Pressurizing and yield increasing device for natural gas collecting well

Abstract

The pressurization and yield increase device comprises a first natural gas pipeline and a second natural gas pipeline which are obliquely arranged, the first natural gas pipeline is located on the upper side of the second natural gas pipeline, and a plurality of gas holes are formed in the side portion of the first natural gas pipeline and the side portion of the second natural gas pipeline. A fan is arranged at an upper opening of the natural gas pipeline I; the natural gas collecting device has the technical effect of improving the natural gas collecting capacity.

Description

Technical Field

[0001] The present application relates to the technical field of natural gas extraction, and in particular to a natural gas collection well pressure-boosting and production-increasing device. Background Art

[0002] Natural gas refers to all gases that exist naturally in nature, including gases formed by various natural processes in the atmosphere, hydrosphere and lithosphere; at present, domestic natural gas extraction methods include natural pressure alcohol extraction method, natural pressure hydrate inhibitor extraction method, natural pressure heating extraction method, natural pressure extraction method, natural pressure boost extraction method, surface throttling alcohol extraction method, surface throttling hydrate inhibitor extraction method, surface throttling heating extraction method, surface throttling extraction method, surface throttling surface boost extraction method, underground throttling alcohol extraction method, underground throttling hydrate inhibitor extraction method, underground throttling heating extraction method, underground throttling extraction method, underground throttling surface boost extraction method, drainage extraction method, gas extraction method, water extraction method, and all of the above methods have different defects.

[0003] Natural gas pressure boosting is a common technology used in the later stages of oil and gas field development. It aims to improve the efficiency and output of natural gas production by increasing the wellhead pressure. This method is particularly suitable for the later stages of gas field development. When the gas reservoir pressure drops and it is difficult for natural gas to enter the transmission channel directly, external pressure boosting can solve this problem.

[0004] The natural gas pressurized extraction method mainly includes the following technical means: ‌1. Compressor boosting‌: Use a compressor to compress natural gas, increase wellhead pressure, and promote gas production. This is a common and effective way to increase production‌3.

[0005] ‌2. Hydraulic boosting: By injecting high-pressure water, the formation cracks are enlarged, the gas flow channels are increased, and the natural gas production is increased. This method is suitable for wells that need to increase gas production‌3.

[0006] ‌3. Improve the injection-production ratio‌: By adjusting the ratio of injected liquid (such as water) and produced gas, the pressure in the well can be increased and the production can be increased. This is a simple and effective way to increase production.

[0007] ‌4. Optimize production process‌: Improve gas production efficiency by optimizing production process and improving gas production equipment, thereby achieving increased production and efficiency‌.

[0008] ‌5. Natural gas wellhead separation and boosting device‌: When the natural gas pressure is insufficient, a separation and boosting device is used to boost the pressure of the produced natural gas to ensure that it can smoothly enter the transmission system.

[0009] With respect to the above-mentioned related technologies, the inventors believe that the above-mentioned pressurized mining method has the technical defect that the gap expansion is not large enough and the production capacity is low during the actual mining process. Summary of the invention

[0010] In order to solve the above technical problems, the present application provides a natural gas collection well pressure boosting and production increasing device.

[0011] The present application provides a natural gas collection well pressure boosting and production increasing device, which adopts the following technical solution: A natural gas collection well pressurization and production increasing device comprises a natural gas pipeline 1 and a natural gas pipeline 2, both of which are arranged obliquely, the natural gas pipeline 1 is located on the upper side of the natural gas pipeline 2, the sides of the natural gas pipeline 1 and the natural gas pipeline 2 are both provided with a plurality of air holes, and a fan is arranged at the upper opening of the natural gas pipeline 1.

[0012] By adopting the above technical solution, a high-pressure airflow is introduced into the underground through the set natural gas pipeline 1, and the airflow can be refluxed and recovered through the natural gas pipeline 2, so that the gaps between the underground coal stones become larger, which is convenient for collecting natural gas. The above method can effectively increase the production capacity of natural gas and improve its practical value.

[0013] Preferably, a feed pipe is provided on the upper side of the upper opening position of the natural gas pipeline one, and the feed pipe is connected to a particulate matter storage box, and the particulate matter storage box is located obliquely above the natural gas pipeline one. A partition component for controlling the mutual conduction or closure between the particulate matter storage box and the natural gas pipeline one is provided at the lower end of the feed pipe, and particulate matter is stored in the particulate matter storage box.

[0014] By adopting the above technical solution, a feeding pipe and a particle storage box are set at the upper toilet of natural gas pipeline one. The particles in the particle storage box can enter the gaps between coal stones through natural gas pipeline one, and then support the gaps, making each gap more convenient for flow, further increasing the gaps between adjacent coal stones, and being able to collect natural gas more efficiently, effectively improving the natural gas production capacity.

[0015] Preferably, the natural gas pipeline is provided with an internal ventilation pipe that can rotate relative to the natural gas pipeline, the outer annular surface of the internal ventilation pipe fits the inner annular surface of the natural gas pipeline, and an inclined extension pipe is fixedly connected to the outer annular surface of the internal ventilation pipe corresponding to the position of the air hole, the extension pipe is made of a slightly deformable material, the internal spaces of the extension pipe and the internal ventilation pipe are connected to each other, and an acute angle is formed between the extension pipe and the internal ventilation pipe.

[0016] By adopting the above technical solution, an internal ventilation pipe is set in the natural gas pipeline, and an extension pipe is connected to the internal ventilation pipe. When in use, the internal ventilation pipe can be controlled to rotate, so that the extension pipe extends from the air hole to the outside of the natural gas pipeline. When it contacts the external coal stone, it can break the coal stone and produce cracks, so that the natural gas in the coal stone leaks out, which is convenient for collecting more natural gas. This method can effectively increase the production capacity of natural gas.

[0017] Preferably, a partition is fixedly connected to the middle of the internal ventilation pipe, a gap is left on the side of the partition, and a baffle is provided obliquely below the gap, which can abut against the partition to close the internal ventilation pipe. A spring that is always in a compressed state is provided on the lower side of the baffle, and the baffle abuts against the partition under the action of the spring.

[0018] By adopting the above technical solution, partitions and baffles are arranged on the internal ventilation pipe, so that when the air flow pressure is small, the airflow will not pass through the isolation wall composed of the partition and the baffle. When the airflow is large, the strong airflow can drive the spring to compress, thereby leaving a gap between the partition and the baffle, so that high-strength airflow can pass through. After the strong airflow passes through, the air pressure on the upper part of the internal ventilation pipe will drop sharply, and then continue to replenish the pressure. At this time, the partition is only attached to the baffle so that the airflow cannot pass through. When the upper pressure is large enough, the airflow continues to pass. In this way, an indirect strong airflow can be formed, which is convenient for breaking through the gaps between coal stones, increasing coal stone cracks, and improving natural gas production capacity.

[0019] Preferably, the material barrier assembly includes a material baffle plate and a telescopic cylinder. An opening is provided on the lower end side of the feed pipe, and the material baffle plate is arranged at the opening of the feed pipe. The fixed end of the telescopic cylinder is fixedly connected to the feed pipe, and the movable end of the telescopic cylinder is fixedly connected to the material baffle plate. The material baffle plate is located between the feed pipe and the particulate storage box, and can be pulled back to the outside of the feed pipe through the opening.

[0020] Preferably, the natural gas pipeline is divided into an upper half pipeline, a middle half pipeline and a lower half pipeline, and elastic shock-absorbing parts are provided between the upper half pipeline and the middle half pipeline and between the middle half pipeline and the lower half pipeline; vibration motors are fixedly connected to the internal ventilation pipes at corresponding positions of the middle half pipeline and the lower half pipeline.

[0021] By adopting the above technical solution, setting a vibration motor can make more gaps, and the natural gas stored in the gaps can be more easily collected. At the same time, because the extension pipe extends into the coal stone gaps, the gaps can be made larger through vibration, further improving the natural gas production capacity.

[0022] Preferably, the natural gas pipeline 2 has an internal suction pipeline, the suction pipeline is attached to the lower side of the natural gas pipeline 2, the lower end of the suction pipeline has a reduced diameter, and a space for free airflow is left between the suction pipeline and the upper side of the natural gas pipeline 2.

[0023] By adopting the above technical solution and arranging an internal suction pipeline on the natural gas pipeline 2, the crushed stones falling into the natural gas pipeline 2 and the particulate matter that may pass through the natural gas pipeline 1 can be collected.

[0024] Preferably, a return material chamber for storing materials collected by the internal suction pipeline is fixed to the oblique upper end of the internal suction pipeline, and a blocking net is fixedly connected to the oblique upper part of the natural gas pipeline 2.

[0025] Preferably, an airflow conversion chamber is provided between the upper ends of the natural gas pipeline 1 and the natural gas pipeline 2, the fan is provided in the airflow conversion chamber, and the airflow conversion chamber is divided into an air inlet chamber and a return air chamber, the air inlet chamber is connected to the natural gas pipeline 1, and the return air chamber is connected to the natural gas pipeline 2.

[0026] By adopting the above technical solution and setting up an airflow conversion chamber, the airflow in the air inlet chamber and the air return chamber can be controlled to rotate, so that in the early stage of natural gas collection, as many gaps as possible in the coal stone can be opened in a circulating manner, thereby increasing production capacity.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. A high-pressure airflow is introduced into the underground through the natural gas pipeline 1, and the airflow can be refluxed and recovered through the natural gas pipeline 2, so that the gaps between the underground coal stones become larger, which is convenient for collecting natural gas. The above method can effectively increase the production capacity of natural gas and improve its practical value; a feeding pipe and a particle storage box are set on the upper toilet of the natural gas pipeline 1, and the particles in the particle storage box can enter the gaps between the coal stones through the natural gas pipeline 1, and then support the gaps, making the gaps more convenient for circulation, and can collect natural gas more efficiently, effectively increasing the production capacity of natural gas.

[0028] 2. The installation of a vibration motor can create more gaps, making it easier to collect the natural gas stored in the gaps. At the same time, since the extension pipe extends into the coal stone gaps, the gaps can be made larger through vibration, further increasing the natural gas production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the embodiment.

[0030] Figure 2 yes Figure 1 Enlarged view of part A in the middle.

[0031] Figure 3 yes Figure 1 Enlarged view of part B in the middle.

[0032] Explanation of the reference numerals in the accompanying drawings: 1. Natural gas pipeline one; 11. Internal ventilation pipe; 12. Extension pipe; 13. Feed pipe; 14. Particle storage box; 15. Material partition assembly; 151. Material baffle plate; 152. Telescopic cylinder; 16. Partition plate; 17. Baffle plate; 171. Spring; 172. Positioning plate; 2. Natural gas pipeline two; 21. Suction pipeline; 22. Partition baffle plate; 23. Collecting baffle plate; 24. Closed cylinder; 25. Return chamber; 3. Air hole; 4. Air flow conversion chamber; 41. Fan; 5. Upper half of the pipeline; 51. Middle half of the pipeline; 52. Lower half of the pipeline; 53. Vibration motor; 6. Elastic shock absorber; 61. Rubber connecting block. DETAILED DESCRIPTION

[0033] In order to be able to understand the features and technical contents of the embodiments of the present invention in more detail, the implementation of the embodiments of the present invention is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present invention. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0034] The terms "first", "second", etc. in the description and claims of the embodiments of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present invention described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0035] In the embodiments of the present invention, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the embodiments of the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0036] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0037] Unless otherwise specified, the term "plurality" means two or more and "plurality" means two or more.

[0038] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The following is combined with Figure 1-3 This application is described in further detail.

[0039] The present application discloses a natural gas collection well pressure-increasing and production-increasing device, referring to Figure 1 , including a natural gas pipeline 1 and a natural gas pipeline 2, the natural gas pipeline 1 and the natural gas pipeline 2 are parallel to each other and are both inclined, wherein the natural gas pipeline 1 is located obliquely above the natural gas pipeline 2; a plurality of gas holes 3 for collecting natural gas are opened on the sides of the natural gas pipeline 1 and the natural gas pipeline 2.

[0040] Reference Figure 1 and Figure 2An internal ventilation pipe 11 which can rotate relative to the natural gas pipeline 1 is inserted in the natural gas pipeline 1, and the internal ventilation pipe 11 is tightly fitted with the natural gas pipeline 1 and seamlessly connected; an extension pipe 12 is fixedly connected to the position of the air hole 3 on the outer ring surface of the internal ventilation pipe 11, and the extension pipe 12 is connected to the hollow part of the internal ventilation pipe 11 and is arranged obliquely. The extension pipe 12 is made of a micro-deformable material and an acute angle structure is formed between the extension pipe 12 and the internal ventilation pipe 11. When the internal ventilation pipe 11 rotates, the extension pipe 12 can extend from the air hole 3 to the outer ring surface of the natural gas pipeline 1, and is inserted on the coal stone to generate more cracks in the coal stone; a feed pipe 13 is arranged at the upper opening position of the natural gas pipeline 1, and the feed pipe 13 is arranged at the feed pipe. A particle storage box 14 is connected to the feed pipe 13, in which particulate matter is stored and the particle storage box 14 is located obliquely above the natural gas pipeline 1. A partition assembly 15 for controlling the mutual conduction or closure between the particle storage box 14 and the natural gas pipeline 1 is provided at the lower end of the feed pipe 13. The partition assembly 15 includes a baffle plate 151 and a telescopic cylinder 152. An opening is provided on the side of the lower end of the feed pipe 13. The baffle plate 151 is arranged at the opening of the feed pipe 13. The fixed end of the telescopic cylinder 152 is fixedly connected to the feed pipe 13, and the movable end of the telescopic cylinder 152 is fixedly connected to the baffle plate 151. The baffle plate 151 is located between the feed pipe 13 and the particle storage box 14.

[0041] The natural gas pipeline 1 is divided into an upper pipeline 5, a middle pipeline 51 and a lower pipeline 52. Elastic shock-absorbing components 6 are provided between the upper pipeline 5 and the middle pipeline 51 and between the middle pipeline 51 and the lower pipeline 52. The elastic shock-absorbing components 6 are rubber connecting blocks 61. Vibration motors 53 are fixedly connected to the internal ventilation pipes 11 at corresponding positions of the middle pipeline 51 and the lower pipeline 52.

[0042] A partition 16 is fixedly connected at the middle position of the internal ventilation pipe 11, and the partition 16 only covers half of the entire cross-section of the internal ventilation pipe 11. The other half is a gap. A baffle 17 is arranged obliquely below the gap. The baffle 17 can contact the baffle 16 to perform a sealing treatment. A spring 171 is arranged obliquely below the baffle 17. One end of the spring 171 is fixedly connected to the baffle 17, and a positioning plate 172 is fixedly connected to the other end of the spring 171. The positioning plate 172 is fixedly connected to the internal ventilation pipe 11. The spring 171 is always in a compressed state, and will only be further compressed when the pressure on the upper part of the internal ventilation pipe 11 is relatively high, so that the high-intensity airflow on the upper part can enter the lower side of the internal ventilation pipe 11.

[0043] Reference Figure 1 and Figure 3A suction pipeline 21 is provided on the natural gas pipeline 2, and the suction pipeline 21 is attached to the lower side of the natural gas pipeline 2. The diameter of the lower end of the suction pipeline 21 is reduced, and a space for free airflow is left between the suction pipeline 21 and the upper side of the natural gas pipeline 2; a partition baffle 2217 is provided obliquely above the suction pipeline 21, and the partition baffle 2217 can divide the natural gas pipeline 2 into two upper and lower chambers. A collecting port is provided at the bottom of the lower chamber, and a collecting baffle 2317 that can slide to close the collecting port is provided at the collecting port. A fixed connection is provided on the partition baffle 17 at a position corresponding to the collecting baffle 2317. It is connected to a closing cylinder 24, and the extension of the closing cylinder 24 can drive the collecting baffle 2317 to move downward to completely close the upper and lower chambers; a return bin 25 for storing materials collected by the internal suction pipeline 21 is fixed at the oblique upper end of the internal suction pipeline 21, and a blocking net is fixedly connected to the oblique upper part of the natural gas pipeline 2; an airflow conversion chamber 4 is arranged between the upper ends of the natural gas pipeline 1 and the natural gas pipeline 2, and a fan 41 is arranged in the airflow conversion chamber 4, and the airflow conversion chamber 4 is divided into an air inlet chamber and a return air chamber by the fan 41, the air inlet chamber is connected to the natural gas pipeline 1, and the return air chamber is connected to the natural gas pipeline 2.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A natural gas collection well pressure boosting and production increasing device, characterized in that: The invention comprises a natural gas pipeline 1 (1) and a natural gas pipeline 2 (2), both of which are arranged at an inclination, the natural gas pipeline 1 (1) is located on the upper side of the natural gas pipeline 2 (2), the sides of the natural gas pipeline 1 (1) and the natural gas pipeline 2 (2) are both provided with a plurality of air holes (3), and a fan (41) is provided at the upper opening of the natural gas pipeline 1 (1).

2. A natural gas collection well pressure boosting and production increasing device according to claim 1, characterized in that: A feed pipe (13) is provided on the upper side of the upper opening of the natural gas pipeline (1), and a particulate matter storage box (14) is connected to the feed pipe (13). The particulate matter storage box (14) is located obliquely above the natural gas pipeline (1), and a partition component (15) is provided at the lower end of the feed pipe (13) for controlling the mutual conduction or closure between the particulate matter storage box (14) and the natural gas pipeline (1), and particulate matter is stored in the particulate matter storage box (14).

3. A natural gas collection well pressure boosting and production increasing device according to claim 1, characterized in that: The natural gas pipeline (1) is provided with an internal ventilation pipe (11) which can rotate relative to the natural gas pipeline (1), the outer annular surface of the internal ventilation pipe (11) is in contact with the inner annular surface of the natural gas pipeline (1), and an inclined extension pipe (12) is fixedly connected to the outer annular surface of the internal ventilation pipe (11) at a position corresponding to the air hole (3), the extension pipe (12) is made of a slightly deformable material, the internal spaces of the extension pipe (12) and the internal ventilation pipe (11) are connected to each other, and an acute angle is formed between the extension pipe (12) and the internal ventilation pipe (11).

4. A natural gas collection well pressure boosting and production increasing device according to claim 3, characterized in that: A partition (16) is fixedly connected to the middle of the internal ventilation pipe (11), a gap is left on the side of the partition (16), and a baffle (17) is arranged obliquely below the gap, which can abut against the partition (16) to close the internal ventilation pipe (11), and a spring (171) that is always in a compressed state is arranged on the lower side of the baffle (17), and the baffle (17) abuts against the partition (16) under the action of the spring (171).

5. A natural gas collection well pressure boosting and production increasing device according to claim 2, characterized in that: The material barrier assembly (15) comprises a baffle plate (151) and a telescopic cylinder (152); an opening is provided on the lower end side of the feed pipe (13); the baffle plate (151) is arranged at the opening of the feed pipe (13); the fixed end of the telescopic cylinder (152) is fixedly connected to the feed pipe (13); the movable end of the telescopic cylinder (152) is fixedly connected to the baffle plate (151); the baffle plate (151) is located between the feed pipe (13) and the particle storage box (14), and can be pulled back to the outside of the feed pipe (13) through the opening.

6. A natural gas collection well pressure boosting and production increasing device according to claim 1, characterized in that: The natural gas pipeline (1) is divided into an upper pipeline (5), a middle pipeline (51) and a lower pipeline (52); elastic shock-absorbing components (6) are provided between the upper pipeline (5) and the middle pipeline (51) and between the middle pipeline (51) and the lower pipeline (52); and vibration motors (53) are fixedly connected to the internal ventilation pipes (11) at corresponding positions of the middle pipeline (51) and the lower pipeline (52).

7. A natural gas collection well pressure boosting and production increasing device according to claim 1, characterized in that: The second natural gas pipeline (2) has an internal suction pipeline (21), the suction pipeline (21) is attached to the lower side of the second natural gas pipeline (2), the lower end of the suction pipeline (21) has a reduced diameter, and a space for free air flow is left between the suction pipeline (21) and the upper side of the second natural gas pipeline (2).

8. A natural gas collection well pressure boosting and production increasing device according to claim 6, characterized in that: A return material chamber (25) for storing materials collected by the internal material suction pipeline (21) is fixed at the oblique upper end of the internal material suction pipeline (21), and a blocking net is fixedly connected to the oblique upper portion of the natural gas pipeline 2 (2).

9. A natural gas collection well pressure boosting and production increasing device according to claim 1, characterized in that: An airflow conversion chamber (4) is provided between the upper ends of the natural gas pipeline one (1) and the natural gas pipeline two (2), the fan (41) being arranged in the airflow conversion chamber (4) and dividing the airflow conversion chamber (4) into an air inlet chamber and an air return chamber, the air inlet chamber being connected to the natural gas pipeline one (1), and the air return chamber being connected to the natural gas pipeline two (2).

Images