A sand pump device for deep coal seam gas horizontal well sand bailing

Abstract

The utility model discloses a sand bailing pump device for deep coal seam gas horizontal well sand bailing belongs to sand bailing pump technical field, including arc sand storage pipe, arc sand storage pipe top and bottom respectively fixedly set up with piston cylinder and elastic telescopic pipe, and the other end of elastic telescopic pipe is provided with pen nib in common, and elastic telescopic pipe can reach telescopic effect through telescopic link, and piston cylinder inside swing is provided with piston post, and piston cylinder is provided with sand discharge pipe in common, and the tip of pen nib and sand discharge pipe are provided with first check valve and second check valve respectively, and the second check valve top of sand discharge pipe is provided with filter connector, and the top of piston post and sand discharge pipe top are all installed on the pressure clamp.

Description

Technical Field

[0001] This utility model relates to the field of sand dredging pump technology, specifically to a sand dredging pump device for sand dredging in deep coalbed methane horizontal wells. Background Technology

[0002] A sand removal pump is an industrial device used to remove sand accumulated in oil and gas wells. It is mainly used in well workover operations in the fields of oil and coalbed methane extraction. It is a downhole tool used to remove sand accumulated in the wellbore. It sucks up the sand and brings it to the surface through reciprocating motion. Most deep coalbed methane horizontal wells have an L-shaped structure, that is, a structure with a vertical section first and then a horizontal section. Since the length of each horizontal section of the wellbore is not consistent, it is impossible to determine where the coal sand and other materials are accumulated in the horizontal section. Traditional sand removal pumps are fixed according to the length and height of the wellbore to match the wellbore, but they cannot be adapted to sand removal in wellbores of different lengths, resulting in low flexibility. Utility Model Content

[0003] To address the problem that the inconsistent lengths of each horizontal section of the wellbore make it impossible to determine the location of coal sand accumulation within the horizontal section, traditional sand-dredging pumps, which are fixed according to the length and height of the wellbore to match the wellbore, cannot be adapted to sand-dredging applications with wellbore lengths of different specifications, resulting in low flexibility, this invention provides a sand-dredging pump device for sand dredging in deep coalbed methane horizontal wells.

[0004] A sand-removing pump device for sand removal in deep coalbed methane horizontal wells includes an arc-shaped sand storage pipe. A piston cylinder and an elastic telescopic tube are fixedly installed at the top and bottom of the arc-shaped sand storage pipe, respectively. A pen tip is connected to the other end of the elastic telescopic tube. The elastic telescopic tube can achieve a telescopic function through a telescopic rod. A piston column is movably installed inside the piston cylinder. A sand discharge pipe is connected to the piston cylinder. A first one-way valve and a second one-way valve are respectively installed on the pen tip and the sand discharge pipe. A filter joint is installed above the second one-way valve in the sand discharge pipe. The top of the piston column and the top of the sand discharge pipe are both installed on a clamp.

[0005] Furthermore, it also includes an L-shaped wellbore and an arc-shaped sand storage pipe with an L-shaped structure. Support blocks are fixedly installed on the outer wall of the bottom end of the arc-shaped sand storage pipe and the outer wall of the pen tip. Several rollers are fixedly installed on the bottom wall of the support block of the pen tip. A waterproof motor is installed on the top of the support block on the outer wall of the bottom end of the arc-shaped sand storage pipe through a mounting frame. The telescopic rod is installed on the output end of the waterproof motor, and the telescopic end of the telescopic rod is fixedly connected to the top side wall of the support block of the pen tip.

[0006] Furthermore, the two ends of the elastic telescopic tube are respectively connected to the bottom end of the arc-shaped sand storage tube and the tip of the pen. Several sand inlets are provided through the outer wall of the tip of the pen. The clamp is detachably installed on the top wellhead of the L-shaped well barrel.

[0007] Furthermore, the bottom end of the piston cylinder is connected to the top end of the arc-shaped sand storage pipe, and the top end of the clamp is equipped with a drive cylinder through a mounting bracket. The piston column includes a piston head and a pull rod. The piston head is slidably connected to the inner wall of the piston cylinder. The bottom end of the pull rod is fixedly set on the top wall of the piston head, and the top end of the pull rod passes through the top wall of the piston cylinder and is fixedly connected to the output shaft of the drive cylinder.

[0008] Furthermore, a sand discharge port is provided through the top side wall of the piston cylinder, which is connected to the bottom end of the sand discharge pipe. The filter joint is a double-port joint, and a filter screen is installed inside the filter joint. The top end of the sand discharge pipe is installed on the clamp, and a water pipe joint is fixedly installed at its top end, which can be connected to other water pipes.

[0009] Compared with the prior art, the beneficial effects of this utility model are: according to the length of the horizontal section of the L-shaped wellbore, the pen tip is moved towards the coalbed methane sand pile by the telescopic rod, which drives the elastic telescopic tube to extend, so that the pen tip can get as close as possible to the coalbed methane sand pile for extraction. The first one-way valve and the second one-way valve, together with the piston cylinder and piston column, allow the slurry to be discharged through the sand discharge pipe after filtration. Attached Figure Description

[0010] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a schematic diagram of part A of the structure of this utility model;

[0012] Figure 3 This is a schematic diagram of part B of the structure of this utility model.

[0013] In the diagram: 1. Arc-shaped sand storage pipe; 2. Piston cylinder; 3. Elastic telescopic pipe; 4. Pen tip; 5. Telescopic rod; 6. Piston column; 7. Sand discharge pipe; 8. First one-way valve; 9. Second one-way valve; 10. Filter joint; 11. Pressure collar; 12. L-shaped wellbore; 13. Support block; 14. Roller; 15. Waterproof motor; 16. Sand inlet; 17. Drive cylinder; 18. Piston head; 19. Tie rod; 20. Sand discharge port; 21. Water pipe joint. Detailed Implementation

[0014] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0015] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0016] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0017] Furthermore, some of the aforementioned terms, besides indicating location or positional relationships, may also have other meanings. For example, the term "above" may, in certain circumstances, indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances. Additionally, the term "multiple" should mean two or more.

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The following will refer to the accompanying drawings. Figures 1-3 The present invention will be described in detail with reference to the embodiments.

[0019] A sand-removing pump device for sand removal in deep coalbed methane horizontal wells includes an arc-shaped sand storage pipe 1. A piston cylinder 2 and an elastic telescopic tube 3 are fixedly installed at the top and bottom of the arc-shaped sand storage pipe 1, respectively. A pen tip 4 is connected to the other end of the elastic telescopic tube 3. The elastic telescopic tube 3 can achieve telescopic function through a telescopic rod 5. Support blocks 13 are fixedly installed on the outer wall of the bottom end of the arc-shaped sand storage pipe 1 and the outer wall of the end of the pen tip 4. Several rollers 14 are fixedly installed on the bottom wall of the support block 13 at the end of the pen tip 4. A waterproof motor 15 is installed at the top of the support block 13 on the outer wall of the bottom end of the arc-shaped sand storage pipe 1 through a mounting frame. The telescopic rod 5 is installed on the output end of the waterproof motor 15. The telescopic end of the telescopic rod 5 is fixedly connected to the top side wall of the support block 13 at the end of the pen tip 4.

[0020] It also includes an L-shaped wellbore 12, and the arc-shaped sand storage pipe 1 is also an L-shaped structure. Before the sand pump is put into the L-shaped wellbore 12, the elastic telescopic pipe 3 is compressed. Then the sand pump is put into the L-shaped wellbore 12. When the arc-shaped sand storage pipe 1 contacts the bottom wall of the L-shaped wellbore 12, it stops. The clamp 11 is detachably installed on the top wellhead of the L-shaped wellbore 12. The clamp 11 is installed on the top of the L-shaped wellbore 12.

[0021] An external controller is installed on the device. The waterproof motor 15 is electrically connected to the controller. The controller can control the start and stop of the waterproof motor 15. When the waterproof motor 15 is started, it drives the telescopic rod 5 to extend, which moves the support block 13 at the end of the pen tip 4 forward and closer to the sand pile. At the same time, the elastic telescopic tube 3 also extends. The end of the pen tip 4 is equipped with a first one-way valve 8. When the first one-way valve 8 is opened, since the two ends of the elastic telescopic tube 3 are respectively connected to the bottom end of the arc-shaped sand storage tube 1 and the end of the pen tip 4, and several sand inlets 16 are provided through the outer wall of the tip of the pen tip 4, when the first one-way valve 8 is opened, when the pen tip is close to the sand pile, the piston rod 6 moves upward in the piston cylinder 2. The sand pile enters the pen tip 4 through the several sand inlets 16 and enters the elastic telescopic tube 3 along the first one-way valve 8 and is finally stored in the arc-shaped sand storage tube 1. The first one-way valve 8 is then closed.

[0022] A piston column 6 is movably installed inside the piston cylinder 2, and a sand discharge pipe 7 is connected to the piston cylinder 2. A second one-way valve 9 is installed on the sand discharge pipe 7, and a filter joint 10 is installed above the second one-way valve 9 in the sand discharge pipe 7. The top of the piston column 6 and the top of the sand discharge pipe 7 are both installed on the clamp 11.

[0023] When the second one-way valve 9 is opened, the piston rod 6 moves up and down inside the piston cylinder 2, which can transport the mortar in the arc-shaped sand storage pipe 1 to the sand discharge pipe 7 through reciprocating motion. The top side wall of the piston cylinder 2 is provided with a sand discharge port 20, which is connected to the bottom end of the sand discharge pipe 7. The mortar pumped up enters the sand discharge pipe 7 through the sand discharge port 20, and after passing through the second one-way valve 9, it enters the interior of the filter joint 10. The filter joint 10 is a double-port joint, and both ends can be connected to the ports of the sand discharge pipe 7 respectively. The filter joint 10 is provided with a filter screen inside, which can filter the mortar. The top end of the sand discharge pipe 7 is installed on the clamp 11, and a water pipe joint 21 is fixedly installed on its top end, which can be connected to other water pipes.

[0024] The bottom end of the piston cylinder 2 is connected to the top end of the arc-shaped sand storage pipe 1. The top end of the clamp 11 is equipped with a drive cylinder 17 through a mounting bracket. The piston column 6 includes a piston head 18 and a pull rod 19. The piston head 18 is slidably connected to the inner wall of the piston cylinder 2. The bottom end of the pull rod 19 is fixedly set on the top wall of the piston head 18. The top end of the pull rod 19 passes through the top wall of the piston cylinder 2 and is fixedly connected to the output shaft of the drive cylinder 17.

[0025] The drive cylinder 17 drives the pull rod 19 to move up and down reciprocally, which in turn drives the piston head 18 to move up and down reciprocally inside the piston cylinder 2, thereby driving the mortar to be pumped into the sand discharge pipe 7.

[0026] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sand-removing pump device for sand removal in deep coalbed methane horizontal wells, comprising an arc-shaped sand storage pipe (1), characterized in that: A piston cylinder (2) and an elastic telescopic tube (3) are fixedly installed at the top and bottom of the arc-shaped sand storage pipe (1), respectively. A pen tip (4) is connected to the other end of the elastic telescopic tube (3). The elastic telescopic tube (3) can achieve the telescopic function through the telescopic rod (5). A piston column (6) is movably installed inside the piston cylinder (2). A sand discharge pipe (7) is connected to the piston cylinder (2). A first one-way valve (8) and a second one-way valve (9) are respectively installed on the end of the pen tip (4) and the sand discharge pipe (7). A filter joint (10) is installed above the second one-way valve (9) in the sand discharge pipe (7). The top of the piston column (6) and the top of the sand discharge pipe (7) are both installed on the clamp (11).

2. A sand-removing pump device for sand removal in deep coalbed methane horizontal wells according to claim 1, characterized in that: It also includes an L-shaped wellbore (12), and the arc-shaped sand storage pipe (1) is also an L-shaped structure. The outer wall of the bottom end of the arc-shaped sand storage pipe (1) and the outer wall of the tip (4) are both fixedly provided with support blocks (13). The bottom wall of the support block (13) at the tip (4) is fixedly provided with several rollers (14). The top of the support block (13) at the bottom end of the arc-shaped sand storage pipe (1) is provided with a waterproof motor (15) through a mounting frame. The telescopic rod (5) is set on the output end of the waterproof motor (15). The telescopic end of the telescopic rod (5) is fixedly connected to the top side wall of the support block (13) at the tip (4).

3. A sand-removing pump device for sand removal in deep coalbed methane horizontal wells according to claim 2, characterized in that: The two ends of the elastic telescopic tube (3) are connected to the bottom end of the arc-shaped sand storage tube (1) and the end of the pen tip (4) respectively. Several sand inlets (16) are provided through the outer wall of the pen tip (4). The clamp (11) is detachably installed on the top wellhead of the L-shaped wellbore (12).

4. A sand-removing pump device for sand removal in deep coalbed methane horizontal wells according to claim 3, characterized in that: The bottom end of the piston cylinder (2) is connected to the top end of the arc-shaped sand storage pipe (1). The top end of the clamp (11) is equipped with a drive cylinder (17) through a mounting bracket. The piston column (6) includes a piston head (18) and a pull rod (19). The piston head (18) is slidably connected to the inner wall of the piston cylinder (2). The bottom end of the pull rod (19) is fixedly set on the top wall of the piston head (18). The top end of the pull rod (19) passes through the top wall of the piston cylinder (2) and is fixedly connected to the output shaft of the drive cylinder (17).

5. A sand-removing pump device for sand removal in deep coalbed methane horizontal wells according to claim 4, characterized in that: A sand discharge port (20) is provided through the top side wall of the piston cylinder (2). The sand discharge port (20) is connected to the bottom end of the sand discharge pipe (7). The filter joint (10) is a double-port joint. A filter screen is provided inside the filter joint (10). The top end of the sand discharge pipe (7) is installed on the clamp (11), and a water pipe joint (21) is fixedly provided at its top end, which can be connected to other water pipes.

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