A natural gas gathering, transmission and lifting integrated equipment

Abstract

The utility model discloses an integrated natural gas gathering, transmission and gas lifting equipment, including a machine base, a motor, a coupling, a gathering and transmission first-stage compression cylinder assembly, a gathering and transmission second-stage compression cylinder assembly, a gas lift first-stage compression cylinder assembly and a gas lift second- and third-stage compression cylinder assembly; wherein, the motor is mounted on the machine base by bolts, one end of the coupling is connected to the motor, and the other end is connected to the compressor main engine, and the bottom of the compressor main engine is mounted on the machine base by bolts; the two sides of the compressor main engine are respectively connected with a first middle body component and a second middle body component by bolts, the gathering and transmission first-stage compression cylinder assembly and the gathering and transmission second-stage compression cylinder assembly are arranged on both sides of the compressor main engine through the first middle body component, and the gas lift first-stage compression cylinder assembly and the gas lift second- and third-stage compression cylinder assembly are arranged on both sides of the compressor main engine through the second middle body component. The utility model integrates the gathering and transmission function with the gas lift function, and when the gas lift function is not used, the gas lift function can be used as the gathering and transmission function.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, and in particular to natural gas gathering, transmission and lifting integrated equipment. Background Art

[0002] my country's economic structure and energy structure are both in a critical period of transformation. New clean energy industries such as natural gas, shale gas, and coalbed methane are facing huge development opportunities. In the process of natural gas exploitation in oil and gas wells, when the exhaust pressure of the gas well itself is lower than the external transmission pressure, the gas needs to be pressurized to reach the external transmission pressure and then transmitted externally, which is called pressurized gathering and transportation; when the energy supplied by the bottom of the gas well is not enough to lift the oil and gas from the bottom of the well to the ground, the oil and gas well will stop spraying, and high-pressure natural gas needs to be injected into the bottom of the well, and the expansion of the gas is used to reduce the density of the mixed liquid in the well, thereby lifting the oil and gas in the well to the ground, which is called gas lift.

[0003] At present, oil and gas fields all over the world generally use single-function booster gathering and transportation compressors, which can only boost natural gas for external transmission. When the gas well stops flowing, a special vehicle-mounted or fixed gas lift compressor is used to lift the gas well. If a separate gas lift compressor is purchased, the company's fixed asset costs will increase and the area occupied by the gas well platform will increase. If a gas lift compressor is leased for a long time, the rental fee is basically around RMB 20,000 / day, which increases the company's operating costs. Moreover, if the gas lift compressor cannot arrive at the site in time for gas lifting, it will cause the gas well to stop production, reduce the normal gas production of the gas well platform, and greatly reduce the company's profits. Utility Model Content

[0004] The utility model provides a natural gas gathering, transmission and gas lifting integrated equipment to solve the technical problem that currently the oil and gas fields generally use a single-function booster gathering and transmission compressor and cannot realize the gathering, transmission and gas lifting functions on the same compressor at the same time.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The application provides a natural gas gathering and transmission gas lifting integrated equipment, including a machine base, a motor, a coupling, a compressor main engine, a gathering and transmission first-stage compression cylinder assembly, a gathering and transmission second-stage compression cylinder assembly, a gas lift first-stage compression cylinder assembly, and a gas lift second- and third-stage compression cylinder assembly; wherein,

[0007] The motor is mounted on the base by bolts, one end of the coupling is connected to the motor, and the other end is connected to the compressor main engine, and the bottom of the compressor main engine is mounted on the base by bolts; the two sides of the compressor main engine are respectively connected with a first middle body component and a second middle body component by bolts, the gathering and transportation first-stage compression cylinder assembly and the gathering and transportation second-stage compression cylinder assembly are arranged on both sides of the compressor main engine through the first middle body component, and the gas lift first-stage compression cylinder assembly and the gas lift second- and third-stage compression cylinder assemblies are arranged on both sides of the compressor main engine through the second middle body component.

[0008] Furthermore, the coupling outer shell is provided with a shield to ensure the normal operation of the coupling and prevent people and other objects from colliding with the coupling. The shield is fixed to the machine base by bolts.

[0009] Furthermore, the gathering and transporting first-stage compression cylinder assembly includes a gathering and transporting first-stage compression cylinder, a first piston rod, a first cylinder end cover and a first cylinder head. The first piston rod is arranged in the gathering and transporting first-stage compression cylinder, and the first cylinder end cover and the first cylinder head are respectively arranged at both ends of the gathering and transporting first-stage compression cylinder.

[0010] Furthermore, the gathering and transporting secondary compression cylinder assembly includes a gathering and transporting secondary compression cylinder, a second piston rod, a second cylinder end cover and a second cylinder head. The second piston rod is arranged in the gathering and transporting secondary compression cylinder. The second cylinder end cover and the second cylinder head are respectively arranged at both ends of the gathering and transporting secondary compression cylinder.

[0011] Furthermore, the gas lift first-stage compression cylinder assembly includes a gas lift first-stage compression cylinder, a third piston rod and a third cylinder head. The third piston rod is arranged in the gas lift first-stage compression cylinder, and the third cylinder head is provided at the end position of the gas lift first-stage compression cylinder.

[0012] Furthermore, the gas lift two-stage and three-stage compression cylinder assembly includes a gas lift two-stage compression cylinder, a gas lift three-stage compression cylinder, a fourth piston rod and a fourth cylinder head. The gas lift three-stage compression cylinder is connected to the rear end of the gas lift two-stage compression cylinder, the fourth piston rod is arranged in the gas lift two-stage compression cylinder and the gas lift three-stage compression cylinder, and the rear end of the gas lift three-stage compression cylinder is provided with a fourth cylinder head.

[0013] Furthermore, a connecting portion is provided at the front end of the gas lift three-stage compression cylinder, the connecting portion extends into the second-stage compression cylinder, and a fixing portion is protrudingly provided on the side. The gas lift three-stage compression cylinder is fixed to the rear end of the gas lift two-stage compression cylinder by passing bolts through the fixing portion.

[0014] Furthermore, the outer side of the first-stage gathering and transportation compression cylinder is fixedly connected with a first-stage gathering and transportation air intake buffer tank and a first-stage gathering and transportation exhaust buffer tank by bolts; the outer side of the second-stage gathering and transportation compression cylinder is fixedly connected with a second-stage gathering and transportation air intake buffer tank and a second-stage gathering and transportation exhaust buffer tank by bolts.

[0015] Furthermore, the outer side of the gas lift first-stage compression cylinder is fixedly connected with a gas lift first-stage air intake buffer tank and a gas lift first-stage exhaust buffer tank by bolts; the outer side of the gas lift second-stage compression cylinder is fixedly connected with a gas lift second-stage air intake buffer tank and a gas lift second-stage exhaust buffer tank by bolts; the outer side of the gas lift third-stage compression cylinder is fixedly connected with a gas lift third-stage air intake buffer tank and a gas lift third-stage exhaust buffer tank by bolts.

[0016] Beneficial effects achieved by the utility model:

[0017] (1) The utility model provides an integrated natural gas gathering, transmission and gas lifting equipment. The skid-mounted compressor integrates the gathering and transmission functions and the gas lifting functions. When the gas lift function is not used, the gas lift function can be used as the gathering and transmission function; when the gas lift function is used, the gathering and transmission and the gas lift can work simultaneously; the normal working state of the compressor gathering and transmission is two-stage compression. When one-stage compression can meet the external transmission pressure requirement, double-stage compression can be used to increase the exhaust volume of the gas well.

[0018] (2) The utility model provides an integrated natural gas gathering, transmission and gas lifting equipment, in which the compressor has the function of increasing the gas lift intake pressure. When the source gas as the gas lift intake pressure is low, the gas lift pressure is too low and gas lift cannot be performed. The exhaust gas after two-stage gathering and transmission pressurization can be used as the gas lift intake source gas, thereby increasing the gas lift pressure and satisfying the gas lift function. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of the utility model natural gas gathering, transmission and lifting integrated equipment;

[0020] Figure 2 It is a top view of the natural gas gathering, transmission and lifting integrated equipment of the utility model;

[0021] Figure 3 It is a cross-sectional view of the utility model natural gas gathering, transmission and lifting integrated equipment in the AA direction;

[0022] Figure 4 It is a cross-sectional view of the utility model natural gas gathering, transmission and lifting integrated equipment in the BB direction;

[0023] Figure 5 It is an enlarged view of point A of the present utility model.

[0024] Reference numerals:

[0025] 1. Base; 2. Motor; 3. Bolts; 4. Coupling; 5. Shield; 6. Compressor host; 7. Gathering and transporting first-stage compression cylinder assembly; 701. Gathering and transporting first-stage compression cylinder; 702. First piston rod; 703. First cylinder end cover; 704. First cylinder head; 705. Gathering and transporting first-stage air intake buffer tank; 706. Gathering and transporting first-stage exhaust buffer tank; 8. Gathering and transporting second-stage compression cylinder assembly; 801. Gathering and transporting second-stage compression cylinder; 802. Second piston rod; 803. Second cylinder end cover; 804. Second cylinder head; 805. Gathering and transporting second-stage air intake buffer tank; 806. Gathering and transporting second-stage exhaust buffer tank; 9. Gathering and transporting first-stage compression cylinder assembly; 901. Gas 1. First-stage compression cylinder of gas lift; 902. third piston rod; 903. third cylinder head; 904. first-stage air intake buffer tank of gas lift; 905. first-stage exhaust buffer tank of gas lift; 10. second- and third-stage compression cylinder assembly of gas lift; 1001. second-stage compression cylinder of gas lift; 1002. third-stage compression cylinder of gas lift; 1003. fourth piston rod; 1004. fourth cylinder head; 1005. second-stage air intake buffer tank of gas lift; 1006. second-stage exhaust buffer tank of gas lift; 1007. third-stage air intake buffer tank of gas lift; 1008. third-stage exhaust buffer tank of gas lift; 1009. connecting part; 1010. fixing part; 11. first middle body component; 12. second middle body component.

[0026] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The same or similar numbers correspond to the same or similar parts. The terms describing the positional relationship in the drawings are only used for illustrative purposes and should not be construed as limitations on this patent. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0028] The technical solution of the present utility model is described in detail below in conjunction with the specific drawings.

[0029] like Figure 1-Figure 5As shown, a natural gas gathering and transmission gas lifting integrated equipment includes a base 1, a motor 2, a coupling 4, a compressor main engine 6, a gathering and transmission first-stage compression cylinder assembly 7, a gathering and transmission second-stage compression cylinder assembly 8, a gas lifting first-stage compression cylinder assembly 9, and a gas lifting second- and third-stage compression cylinder assembly 10; wherein,

[0030] The motor 2 is mounted on the base 1 by bolts 3, one end of the coupling 4 is connected to the motor 2, and the other end is connected to the compressor main unit 6, and the bottom of the compressor main unit 6 is mounted on the base 1 by bolts; the two sides of the compressor main unit 6 are respectively connected with a first middle body component 11 and a second middle body component 12 by bolts, the first-stage gathering and transportation compression cylinder assembly 7 and the second-stage gathering and transportation compression cylinder assembly 8 are arranged on both sides of the compressor main unit 6 through the first middle body component 11, and the first-stage gas lift compression cylinder assembly 9 and the second- and third-stage gas lift compression cylinder assembly 10 are arranged on both sides of the compressor main unit 6 through the second middle body component 12.

[0031] In a specific embodiment, a protective cover 5 is provided on the outer shell of the coupling 4 to ensure the normal operation of the coupling 4 and prevent people and other objects from colliding with the coupling 4. The protective cover 5 is fixed to the machine base 1 by bolts.

[0032] In a specific embodiment, the gathering and transporting first-stage compression cylinder assembly 7 includes a gathering and transporting first-stage compression cylinder 701, a first piston rod 702, a first cylinder end cover 703 and a first cylinder cover 704. The first piston rod 702 is arranged in the gathering and transporting first-stage compression cylinder 701, and the first cylinder end cover 703 and the first cylinder cover 704 are respectively arranged at both ends of the gathering and transporting first-stage compression cylinder 701.

[0033] In a specific embodiment, the gathering and transporting two-stage compression cylinder assembly 8 includes a gathering and transporting two-stage compression cylinder 801, a second piston rod 802, a second cylinder end cover 803 and a second cylinder cover 804. The second piston rod 802 is arranged in the gathering and transporting two-stage compression cylinder 801, and the second cylinder end cover 803 and the second cylinder cover 804 are respectively arranged at both ends of the gathering and transporting two-stage compression cylinder 801.

[0034] In a specific embodiment, the gas lift first-stage compression cylinder assembly 9 includes a gas lift first-stage compression cylinder 901, a third piston rod 902 and a third cylinder head 903. The third piston rod 902 is arranged in the gas lift first-stage compression cylinder 901, and the third cylinder head 903 is provided at the end position of the gas lift first-stage compression cylinder 901.

[0035] In a specific embodiment, the gas lift two-stage and three-stage compression cylinder assembly 10 includes a gas lift two-stage compression cylinder 1001, a gas lift three-stage compression cylinder 1002, a fourth piston rod 1003 and a fourth cylinder head 1004. The gas lift three-stage compression cylinder 1002 is connected to the rear end of the gas lift two-stage compression cylinder 1001, the fourth piston rod 1003 is arranged in the gas lift two-stage compression cylinder 1001 and the gas lift three-stage compression cylinder 1002, and the rear end of the gas lift three-stage compression cylinder 1002 is provided with a fourth cylinder head 1004.

[0036] In a specific embodiment, a connecting portion 1009 is provided at the front end of the gas lift three-stage compression cylinder 1002, and the connecting portion 1009 extends into the two-stage compression cylinder 1001. A fixing portion 1010 is protrudingly provided on the side. The gas lift three-stage compression cylinder 1002 is fixed to the rear end of the gas lift two-stage compression cylinder 1001 by passing bolts through the fixing portion 1010.

[0037] In a specific embodiment, the outer side of the gathering and transportation first-stage compression cylinder 701 is fixedly connected with a gathering and transportation first-stage air intake buffer tank 705 and a gathering and transportation first-stage exhaust buffer tank 706 by bolts; the outer side of the gathering and transportation second-stage compression cylinder 801 is fixedly connected with a gathering and transportation second-stage air intake buffer tank 805 and a gathering and transportation second-stage exhaust buffer tank 806 by bolts.

[0038] In a specific embodiment, the outer side of the gas lift first-stage compression cylinder 901 is fixedly connected with a gas lift first-stage air intake buffer tank 904 and a gas lift first-stage exhaust buffer tank 905 by bolts; the outer side of the gas lift second-stage compression cylinder 1001 is fixedly connected with a gas lift second-stage air intake buffer tank 1005 and a gas lift second-stage exhaust buffer tank 1006 by bolts; the outer side of the gas lift third-stage compression cylinder 1002 is fixedly connected with a gas lift third-stage air intake buffer tank 1007 and a gas lift third-stage exhaust buffer tank 1008 by bolts.

[0039] The following is a detailed description of the operation mode of the above-mentioned natural gas gathering, transmission and lifting integrated equipment:

[0040] (1) When the system is a standard two-stage booster gathering and transportation system, the gas flow direction of the gathering and transportation part is:

[0041] Gathering and transporting first-stage air intake buffer tank → Gathering and transporting first-stage compression cylinder → Gathering and transporting first-stage exhaust buffer tank → Gathering and transporting second-stage air intake buffer tank → Gathering and transporting second-stage compression cylinder → Gathering and transporting second-stage exhaust buffer tank → Gathering and transporting exhaust check valve → Exhaust manual ball valve → Gathering and transporting exhaust port.

[0042] (2) When the gas well platform only needs one stage of compression to reach the external transmission pressure, in order to increase the gas well production, a double-stage compression solution can be considered. When this solution is adopted, the gas only needs to pass through one gathering and transmission compression cylinder.

[0043] (3) When the system is a standard gas lift system, the gas flow direction of the gas lift part is:

[0044] Gas lift first-stage air intake buffer tank → gas lift first-stage compression cylinder → gas lift first-stage exhaust buffer tank → gas lift second-stage air intake buffer tank → gas lift second-stage compression cylinder → gas lift second-stage exhaust buffer tank → gas lift third-stage air intake buffer tank → gas lift third-stage compression cylinder → gas lift third-stage exhaust buffer tank → gas lift exhaust check valve → gas lift exhaust manual ball valve → high-pressure gas lift exhaust port.

[0045] (4) When the source gas pressure of the gas well is too low, the gas lift compression cannot meet the pressure required for gas lift. The gas flow direction of the gas lift part is:

[0046] Gas lift first-stage air intake buffer tank → gas lift first-stage compression cylinder → gas lift first-stage exhaust buffer tank → gas lift second-stage air intake buffer tank → gas lift second-stage compression cylinder → gas lift second-stage exhaust buffer tank → gas lift third-stage air intake buffer tank → gas lift third-stage compression cylinder → gas lift third-stage exhaust buffer tank → gas lift exhaust check valve → gas lift exhaust manual ball valve → high-pressure gas lift exhaust port.

[0047] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A natural gas gathering, transmission and lifting integrated equipment, characterized in that: It comprises a machine base (1), a motor (2), a coupling (4), a compressor main engine (6), a first-stage gathering and transportation compression cylinder assembly (7), a second-stage gathering and transportation compression cylinder assembly (8), a first-stage gas lift compression cylinder assembly (9), and second- and third-stage gas lift compression cylinder assemblies (10); wherein: The motor (2) is mounted on the machine base (1) by means of bolts (3); one end of the coupling (4) is connected to the motor (2) and the other end is connected to the compressor main unit (6); the bottom of the compressor main unit (6) is mounted on the machine base (1) by means of bolts; the two sides of the compressor main unit (6) are respectively connected to a first middle body component (11) and a second middle body component (12) by means of bolts; the first-stage gathering and transmission compression cylinder assembly (7) and the second-stage gathering and transmission compression cylinder assembly (8) are arranged on the two sides of the compressor main unit (6) by means of the first middle body component (11); and the first-stage gas lift compression cylinder assembly (9) and the second- and third-stage gas lift compression cylinder assembly (10) are arranged on the two sides of the compressor main unit (6) by means of the second middle body component (12).

2. The natural gas gathering, transmission and lifting integrated equipment according to claim 1, characterized in that: The outer shell of the coupling (4) is provided with a protective cover (5) to ensure the normal operation of the coupling (4) and prevent people and objects from colliding with the coupling (4). The protective cover (5) is fixed to the machine base (1) by bolts.

3. The natural gas gathering, transmission and lifting integrated equipment according to claim 1, characterized in that: The gathering and transporting first-stage compression cylinder assembly (7) comprises a gathering and transporting first-stage compression cylinder (701), a first piston rod (702), a first cylinder end cover (703) and a first cylinder head (704); the first piston rod (702) is arranged in the gathering and transporting first-stage compression cylinder (701); and the first cylinder end cover (703) and the first cylinder head (704) are respectively arranged at both ends of the gathering and transporting first-stage compression cylinder (701).

4. The integrated natural gas gathering, transmission and lifting equipment according to claim 3, characterized in that: The gathering and transporting two-stage compression cylinder assembly (8) comprises a gathering and transporting two-stage compression cylinder (801), a second piston rod (802), a second cylinder end cover (803) and a second cylinder head (804); the second piston rod (802) is arranged in the gathering and transporting two-stage compression cylinder (801); and the second cylinder end cover (803) and the second cylinder head (804) are respectively arranged at both ends of the gathering and transporting two-stage compression cylinder (801).

5. The natural gas gathering, transmission and lifting integrated equipment according to claim 1, characterized in that: The gas lift first-stage compression cylinder assembly (9) comprises a gas lift first-stage compression cylinder (901), a third piston rod (902) and a third cylinder head (903); the third piston rod (902) is arranged in the gas lift first-stage compression cylinder (901); and the third cylinder head (903) is arranged at the end position of the gas lift first-stage compression cylinder (901).

6. The natural gas gathering, transmission and lifting integrated equipment according to claim 5, characterized in that: The gas lift two-stage and three-stage compression cylinder assembly (10) comprises a gas lift two-stage compression cylinder (1001), a gas lift three-stage compression cylinder (1002), a fourth piston rod (1003) and a fourth cylinder head (1004); the gas lift three-stage compression cylinder (1002) is connected to the rear end of the gas lift two-stage compression cylinder (1001); the fourth piston rod (1003) is arranged in the gas lift two-stage compression cylinder (1001) and the gas lift three-stage compression cylinder (1002); and the rear end of the gas lift three-stage compression cylinder (1002) is provided with a fourth cylinder head (1004).

7. The integrated natural gas gathering, transmission and lifting equipment according to claim 6, characterized in that: The front end of the gas lift three-stage compression cylinder (1002) is provided with a connecting portion (1009), which extends into the gas lift two-stage compression cylinder (1001), and a fixing portion (1010) is protrudingly provided on the side. The gas lift three-stage compression cylinder (1002) is fixed to the rear end of the gas lift two-stage compression cylinder (1001) by passing a bolt through the fixing portion (1010).

8. The natural gas gathering, transmission and lifting integrated equipment according to claim 4, characterized in that: The outer side of the first-stage gathering and transportation compression cylinder (701) is fixedly connected to a first-stage gathering and transportation air intake buffer tank (705) and a first-stage gathering and transportation exhaust buffer tank (706) by bolts; the outer side of the second-stage gathering and transportation compression cylinder (801) is fixedly connected to a second-stage gathering and transportation air intake buffer tank (805) and a second-stage gathering and transportation exhaust buffer tank (806) by bolts.

9. The integrated natural gas gathering, transmission and lifting equipment according to claim 6, characterized in that: The outer side of the gas lift first-stage compression cylinder (901) is fixedly connected with a gas lift first-stage air intake buffer tank (904) and a gas lift first-stage exhaust buffer tank (905) by bolts; the outer side of the gas lift second-stage compression cylinder (1001) is fixedly connected with a gas lift second-stage air intake buffer tank (1005) and a gas lift second-stage exhaust buffer tank (1006) by bolts; the outer side of the gas lift third-stage compression cylinder (1002) is fixedly connected with a gas lift third-stage air intake buffer tank (1007) and a gas lift third-stage exhaust buffer tank (1008) by bolts.

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