A compact underwater high integrity pressure protection system reinforcement zone device

Abstract

The present application relates to compact underwater high-integrity pressure protection system reinforcement zone device, including: installation chassis; Reinforcement zone pipeline, the reinforcement zone pipeline is adopted hard pipeline coiling, the reinforcement zone pipeline is fixedly installed on the installation chassis; Production well jumper connector, one end of the production well jumper connector is connected with production well jumper, the other end is connected with the inlet of the reinforcement zone pipeline; Tube cross pipe connector, one end of the tube cross pipe connector is connected with the outlet of the reinforcement zone pipeline, the other end is connected with the downstream low pressure manifold, the production well jumper connector and tube cross pipe connector are all installed on the installation chassis. The reinforcement zone device pipeline design pressure is high, and the pressure capacity is strong can satisfy the pressure demand of the pressure rise caused by downstream blockage in the execution shutdown process of SHIPPS, and then ensure the safety of underwater production facilities in the execution shutdown process.

Description

Technical Field

[0001] This invention belongs to the field of deepwater gas field development technology, specifically relating to a reinforced zone device for a compact underwater high integrity pressure protective system (SHIPPS). Background Technology

[0002] In deepwater gas field development, the shut-in pressure at the subsea wellhead is generally very high. During the process of connecting the subsea production system back to the platform for gathering and transportation, overpressure conditions may occur due to the following two types of accidents: (1) failure of the Christmas tree nozzles to fully open; (2) emergency shutdown of production caused by a process accident on the platform or blockage of the subsea pipeline by hydrates due to low transportation temperature. When an overpressure condition occurs, the pressure in the pipeline will accumulate to the shut-in pressure. Therefore, the design pressure of the cross-connectors, manifolds, and subsea production facilities between the subsea production wellhead and the platform shut-in valve is usually the maximum shut-in pressure of all single wells, i.e., the total pressure design.

[0003] Adopting a full-pressure design not only increases the weight of the manifold and the difficulty of installation, but also results in thicker walls for the reconnected subsea pipeline, making welding more difficult, reducing construction efficiency, and increasing gas field development costs. By using SHIPPS, the design pressure rating of subsea production facilities and subsea pipelines can be reduced.

[0004] SHIPPS is highly sensitive and safe; once the system pressure reaches the trigger pressure setpoint, SHIPPS will immediately shut down. During the SHIPPS shutdown process, there is a risk of low-temperature hydrates and wax blockage downstream of the SHIPPS. High-pressure fluid inrush can cause a rapid increase in pressure in the pipe section between the SHIPPS installation location and the blockage point. Therefore, an underwater reinforcement zone needs to be set downstream of the SHIPPS system isolation valve to ensure the safety of underwater production facilities during shutdown.

[0005] The downstream reinforcement zone pipeline of SHIPPS is typically 500-1000 meters long. Since steel materials cannot be laid in deep water, flexible hoses are generally used. However, flexible hoses cannot currently be domestically produced and must be imported, resulting in high costs and slow construction periods. Furthermore, using flexible hoses as the reinforcement zone pipeline material with existing technology occupies a large area of ​​seabed. Because a certain safety distance must be maintained between other underwater production facilities and the pipeline, this arrangement is detrimental to the installation and construction of both underwater production facilities and the pipeline, and also affects the safe positioning of the drilling vessel during subsequent adjustment well drilling. Summary of the Invention

[0006] To address the aforementioned problems, the purpose of this invention is to provide a compact SHIPPS reinforcement zone device. The pipeline in the SHIPPS reinforcement zone device is designed with high pressure to meet the pressure requirements caused by downstream blockage during the SHIPPS shutdown process.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] The present invention provides a compact underwater high integrity pressure protection system reinforcement zone device, comprising:

[0009] Install chassis;

[0010] The reinforced zone pipe is made of rigid pipe coiled together and is fixedly installed on the mounting base;

[0011] A production well crossover connector, one end of which is connected to the production well crossover connector and the other end of which is connected to the inlet of the reinforced zone pipeline;

[0012] Manifold jumper connector, one end of which is connected to the outlet of the reinforced zone pipeline and the other end of which is connected to the downstream low-pressure manifold, both the production well jumper connector and the manifold jumper connector are mounted on the mounting chassis.

[0013] Preferably, the production well crossover connector and the manifold crossover connector are installed in parallel at the same end of the mounting chassis.

[0014] Preferably, the system also includes several reinforced pipe bases, which are installed at intervals on the mounting chassis, and the reinforced pipes are supported by the reinforced pipe bases.

[0015] Preferably, lifting lugs are symmetrically installed on both sides of the mounting chassis.

[0016] Preferably, it further includes a partition and a fixing connector fixedly installed on the mounting chassis. The reinforced zone pipe is formed as including a first coil and a second coil that are interconnected. The first coil and the second coil are symmetrically installed on both sides of the partition. The first coil and the second coil are fixedly installed on both sides of the partition by the fixing connector.

[0017] Preferably, the fixing connector is a clamp.

[0018] Preferably, the reinforced zone pipe is made of coiled steel pipe.

[0019] Preferably, the mounting chassis also has a groove, and the reinforced area pipe is fixedly installed in the groove.

[0020] The present invention has the following advantages due to the adoption of the above technical solutions:

[0021] The high-pressure piping design of the SHIPPS reinforcement zone unit meets the pressure requirements caused by downstream blockage during SHIPPS shutdown. The compact SHIPPS reinforcement zone unit occupies little space, reducing the difficulty of subsea production facility construction and layout while also lowering gas field development costs. Compared to traditional subsea systems using flexible hoses as reinforcement zone piping materials, the compact SHIPPS reinforcement zone unit utilizes modular integration, reducing the seabed footprint. While maintaining safe distances, the compact SHIPPS reinforcement zone unit facilitates the layout of other subsea production facilities, minimizing interference with construction. The reinforcement zone piping does not require flexible hoses, eliminating the need for specialized hose-laying vessels. During subsequent adjustment well deployment, it facilitates drilling vessel positioning, reduces adjustment well reconnection distances and drilling footage, and improves drilling efficiency. Attached Figure Description

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0023] In the attached diagram:

[0024] Figure 1 This is a schematic diagram of the reinforced area device of the compact underwater high integrity pressure protection system provided by the present invention;

[0025] Figure 2 This is a front view of the reinforced area device of the compact underwater high integrity pressure protection system provided by the present invention;

[0026] Figure 3 This is a top view of the reinforced area device of the compact underwater high integrity pressure protection system provided by the present invention.

[0027] The markings in the attached diagram are as follows:

[0028] 101-Production well jumper connector; 102-Manifold jumper connector; 103-Reinforced zone pipe; 104-Reinforced zone pipe base; 105-Mounting chassis; 106-Baffle plate; 107-Clamp; 108-Lifting lug. Detailed Implementation

[0029] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the invention and to fully convey the scope of the invention to those skilled in the art.

[0030] Embodiments of the present invention provide a compact subsea high integrity pressure protection system reinforcement zone device. The pipeline in the SHIPPS reinforcement zone device is designed with high pressure to meet the pressure increase requirements caused by downstream blockage during SHIPPS shutdown. The compact SHIPPS reinforcement zone device occupies little space, reducing the difficulty of construction and layout of subsea production facilities while also lowering gas field development costs.

[0031] like Figures 1-3 As shown, the compact underwater high integrity pressure protection system reinforced zone device includes a mounting chassis 105 and reinforced zone piping 103, a production well crossover connector 101, and a manifold crossover connector 102 mounted on the mounting chassis 105. The reinforced zone piping 103 is made of rigid, coiled pipe. One end of the production well crossover connector 101 is connected to the production well crossover, and the other end is connected to the inlet of the reinforced zone piping 103. One end of the manifold crossover connector 102 is connected to the outlet of the reinforced zone piping 103, and the other end is connected to the downstream low-pressure manifold. Both the production well crossover connector 101 and the manifold crossover connector 102 are mounted on the mounting chassis 105. The reinforced zone device 103 has a high-pressure design and strong pressure-bearing capacity, forming a reinforced zone to meet the pressure increase demand caused by downstream blockage during SHIPPS shutdown, thus ensuring the safety of the underwater production facilities during shutdown.

[0032] Preferably, the reinforced zone pipe 103 is made of coiled steel pipe. Compared with the traditional use of flexible hoses as the reinforced zone pipe material in underwater applications, the compact SHIPPS reinforced zone device adopts modular integration, reduces the seabed area occupied, and does not require the use of special pipe-laying vessels for laying flexible hoses.

[0033] The production well jumper connector 101 and manifold jumper connector 102 are mounted in parallel at the same end of the mounting chassis 105. The parallel connectors facilitate quick connection between the compact SHIPPS reinforced zone device and the upstream and downstream jumpers. The production well jumper connector 101 and manifold jumper connector 102 can be quick-connect female connectors, while the quick-connect male connectors connect to the production well jumper and the downstream low-pressure manifold.

[0034] Furthermore, the reinforcement zone device 103 also includes a plurality of reinforcement zone pipe bases 104, which are spaced apart and mounted on the mounting base 105, and the reinforcement zone pipe 103 is supported by the reinforcement zone pipe bases 104.

[0035] Furthermore, lifting lugs 108 are symmetrically installed on both sides of the mounting chassis 105. The symmetrical lifting lugs 108 installed on the bottom mounting chassis 105 facilitate the overall installation and positioning of the compact SHIPPS reinforcement area device.

[0036] Furthermore, the reinforced zone device also includes a partition 106 and a fixing connector fixedly mounted on the mounting chassis 105. The reinforced zone pipe 103 is formed by including a first coil and a second coil that are interconnected. The first coil and the second coil are symmetrically mounted on both sides of the partition 106, and the first coil and the second coil are fixedly mounted on both sides of the partition 106 by the fixing connector. The fixing connector is preferably a clamp 107. The reinforced zone pipe 103 is fixed to the partition 106 by the clamp 107, which can reduce the impact of pipe vibration on the integrated module during production.

[0037] The mounting base 105 also has a groove, and the reinforced pipe 103 is fixedly installed in the groove. The mounting base 105 adopts a groove design to reduce the installation weight while ensuring the foundation bearing capacity.

[0038] The reinforced pipe base 104 and the mounting base 105 are preferably fixed by welding, the partition is preferably fixed to the mounting base 105 by welding, and the lifting lug 108 is preferably fixed to the mounting base 105 by welding.

[0039] The compact underwater high integrity pressure protection system reinforcement zone device provided by the present invention forms a reinforcement zone by designing the pipeline in the reinforcement zone device with high pressure and strong pressure bearing capacity. The reinforcement zone can meet the pressure demand caused by downstream blockage during the SHIPPS shutdown process, thereby ensuring the safety of underwater production facilities during the shutdown process.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A compact underwater high integrity pressure protection system reinforcement zone device, characterized in that, include: Install chassis; The reinforced zone pipe is made of rigid pipe coiled together and is fixedly installed on the mounting base; A production well crossover connector, one end of which is connected to the production well crossover connector and the other end of which is connected to the inlet of the reinforced zone pipeline; The manifold jumper connector has one end connected to the outlet of the reinforced zone pipeline and the other end connected to the downstream low-pressure manifold. Both the production well jumper connector and the manifold jumper connector are mounted on the mounting chassis. The production well jumper connector and the manifold jumper connector are installed in parallel on the same end of the mounting chassis and use parallel connectors to facilitate quick connection between the compact SHIPPS reinforced zone device and the upstream and downstream jumpers. The production well jumper connector and the manifold jumper connector are quick-connect female connectors, and the quick-connect male connectors are connected to the production well jumper and the downstream low-pressure manifold. It also includes a partition and a fixing connector that are fixedly installed on the mounting chassis. The reinforced zone pipe is formed as including a first coil and a second coil that are interconnected. The first coil and the second coil are symmetrically installed on both sides of the partition. The first coil and the second coil are fixedly installed on both sides of the partition by the fixing connector. The reinforced zone pipeline is made of coiled steel pipe, which can meet the pressure demand caused by downstream blockage during the SHIPPS shutdown process.

2. The reinforced zone device of the compact underwater high integrity pressure protection system according to claim 1, characterized in that, It also includes several reinforced pipe bases, which are installed at intervals on the mounting chassis, and the reinforced pipes are supported by the reinforced pipe bases.

3. The reinforced zone device of the compact underwater high integrity pressure protection system according to claim 1, characterized in that, The mounting chassis is also symmetrically equipped with lifting lugs on both sides.

4. The reinforced zone device of the compact underwater high integrity pressure protection system according to claim 1, characterized in that, The fixing connector is a clamp.

5. The reinforced zone device of the compact underwater high integrity pressure protection system according to claim 1, characterized in that, The mounting chassis also has a groove, and the reinforced area pipe is fixedly installed in the groove.

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