Petroleum drilling and production packer

Abstract

The utility model discloses a petroleum drilling and production packer, and relates to the technical field of packers. The packer comprises a packer body, a clamping assembly is arranged on the surface of the packer body, the packer further comprises a supporting rod used for supporting the clamping assembly, a locking assembly used for controlling the height of the clamping assembly is arranged on the surface of the supporting rod, the right side face of the supporting rod is fixedly connected with an aligning ring, and the aligning ring is fixedly connected with the packer body. The clamping assembly comprises a mounting box, the inner wall of the mounting box is rotationally connected with a double-thread screw, the front end of the double-thread screw penetrates through the front side wall of the mounting box, the front end of the double-thread screw is fixedly connected with a rotary knob, and the surface of the double-thread screw is in threaded connection with a connecting rod; the effect that the packer can be accurately aligned and installed conveniently is achieved in the using process, the center position of the packer can be accurately controlled, the packer can be aligned to a preformed hole in a well, and the installation process is simpler and more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of packers, in particular to a petroleum drilling and production packer. Background Art

[0002] A packer is a downhole tool with elastic sealing elements that can be used to seal the annular space between tubings of various sizes and the wellbore, as well as between tubings, and to isolate the production layer, so as to control the production (injection) of fluid and protect the casing. It is widely used in drilling, cementing, testing, completion and other operations.

[0003] A Chinese patent document with announcement number CN219299255U discloses a support device for an oil drilling packer, which relates to the technical field of packers, and includes a packer body and two lifting frames, with a support frame arranged between the left and right lifting frames, and the packer body is located at the inner center of the support frame. The support frame structure provided in the utility model has a support plate structure connected to a plurality of rotating bar block structures on its circumferential side and an inner end sliding rod. With respect to the above technical scheme, there are the following defects in use: after the above device positions the packer, it is difficult for the center of the packer to coincide with the center of the circular ring, so it is difficult to ensure that the center of the packer is aligned with the reserved hole in the wellbore, which makes it more troublesome to install the packer.

[0004] For this reason, a kind of oil drilling and production packer is proposed. Utility Model Content

[0005] The purpose of the utility model is to solve the problems mentioned in the above background technology, and the utility model provides a petroleum drilling and production packer.

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] A petroleum drilling packer comprises a packer body, a clamping assembly is arranged on the surface of the packer body, and a support rod for supporting the clamping assembly, a locking assembly for controlling the height of the clamping assembly is arranged on the surface of the support rod, and a mark ring is fixedly connected to the right side surface of the support rod.

[0008] Further, the clamping assembly includes an installation box, the inner wall of the installation box is rotatably connected to a double-headed screw, and the front end of the double-headed screw passes through the front side wall of the installation box, the front end of the double-headed screw is fixedly connected to a knob, the surface of the double-headed screw is threadedly connected to a connecting rod, a sliding groove is penetrated through the right side surface of the installation box, and the inner wall of the sliding groove is slidably connected to the surface of the connecting rod, and the end of the connecting rod is fixedly connected to a clamping plate.

[0009] Furthermore, there are two clamping plates, and both clamping plates are arc-shaped structures.

[0010] Furthermore, the locking assembly includes a sliding sleeve, and the sliding sleeve is slidably connected to the support rod, and the sliding sleeve is fixedly connected to the installation box, an insertion rod is movably inserted into the surface of the sliding sleeve, a pull rod is fixedly connected to the left end of the insertion rod, a spring is fixedly connected between the pull rod and the sliding sleeve, a socket is opened on the surface of the support rod, and the inner wall of the socket is movably inserted into the end of the insertion rod.

[0011] Furthermore, the center of the alignment ring is located on the extended line of the axis of the packer body.

[0012] Furthermore, the slide groove is a rectangular through groove, and the specifications of the slide groove are compatible with the connecting rod.

[0013] The beneficial effects of the utility model are as follows:

[0014] The packer body is centered, clamped and fixed by the clamping assembly, so that the axis of the packer body is in line with the axis of the alignment ring, the alignment ring is aligned with the reserved hole in the well, and the limiting effect of the locking assembly is released, so that the clamping assembly and the packer body can move vertically downward, so that the packer body can accurately enter the alignment ring and the reserved hole in the well, thereby installing the packer body. During use, the effect of facilitating accurate alignment and installation of the packer is achieved, and the center position of the packer can be accurately controlled so that the packer can be aligned with the reserved hole in the well, making the installation process simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a top cross-sectional view of the clamping assembly structure of the utility model;

[0017] Figure 3 This is a top view of the locking assembly structure of the utility model;

[0018] Figure 4 It is a side view of the support rod structure of the utility model;

[0019] Figure numerals: 1. Packer body; 2. Clamping assembly; 201. Mounting box; 202. Double-headed screw; 203. Knob; 204. Connecting rod; 205. Slide groove; 206. Clamping plate; 3. Support rod; 4. Locking assembly; 401. Sleeve; 402. Insert rod; 403. Pull rod; 404. Spring; 405. Socket; 5. Alignment ring. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] like Figures 1 to 4 As shown, a petroleum drilling and production packer includes a packer body 1, a clamping assembly 2 is arranged on the surface of the packer body 1, and also includes a support rod 3 for supporting the clamping assembly 2, a locking assembly 4 for controlling the height of the clamping assembly 2 is arranged on the surface of the support rod 3, and a mark ring 5 is fixedly connected to the right side of the support rod 3. More specifically, the packer body 1 is centered, clamped and fixed by the clamping assembly 2, so that the axis of the packer body 1 and the axis of the mark ring 5 are colinear, the mark ring 5 is aligned with the reserved hole in the well, the limiting effect of the locking assembly 4 is released, the clamping assembly 2 and the packer body 1 are moved vertically downward, so that the packer body 1 can accurately enter the mark ring 5 and the reserved hole in the well, and the packer body 1 is installed.

[0025] The clamping assembly 2 includes a mounting box 201, the inner wall of the mounting box 201 is rotatably connected with a double-headed screw 202, and the front end of the double-headed screw 202 passes through the front side wall of the mounting box 201, the front end of the double-headed screw 202 is fixedly connected with a knob 203, the surface of the double-headed screw 202 is threadedly connected with a connecting rod 204, the right side of the mounting box 201 is penetrated with a slide groove 205, and the inner wall of the slide groove 205 is slidably connected with the surface of the connecting rod 204, and the end of the connecting rod 204 is fixedly connected with a clamping plate 206. It should be noted that by rotating the knob 203, the double-headed screw 202 is driven to rotate, and under the action of the thread, the connecting rod 204 will be driven to slide along the inner wall of the slide groove 205, thereby driving the clamping plate 206 to move, so that the clamping plate 206 touches the surface of the packer body 1 to clamp the packer body 1 in the center.

[0026] There are two clamping plates 206, and both clamping plates 206 are arc-shaped structures. More specifically, by providing the clamping plates 206 with arc-shaped structures, the surfaces of the clamping plates 206 are more closely fitted to the packer body 1, thereby making the contact and pressure on the packer body 1 tighter, and avoiding relative sliding between the two.

[0027] The locking assembly 4 includes a sleeve 401, and the sleeve 401 is slidably connected to the support rod 3, and the sleeve 401 is fixedly connected to the installation box 201. The surface of the sleeve 401 is movably plugged with an insertion rod 402, and the left end of the insertion rod 402 is fixedly connected with a pull rod 403. A spring 404 is fixedly connected between the pull rod 403 and the sleeve 401. A socket 405 is opened on the surface of the support rod 3, and the inner wall of the socket 405 is movably plugged with the end of the insertion rod 402. It should be noted that when the packer body 1 is clamped and fixed, the rod 402 is inserted into and maintained on the inner wall of the insertion hole 405 through the elastic force of the spring 404, thereby limiting the sleeve 401, and the clamping assembly 2 and the packer body 1 can be maintained at a fixed height. When the packer body 1 needs to be installed, the pull rod 403 is pulled to drive the rod 402 to move and disengage from the inner wall of the insertion hole 405, and at the same time compress the spring 404 to release the limitation of the sleeve 401, and the sleeve 401 will slide along the surface of the support rod 3, thereby driving the clamping assembly 2 and the packer body 1 to descend, so that the packer body 1 accurately enters the reserved hole.

[0028] The center of the alignment ring 5 is located on the extended line of the axis of the packer body 1. More specifically, the alignment ring 5 is aligned with the reserved hole in the well. When the clamping assembly 2 clamps the packer body 1, the center of the alignment ring 5 is just located on the extended line of the axis of the packer body 1. When the packer body 1 is moved downward, the packer body 1 can smoothly pass through the alignment ring 5, so that the packer body 1 is inserted into the reserved hole to achieve the installation of the packer body 1.

[0029] The slide groove 205 is a rectangular through groove, and the specifications of the slide groove 205 are adapted to the connecting rod 204. It should be noted that by providing a rectangular through groove adapted to the connecting rod 204, the connecting rod 204 is effectively limited to prevent the connecting rod 204 from rotating with the double-headed screw 202, so that the connecting rod 204 can only slide along the inner wall of the slide groove 205.

[0030] In summary: the packer body 1 is centered, clamped and fixed by the clamping assembly 2, so that the axis of the packer body 1 is in line with the axis of the alignment ring 5, the alignment ring 5 is aligned with the reserved hole in the well, and the limiting effect of the locking assembly 4 is released, so that the clamping assembly 2 and the packer body 1 move vertically downward, so that the packer body 1 can accurately enter the alignment ring 5 and the reserved hole in the well, thereby installing the packer body 1. During use, the effect of facilitating accurate positioning and installation of the packer is achieved, and the center position of the packer can be accurately controlled, so that the packer can be centered on the reserved hole in the well, making the installation process simpler and more convenient.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A petroleum drilling packer, characterized in that: The invention comprises a packer body (1), the surface of which is provided with a clamping assembly (2), and a support rod (3) for supporting the clamping assembly (2), the surface of the support rod (3) is provided with a locking assembly (4) for controlling the height of the clamping assembly (2), and the right side surface of the support rod (3) is fixedly connected with a calibration ring (5).

2. The oil drilling packer according to claim 1, characterized in that: The clamping assembly (2) comprises a mounting box (201), the inner wall of the mounting box (201) is rotatably connected to a double-headed screw (202), and the front end of the double-headed screw (202) passes through the front side wall of the mounting box (201), the front end of the double-headed screw (202) is fixedly connected to a knob (203), the surface of the double-headed screw (202) is threadedly connected to a connecting rod (204), a sliding groove (205) is penetrated through the right side surface of the mounting box (201), and the inner wall of the sliding groove (205) is slidably connected to the surface of the connecting rod (204), and the end of the connecting rod (204) is fixedly connected to a clamping plate (206).

3. The oil drilling packer according to claim 2, characterized in that: The number of the clamping plates (206) is two, and both clamping plates (206) are arc-shaped structures.

4. The oil drilling packer according to claim 2, characterized in that: The locking assembly (4) includes a sliding sleeve (401), and the sliding sleeve (401) is slidably connected to the support rod (3), and the sliding sleeve (401) is fixedly connected to the installation box (201), the surface of the sliding sleeve (401) is movably connected with an insertion rod (402), the left end of the insertion rod (402) is fixedly connected with a pull rod (403), a spring (404) is fixedly connected between the pull rod (403) and the sliding sleeve (401), and a hole (405) is opened on the surface of the support rod (3), and the inner wall of the hole (405) is movably connected to the end of the insertion rod (402).

5. The oil drilling packer according to claim 1, characterized in that: The center of the alignment ring (5) is located on the extended line of the axis of the packer body (1).

6. The oil drilling packer according to claim 2, characterized in that: The slide groove (205) is a rectangular through groove, and the specifications of the slide groove (205) are compatible with the connecting rod (204).

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