Underwater production systems typically rely on their own pressure for extraction. For some few underwater production systems, it is necessary to use water/gas injection or underwater booster pumps to maintain system pressure. Developing certain underwater production systems with deep water depth, heavy heavy oil, small reservoir reserves, unknown reserves or low recovery rates, low/extremely high fluid pressure, flow guarantee requirements, long return distance, and mature use of Phase I booster pumps can consider using underwater booster pumps placed on the seabed for development. The use of underwater booster pumps for oil and gas development can effectively increase oil recovery, promote production, and simplify infrastructure such as upper platforms.

水下增壓泵在水下生產(chǎn)系統(tǒng)中的應用

The Application of Underwater Booster Pump in Underwater Production System

某油田水下生產(chǎn)系統(tǒng)包括3口水下采油樹，水深約500米，油氣產(chǎn)出物回接至某上部海上平臺。采用水下生產(chǎn)系統(tǒng)開發(fā)方案，采用水下增壓泵舉升的采油方式，可實現(xiàn)油田的高速高效開發(fā)，提高采收率。某油田地質(zhì)油藏特征表明，砂巖油藏物性好、產(chǎn)能高、地層能量充沛，利用地層能量將流體舉升至海底，再利用增壓泵進行開采。

The underwater production system of a certain oilfield includes three underwater Christmas trees, with a water depth of about 500 meters. The oil and gas production is connected back to an upper offshore platform. The use of an underwater production system development plan and the use of an underwater booster pump lifting oil extraction method can achieve high-speed and efficient development of the oil field and improve oil recovery. The geological reservoir characteristics of a certain oilfield indicate that sandstone reservoirs have good physical properties, high production capacity, and abundant formation energy. The formation energy is used to lift the fluid to the seabed, and then a booster pump is used for production.

水下增壓泵總體要求：

Overall requirements for underwater booster pumps:

水下增壓泵系統(tǒng)包括集成在水下管匯上的水下增壓泵模塊、布置在上部平臺上的增壓泵的相關(guān)動力和控制設(shè)備，包括MCS,EPU,VFD,HPU，BPU(隔離液單元)等。以及臍帶纜中與增壓泵相關(guān)的組成部分，增壓泵操作、安裝、回收專用工具等。

The underwater booster pump system includes an integrated underwater booster pump module on the underwater manifold, and the related power and control equipment of the booster pump arranged on the upper platform, including MCS, EPU, VFD, HPU, BPU (isolation fluid unit), etc. And the components related to the booster pump in the umbilical cable, as well as the special tools for operating, installing, and recycling the booster pump.

水下增壓泵模塊集成在水下管匯上，水下增壓泵模塊設(shè)計為可回收形式，可提升至水面上進行維修，并使用ROV進行連接和解脫。水下增壓泵應設(shè)計適應水深。根據(jù)某油田現(xiàn)在油藏配產(chǎn)和操作條件，增壓泵輸送過程中不會出現(xiàn)氣體，水下增壓泵采用單相泵。單相泵能夠適應的GVF（gas volume fraction）范圍為0~10%。

The underwater booster pump module is integrated on the underwater manifold, and is designed as a recyclable form that can be lifted to the surface for maintenance, and connected and disengaged using ROV. The underwater booster pump should be designed to adapt to water depth. According to the current production allocation and operating conditions of a certain oil field, gas will not appear during the transportation process of the booster pump, and the underwater booster pump adopts a single-phase pump. The range of GVF (gas volume fraction) that single-phase pumps can adapt to is 0-10%.

在水下增壓泵維護方面，應了解增壓泵的水下維護空間、安裝維修工具等需求，將在設(shè)計中予以體現(xiàn)。

In terms of underwater booster pump maintenance, it is necessary to understand the underwater maintenance space, installation and repair tools, and other requirements of the booster pump, which will be reflected in the design.

水下增壓泵模塊設(shè)計：

Design of underwater booster pump module:

某油田增壓泵模塊的尺寸約為4mX3.5mX6m，重量約為50噸。水下整個增壓泵模塊包括泵體、馬達箱、泵工藝管線接口、控制接口/隔離液接口/HIGH VOLTAGE接口的ROV操作面板的模塊結(jié)構(gòu)。

The size of the booster pump module in a certain oilfield is about 4mX3.5mX6m, and the weight is about 50 tons. The entire underwater booster pump module includes the module structure of the ROV operation panel, including the pump body, gearbox, pump process pipeline interface, control interface/isolation liquid interface/HIGH VOLTAGE interface.

水下增壓泵采用立式泵，泵軸和馬達豎直安裝，馬達箱位于泵體上方。馬達配置上部組塊上的VFD，以滿足水下增壓泵設(shè)計年限內(nèi)的各種工況。

The underwater booster pump adopts a vertical pump, with the pump shaft and motor installed vertically, and the motor box located above the pump body. The motor is equipped with VFD on the upper module to meet various operating conditions within the design life of the underwater booster pump.

水下增壓泵的工藝進出口管線接口位于泵體正下方，增壓泵進出口管線采用水下垂直連接器與管匯上管線接口進行快速精準連接，同時方便提升水下增壓泵時與管匯上管線解脫。

The process inlet and outlet pipeline interface of the underwater booster pump is located directly below the pump body. The inlet and outlet pipelines of the booster pump use underwater vertical connectors to quickly and accurately connect with the pipeline interface on the manifold, while facilitating the disconnection from the pipeline on the manifold when lifting the underwater booster pump.

水下增壓泵ROV操作面板全部設(shè)置同一面上，以方便ROV水下連接及操作。操作面板包括控制電飛線、液壓飛線（包括液壓/化學藥劑）、隔離液飛線、HIGH VOLTAGE飛線等接口。

The ROV operation panels of the underwater booster pump are all set on the same side to facilitate underwater connection and operation of the ROV. The operation panel includes interfaces such as control electric flying wires, hydraulic flying wires (including hydraulic/chemical agents), isolation liquid flying wires, and HIGH VOLTAGE flying wires.

水下增壓泵ROV操作面板一側(cè)的管匯保護罩為敞開式設(shè)計，而其它3面均可設(shè)計為用保護罩進行保護，以極大限度地保護管匯內(nèi)部設(shè)施和泵體。增壓泵設(shè)置ROV操作抓手，ROV操作面板應方便ROV連接及操作，應位于1.5米泥線以上，并且需要考慮ROV操作空間。

The manifold protection cover on one side of the ROV operation panel of the underwater booster pump is designed to be open, while the other three sides can be designed to be protected with protective covers to greatly protect the internal facilities and pump body of the manifold. The booster pump should be equipped with an ROV operating handle, and the ROV operating panel should be convenient for ROV connection and operation. It should be located above the 1.5 meter mud line and need to consider the ROV operating space.

水下增壓泵頂部設(shè)有吊耳，由于水下增壓泵維修時需要提升，應在泵體上方的管匯保護罩上設(shè)置頂部開門，實現(xiàn)泵體提升及保護泵體的作用。水下增壓泵模塊設(shè)置導向桿。

The top of the underwater booster pump is equipped with lifting eyes. Due to the need for lifting during maintenance of the underwater booster pump, a top door should be installed on the protective cover of the manifold above the pump body to achieve the function of lifting and protecting the pump body. The underwater booster pump module is equipped with a guide rod.