Inclined-type T-shaped pipe multistage high-voltage electric field seabed separation method

Abstract

The invention provides an inclined-type T-shaped pipe multistage high-voltage electric field seabed separation method which is applied to direct separation of seabed crude oil. A seabed separation system organically combines the inclined pipe type on-line separation technology with the multistage high-voltage electric field rapid and deep separation technology, and three-stage high efficiency separation of the seabed crude oil is achieved according to the special modes of three-stage series connection, inclined-type T-shaped pipe integration and well field type layout. A first-stage pipe type degasser adopts a double-layer thick wall pipe body to implement first-stage inclined pipe type gas-liquid separation; a second-stage inclined-type electric dehydrater adopts a composite insulating rod-shaped electrode and a split-type thick wall pipe body to implement second-stage annular high-voltage electric field rapid dehydration; and a third-stage inclined-type electric dehydrater adopts a plate-shaped bare electrode and a split-type thick wall pipe body to implement third-stage upper-strong lower-weak double electric field deep dehydration. A seabed out-transfer pump adopts a frequency conversion type double-screw pressurizing pump to pressurize the three-stage crude oil and outwards convey the three-stage crude oil, and a seabed separation control system realizes remote automatic control over three-stage seabed separation operation and guarantees the flow safety of three-stage separation.

Description

technical field [0001] The invention relates to a method for directly separating crude oil from the seabed of a deep-water oil and gas field in the field of ocean engineering, in particular to a method for separating crude oil from the seabed with an integrated multi-stage high-voltage electric field with inclined T-shaped tubes and a process flow thereof. Background technique [0002] "Submarine factory" is to use underwater equipment to directly separate and process the crude oil produced from the oil reservoir on the seabed, so as to improve the final recovery rate of deep water oil and gas, reduce the investment in offshore production and processing facilities, and realize deep water oil and gas economy. Efficient development. Compared with the traditional underwater production system, there are four key technologies in the "submarine factory" that need breakthroughs, namely, the subsea pressurization system, the subsea gas compression system, the subsea separation syste...

AI Technical Summary

Problems solved by technology

In addition, very few scientific research institutes in China have only started to pay attention to the high-efficiency oil-water separation technology in recent years, and the research on deep-water separation technology is still in the research and development and experimental research stage

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