Cooling water system for oil field yield increasing ship

Abstract

The utility model discloses a cooling water system for an oil field yield increasing ship. The cooling water system comprises a plurality of fracturing pumps driven by a motor, each fracturing pump is connected with a diesel generating set for independently supplying power to the fracturing pump; each diesel generating set is provided with a cooling water unit for independently cooling the diesel generating set; the number of the cooling water units is the same as that of the diesel generating sets; the cooling water unit comprises a fresh water cooling pipeline, a seawater cooling pipeline and a cooler. According to the utility model, the operation safety and efficiency can be effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding technology, and in particular to a cooling water system for an oilfield production enhancement vessel. Background Technology

[0002] Currently, there are no truly dedicated oilfield production enhancement vessels in China. Existing production enhancement operations often require chartering supply vessels or similar ships to install specialized equipment for acidizing, fracturing, and other operations on their open decks. Due to the complexity of the operations, the numerous equipment pipelines, and the large space occupied by diesel engines (often occupying the entire deck), escape routes for personnel on board cannot be guaranteed, resulting in low operational efficiency and capacity. As the demand for fracturing operations gradually increases, the required fracturing pump power also increases, creating a certain market demand for dedicated oilfield production enhancement vessels using electrically driven fracturing pumps.

[0003] Specialized oilfield production enhancement vessels represent a new type of marine technology, employing integrated power stations to drive operational equipment and other marine equipment, such as propulsion systems and auxiliary equipment. In existing technologies, the power plants of electrically propelled ships consist of several diesel generator sets housed in the engine room. The cooling water system is typically divided into one or two groups based on the operating conditions of the generator sets, with each group cooling multiple generator sets. This type of cooling water system has low redundancy.

[0004] The redundancy requirements for the operating equipment systems and power plants of dedicated oilfield production enhancement vessels are relatively high. These vessels utilize a cooling water system; if a pipeline or piece of equipment in this system fails, multiple corresponding diesel generator sets will become inoperable, affecting the continuity of offshore oilfield production enhancement operations, creating significant safety hazards, and resulting in substantial economic losses. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the above-mentioned defects in the existing technology and provide a cooling water system for oilfield production enhancement vessels.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] A cooling water system for an oilfield production enhancement vessel includes several electric motor-driven fracturing pumps; each fracturing pump is connected to a diesel generator set that provides power to the pump individually; each diesel generator set is equipped with a cooling water unit for cooling the generator set individually; the number of cooling water units is the same as the number of diesel generator sets; each cooling water unit includes freshwater cooling pipes for cooling the diesel generator sets, seawater cooling pipes for cooling the freshwater cooling pipes, and a cooler for heat exchange between the seawater cooling pipes and the freshwater cooling pipes; both the seawater cooling pipes and the freshwater cooling pipes pass through the cooler.

[0008] Furthermore, the cooling water unit also includes a cooling freshwater tank for supplying freshwater to the freshwater cooling pipeline and a cooling freshwater pump for making the freshwater flow in the freshwater cooling pipeline.

[0009] Furthermore, a first shut-off valve is installed between the cooling freshwater tank and the freshwater cooling pipeline.

[0010] Furthermore, the seawater cooling pipeline is equipped with a seawater tank for supplying seawater to the seawater cooling pipeline and a cooling seawater pump for making the seawater in the seawater cooling pipeline flow.

[0011] Furthermore, a second shut-off valve is installed on the seawater cooling pipeline between the cooling seawater pump and the seawater tank.

[0012] Furthermore, the seawater tank is equipped with a seabed grille.

[0013] Furthermore, the inlet end of the seawater cooling pipe is connected to the seawater tank, and the outlet end of the seawater cooling pipe is located on the side of the ship.

[0014] Furthermore, a shut-off check valve is installed at the outlet end of the seawater cooling pipeline.

[0015] Furthermore, the seawater tanks of each cooling water unit are connected by seawater pipes.

[0016] Furthermore, the cooling water system for the oilfield production enhancement vessel also includes a switchboard, to which the diesel generator set and fracturing pump are connected.

[0017] The beneficial effects of this utility model are as follows: The technical solution of this utility model has a high degree of redundancy in the cooling water system. The cooling water system of each diesel generator set is set independently, so the normal operation of other diesel generator sets will not be affected by the failure of a single device or a single point of failure in the system, thus effectively ensuring operational safety and efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention. Detailed Implementation

[0019] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0020] like Figure 1 As shown, a cooling water system for an oilfield production enhancement vessel includes several electric-driven fracturing pumps 14; each fracturing pump 14 is connected to a diesel generator set 13 that provides power to the fracturing pump individually; each diesel generator set is provided with a cooling water unit 20 for cooling the diesel generator set individually; the number of cooling water units is the same as the number of diesel generator sets.

[0021] The cooling water unit 20 includes a fresh water cooling pipe 21 for cooling the diesel generator set, a seawater cooling pipe 22 for cooling the fresh water cooling pipe, and a cooler 12 for heat exchange between the seawater cooling pipe and the fresh water cooling pipe; both the seawater cooling pipe 22 and the fresh water cooling pipe 21 are installed in the cooler 12.

[0022] The cooling water unit 20 also includes a cooling freshwater tank 19 for supplying freshwater to the freshwater cooling pipeline and a cooling freshwater pump 16 for making the freshwater flow in the freshwater cooling pipeline.

[0023] A first shut-off valve 23 is provided between the cooling freshwater tank 19 and the freshwater cooling pipe 21. Freshwater flows from the cooling freshwater tank into the freshwater cooling pipe. After the first shut-off valve is closed, the freshwater cooling pipe forms a cooling water circuit.

[0024] The seawater cooling pipe 22 is equipped with a seawater tank 10 for supplying seawater to the seawater cooling pipe and a cooling seawater pump 11 for making the seawater in the seawater cooling pipe flow.

[0025] A second shut-off valve 24 is installed on the seawater cooling pipeline between the cooling seawater pump 11 and the seawater tank 10.

[0026] The seawater tank 10 is equipped with a seabed grid 26.

[0027] The inlet of the seawater cooling pipe 22 is connected to the seawater tank 10, and the outlet of the seawater cooling pipe 22 is located on the side of the ship. A shut-off check valve 25 is provided at the outlet of the seawater cooling pipe 22.

[0028] The seawater tanks 10 of each cooling water unit are connected by seawater pipes 27.

[0029] The cooling water system for the oilfield production enhancement vessel also includes a switchboard 15, to which the diesel generator set 13 and the fracturing pump 14 are connected.

[0030] Figure 1 In the diagram, arrows indicate the direction of cooling water flow; dashed lines represent cables.

[0031] Each diesel generator set provides power to each fracturing pump, forming a one-to-one correspondence. Freshwater cooling pipes cool the diesel generator sets. In the cooler, seawater from the seawater cooling pipes and freshwater from the freshwater cooling pipes exchange heat; the seawater in the seawater cooling pipes cools the freshwater in the freshwater cooling pipes. Cooling seawater pumps pump seawater from the seawater tank, and the seawater flows through the cooler before being discharged overboard.

[0032] The fracturing workshop on a dedicated oilfield production enhancement vessel is equipped with multiple electrically driven fracturing pumps, and the engine room houses the same number of diesel generator sets. The engine room also contains multiple cooling water units, each with its own piping and valves to cool a single diesel generator set. The number of cooling water units equals the number of diesel generator sets. Each cooling water unit has dedicated piping and valves to cool a specific diesel generator set, forming several independent cooling water units. Both the seawater cooling pump and the freshwater cooling pump are powered by the corresponding diesel generator set within their respective cooling water unit.

[0033] The cooling water system of this invention is suitable for dedicated oilfield production enhancement vessels. During production enhancement operations, these vessels require continuous and stable operation. The technical solution of this invention features a highly redundant cooling water system, with each diesel generator set having an independently configured cooling water system. This prevents the failure of a single unit or a single point of failure in the system from affecting the normal operation of other diesel generator sets, effectively ensuring operational safety and efficiency.

[0034] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A cooling water system for an oilfield production enhancement vessel, comprising a plurality of electrically driven fracturing pumps; characterized in that, Each fracturing pump is connected to a diesel generator set that provides power to the fracturing pump; each diesel generator set is equipped with a cooling water unit for cooling the diesel generator set individually; the number of cooling water units is the same as the number of diesel generator sets; the cooling water unit includes fresh water cooling pipes for cooling the diesel generator set, seawater cooling pipes for cooling the fresh water cooling pipes, and a cooler for heat exchange between the seawater cooling pipes and the fresh water cooling pipes; both the seawater cooling pipes and the fresh water cooling pipes pass through the cooler.

2. The cooling water system for an oilfield production enhancement vessel as described in claim 1, characterized in that, The cooling water unit also includes a cooling freshwater tank for supplying freshwater to the freshwater cooling pipeline and a cooling freshwater pump for making the freshwater flow in the freshwater cooling pipeline.

3. The cooling water system for an oilfield production enhancement vessel as described in claim 2, characterized in that, A first shut-off valve is installed between the cooling freshwater tank and the freshwater cooling pipeline.

4. The cooling water system for an oilfield production enhancement vessel as described in claim 1, characterized in that, The seawater cooling pipeline is equipped with a seawater tank for supplying seawater to the pipeline and a cooling seawater pump for circulating the seawater within the pipeline.

5. The cooling water system for an oilfield production enhancement vessel as described in claim 4, characterized in that, A second shut-off valve is installed on the seawater cooling pipeline between the cooling seawater pump and the seawater tank.

6. The cooling water system for an oilfield production enhancement vessel as described in claim 4, characterized in that, The seawater tank is equipped with a seabed grid.

7. The cooling water system for an oilfield production enhancement vessel as described in claim 4, characterized in that, The inlet end of the seawater cooling pipe is connected to the seawater tank, and the outlet end of the seawater cooling pipe is located on the side of the ship.

8. The cooling water system for an oilfield production enhancement vessel as described in claim 7, characterized in that, The outlet end of the seawater cooling pipeline is equipped with a shut-off check valve.

9. The cooling water system for an oilfield production enhancement vessel as described in claim 7, characterized in that, The seawater tanks of each cooling water unit are connected by seawater pipes.

10. The cooling water system for an oilfield production enhancement vessel as described in claim 1, characterized in that, The cooling water system for the oilfield production enhancement vessel also includes a switchboard, to which the diesel generator set and fracturing pump are connected.

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