstock body. The whipstock body is strip-shaped, and an installation groove 12 adapted to the whipstock body is provided axially on the whipstock barrel. The whipstock body is fixedly installed in the installation groove 12 by bolts.

[0068] The whipstock body is divided into an upper whipstock body 3 and a lower whipstock body 4. Correspondingly, the whipstock channel is divided into an upper whipstock channel 8 and a lower whipstock channel 10; the whipstock barrel is divided into two sections fixedly connected up and down, namely an upper whipstock barrel 1 and a lower whipstock barrel 2; the upper whipstock body 3 is fixedly installed in the upper whipstock barrel 1, and the lower whipstock body 4 is fixedly installed in the lower whipstock barrel 2.

[0069] The lower whipstock body 4 is a split structure, composed of two lower rail clamping plates 9; an arc-shaped semi-circular groove 901 inclined to one side is provided on the lower rail clamping plate 9, the bottom outlet of the semi-circular groove is located on the side of the lower rail clamping plate 9, the two lower rail clamping plates 9 are arranged oppositely and fixedly connected, and the semi-circular grooves of the two form the lower whipstock channel 10.

[0070] The upper whipstock body 3 includes upper rail clamping plates 5, connecting blocks 6 and a number of roller bearings 7. The two upper rail clamping plates 5 are arranged oppositely, and the ends thereof are fixedly connected by a number of connecting blocks 6; a number of roller bearings 7 are installed in two vertical columns between the two upper clamping plates, and the two columns of roller bearings 7 are arranged at equal distances, jointly forming the upper whipstock channel 8.

[0071] More specifically, referring to Figure 4 As shown, an arc-shaped annular groove 701 is provided in the middle of the roller bearing 7, and this annular groove 701 is adapted to the whipstock channel; during use, the annular groove 701 fits with the outer wall of the high-pressure nozzle, increasing the contact area between the roller bearing 7 and the high-pressure nozzle, which helps the lowering of the high-pressure nozzle; further, bearing sleeves 11 are sleeved on the installation ends on both sides of the roller bearing 7, and the bearing sleeves 11 can reduce the friction when the roller bearing 7 rotates.

[0072] In addition, in this embodiment, the two columns of roller bearings 7 in the upper whipstock body 3 are arranged staggeredly; this arrangement ensures that the high-pressure nozzle always remains in contact with the roller bearings 7 during the process of passing through the upper whipstock channel 8, which helps the smooth lowering of the high-pressure nozzle.

[0073] The present invention is not limited to the above-described embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention, and the changed content still falls within the protection scope of the present invention.

Claims

1. A downhole high-energy hydraulic jet roller whipstock, characterized in that: It includes an inclined guide tube which is of a vertical cylindrical structure. An axial arc-shaped inclined guide channel is provided inside the inclined guide tube. The inlet of the inclined guide channel is located at the upper end of the inclined guide tube, and the outlet is located on the lower side wall of the inclined guide tube. A number of roller bearings are provided on both sides of the inclined guide channel. The inclined guide channel is composed of an inclined guide body which is strip-shaped. An installation groove adapted to the inclined guide body is provided axially on the inclined guide tube, and the inclined guide body is fixedly installed in the installation groove. The inclined guide body is divided into an upper inclined guide body and a lower inclined guide body. Correspondingly, the inclined guide channel is divided into an upper inclined guide channel and a lower inclined guide channel. The inclined guide tube is divided into two sections which are fixedly connected up and down, namely an upper inclined guide tube and a lower inclined guide tube. The upper inclined guide body is fixedly installed in the upper inclined guide tube, and the lower inclined guide body is fixedly installed in the lower inclined guide tube. The lower inclined guide body is of a split structure and is composed of two lower rail clamping plates. An arc-shaped semi-circular groove inclined to one side is provided on the lower rail clamping plate. The bottom outlet of the semi-circular groove is located on the side of the lower rail clamping plate. The two lower rail clamping plates are arranged oppositely and fixedly connected, and their semi-circular grooves form the lower inclined guide channel. The upper inclined guide body includes upper rail clamping plates, connecting blocks and a number of roller bearings. The two upper rail clamping plates are arranged oppositely, and their ends are fixedly connected by a number of connecting blocks. A number of the roller bearings are installed in two longitudinal columns between the two upper clamping plates. The two columns of roller bearings are arranged at equal intervals and jointly form the upper inclined guide channel. The two columns of roller bearings in the upper inclined guide body are arranged staggeredly.

2. The downhole high-energy hydraulic jet roller whipstock according to claim 1, characterized in that: An upper joint is provided at the upper end of the upper inclined guide tube, and an inner conical surface facilitating the entry of a high-pressure nozzle is provided inside the upper joint.

3. The downhole high-energy hydraulic jet roller whipstock according to claim 1, characterized in that: An arc-shaped annular groove is provided in the middle of the roller bearing, and bearing sleeves are sleeved on the installation ends on both sides. The annular groove is adapted to the inclined guide channel.

4. A method for using the downhole high-energy hydraulic jet roller whipstock according to any one of claims 1-3, characterized in that It includes the following steps: 1) Install this roller inclined guide on the lower end of the high-pressure oil pipe and lower it into the well through the high-pressure oil pipe. 2) Connect the upper end of the high-pressure oil pipe to the rotary wellhead. 3) Lower the high-pressure nozzle into the high-pressure oil pipe. 4) The high-pressure oil pipe is oriented through the downhole gyro positioning system. Drive the high-pressure oil pipe and the roller inclined guide to rotate through the rotary wellhead to determine the precise orientation of the radial drilling and make preparations for high-pressure jetting. 5) When performing hydraulic jet drilling, the high-pressure nozzle enters from the upper end of the inclined guide tube and passes downward through the inclined guide channel. 6) During the process of the high-pressure nozzle passing through the inclined guide channel, the inclined guide channel applies a bending moment to the high-pressure nozzle to cause it to undergo plastic deformation along the inclined guide channel. 7) Subsequently, the high-pressure nozzle performs high-pressure hydraulic jetting on the casing and the rock formation at a certain deviation angle. 8) When the hydraulic jet drilling in one orientation is completed, lift the high-pressure nozzle out of the roller inclined guide. 9) Repeat steps 4 - 8 to perform multi-orientation hydraulic jetting; finally, lift out the high-pressure oil pipe and take out this roller inclined guide.

Images