Rotary guiding assembly drill collar centering device and installation method and system thereof

Abstract

The invention relates to a rotary guiding assembly drill collar centering device and an installation method and system.The rotary guiding assembly drill collar centering device comprises a base, a guiding mechanism, a first drill collar, a second drill collar and a plurality of supporting bases, and the supporting bases are installed on the base in a sliding mode through the guiding mechanism; the supporting seat is provided with a supporting placing position for supporting and placing the first drill collar or the second drill collar; and the first drill collar and the second drill collar are respectively placed on the independent supporting seats, and are used for approaching each other along the guide direction of the guide mechanism to realize centering connection. According to the centering device for rotary guiding assembly of the drill collars, the first drill collar and the second drill collar are connected in a centering mode through the guiding mechanism, the centering precision of the drill collars can be improved when a rotary guiding short section is assembled, the centering precision is relatively good, and then damage to a sealing face can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of oil and gas drilling, and in particular to a centering device for a rotary steerable assembled drill collar, an installation method and a system thereof. Background Art

[0002] The rotary steerable system is an advanced technical equipment in the field of oil and gas drilling, mainly used for achieving precise guidance and directional drilling during the drilling process. This system can control the direction and trajectory of the drill bit, enabling it to drill according to a preset path, thereby achieving the purposes of increasing the drilling encounter rate, reducing costs, and improving the efficiency of oil and gas exploration and development.

[0003] The rotary steerable system is increasingly widely used in the exploration and development of complex process wells such as extended reach wells, horizontal wells, and highly deviated wells. It has the advantages of fast drilling speed, smooth wellbore, and low drilling cost. Currently, the rotary steerable drilling market is mainly monopolized by several foreign oil service companies. Therefore, major domestic oil companies and research institutions have carried out the research and development of rotary steerable systems.

[0004] However, when assembling the existing rotary steerable sub, the centering error is relatively large, and problems such as damage to the sealing surface are likely to occur. Summary of the Invention

[0005] Based on this, it is necessary to provide a centering device for a rotary steerable assembled drill collar, an installation method and a system thereof, which have relatively good centering accuracy and can avoid or reduce damage to the sealing surface.

[0006] In a first aspect, the present application provides a centering device for a rotary steerable assembled drill collar, including: a base, a guiding mechanism, a first drill collar, a second drill collar, and a plurality of support seats. The plurality of support seats are slidably installed on the base through the guiding mechanism; a support placement position for supporting and placing the first drill collar or the second drill collar is provided on the support seat;

[0007] The first drill collar and the second drill collar are respectively placed on independent support seats, and the first drill collar and the second drill collar are used to approach each other along the guiding direction of the guiding mechanism to achieve centering connection.

[0008] In one embodiment, the guiding mechanism is a guide rail, the guide rail is arranged on the base, and the plurality of support seats are slidably installed on the guide rail.

[0009] In one embodiment, a first vertical plate and a second vertical plate are arranged on the base. The end of the first drill collar away from the second drill collar is connected to the first vertical plate, and the end of the second drill collar away from the first drill collar is movably connected to the second vertical plate.

[0010] In one embodiment, the centering device further includes a pull rod, a first locking plate, and a first central control male socket. One end of the pull rod is installed on the first vertical plate, the other end of the pull rod is connected to the first locking plate, the first central control male socket is installed on the first drill collar, and the first locking plate is in locking cooperation with the first central control male socket.

[0011] In one embodiment, the centering device further includes a thrust bearing, a ball screw, a second locking plate, and a second central control male socket. The thrust bearing is installed on the second vertical plate, the ball screw is connected to the thrust bearing, one end of the ball screw is connected to the second locking plate, the second central control male socket is installed on the second drill collar, and the second locking plate is in locking cooperation with the second central control male socket.

[0012] In one embodiment, the centering device further includes a screw bearing seat, and the thrust bearing is installed on the second vertical plate through the screw bearing seat.

[0013] In one embodiment, the centering device further includes an adapter plate and a double adjustment plate. The support seat is sequentially installed on the guide rail through the double adjustment plate and the adapter plate. The adapter plate is slidably installed on the guide rail, the double adjustment plate is installed on the adapter plate, the support seat is installed on the double adjustment plate, and the double adjustment plate adjusts the height of the support seat through an adjustment bolt.

[0014] In one embodiment, the first drill collar is slidably installed on the guide rail through at least two of the support seats, and / or the second drill collar is slidably installed on the guide rail through at least two support seats.

[0015] In a second aspect, the present application provides a rotary steerable system, including the rotary steerable assembly drill collar centering device described in any of the above embodiments.

[0016] In a third aspect, the present application provides an installation method for the rotary steerable assembly drill collar centering device described in any of the above embodiments, including the following steps:

[0017] Install the guiding mechanism on the base;

[0018] Install a plurality of the support seats on the guiding mechanism;

[0019] Place the first drill collar and the second drill collar on the support seats respectively;

[0020] Make the first drill collar and the second drill collar slide along the guiding mechanism and approach each other to perform centering connection.

[0021] The above-mentioned rotary steerable assembled drill collar centering device can improve the centering accuracy of the drill collar during the assembly of the rotary steerable sub by using the guiding mechanism to center and connect the first drill collar and the second drill collar. The centering accuracy is relatively good, and thus the damage to the sealing surface can be reduced. Since the support seat is provided with a support and placement position for supporting and placing the first drill collar or the second drill collar, it can adapt to different subs and achieve high-precision centering of different subs during the assembly process of the rotary steerable tool, avoiding damage to the sealing surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. is a schematic structural diagram of a rotary steerable assembled drill collar centering device according to an embodiment;

[0023] Figure 2 FIG. is a schematic structural diagram of a rotary steerable assembled drill collar centering device according to an embodiment;

[0024] Figure 3 is Figure 2 an enlarged view of part B of the rotary steerable assembled drill collar centering device shown in FIG.;

[0025] Figure 4 is Figure 2 an enlarged view of part A of the rotary steerable assembled drill collar centering device shown in FIG.;

[0026] Figure 5 is Figure 2 an enlarged view of part C of the rotary steerable assembled drill collar centering device shown in FIG. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] For the convenience of understanding the present application, in order to make the above-mentioned objects, features and advantages of the present application more obvious and understandable, the following will describe the specific embodiments of the present application in detail with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application, and the preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive. The present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined. In the description of the present application, "several" means at least one, such as one, two, etc., unless otherwise specifically defined. It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0028] In a first aspect, the present application provides a rotary steerable assembly drill collar centering device. Please refer to Figure 1, the rotary steerable assembled drill collar centering device includes: a base 100, a guiding mechanism 200, a first drill collar 300, a second drill collar 400 and a plurality of support seats 500. The base 100 provides overall support and installation functions. The plurality of support seats 500 are slidably mounted on the base 100 through the guiding mechanism 200; the guiding mechanism 200 is used to provide a guiding function to facilitate the centering of the first drill collar 300 and the second drill collar 400. Specifically, the guiding mechanism is a linear guide rail, which is not limited thereto, and may also be other guiding mechanisms that provide a preset path or direction. A support and placement position for supporting and placing the first drill collar 300 or the second drill collar 400 is provided on the support seat 500; the first drill collar 300 and the second drill collar 400 are respectively placed on independent support seats 500, and the first drill collar 300 and the second drill collar 400 are used to approach each other along the guiding direction of the guiding mechanism 200 to achieve centering connection. Specifically, the support and placement position of the support seat 500 matches the shape of the corresponding first drill collar 300 or second drill collar 400. For example, the first drill collar 300 is slidably mounted on the guide rail through at least two support seats 500, and / or the second drill collar 400 is slidably mounted on the guide rail through at least two support seats 500.

[0029] For the above rotary steerable assembled drill collar centering device, by using the guiding mechanism 200 to perform centering connection on the first drill collar 300 and the second drill collar 400, the centering accuracy of the drill collar during the assembly of the rotary steerable sub can be improved, and the centering accuracy is relatively good. Furthermore, damage to the sealing surface can be reduced. Since a support and placement position for supporting and placing the first drill collar 300 or the second drill collar 400 is provided on the support seat 500, different subs can be adapted, and high-precision centering of different subs can be achieved during the assembly process of the rotary steerable tool, avoiding damage to the sealing surface.

[0030] In one embodiment, the guiding mechanism 200 is a guide rail 200, the guide rail 200 is arranged on the base 100, and the plurality of support seats 500 are slidably mounted on the guide rail. Specifically, please refer to Figures 1 to 3, the centering device further includes an adapter plate 510 and a double adjustment plate 520. The support seat 500 is sequentially installed on the guide rail 200 through the double adjustment plate 520 and the adapter plate 210. The adapter plate 210 is slidably installed on the guide rail 200. The double adjustment plate 520 is installed on the adapter plate 510, and the support seat 500 is installed on the double adjustment plate 520. The double adjustment plate 520 adjusts the height of the support seat 500 through an adjustment bolt 521. In this way, by providing the adapter plate 510 and the double adjustment plate 520, the support seat 500 can be preferably slidably installed on the guide rail. By providing the double adjustment plate 520, the height of the support seat can also be adjusted as needed, thereby facilitating the adjustment of the heights of the first drill collar 300 and the second drill collar 400 located thereon according to requirements.

[0031] In one embodiment, please refer to Figure 1 , a first vertical plate 600 and a second vertical plate 700 are provided on the base. The end of the first drill collar 300 away from the second drill collar 400 is connected to the first vertical plate 600, and the end of the second drill collar 400 away from the first drill collar 300 is movably connected to the second vertical plate 700. In this way, by adjusting the relative position of the second drill collar 400 relative to the first drill collar 300, it is convenient to achieve the centering of the first drill collar 300 and the second drill collar 400, and different models of drill collars in the rotary steerable sub can also be matched accordingly. In this embodiment, the manner in which the second drill collar 400 is movably connected to the second vertical plate 700 includes, but is not limited to, a slide rail, a slide bar, a lead screw, a motor drive, a cylinder drive, a stud threaded connection, etc.

[0032] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 4 , the centering device further includes a pull rod 610, a first locking plate 620 and a first central control male buckle seat 630. One end of the pull rod 610 is installed on the first vertical plate 600, the other end of the pull rod 610 is connected to the first locking plate 620, the first central control male buckle seat 630 is installed on the first drill collar 300, and the first locking plate 620 is in locking cooperation with the first central control male buckle seat 630. In this way, the quick installation and disassembly of the first drill collar 300 can be preferably achieved. For example, the pull rod is locked to the first vertical plate 600 through a third locking plate.

[0033] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 5, the centering device further includes a thrust bearing 710, a ball screw 720, a second locking plate 730, and a second central control male socket 740. The thrust bearing 710 is installed on the second vertical plate 700. The ball screw 720 is connected to the thrust bearing 710. By rotating the ball screw 720, the ball screw 720 can displace relative to the thrust bearing 710. One end of the ball screw 720 is connected to the second locking plate 730. The second central control male socket 740 is installed on the second drill collar 400. The second locking plate 730 is in locking cooperation with the second central control male socket 740. In this way, the rapid installation and disassembly of the second drill collar 400 can be achieved. By providing the thrust bearing 710 and the ball screw 720, the centering position of the second drill collar 400 and the first drill collar 300 can be conveniently adjusted as needed, and drill collars in different types of rotary steerable subsections can also be matched accordingly. For example, the centering device further includes a lead screw bearing seat 750. The thrust bearing 710 is installed on the second vertical plate through the lead screw bearing seat 750. For example, the centering device further includes a lead screw bearing nut 460. The lead screw bearing nut 460 is screwed onto the lead screw bearing seat 750 to install the lead screw bearing seat 750 on the second vertical plate 700. Specifically, the second vertical plate 700 includes a horizontal plate 7001, a reinforcing plate 7002, and a vertical plate 7003. The horizontal plate 7001 is installed on the base 100. Specifically, the horizontal plate 7001 is installed on the base 100 through fixing screws. The vertical plate 7003 is connected to the horizontal plate 7001. The reinforcing plate 7002 is respectively connected to the horizontal plate 7001 and the vertical plate 7003 to play a role in structural strengthening. Specifically, the horizontal plate 7001, the reinforcing plate 7002, and the vertical plate 7003 have an integrally formed structure. An installation hole 7003a is provided on the vertical plate 7003. The lead screw bearing seat 750 partially passes through the installation hole 7003a and is screwed onto the lead screw bearing seat 750 through the lead screw bearing nut 460 to install the lead screw bearing seat 750 on the second vertical plate 700. For example, the first vertical plate can also adopt a structure similar to that of the second vertical plate. In other words, the first vertical plate can also respectively include a connected horizontal plate, a reinforcing plate, and a vertical plate. For example, an adjustment column 721 is provided at the end of the ball screw 720. The adjustment column 721 facilitates the insertion of a tool for rotation, thereby facilitating the adjustment of the relative position of the ball screw 720 relative to the thrust bearing 710 or the second vertical plate 700, and further facilitating the displacement of the second drill collar 400.

[0034] The above-mentioned rotary steerable assembled drill collar centering device can improve the centering accuracy of the drill collar during the assembly of the rotary steerable sub by using the guiding mechanism 200 to center and connect the first drill collar 300 and the second drill collar 400. The centering accuracy is relatively good, and thus the damage to the sealing surface can be reduced. Since the support seat 500 is provided with a support placement position for supporting and placing the first drill collar 300 or the second drill collar 400, different subs can be adapted, and high-precision centering of different subs can be achieved during the assembly process of the rotary steerable tool, avoiding damage to the sealing surface.

[0035] In a second aspect, the present application provides a rotary steerable system, including the rotary steerable assembled drill collar centering device described in any one of the above embodiments.

[0036] In a third aspect, the present application provides an installation method for the rotary steerable assembled drill collar centering device described in any one of the above embodiments. Please refer to Figures 1 to 5 , which includes the following steps:

[0037] Install the guiding mechanism 200 on the base 100;

[0038] Install a plurality of the support seats 500 on the guiding mechanism 200;

[0039] Place the first drill collar 300 and the second drill collar 400 on the support seats respectively;

[0040] Make the first drill collar 300 and the second drill collar 400 slide along the guiding mechanism 200 and approach each other to center and connect.

[0041] Specifically, the installation method includes the following steps:

[0042] Install 2 vertical plates on both sides of the base 100, namely the first vertical plate 600 and the second vertical plate 700. The first vertical plate 600 and the second vertical plate 700 are respectively fixed to the base 100 by screws. There are 4 adapter plates 510 on the base 100. Connect the adapter plates 510 to the linear guide 200 on the base 100 by screws. The adapter plates 510 can slide on the linear guide 14. Install the double adjustment plate 520 on the adapter plate 510. The double adjustment plate 520 can adjust the height. Install the support seat 500 on the double adjustment plate 520 for supporting the first drill collar 300 and the first drill collar 400 of the rotary steerable tool.

[0043] During the assembly of the rotary steerable tool, first place the first drill collar 300 on the support seat 500, then install the first central control male socket 630 at one end of the first drill collar 300 and lock it with the first locking plate 620. Then install the pull rod 610 and fix the pull rod 610 to the first vertical plate 600 by the third locking plate.

[0044] Then place the second drill collar 400 on the support seat 500. Install the second central control male connection seat 740 at one end of the second drill collar 400 and lock it with the second locking plate 730. Then install the ball screw 720 and fix the ball screw 720 on the second vertical plate 700 with the screw bearing nut 760 and the screw bearing seat 750.

[0045] Through this device and installation method, the first drill collar 300 can be accurately centered with the second drill collar 400. The rotation adjustment column 721 drives the second drill collar 400 to rotate, and the second drill collar 400 can be centered and connected with the first drill collar 300.

[0046] The above-mentioned rotary steering assembly drill collar centering device and method can improve the centering accuracy of the drill collar during the assembly of the rotary steering sub by using the guiding mechanism to center and connect the first drill collar and the second drill collar. The centering accuracy is relatively good, and thus the damage to the sealing surface can be reduced. Since the support seat is provided with a support and placement position for supporting and placing the first drill collar or the second drill collar, it can adapt to different subs and can achieve high-precision centering of different subs during the assembly process of the rotary steering tool, avoiding damage to the sealing surface.

[0047] A high-precision centering device for rotary steering assembly provided by the present application can achieve high-precision centering during the assembly of different subs. The present application can achieve high-precision centering of different subs during the assembly process of the rotary steering tool, avoiding damage to the sealing surface. The present invention is composed of a base, a vertical plate, a screw bearing nut, a screw bearing seat, an adapter plate, a double adjustment plate, a support seat, a central control male connection seat, a locking plate, a pull rod, a ball screw, a thrust bearing, a linear guide rail, etc., and can achieve high-precision centering of different subs during the assembly process of the rotary steering tool, avoiding damage to the sealing surface.

[0048] In the present application, two vertical plates are installed on both sides of the base, and the vertical plates are fixed to the base by screws. There are four adapter plates on the base, and the adapter plates are connected to the linear guide rails on the base by screws, and the adapter plates can slide on the linear guide rails. The double adjustment plate is installed on the adapter plate, and the double adjustment plate can adjust the height. The support seat is installed on the double adjustment plate and is used to support the drill collar of the rotary steering tool. During the assembly of the rotary steering tool, first place the first drill collar on the support seat, then install the first central control male connection seat at one end of the first drill collar and use the first locking plate, then install the pull rod and fix the pull rod on the first vertical plate through the third locking plate. Then place the second drill collar on the support seat, install the second central control male connection seat at one end of the second drill collar and lock it with the second locking plate, then install the ball screw, and fix the ball screw on the second vertical plate with the screw bearing nut and the screw bearing seat. Through this invention, high-precision centering of different subs can be achieved during the assembly process of the rotary steering tool, avoiding damage to the sealing surface.

[0049] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification. It should be noted that phrases such as "in one embodiment of the present application", "for example", "again, for example", etc. are intended to illustrate the present application, rather than to limit the present application.

[0050] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A centering device for a rotary steerable assembled drill collar, characterized in that, it includes: a base, a guiding mechanism, a first drill collar, a second drill collar and a plurality of support seats. The plurality of support seats are slidably mounted on the base through the guiding mechanism; a support and placement position for supporting and placing the first drill collar or the second drill collar is provided on the support seat; the first drill collar and the second drill collar are respectively placed on independent support seats, and the first drill collar and the second drill collar are used to approach each other along the guiding direction of the guiding mechanism to achieve centering connection.

2. The centering device according to claim 1, characterized in that, the guiding mechanism is a guide rail, the guide rail is provided on the base, and the plurality of support seats are slidably mounted on the guide rail.

3. The centering device according to claim 2, characterized in that, a first vertical plate and a second vertical plate are provided on the base. The end of the first drill collar away from the second drill collar is connected to the first vertical plate, and the end of the second drill collar away from the first drill collar is movably connected to the second vertical plate.

4. The centering device according to claim 3, characterized in that, the centering device further includes a pull rod, a first locking plate and a first central control male buckle seat. One end of the pull rod is mounted on the first vertical plate, the other end of the pull rod is connected to the first locking plate, the first central control male buckle seat is mounted on the first drill collar, and the first locking plate is in locking cooperation with the first central control male buckle seat.

5. The centering device according to claim 3, characterized in that, the centering device further includes a thrust bearing, a ball screw, a second locking plate and a second central control male buckle seat. The thrust bearing is mounted on the second vertical plate, the ball screw is connected to the thrust bearing, one end of the ball screw is connected to the second locking plate, the second central control male buckle seat is mounted on the second drill collar, and the second locking plate is in locking cooperation with the second central control male buckle seat.

6. The centering device according to claim 5, characterized in that, the centering device further includes a screw bearing seat, and the thrust bearing is mounted on the second vertical plate through the screw bearing seat.

7. The centering device according to claim 6, characterized in that, the centering device further includes an adapter plate and a double adjustment plate. The support seats are sequentially mounted on the guide rail through the double adjustment plate and the adapter plate. The adapter plate is slidably mounted on the guide rail, the double adjustment plate is mounted on the adapter plate, the support seat is mounted on the double adjustment plate, and the double adjustment plate adjusts the height of the support seat through an adjusting bolt.

8. The centering device according to claim 2, characterized in that, the first drill collar is slidably mounted on the guide rail through at least two support seats, and / or, the second drill collar is slidably mounted on the guide rail through at least two support seats.

9. A rotary steerable system, characterized in that, it includes the rotary steerable assembled drill collar centering device according to any one of claims 1 to 8.

10. An installation method for the rotary steerable assembled drill collar centering device according to any one of claims 1 to 8, characterized in that, it includes the following steps: Install the guiding mechanism on the base; Install a plurality of the support seats on the guiding mechanism; Place the first drill collar and the second drill collar on the support seats respectively; Make the first drill collar and the second drill collar slide along the guiding mechanism and approach each other to perform centering connection.

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