Wellhead desanding and throttling integrated device for high-pressure gas well

Abstract

The utility model belongs to the technical field of oil and gas exploitation, and relates to a desanding and throttling integrated device for a wellhead of a high-pressure gas well. Comprising a first-stage sand collecting cylinder, a gas inlet, a gas outlet and a sand discharging opening are formed in the first-stage sand collecting cylinder, a rotational flow cylinder and a flow adjusting component are arranged in the first-stage sand collecting cylinder, the flow adjusting component is located between the gas inlet and the gas outlet, and the rotational flow cylinder is located between the gas inlet and the sand discharging opening. The first-stage sand collecting cylinder is a main place for gas-sand separation, and is used for installing the cyclone cylinder and the flow adjusting component at the same time. A gas inlet, a gas outlet and a sand discharging port are formed in the first-stage sand collecting cylinder, a gas-sand mixture enters from the gas inlet and is separated by the cyclone cylinder, produced gas is discharged from the gas outlet, the produced gas flow is adjusted through the flow adjusting component, and sand grains are discharged from the sand discharging port. The well mouth desanding device can realize well mouth desanding and gas well yield adjustment. The well mouth desanding device can realize well mouth desanding and gas well yield adjustment.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil and gas exploitation and relates to an integrated device for sand removal and throttling at a wellhead of a high-pressure gas well. Background Art

[0002] During the development of high-pressure gas fields, sand production is usually associated with the formation. A large number of formation sand samples are often collected at the wellhead and wellbore. Through testing, the formation sand content is even as high as 90%, posing a serious threat to the stable production of high-pressure gas wells.

[0003] Specifically, the sand production in a single well has caused significant damage to the oil nozzle, surface gathering and processing system. As the gas flows, the formation sand particles will gradually accumulate inside the pipeline and equipment, causing blockage of downstream pipelines, throttling manifolds, separators, heating furnaces and other surface equipment. This blockage will not only hinder the flow of gas and reduce production efficiency, but may also cause equipment damage and increase maintenance costs and risks.

[0004] More seriously, the erosion of formation sand cannot be ignored. The formation sand particles carried by the high-speed gas flow will scour the inner walls of the pipeline and equipment, resulting in material loss and wall thickness reduction, thus shortening the service life of the equipment. In some extreme cases, it may even cause equipment rupture and cause safety accidents.

[0005] Sand production from the formation poses a serious threat to the production process of the gas field, restricting the stable production of high-pressure gas wells and the efficient development of the gas field.

[0006] Secondly, currently, sand-producing single wells basically do not use sand removal devices, and only some single wells have sand removal devices. Since the existing sand removal devices are mostly 70MPa, they are mainly used for sand removal after the secondary oil nozzle, which cannot meet the requirements of sand removal at the wellhead of high-pressure gas wells. Utility Model Content

[0007] In order to overcome the shortcomings of the prior art, the utility model aims to provide an integrated device for high-pressure gas wellhead sand removal and throttling, which can realize high-pressure wellhead sand removal and gas well production regulation.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] The utility model discloses an integrated device for removing sand and throttling at the wellhead of a high-pressure gas well, comprising a first-level sand collecting cylinder, on which a gas inlet, a gas outlet and a sand discharge port are provided, the sand discharge port is located at the bottom of the first-level sand collecting cylinder, the gas inlet is located between the gas outlet and the sand discharge port, a cyclone cylinder and a flow regulating component are arranged in the first-level sand collecting cylinder, the flow regulating component is located between the gas inlet and the gas outlet, and the cyclone cylinder is located between the gas inlet and the sand discharge port.

[0010] Furthermore, the sand discharge port is connected to the secondary sand collecting tube, and a first sand taking ball valve is arranged between the sand discharge port and the secondary sand collecting tube.

[0011] Furthermore, the secondary sand collecting cylinder is connected to the sand discharging nozzle through the second sand taking ball valve.

[0012] Furthermore, a flange cover is provided on the sand discharge nozzle.

[0013] Furthermore, a pressure relief plug is provided on the sand discharge nozzle.

[0014] Furthermore, the flow regulating component includes a cartridge cage, which is located between the gas inlet and the gas outlet. A plunger is movably embedded in the cartridge cage, and the plunger is connected to a plunger rod. The plunger is used to adjust the ventilation volume of the cartridge cage, and the plunger rod is movably inserted into the cartridge cage.

[0015] Furthermore, the plunger rod is connected to the output end of the electric actuator.

[0016] Furthermore, an anti-wear sleeve is arranged in the first-stage sand collecting cylinder, and the anti-wear sleeve is located between the filter cartridge cage and the cyclone cylinder.

[0017] Further, the anti-wear sleeve is arranged opposite to the gas inlet.

[0018] Furthermore, the bottom of the first-stage sand collecting tube is funnel-shaped.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1. The utility model includes a first-level sand collecting tube, which is the main place for gas-sand separation and is also used to install a cyclone tube and a flow regulating component. A gas inlet, a gas outlet and a sand discharge port are provided on the first-level sand collecting tube. A cyclone tube and a flow regulating component are provided inside the first-level sand collecting tube. The flow regulating component is located between the gas inlet and the gas outlet, and the cyclone tube is located between the gas inlet and the sand discharge port. The gas-sand mixture enters from the gas inlet, is separated by the cyclone tube, and the produced gas is discharged from the gas outlet. The gas production flow is adjusted by the flow regulating component, and the sand particles are discharged from the sand discharge port. The utility model can realize high-pressure wellhead sand removal and gas well production regulation.

[0021] 2. The utility model has a two-stage sand collecting tube for centralized collection of sand particles, and the first ball valve for sand collection is used to control the connection between the sand discharge port and the two-stage sand collecting tube, so as to facilitate centralized sand collection.

[0022] 3. When taking sand, the utility model opens the first ball valve for taking sand first, and after the sand enters the secondary sand collecting tube, closes the first ball valve for taking sand, and opens the second ball valve for taking sand, so that online sand taking can be realized.

[0023] 4. The pressure relief plug of the utility model is used to relieve pressure at the sand discharge nozzle to ensure the safety of sand extraction.

[0024] 5. The electric actuator of the utility model controls the position of the plunger in the cartridge cage through the plunger rod, thereby adjusting the ventilation volume of the cartridge cage to achieve remote control of flow regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Among them: 01, gas inlet; 02, cyclone tube; 03, primary sand collecting tube; 04, first ball valve for sand removal; 05, secondary sand collecting tube; 06, second ball valve for sand removal; 07, sand discharge nozzle; 08, electric actuator; 09, filter cartridge cage; 10, gas outlet; 11, plunger; 12, anti-wear sleeve; 13, plunger rod; 14, flange cover; 15, pressure relief plug; 16, flow regulating component; 17, sand discharge port. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model 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 data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] The utility model is further described in detail below with reference to the accompanying drawings:

[0030] See also Figure 1The utility model discloses an integrated device for removing sand and throttling at the wellhead of a high-pressure gas well, including a first-level sand collecting tube 03, which is the main place for gas-sand separation and is also used to install a cyclone tube 02 and a flow regulating component 16. A gas inlet 01, a gas outlet 10 and a sand discharge port 17 are provided on the first-level sand collecting tube 03. The sand discharge port 17 is located at the bottom of the first-level sand collecting tube 03. The gas inlet 01 is located between the gas outlet 10 and the sand discharge port 17. The gas-sand mixture enters from the gas inlet 01. After separation, the sand particles are discharged from the sand discharge port 17, and the produced gas is discharged from the gas outlet 10. A cyclone tube 02 and a flow regulating component 16 are provided in the first-level sand collecting tube 03. The flow regulating component 16 is located between the gas inlet 01 and the gas outlet 10. The cyclone tube 02 is located between the gas inlet 01 and the sand discharge port 17. The cyclone tube 02 is used for gas-sand separation, and the flow regulating component 16 is used to adjust the gas production flow rate. This device is mainly used in high-pressure gas wells with a gas well pressure exceeding 15Mpa.

[0031] See also Figure 1 In another feasible embodiment of the utility model, the following is adaptively modified according to the situation. It includes a first-level sand collecting tube 03, which is provided with a gas inlet 01, a gas outlet 10 and a sand discharge port 17, and a cyclone tube 02 and a flow regulating component 16 are arranged in the first-level sand collecting tube 03, the flow regulating component 16 is located between the gas inlet 01 and the gas outlet 10, and the cyclone tube 02 is located between the gas inlet 01 and the sand discharge port 17.

[0032] During specific operation, the gas-sand mixture enters the primary sand collecting tube 03 from the gas inlet 01, is separated by the cyclone tube 02, and the produced gas is discharged from the gas outlet 10. The gas flow rate is adjusted by the flow regulating component 16, and the sand particles are discharged from the sand discharge port 17.

[0033] Embodiment 1:

[0034] See also Figure 1 The present embodiment discloses an integrated device for removing sand and throttling at the wellhead of a high-pressure gas well, including a first-level sand collecting barrel 03, on which a gas inlet 01, a gas outlet 10 and a sand discharge port 17 are provided, the sand discharge port 17 is located at the bottom of the first-level sand collecting barrel 03, the gas inlet 01 is located between the gas outlet 10 and the sand discharge port 17, a cyclone barrel 02 and a flow regulating component 16 are provided in the first-level sand collecting barrel 03, the flow regulating component 16 is located between the gas inlet 01 and the gas outlet 10, and the cyclone barrel 02 is located between the gas inlet 01 and the sand discharge port 17.

[0035] Preferably, the sand discharge port 17 is connected to the secondary sand collecting tube 05, and a first sand taking ball valve 04 is arranged between the sand discharge port 17 and the secondary sand collecting tube 05. The secondary sand collecting tube 05 is used for centralized collection of sand particles, and the first sand taking ball valve 04 is used to control the connection between the sand discharge port 17 and the secondary sand collecting tube 05 to facilitate centralized sand collection.

[0036] Preferably, the secondary sand collecting barrel 05 is connected to the sand discharge nozzle 07 through the second sand taking ball valve 06, and online sand taking can be achieved by cooperating with the first sand taking ball valve 04 and the second sand taking ball valve 06, as follows: when taking sand, first open the first sand taking ball valve 04, and after the sand enters the secondary sand collecting barrel 05, close the first sand taking ball valve 04 and open the second sand taking ball valve 06.

[0037] Preferably, a flange cover 14 is provided on the sand discharge nozzle 07 , and the flange cover 14 is used to discharge sand from the sand discharge nozzle 07 after being opened.

[0038] Preferably, a pressure relief plug 15 is provided on the sand discharge nozzle 07, and the pressure relief plug 15 is used to relieve pressure on the sand discharge nozzle 07 to ensure the safety of sand removal.

[0039] Embodiment 2:

[0040] See also Figure 1 The present embodiment discloses an integrated device for removing sand and throttling at the wellhead of a high-pressure gas well, including a first-level sand collecting barrel 03, on which a gas inlet 01, a gas outlet 10 and a sand discharge port 17 are provided, the sand discharge port 17 is located at the bottom of the first-level sand collecting barrel 03, the gas inlet 01 is located between the gas outlet 10 and the sand discharge port 17, a cyclone barrel 02 and a flow regulating component 16 are provided in the first-level sand collecting barrel 03, the flow regulating component 16 is located between the gas inlet 01 and the gas outlet 10, and the cyclone barrel 02 is located between the gas inlet 01 and the sand discharge port 17.

[0041] Preferably, the flow regulating component 16 includes a cartridge cage 09, which is located between the gas inlet 01 and the gas outlet 10. A plunger 11 is movably embedded in the cartridge cage 09, and the plunger 11 is connected to a plunger rod 13. The plunger 11 is used to adjust the ventilation volume of the cartridge cage 09. The plunger rod 13 is movably inserted into the cartridge cage 09, and the movable stroke of the plunger 13 is from the bottom to the top of the cartridge cage 09.

[0042] Preferably, the plunger rod 13 is connected to the output end of the electric actuator 08, and the electric actuator 08 controls the relative position of the plunger 11 in the cartridge cage 09 through the plunger rod 13, thereby adjusting the ventilation volume of the cartridge cage 09 to achieve regulation and control of the gas production of a single well.

[0043] Embodiment three:

[0044] See also Figure 1The present embodiment discloses an integrated device for removing sand and throttling at the wellhead of a high-pressure gas well, including a first-level sand collecting barrel 03, on which a gas inlet 01, a gas outlet 10 and a sand discharge port 17 are provided, the sand discharge port 17 is located at the bottom of the first-level sand collecting barrel 03, the gas inlet 01 is located between the gas outlet 10 and the sand discharge port 17, a cyclone barrel 02 and a flow regulating component 16 are provided in the first-level sand collecting barrel 03, the flow regulating component 16 is located between the gas inlet 01 and the gas outlet 10, and the cyclone barrel 02 is located between the gas inlet 01 and the sand discharge port 17.

[0045] Preferably, an anti-wear sleeve 12 is arranged in the primary sand collecting tube 03, and the anti-wear sleeve 12 is located between the filter cartridge cage 09 and the cyclone tube 02. The anti-wear sleeve 12 is relatively resistant to formation sand erosion and can protect and strengthen the primary sand collecting tube 03 body.

[0046] Preferably, the anti-wear sleeve 12 is arranged opposite to the gas inlet 01 .

[0047] Preferably, the bottom of the primary sand collecting tube 03 is funnel-shaped.

[0048] Embodiment 4:

[0049] See also Figure 1 The present embodiment discloses an integrated device for removing sand and throttling at the wellhead of a high-pressure gas well, which is mainly composed of a gas inlet 01; a cyclone cylinder 02, a first-level sand collecting cylinder 03, a first sand taking ball valve 04, a second-level sand collecting cylinder 05, a second sand taking ball valve 06, a sand discharge nozzle 07, an electric actuator 08, a filter cartridge cage 09, a gas outlet 10, a plunger 11, an anti-wear sleeve 12, a plunger rod 13, a flange cover 14 and a pressure relief plug 15.

[0050] The cyclone cylinder is mainly used to separate and settle gas-carried sand; the primary sand collecting cylinder is mainly used to store sand particles; the first sand extraction ball valve and the second sand extraction ball valve are used for online sand extraction; the electric actuator, filter cartridge cage, plunger, and plunger rod are used for regulating gas well production.

[0051] The integrated device is installed on the gas production tree at the wellhead of a high-pressure gas well. The gas inlet 01 is connected to the flange of the gas production tree. The gas carries sand into the cyclone tube 02, and the natural gas is separated from the sand by cyclone separation. The sand particles are settled to the primary sand collecting tube 03. During the sand cleaning operation, the first ball valve 04 for sand removal is opened, the first ball valve 04 for sand removal is closed, the second ball valve 06 for sand removal is opened, and the second ball valve 06 for sand removal is closed when the sand reaches the sand discharge nozzle 07. The pressure is released through the pressure relief plug 15, and the flange cover 14 is disassembled to realize sand removal. The electric actuator 08 can realize remote control and on-site control. The up and down movement of the plunger 11 is realized by the electric actuator 08 and the plunger rod 13. The flow area of ​​the filter cartridge cage 09 is changed by the reciprocating motion of the plunger 11 to realize the regulation of the gas well production.

[0052] 1. The device removes sand from the wellhead through the cyclone tube and sand collecting tube on the device, solving the problem of erosion of downstream pipelines, separators, heating furnaces and other ground equipment caused by sand from the wellhead, and ensuring the smooth operation of gas wells and gathering and transportation pipelines;

[0053] 2. The device can be used for gas well production regulation. The gas well production regulation is achieved through the electric actuator, filter cartridge cage, plunger, and plunger rod on the device, realizing the dual functions of wellhead sand removal and production regulation;

[0054] For high-pressure gas wells that adopt secondary throttling production, the use of this device can save a set of throttling valves. Secondly, the device can realize the online sand cleaning function to ensure the production time rate of the gas well.

[0055] The above content is only for explaining the technical idea of ​​the utility model and cannot be used to limit the protection scope of the utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the utility model shall fall within the protection scope of the claims of the utility model.

Claims

1. An integrated device for sand removal and throttling at the wellhead of a high-pressure gas well, characterized in that: The invention comprises a first-level sand collecting barrel (03), wherein the first-level sand collecting barrel (03) is provided with a gas inlet (01), a gas outlet (10) and a sand discharge port (17), wherein the sand discharge port (17) is located at the bottom of the first-level sand collecting barrel (03), and the gas inlet (01) is located between the gas outlet (10) and the sand discharge port (17). A cyclone barrel (02) and a flow regulating component (16) are arranged in the first-level sand collecting barrel (03), wherein the flow regulating component (16) is located between the gas inlet (01) and the gas outlet (10), and the cyclone barrel (02) is located between the gas inlet (01) and the sand discharge port (17).

2. The integrated device for removing sand and throttling at the wellhead of a high-pressure gas well according to claim 1 is characterized in that: The sand discharge port (17) is connected to the secondary sand collecting cylinder (05), and a first sand taking ball valve (04) is arranged between the sand discharge port (17) and the secondary sand collecting cylinder (05).

3. The integrated device for removing sand and throttling at the wellhead of a high-pressure gas well according to claim 2 is characterized in that: The secondary sand collecting cylinder (05) is connected to the sand discharging nozzle (07) via the second sand taking ball valve (06).

4. The integrated device for removing sand and throttling at the wellhead of a high-pressure gas well according to claim 3 is characterized in that: The sand discharge nozzle (07) is provided with a flange cover (14).

5. The integrated device for removing sand and throttling at the wellhead of a high-pressure gas well according to claim 4 is characterized in that: The sand discharge nozzle (07) is provided with a pressure relief plug (15).

6. The integrated device for removing sand and throttling at the wellhead of a high-pressure gas well according to claim 1, characterized in that: The flow regulating component (16) comprises a filter cartridge cage (09), the filter cartridge cage (09) being located between the gas inlet (01) and the gas outlet (10), a plunger (11) being movably embedded in the filter cartridge cage (09), the plunger (11) being connected to a plunger rod (13), the plunger (11) being used to adjust the ventilation volume of the filter cartridge cage (09), and the plunger rod (13) being movably inserted into the filter cartridge cage (09).

7. The integrated device for removing sand and throttling at the wellhead of a high-pressure gas well according to claim 6, characterized in that: The plunger rod (13) is connected to the output end of the electric actuator (08).

8. The integrated device for removing sand and throttling at the wellhead of a high-pressure gas well according to claim 7, characterized in that: An anti-wear sleeve (12) is arranged in the first-level sand collecting cylinder (03), and the anti-wear sleeve (12) is located between the filter cartridge cage (09) and the cyclone cylinder (02).

9. The integrated device for removing sand and throttling at the wellhead of a high-pressure gas well according to claim 8, characterized in that: The anti-wear sleeve (12) is arranged opposite to the gas inlet (01).

10. The integrated device for removing sand and throttling at the wellhead of a high-pressure gas well according to claim 1, characterized in that: The bottom of the primary sand collecting tube (03) is funnel-shaped.

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