Timing setting whipstock

Abstract

The invention provides a timed setting whipstock which is applied to an underground casing pipe and at least comprises an inclination guiding part and a setting part which are arranged up and down and connected, the inclination guiding part and the setting part form a structure with a hollow cavity, and a driving part which is boosted by underground liquid to drive the setting part to expand in the radial direction to be meshed with the casing pipe is packaged in the hollow cavity; the controller is used for controlling the driving piece to start and stop regularly. The timed setting whipstock is suitable for setting and unsetting in underground window sidetrack drilling operation, accurate setting is achieved in a ground real-time or underground timed setting mode, underground liquid is adopted as driving force during setting, namely, the underground liquid pushes to drive a setting part to expand in the radial direction to be meshed with a casing pipe, the deeper the tripping-in depth is, the larger the fluid pressure is, and therefore the setting effect is achieved. And the setting effect is stronger, so that mistaken setting can be effectively avoided.

Description

Technical Field

[0001] The invention belongs to the field of oil and gas field drilling equipment, and in particular relates to a timed setting whipstock. Background Art

[0002] In the process of window side drilling of old wells in oil and gas fields, it is necessary to set the whipstock at the window position of the casing to facilitate window side drilling. In order to improve efficiency, it is the best choice to realize the lowering, setting, opening and repairing of the whipstock in one drilling trip. At present, the whipstock with this function adopts a reversing groove structure, which is set by lifting and lowering. However, in the normal process of lowering the drill string, it is inevitable to lift and lower the drill string to remove the jam and resistance. Therefore, it is very easy to set the seal by mistake, resulting in damage to the slip, which is not conducive to secondary setting. In addition, with the influence of well inclination and well depth, the shear pins connecting the milling cone on the upper part of the whipstock are less and less sensitive to drilling pressure and wear resistance, which makes it difficult for the driller to judge whether the whipstock is set and whether the shear pins are cut on the drilling platform, which can easily cause great difficulties.

[0003] The Chinese patent with publication number CN216043526U discloses a timed setting whipstock, which uses gunpowder for setting. The gunpowder combustion helps the lower slip seat to move upward, and the lower slip seat pushes the slips upward along the upper slope of the upper slip seat. At the same time, the slips extend radially and bite into the inner wall of the casing to achieve setting. However, using gunpowder as a booster has the following risks:

[0004] (1) The success rate of using gunpowder as a propulsion force is not high.

[0005] (2) After each use, the setting tool needs to be disassembled and re-maintained and refilled with gunpowder, which requires high operating skills and is cumbersome. Summary of the invention

[0006] The object of the present invention is to provide a timed setting whipstock to overcome the above technical defects.

[0007] In order to solve the above technical problems, the present invention provides a timed setting whipstock, which is applied to downhole casing and at least comprises a guiding part and a setting part arranged and connected up and down, which form a structure with a hollow cavity, and a driving member is encapsulated in the hollow cavity, which is propelled by downhole liquid to drive the setting part to expand radially and bite the casing;

[0008] It also includes a controller for controlling the timing start and stop of the driving member.

[0009] The setting part includes a cylinder and an incline arranged up and down with a spacing, and a plurality of slips are arranged between the two, one end of the slip is connected to the incline, and the other end is attached to the cylinder;

[0010] When downhole liquid enters the barrel and the controller commands to open the driving member, the slips move upward along the outer wall of the barrel to allow all the slips to expand radially and bite the casing.

[0011] The interior of the cylinder is divided into a hollow cavity section and a solid column section. The solid column section is provided with a through hole for the piston rod to pass through and a liquid infusion channel for guiding the downhole liquid into the hollow cavity section.

[0012] A cylinder is provided in a space formed by the hollow cavity section of the cylinder body and the hollow cavity of the inclined guide portion. Downhole liquid stored in the hollow cavity section drives a piston rod to push a piston installed at the top end of the piston rod to move inside the cylinder.

[0013] The bottom end of the piston rod is connected to the guide bevel;

[0014] When the piston rod moves upward, the piston rod drives the slips to move upward.

[0015] A spring is arranged between each slip and the guide, one end of the spring is connected to the slip, and the other end is connected to the guide.

[0016] The lower end of the cylinder is sealed and inserted into the hollow cavity of the barrel, and the piston divides the inner cavity of the cylinder into a rod cavity and a rodless cavity. The downhole liquid from the hollow cavity of the barrel is stored in the rod cavity to change the fluid pressure of the rod cavity and push the piston to move.

[0017] A plurality of fixing pins are arranged in the rod cavity, one end of each fixing pin is embedded in the cylinder wall of the cylinder, and the other end abuts against the piston rod.

[0018] The piston rod and the piston constitute a driving member, and the driving member also includes a timing switch valve. Downhole liquid from the hollow cavity of the cylinder body is connected to the first valve port of the timing switch valve through the first fluid pipeline, and the second valve port of the timing switch valve is connected to the rod cavity of the cylinder barrel through the second fluid pipeline.

[0019] The downhole liquid that enters the hollow cavity of the barrel through the infusion channel flows through the first fluid pipeline and the second fluid pipeline in sequence and then flows into the rod cavity of the cylinder. As the pressure difference between the inside and outside of the rod cavity gradually increases, the fixing pin loosens and detaches from the piston rod, and the piston drives the piston rod to move upward. The piston rod is stretched upward to drive the guide to move upward, and the slip itself expands radially to bite the casing while moving upward.

[0020] The controller includes an uphole part and a downhole part, wherein the uphole part is a PLC, and the downhole part includes a gyroscope and a battery pack installed in a hollow cavity of the guide bevel part;

[0021] The gyroscope is used to detect the rotation angle of the timed setting whipstock and send it to the PLC in the uphole part. The PLC in the uphole part sends a switch command to the timed switch valve to open or close the timed switch valve.

[0022] or,

[0023] The preset specified time causes the current from the battery pack to the timing switch valve to increase instantaneously, and the timing switch valve is opened or closed.

[0024] A signal receiving amplifier is installed on the guide bevel part, and the signal receiving amplifier surrounds the alignment gyroscope and / or the timing switch valve.

[0025] The beneficial effects of the present invention are as follows:

[0026] The timed setting whipstock is suitable for setting and unsealing in downhole window opening and side drilling operations. It achieves precise setting by real-time ground setting or timed setting in downhole. Downhole liquid is used as the driving force during setting, that is, the downhole liquid pushes the setting part to expand the diameter radially and engage the casing. The deeper the depth of the setting, the greater the fluid pressure and the stronger the setting effect, which can effectively avoid incorrect setting.

[0027] In order to make the above contents of the present invention more clearly understood, preferred embodiments are given below and described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of the timed setting whipstock.

[0029] Figure 2 It is a cross-sectional view of the timed setting whipstock.

[0030] Figure 3 It is a partial internal schematic diagram of the timed setting whipstock.

[0031] Figure 4 This is a partial enlarged view of the rod cavity.

[0032] Figure 5 This is the assembly drawing of the slips and the guide.

[0033] Figure 6 It is the layout diagram of the timing switch valve.

[0034] Figure 7 This is an assembly drawing of the fixing pin and piston rod.

[0035] Description of reference numerals:

[0036] 10. Guide inclined part;

[0037] 20. Sealing part; 21. Cylinder; 211. Piston rod; 212. Cylinder; 213. Infusion channel; 214. Piston; 22. Guide; 23. Slip; 24. Spring; 25. Rotating pin; 26. Fixed pin; 27. Timing switch valve; 271. First fluid pipeline; 272. Second fluid pipeline; 273. Fluid switch valve; 274. Solenoid control valve; 275. Control valve core;

[0038] 31. Gyroscope; 32. Battery pack;

[0039] 40.Signal receiving amplifier. DETAILED DESCRIPTION

[0040] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0041] It should be noted that, in the present invention, the up, down, left and right in the figure are deemed to be the up, down, left and right of the timed setting whipstock described in this specification.

[0042] The exemplary embodiments of the present invention are now described with reference to the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely and to fully convey the scope of the present invention to those skilled in the art. The terms used in the exemplary embodiments shown in the accompanying drawings are not intended to limit the present invention. In the accompanying drawings, the same units / elements are marked with the same reference numerals.

[0043] Unless otherwise specified, the terms (including technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it is understood that the terms defined in commonly used dictionaries should be understood to have the same meanings as those in the context of the relevant fields, and should not be understood as idealized or overly formal meanings.

[0044] This embodiment involves a timed setting whipstock, which is applied to downhole casing. Figure 1 , at least includes a guiding part 10 and a sealing part 20 arranged and connected up and down, the two forming a structure with a hollow cavity, in which is enclosed a driving member which is propelled by the downhole liquid to drive the sealing part 20 to expand radially and engage the casing.

[0045] Compared with the traditional method of using gunpowder as the driving force, this embodiment uses downhole liquid as the driving force. The deeper the descent depth, the greater the fluid pressure, the stronger the sealing effect, and it is not affected by the well inclination and well depth. It can achieve precise sealing and effectively avoid incorrect sealing.

[0046] In order to achieve real-time sealing on the ground or timed sealing underground, the timed sealing bevel device also includes a controller for controlling the timing start and stop of the driving component. The controller sends instructions to the underground to allow the underground liquid to enter the sealing part 20, and uses the fluid pressure of the underground liquid to drive the sealing part 20 to radially expand and bite the casing.

[0047] The structure of the guide portion 10 can refer to Figure 1 and Figure 2The inclined surface of the outer surface is used to guide the side drilling pipe, and a keyway is provided on the outer surface near the top, which is used to connect the side drilling pipe; the lower half of the inner part of the inclined guide part 10 is hollow, which is equivalent to a blind hole and is used to place the drive and controller.

[0048] See also Figure 2 The sealing part 20 includes a cylinder 21 and an inclined guide 22 which are arranged up and down with a spacing therebetween, and a plurality of slips 23 (arranged around with equal spacing) are provided between the two. One end of the slip 23 is connected to the inclined guide 22, and the other end is attached to the cylinder 21.

[0049] Specifically, the cylinder 21 is composed of an upper cylinder and a lower cylinder connected by threads, wherein the top outer wall of the upper cylinder is connected to the bottom inner wall of the guide bevel portion 10 by threads, so that the guide bevel portion 10, the upper cylinder and the lower cylinder together form a cylindrical structure.

[0050] When downhole liquid enters the barrel 21 and the controller commands to open the driving member, the slips 23 move upward along the outer wall of the barrel 21 so that all the slips 23 expand radially and bite the casing.

[0051] The interior of the cylinder 21 is divided into a hollow cavity section (i.e., the upper cylinder) and a solid column section (i.e., the lower cylinder). The solid column section is provided with a through hole for the piston rod 211 to pass through and an infusion channel 213 for guiding the downhole liquid into the hollow cavity section. The downhole liquid enters the upper cylinder through the infusion channel 213, and the downhole liquid is stored in the upper cylinder.

[0052] A diversion square hole is provided in the lower cylinder of the solid column section as a liquid infusion channel 213, which mainly plays a diversion role.

[0053] Continue reading Figure 2 A cylinder 212 is provided in the space formed by the hollow cavity section of the cylinder body 21 and the hollow cavity of the inclined guide part 10. The upper cylinder body and the cylinder 212 are connected by threads. The downhole liquid stored in the hollow cavity section drives the piston rod 211 to push the piston 214 installed on the top of the piston rod to move inside the cylinder 212.

[0054] It should be noted here that the cylinder 212 is composed of two parts of the cylinder body screwed together, and the upper part serves as the gas pump chamber. The gas pump chamber is a cylinder with one end closed and the other end open. The open end faces downward, and the open end is connected to the lower part of the cylinder 212 through a sealed external thread.

[0055] The bottom end of the piston rod 211 is connected to the guide bevel 22, that is, the lower section of the piston rod 211 is exposed and can directly contact the downhole liquid, while the middle section passes through the lower cylinder body, and the upper section is inserted into the cylinder 212, and a piston 214 is installed at the top of the piston rod 211. When the piston 214 drives the piston rod 211 to move upward, the piston rod 211 drives the cava 23 to move upward, thereby realizing the sealing.

[0056] like Figure 2 and Figure 5 As shown, a spring 24 is provided between each slip 23 and the guide ramp 22 , one end of the spring 24 is connected to the slip 23 , and the other end is connected to the guide ramp 22 . The function of the spring 24 is to limit and fix the movement of the slip 23 .

[0057] It should be noted that the bottom end of the cava 23 is installed on the guide bevel 22 through a rotating pin 25. The bottom of the cava 23 can rotate toward the periphery through the rotating pin 25. Initially, the cava 23 is stretched and fixed in a vertical position by a fixed spring 24. At this time, the upper part of the cava 23 is close to the outer surface of the lower cylinder.

[0058] Continue reading Figure 2 The lower end of the cylinder 212 is sealed and inserted into the hollow cavity of the cylinder body 21, and the piston 214 divides the inner cavity of the cylinder 212 into a rod cavity and a rodless cavity. The downhole liquid from the hollow cavity of the cylinder body 21 is stored in the rod cavity to change the fluid pressure of the rod cavity and push the piston 214 to move.

[0059] The piston 214 is tightly fitted in the cylinder 212 via an O-ring.

[0060] Reference Figure 7 A plurality of fixing pins 26 are arranged in the rod cavity ( Figure 7 One end of each fixing pin 26 is embedded in the wall of the cylinder 212 , and the other end is abutted against the piston rod 211 . The wall of the piston rod 211 is provided with three grooves for accommodating the ends of the fixing pins 26 .

[0061] See also Figure 4 Three holes are opened in the wall of the rod cavity for placing the fixing pins 26, and two annular grooves are opened in the inner wall of each hole to place O-rings respectively. The fixing pin 26 passes through the O-ring and fits tightly with the hole on the rod cavity. The hole is a through hole, and the center line of the hole is perpendicular to the axial center line of the piston rod 211.

[0062] Continue reading Figure 7 The main body of the fixing pin 26 is composed of two sections of cylinders with different outer diameters. The end of the cylinder with a larger inner diameter of the fixing pin 26 is a cone, which is placed in the groove of the rod wall of the piston rod 211. It should be noted that the top cone of the fixing pin 26 cannot completely enter the interior of the piston rod 211, and the lateral projection area of ​​the exposed part of the cone must be larger than the cross-section of the cylinder with a smaller inner diameter of the fixing pin 26.

[0063] like Figure 2 As shown, the piston rod 211 and the piston 214 constitute a driving member, and the driving member also includes a timing switch valve 27, see Figure 6The downhole liquid from the hollow cavity of the barrel 21 is connected to the first valve port of the timing switch valve 27 through the first fluid pipeline 271, and the second valve port of the timing switch valve 27 is connected to the rod cavity of the cylinder 212 through the second fluid pipeline 272.

[0064] The downhole liquid enters the hollow cavity of the barrel 21 through the infusion channel 213, flows through the first fluid pipeline 271 and the second fluid pipeline 272 in sequence, and then flows into the rod cavity of the cylinder 212. As the pressure difference between the inside and outside of the rod cavity gradually increases, the fixing pin 26 loosens and disengages from the piston rod 211, and the piston 214 drives the piston rod 211 to move upward. The piston rod 211 stretches upward and drives the guide 22 to move upward. The slip 23 itself expands radially to bite the casing while moving upward to achieve sealing.

[0065] See also Figure 3 Specifically, the timing switch valve 27 includes a fluid switch valve 273, an electromagnetic control valve 274, and a control valve core 275. The fluid switch valve 273 is connected to the electromagnetic control valve 274 through a thread. The control valve core 275 passes through the electromagnetic control valve 274 and the fluid switch valve 273. The second fluid pipeline 272 connects the rod cavity and the fluid switch valve 273. The first fluid pipeline 271 connects the fluid switch valve 273 and the hollow cavity of the cylinder 21.

[0066] One end of the first fluid pipeline 271 is connected to a sealed external thread joint, and the other end is connected to a side middle inlet of the fluid switch valve 273 through a sealing thread.

[0067] One end of the second fluid pipeline 272 is connected to a sealed external threaded joint, the sealed external threaded joint is inserted into the rod cavity, and the other end is connected to the lower outlet of the fluid switch valve 273.

[0068] The main body of the fluid switch valve 273 is a torus with circular holes through the center, and its structure is similar to a tee. The bottom of the fluid switch valve 273 is provided with a sealed external thread, and the fluid switch valve 273 is connected to the upper cylinder through the sealed external thread at the bottom; the top of the fluid switch valve 273 is provided with a sealed internal thread hole, and the fluid switch valve 273 is connected to the electromagnetic control valve 274 through the top internal thread; the inner wall of the central through hole of the fluid switch valve 273 is provided with two grooves for placing O-rings; the outer middle position of the fluid switch valve 273 is connected to the first fluid pipeline 271 through a sealed internal thread; the through circular hole in the center of the fluid switch valve 273 is tightly matched with the lower part of the control valve core 275.

[0069] The electromagnetic control valve 274 is an electromagnetic switch, and the middle part of the electromagnetic control valve 274 is the control valve core 275; the electromagnetic control valve 274 has a timer and a wireless receiver inside, and the bottom of the electromagnetic control valve 274 is connected to the upper part of the fluid switch valve 273 through a sealed external thread.

[0070] The controller includes an uphole part and a downhole part, wherein the uphole part is a PLC, and the downhole part includes a gyroscope 31 and a battery pack 32 installed in the hollow cavity of the guide bevel part 10 , and the battery pack 32 is connected to the electromagnetic control valve 274 .

[0071] The battery pack 32 is annular in shape and is embedded in the annular space formed by the hollow cavity of the cylinder barrel 212 and the inclined guide portion 10, that is, it is arranged around the gas pump cavity.

[0072] The gyroscope 31 is fixed on the top of the gas pump chamber. The gyroscope 31 includes a signal transmitter. Therefore, the gyroscope 31 is used to detect the rotation angle of the timed sealing bevel and send it to the PLC in the uphole part. The PLC in the uphole part sends a switch command to the timed switch valve 27 to open or close the timed switch valve 27, thereby realizing real-time control of the sealing on the ground.

[0073] Alternatively, a specified time is preset to instantaneously increase the current flowing from the battery pack 32 to the timing switch valve 27, and the timing switch valve 27 is opened or closed. That is, when the specified time is reached, the solenoid control valve 274 triggers the circuit to be connected, and the battery pack 32 increases the current flowing to the solenoid control valve 274, and lifts the control valve core 275 to a position that can ensure that the fluid switch valve 273 is opened.

[0074] See also Figure 2 A signal receiving amplifier 40 is installed on the guide part 10. The signal receiving amplifier 40 is installed on the guide part 10 through a sealing thread. The signal receiving amplifier 40 surrounds the gyroscope 31 and / or the timing switch valve 27 (specifically, the electromagnetic control valve 274). The signal receiving amplifier 40 is used to receive and amplify the wireless signal on the well, and transmit it to the gyroscope 31 and the electromagnetic control valve 274 respectively.

[0075] When in use, it is necessary to assemble the timed setting whipstock first, and then set the seal. The following will explain these two states in detail.

[0076] The assembly process of the timed setting whipstock is as follows:

[0077] (1) First, install each O-ring and fixing pin 26 in the cylinder 212, then slowly pass the piston rod 211 through the rod cavity of the cylinder 212, screw the piston 214 with the O-ring installed onto the piston rod 211, and then slowly pull it down to the bottom of the cylinder 212.

[0078] (2) Align the fixing pin 26 with the designated position of the piston rod 211 and push the fixing pin 26 from the outside to the inside to fix the piston rod 211.

[0079] (3) Install the threaded sealing joint, the first fluid pipeline 271, and the second fluid pipeline 272 in the space formed by the hollow cavity section of the cylinder 21 and the hollow cavity of the guide bevel portion 10, and then slowly insert the bottom of the upper cylinder from the upper part of the cylinder 212. After it is completely inserted, rotate the cylinder 212 and the piston 214 and piston rod 211 assembly to ensure that the upper cylinder is tightly threaded with the cylinder 212, and then connect the second fluid pipeline 272 to the cylinder 212.

[0080] (4) The fluid switch valve 273 is connected to the upper cylinder and the first fluid pipeline 271, and then the electromagnetic control valve 274 and the control valve core 275 are connected to the fluid switch valve 273, and then the lower cylinder passes through the piston rod 211 and is connected to the upper cylinder.

[0081] (5) Then, connect the gas pump chamber to the lower half of the first fluid pipeline 271, put the battery pack 32 on the upper part of the gas pump chamber and fix it to the upper end of the cylinder 212, and at the same time connect the battery pack 32 to the electromagnetic control valve 274, and then fix the gyroscope 31 on the upper part of the gas pump chamber.

[0082] (6) Screw the signal receiving amplifier 40 into the shell of the guide bevel part 10, then connect the shell of the guide bevel part 10 with the upper cylinder, then insert the lower cylinder into the piston rod 211 and connect it with the upper cylinder, then use the rotating pin 25 and the rotating pin nut to fix the cava 23 around the guide bevel 22, then connect the guide bevel 22 with the piston rod 211, and then install the spring 24 to fix the cava 23 in the vertical direction, and at the same time, make the cava 23 close to the outside of the lower cylinder.

[0083] The setting process of the timed setting whipstock is as follows:

[0084] ⅰ. Use the electromagnetic control valve 274 for timing in advance, then use the corresponding pipe string to lower the assembled timed setting whipstock into the specified position underground, rotate the timed setting whipstock to the specified position, and the gyroscope 31 transmits the signal through the signal receiving amplifier 40. Then, use the controller on the well to transmit the signal to the signal receiving amplifier 40, and then transmit it to the electromagnetic control valve 274.

[0085] ⅱ. Or after the specified time is reached, the current from the battery pack 32 to the electromagnetic control valve 274 increases rapidly, the electromagnetic control valve 274 lifts the control valve core 275, opens the fluid switch valve 273, and the downhole high-pressure fluid flows from the upper cylinder through the threaded sealing joint, the first fluid pipeline 271, the fluid switch valve 273, the second fluid pipeline 272 to the rod chamber of the piston pump.

[0086] ⅲ. As the fluid pressure in the rod chamber of the piston pump gradually increases, the fixed pin 26 loses contact with the piston rod 211 due to the difference in internal and external forces. The high-pressure fluid entering the rod chamber of the piston pump pushes the piston 214 to move upward, and at the same time drives the piston rod 211 to move upward. The piston rod 211 is stretched upward, driving the guide bevel 22 to move upward. The cava 23 is guided by the outer wall of the lower cylinder, so that the cava 23 itself expands outward while moving upward. When the cava 23 contacts the well wall, the piston 214 stops moving upward, and the timed sealing bevel device completes the sealing.

[0087] Finally, it should be noted that: those skilled in the art can understand that the above-mentioned embodiments are specific examples for realizing the present invention, and in actual applications, various changes can be made in form and details without departing from the spirit and scope of the present invention.

Claims

1. A timed setting whipstock, applied to downhole casing, comprising at least a guiding part (10) and a setting part (20) arranged and connected up and down, the two forming a structure with a hollow cavity, characterized in that: A driving member is enclosed in the hollow cavity and is propelled by downhole liquid to drive the setting portion (20) to expand in radial direction and engage the casing; It also includes a controller for controlling the timing start and stop of the driving member.

2. The timed setting whipstock according to claim 1, characterized in that: The setting part (20) comprises a cylinder (21) and an inclination (22) arranged vertically and spaced apart from each other, a plurality of slips (23) are arranged between the two, one end of the slips (23) is connected to the inclination (22), and the other end is in contact with the cylinder (21); When the downhole liquid enters the barrel (21) and the controller commands the drive member to be turned on, the slips (23) move upward along the outer wall of the barrel (21) so that all the slips (23) radially expand and engage the casing.

3. The timed setting whipstock according to claim 2, characterized in that: The interior of the cylinder (21) is divided into a hollow cavity section and a solid column section, and the solid column section is provided with a through hole for the piston rod (211) to pass through and a liquid infusion channel (213) for guiding downhole liquid into the hollow cavity section; A cylinder barrel (212) is provided in a space formed by the hollow cavity section of the cylinder body (21) and the hollow cavity of the inclined guide portion (10); downhole liquid stored in the hollow cavity section drives the piston rod (211) to push a piston (214) installed at the top end of the piston rod to move inside the cylinder barrel (212); The bottom end of the piston rod (211) is connected to the guide bevel (22); When the piston rod (211) moves upward, the piston rod (211) drives the slip (23) to move upward.

4. The timed setting whipstock according to claim 2 or 3, characterized in that: A spring (24) is provided between each of the slips (23) and the guide bevel (22); one end of the spring (24) is connected to the slip (23), and the other end is connected to the guide bevel (22).

5. The timed setting whipstock according to claim 3, characterized in that: The lower end of the cylinder (212) is sealed and inserted into the hollow cavity of the barrel (21), and the piston (214) divides the inner cavity of the cylinder (212) into a rod cavity and a rodless cavity. The downhole liquid from the hollow cavity of the barrel (21) is stored in the rod cavity to change the fluid pressure of the rod cavity and push the piston (214) to move.

6. The timed setting whipstock according to claim 5, characterized in that: A plurality of fixing pins (26) are arranged in the rod cavity, one end of each fixing pin (26) is embedded in the wall of the cylinder (212), and the other end abuts against the piston rod (211).

7. The timed setting whipstock according to claim 6, characterized in that: The piston rod (211) and the piston (214) form the driving member, and the driving member also includes a timing switch valve (27), the downhole liquid from the hollow cavity of the cylinder (21) is connected to the first valve port of the timing switch valve (27) through a first fluid pipeline (271), and the second valve port of the timing switch valve (27) is connected to the rod cavity of the cylinder (212) through a second fluid pipeline (272); The downhole liquid enters the hollow cavity of the barrel (21) through the infusion channel (213), flows through the first fluid pipeline (271) and the second fluid pipeline (272) in sequence, and then flows into the rod cavity of the cylinder (212). As the pressure difference between the inside and outside of the rod cavity gradually increases, the fixing pin (26) loosens and disengages from the piston rod (211), and the piston (214) drives the piston rod (211) to move upward. The piston rod (211) stretches upward and drives the guide (22) to move upward. The slip (23) itself expands radially to engage the casing while moving upward.

8. The timed setting whipstock according to claim 7, characterized in that: The controller comprises an uphole part and a downhole part, wherein the uphole part is a PLC, and the downhole part comprises a gyroscope (31) and a battery pack (32) installed in a hollow cavity of the deflection guide part (10); The gyroscope (31) is used to detect the rotation angle of the timed setting whipstock and send it to the PLC of the uphole part, and the PLC of the uphole part sends a switch command to the timed switch valve (27) to open or close the timed switch valve (27); or, A preset designated time causes the current flowing from the battery pack (32) to the timing switch valve (27) to increase instantaneously, and the timing switch valve (27) is opened or closed.

9. The timed setting whipstock according to claim 8, characterized in that: A signal receiving amplifier (40) is installed on the inclined guide portion (10), and the signal receiving amplifier (40) is aligned around the gyroscope (31) and / or the timing switch valve (27).

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