Shallow sea oil and gas production control device and installation method thereof

Abstract

The present invention relates to a shallow-water oil and gas production control device and an installation method thereof, comprising: an oil and gas production control module, a sealing fixing plate and a seabed fixing plane; the oil and gas production control module is sealed and fixed on the sealing fixing plate, for monitoring the working condition of the entire control device; at least one positioning joint is provided on each of the two opposite sides of the sealing fixing plate, and the positioning joint is used in conjunction with a fixing pin provided on the seabed fixing plane, for fixing the sealing fixing plate on the seabed fixing plane; the positioning joint comprises a fixing portion and a guide portion, the fixing portion is perpendicular to the sealing fixing plate, and is a tubular structure with one end closed and the other end open, and the open end faces downward; the guide portion is provided at the open end of the fixing portion, for guiding the fixing pin to be inserted into the fixing portion, and the top of the guide portion is located below the bottom surface of the sealing fixing plate. It only requires a simple sealing and positioning design, and does not require a professional lowering platform and a professional underwater robot, thereby saving costs.

Description

Technical Field

[0001] The invention relates to a shallow-water oil and gas production control device and an installation method thereof, belonging to the technical field of shallow-water oil and gas production. Background Art

[0002] The subsea control module (SCM) is a crucial component of the composite electro-hydraulic control system. It is used to generate data from subsea facilities and downhole data, and to control the opening and closing of subsea valves. It primarily generates data for internal pressure sensors, throttle position indicators, downstream pressure / temperature sensors, annular pressure sensors, downhole pressure / temperature sensors, upstream pressure / temperature sensors, multiphase flowmeters, chemical injection metering valves, corrosion detectors, and sand sensors, and transmits this information to the surface control station. Typically, the SCM is installed underwater using a complex and costly lowering platform. The hydraulic joints are then docked with the assistance of an underwater robot and secured using specialized locking tools. The oil and gas production control system employed in this method is complex, costly, and highly specialized, resulting in a lengthy installation process. Summary of the Invention

[0003] In response to the above problems, the purpose of the present invention is to provide a shallow-water oil and gas production control device and an installation method thereof, which only requires simple sealing and positioning design, and does not require a professional lowering platform and a professional underwater robot, thereby saving costs.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical scheme: a shallow-water oil and gas production control device, comprising: an oil and gas production control module, a sealing fixing plate and a seabed fixing plane; the oil and gas production control module is sealed and fixed on the sealing fixing plate, for monitoring the working condition of the entire control device; at least one positioning joint is provided on each of the two opposite sides of the sealing fixing plate, and the positioning joint is used in conjunction with a fixing pin provided on the seabed fixing plane to fix the sealing fixing plate on the seabed fixing plane; the positioning joint includes a fixing portion and a guide portion, the fixing portion is perpendicular to the sealing fixing plate, and is a tubular structure with one end closed and the other end open, and the open end faces downward; the guide portion is provided at the open end of the fixing portion, for guiding the fixing pin to be inserted into the fixing portion, and the top of the guide portion is located below the bottom surface of the sealing fixing plate.

[0005] Furthermore, at least one positioning joint is provided on each of the four side surfaces of the sealing fixing plate.

[0006] Furthermore, a number of evenly distributed auxiliary positioning pins are provided at the bottom of the sealing fixing plate. When the positioning joint is fixed to the fixing pins, the auxiliary positioning pins are inserted into the corresponding positioning pin holes on the seabed fixing plane to limit the horizontal freedom of the oil and gas production control module.

[0007] Furthermore, a locking member is provided on the side wall of the fixing portion for locking the fixing pin inserted into the fixing portion of the positioning joint, and the locking member is an elastic member.

[0008] Furthermore, a notch is provided on the side wall of the fixing portion, and an elastic member is arranged at the notch position. When the fixing pin is inserted into the fixing portion, the elastic member pops out and passes through the notch to be engaged in the groove on the fixing pin, thereby locking the fixing pin.

[0009] Furthermore, the guide portion is a bell mouth.

[0010] Furthermore, the oil and gas production control module includes a chassis and a dry electrical connector arranged on the top of the chassis; a pressure sensor, a throttle position indicator, a downstream pressure / temperature sensor, an annulus pressure sensor, a downhole pressure / temperature sensor, an upstream pressure / temperature sensor, a multiphase flow meter, a chemical injection metering valve, a corrosion detector and at least one of a sand sensor are arranged in the chassis; all devices in the chassis are connected to the dry electrical connector, which is used to transmit the data generated by each device to the dry electrical connector, and the dry electrical connector is used to transmit the oil and gas production control module to the host computer.

[0011] Furthermore, a protective cover is provided on the top of the chassis for protecting the dry electrical connector.

[0012] Furthermore, the control device also includes a number of wet electrical connectors, each of which is connected to a hydraulic connector. The wet electrical connectors and the hydraulic connectors are both fixed on a hydraulic connector mounting plate, and the hydraulic connector mounting plate is arranged vertically to the sealing fixing plate; the wet electrical connectors and the hydraulic connectors are used to realize electrical and hydraulic connections between the control device and other submarine oil and gas production equipment.

[0013] The present invention also discloses a method for installing a shallow-water oil and gas production control device, which uses any of the above-mentioned shallow-water oil and gas production control devices, including the following steps: S1 setting fixing pins and positioning pin holes on the seabed fixing plane, and determining the position of the seabed fixing plane; S2 fixing the oil and gas production control module on the sealing fixing plate, and lowering the sealing fixing plate to the position of the seabed fixing plane; S3 fine-tuning the position of the sealing fixing plate so that the positioning interface of the sealing fixing plate corresponds to the position of the fixing pin, and inserting the fixing pin into the positioning interface, and locking the fixing pin by a locking member; S4 inserting several auxiliary positioning pins of the sealing fixing plate into the positioning pin holes of the seabed fixing plane to fix the sealing fixing plate on the seabed fixing plane.

[0014] The present invention has the following advantages due to the adoption of the above technical solution:

[0015] 1. It only requires a simple sealing and positioning design, and then it is lowered to a fixed plane at the bottom of the shallow sea using a simple lowering tool. The oil and gas production control device and the fixed plane are then fixed horizontally and vertically. Then, with the assistance of a diver, electrical and hydraulic connections with other oil and gas production equipment are achieved. No professional lowering platform or professional underwater robot is required, thus saving costs. The shallow sea underwater control system fixed by the locking device of the present invention is firmly fixed and not easy to fall off, which can better meet the requirements of underwater data collection.

[0016] 2. The shallow-water oil and gas production control device of the present invention can be positioned and installed without the use of underwater robots and specialized lowering tools. It can be completed with the assistance of divers. This invention reduces the mechanical precision requirements for positioning and docking the shallow-water oil and gas production control device, enabling the use of simple guiding and docking locking methods, significantly reducing costs. The locking position eliminates the need to consider the separation force balance between the center and periphery of the force point. This frees up space for the processing, manufacturing, and design of the sealing plate, allowing the hydraulic valve block and hydraulic system to be combined in the same module, achieving higher density and smaller size. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 1 is a schematic structural diagram of a shallow-water oil and gas production control device in one embodiment of the present invention;

[0018] Figure 2 It is a side view of a shallow-water oil and gas production control device in one embodiment of the present invention.

[0019] Reference numerals:

[0020] 1-Sealing fixing plate; 2-Seabed fixing plane; 3-Fixing pin; 4-Fixing part; 5-Guide part; 6-Auxiliary positioning pin; 7-Locking piece; 8-Groove; 9-Chassis; 10-Dry type electrical connector; 11-Protective cover; 12-Electrical connection line; 13-Wet type electrical connector; 14-Hydraulic connector; 15-Hydraulic connector mounting plate. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical direction of the present invention, the present invention will be described in detail through specific embodiments. However, it should be understood that the provision of specific embodiments is only for a better understanding of the present invention and they should not be construed as limitations of the present invention. In the description of the present invention, it should be understood that the terms used are for descriptive purposes only and are not to be construed as indicating or implying relative importance.

[0022] Example 1

[0023] This embodiment discloses a shallow sea oil and gas production control device, such as Figure 1 、 2As shown, it includes: an oil and gas production control module, a sealing fixing plate 1 and a seabed fixing plane 2;

[0024] The oil and gas production control module is sealed and fixed on the sealing fixing plate 1 and is used to monitor the working status of the entire control device;

[0025] The sealing fixing plate 1 is used to fix and seal the oil and gas production control module, so that the oil and gas production control module is in a sealed state. The sealing fixing plate 1 is provided with a sealing ring groove that is consistent with the size of the oil and gas production control module, and a sealing ring is provided in the sealing ring groove.

[0026] At least one positioning joint is provided on each of the two opposite sides of the sealing fixing plate 1. The positioning joint cooperates with the fixing pin 3 provided on the seabed fixing plane 2 to fix the sealing fixing plate 1 on the seabed fixing plane 2.

[0027] The positioning joint includes a fixing part 4 and a guide part 5. The fixing part 4 is perpendicular to the sealing fixing plate 1 and is a tubular structure with one end closed and the other end open, and the open end faces downward; the guide part 5 is arranged at the open end of the fixing part 4, for guiding the fixing pin 3 to be inserted into the fixing part 4, and the top of the guide part 5 is located below the bottom surface of the sealing fixing plate 1.

[0028] In this embodiment, a positioning joint can be provided on each of the four sides of the sealing fixing plate 1 to further secure the sealing fixing plate 1. Furthermore, multiple positioning joints can be provided on each side of the sealing fixing plate 1. Furthermore, in this embodiment, a number of evenly distributed auxiliary positioning pins 6 are provided on the bottom of the sealing fixing plate 1. After the positioning joints are secured to the fixing pins 3, the auxiliary positioning pins 6 are inserted into corresponding positioning pin holes on the seabed fixing plane 2 to limit the horizontal freedom of the oil and gas production control module.

[0029] A locking member 7 is provided on the sidewall of the fixing portion 4 to lock the fixing pin 3 inserted into the fixing portion 4 of the positioning joint. This locking member 7 prevents the fixing pin 3 from moving vertically once it has entered the positioning interface, thereby preventing it from detaching from the fixing plate. The locking member 7 is an elastic member. A notch is provided on the sidewall of the fixing portion 4, and an elastic member is positioned within the notch. When the fixing pin 3 is inserted into the fixing portion 4, the elastic member pops out and passes through the notch to engage with the groove 8 on the fixing pin 3, thereby locking the fixing pin 3.

[0030] In this embodiment, the guide portion 5 is preferably a bell mouth, which enables the sealing fixing plate 1 to be more accurately positioned on the fixing pin 3 located on the seabed fixing plane 2 and guides the fixing pin 3 to smoothly enter the fixing portion 4 of the positioning interface.

[0031] The oil and gas production control module includes a chassis 9 and a dry electrical connector 10 arranged on the top of the chassis 9; the chassis 9 is equipped with at least one of a pressure sensor, a throttle position indicator, a downstream pressure / temperature sensor, an annular pressure sensor, a downhole pressure / temperature sensor, an upstream pressure / temperature sensor, a multiphase flowmeter, a chemical injection metering valve, a corrosion detector, and a sand sensor; all devices in the chassis 9 are connected to the dry electrical connector 10, which is used to transmit the data generated by each device to the dry electrical connector 10, and the dry electrical connector 10 is used to transmit the oil and gas production control module to the host computer. In this embodiment, there is at least one dry electrical connector 10, preferably multiple, and multiple in this context should be understood as two or more. The present invention does not limit the shape of the chassis 9, as long as it is a cavity with a certain internal space. However, in this embodiment, the chassis 9 is preferably square, and the chassis 9 is preferably made of a material that can withstand a water depth of 100 meters. A protective cover 11 is provided on the top of the chassis 9 to protect the dry electrical connector 10. The protective cover 11 not only protects the dry type electrical connector 10 but also protects the hydraulic pipeline and electrical connection line 12 thereunder to prevent water from entering. The pressure / temperature sensor herein includes a pressure sensor or a temperature sensor as well as a pressure sensor and a temperature sensor.

[0032] The control device also includes several wet electrical connectors 13. Dry electrical connectors 10 are assembled and connected to one end of each wet electrical connector 13 in a dry environment. Each wet electrical connector 13 is connected to a hydraulic connector 14. Both wet electrical connectors 13 and hydraulic connectors 14 are fixed to a hydraulic connector mounting plate 15. These wet electrical connectors 13 and hydraulic connectors 14 are used to establish electrical and hydraulic connections between the control device and other subsea oil and gas production equipment. Hydraulic connector mounting plate 15 is located on one side of the sealed chassis 9 of the oil and gas production control module and is perpendicular to the sealing mounting plate 1. In this embodiment, the hydraulic connector mounting plate 15 and the sealing mounting plate 1 are preferably integrally formed, and this integrally formed plate is L-shaped.

[0033] Example 2

[0034] Based on the same inventive concept, this embodiment discloses a method for installing a shallow-water oil and gas production control device, using any of the shallow-water oil and gas production control devices in the first embodiment, including the following steps:

[0035] S1 sets the fixing pin 3 and the positioning pin hole on the seabed fixing plane 2 and determines the position of the seabed fixing plane 2;

[0036] S2 fixes the oil and gas production control module on the sealing fixing plate 1, and lowers the sealing fixing plate 1 to the position of the seabed fixed plane 2; wherein, the sealing fixing plate 1 is lowered by a lowering tool;

[0037] S3 fine-tunes the position of the sealing fixing plate 1 so that the positioning interface of the sealing fixing plate 1 corresponds to the position of the fixing pin 3, inserts the fixing pin 3 into the positioning interface, and locks the fixing pin 3 with the locking member 7;

[0038] S4 inserts several auxiliary positioning pins of the sealing fixing plate 1 into the positioning pin holes of the seabed fixing plane 2 to fix the sealing fixing plate 1 on the seabed fixing plane 2.

[0039] With the assistance of a diver, the wet-type electrical connector 13 and the hydraulic connector 14 of the shallow-water oil and gas production control device are connected to the electrical connectors and hydraulic connectors located on other submarine oil and gas production facilities.

[0040] The shallow-water oil and gas production control device in the present invention is designed with simple sealing and positioning fixation, and is lowered to a fixed plane at the bottom of the shallow sea using a simple lowering tool, thereby achieving horizontal and vertical fixation of the oil and gas production control device and the fixed plane. With the assistance of divers, electrical and hydraulic connections with other oil and gas production equipment are achieved, without the need for a professional lower platform and professional underwater robot, thus saving costs.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the specific embodiments of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be included within the scope of protection of the claims of the present invention. The above content is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the present application, which should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A shallow-water oil and gas production control device, characterized in that: include: Oil and gas production control modules, sealing fixing plates and seabed fixing planes; The oil and gas production control module is sealed and fixed on the sealing fixing plate, and is used to monitor the working status of the entire control device. The sealing fixing plate is provided with a sealing ring groove with the same size as the oil and gas production control module, and a sealing ring is provided in the sealing ring groove; A positioning joint is provided on each of two opposite sides of the sealing fixing plate, and the positioning joint is used in conjunction with a fixing pin provided on the seabed fixing plane to fix the sealing fixing plate on the seabed fixing plane; The positioning joint includes a fixing portion and a guide portion. The fixing portion is perpendicular to the sealing fixing plate and is a tubular structure with one end closed and the other end open, with the open end facing downward. The guide portion is provided at the open end of the fixing portion and is used to guide the fixing pin to be inserted into the fixing portion. The top of the guide portion is located below the bottom surface of the sealing fixing plate. The bottom of the sealing fixing plate is provided with a number of evenly distributed auxiliary positioning pins. When the positioning joint is fixed to the fixing pins, the auxiliary positioning pins are inserted into the corresponding positioning pin holes on the seabed fixing plane to limit the horizontal freedom of the oil and gas production control module. A locking member is provided on the side wall of the fixing portion for locking a fixing pin inserted into the fixing portion of the positioning joint, and the locking member is an elastic member; A notch is provided on the side wall of the fixing portion, and the elastic member is arranged at the position of the notch. When the fixing pin is inserted into the fixing portion, the elastic member pops out and passes through the notch to be engaged with the groove on the fixing pin, thereby locking the fixing pin. The control device also includes several wet electrical connectors, each of which is connected to a hydraulic connector respectively. The wet electrical connectors and hydraulic connectors are both fixed on a hydraulic connector mounting plate, and the hydraulic connector mounting plate is arranged perpendicular to the sealing fixing plate; the wet electrical connectors and hydraulic connectors are used to realize electrical and hydraulic connections between the control device and other submarine oil and gas production equipment.

2. The shallow-water oil and gas production control device according to claim 1, characterized in that: The guide portion is a bell mouth.

3. The shallow-water oil and gas production control device according to claim 1, characterized in that: The oil and gas production control module includes a chassis and a dry electrical connector arranged on the top of the chassis; the chassis is provided with at least one of a pressure sensor, a throttle position indicator, a downstream pressure / temperature sensor, an annular pressure sensor, a downhole pressure / temperature sensor, an upstream pressure / temperature sensor, a multiphase flow meter, a chemical injection metering valve, a corrosion detector and a sand sensor; All devices in the chassis are connected to the dry electrical connector, which is used to transmit data generated by each device to the dry electrical connector, and the dry electrical connector is used to transmit the oil and gas production control module to the host computer.

4. The shallow-water oil and gas production control device according to claim 3, characterized in that: A protective cover for protecting the dry-type electrical connector is provided on the top of the chassis.

5. A method for installing a shallow-water oil and gas production control device, characterized in that: The shallow-water oil and gas production control device according to any one of claims 1 to 4 comprises the following steps: S1 sets fixing pins and positioning pin holes on the seabed fixing plane and determines the position of the seabed fixing plane; S2: fixing the oil and gas production control module on the sealing fixing plate, and lowering the sealing fixing plate to the position of the seabed fixed plane; S3: fine-adjusting the position of the sealing fixing plate so that the positioning interface of the sealing fixing plate corresponds to the position of the fixing pin, inserting the fixing pin into the positioning interface, and locking the fixing pin with a locking member; S4 inserts a plurality of auxiliary positioning pins of the sealing fixing plate into the positioning pin holes of the seabed fixing plane to fix the sealing fixing plate on the seabed fixing plane.

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