Deepwater seabed oil and water separation and reinjection device

Abstract

The invention relates to a deepwater seabed oil and water separation and reinjection device which comprises a base platform, an upper support, a lower support, a separator, a buffer tank and a booster reinjection pump. The separator, the buffer tank and the booster reinjection pump are arranged on the base platform; a rear gas outlet pipeline of the separator is mounted on the top of the rear of the separator; the buffer tank is close to a water outlet pipeline of the separator, the booster reinjection pump is close to an inlet pipeline of the separator, the water outlet pipeline of the separator is connected with the buffer tank and extends into the buffer tank, the buffer tank is connected with the booster reinjection pump by an outlet pipeline of the buffer tank, and the booster reinjection pump drains boosted water via an outlet pipeline. The deepwater seabed oil and water separation and reinjection device has the advantages that the device is mounted in deep sea water, produced liquid of wells does not need to be lifted to an offshore platform to be processed, accordingly, occupation of precious platform areas can be prevented, and a large quantity of energy can be saved for the oil wells positioned on seabed at the depth of thousands of meters; static pressures of risers and back pressures of wellheads can be greatly lowered, risks of pipeline leakage, deformation and the like can be reduced, and the deepwater seabed oil and water separation and reinjection device is favorable for stabilizing production.

Description

technical field

[0001] The invention belongs to the field of offshore oil and gas field development, and in particular relates to a deep-water seabed oil-water separation and reinjection device. Background technique

[0002] As the most important strategic material, petroleum occupies a vital position in the energy systems of various countries. As onshore oilfields have entered the middle and late stage of development, the development and exploitation of deep-sea oilfields has gradually become the most concerned area of ​​the global oil industry. Offshore oil and deep water are the main replacement areas for future world energy, so it is necessary to intensify the development of offshore oil and gas resources.

[0003] Oil-water separation in offshore oilfields is the process of separating and treating the oil-water mixture produced by subsea oil wells. In the planning and design stage of subsea oilfield development, oil-water separation is often in a secondary position, bu...

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