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A system and method for gathering and transporting oil, gas and water in offshore oilfields

A technology for gathering and transportation systems and offshore oil fields, applied in separation methods, chemical instruments and methods, earthwork drilling and production, etc., can solve the problems of large volume and weight, low efficiency, etc., and achieve the effects of simplifying the process, improving separation efficiency, and compact structure

Active Publication Date: 2018-06-08
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a system and method for oil, gas and water gathering and transportation in offshore oil fields, so as to overcome the shortcomings of the existing oil and gas gathering and transportation systems, such as low efficiency, large volume and weight, etc.

Method used

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  • A system and method for gathering and transporting oil, gas and water in offshore oilfields
  • A system and method for gathering and transporting oil, gas and water in offshore oilfields
  • A system and method for gathering and transporting oil, gas and water in offshore oilfields

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specific Embodiment approach

[0027] The preferred embodiment of the offshore oilfield oil-gas-water gathering and transportation system of the present invention is:

[0028] Including collection and measurement device, multi-phase transfer pump, free water separation device, emulsified water separation device, associated gas treatment device, sewage treatment device and crude oil stabilization tank;

[0029] The collection and measurement device includes a production manifold and a test manifold connected in parallel, and the test manifold is sequentially connected to a metering separator and a flowmeter through a pipeline, and the flowmeter includes a gas flowmeter, a liquid flowmeter, and an analyzer;

[0030] The free water separation device is connected to a phase separator, a booster pump, and an inline dehydrator in sequence through pipelines. The upstream of the phase separator is connected to the collection and measurement device through a multi-phase delivery pump, and the downstream gas phase out...

specific Embodiment

[0045] Such as figure 1 As shown, the offshore oilfield oil, gas and water gathering and transportation system of the present invention includes a collection and measurement device 1, a multiphase delivery pump 6, a free water separation device 2, an emulsified water separation device 3, an associated gas treatment device 5, a sewage treatment device 4 and crude oil Stabilization tank 7; wherein,

[0046] The upstream of the free water separation device 2 is connected to the collection and measurement device 1 through the multiphase delivery pump 6, and the downstream is connected with three branch pipelines, which are respectively connected to the emulsified water separation device 3, the associated gas treatment device 5, and the sewage treatment device 4 according to the medium in the pipe , the downstream of the emulsified water separation device 3 is connected with the crude oil stabilization tank;

[0047] The collection and measurement device 1 above includes a product...

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Abstract

The invention discloses an offshore oilfield oil-gas-water gathering and transporting system and method. The oil-gas-water gathering and transporting system comprises a gathering and measuring device, a multi-phase conveying pump, a free water separating device, an emulsified water separating device, an associated gas treatment device, a sewage treatment device, a crude oil stabilization tank and the like. The oil-gas-water gathering and transporting method comprises the steps of well liquid gathering and measuring, oil-gas-water three-phase separation, crude oil dehydration and stabilization, associated gas treatment, sewage treatment and the like. By the adoption of a rotational flow field for gravitational separation, separation efficiency is improved, the quantity of separation equipment is reduced, the process is simplified, and construction investment in an offshore platform can be effectively reduced.

Description

technical field [0001] The invention relates to an oil-gas gathering and transportation technology, in particular to an oil-gas-water gathering and transportation system and method in an offshore oil field. Background technique [0002] The oil well produced fluid in offshore oilfields contains a large amount of formation associated water and associated gas. In order to obtain qualified oil and gas products, multiphase separation must be implemented. For most offshore oil fields, the oil-water separation process is completed on the oil production platform or floating production system, so the size and weight of the oil-water separation device used directly affects the production cost of offshore oil and gas. In recent years, with the continuous development of offshore oilfields, the comprehensive water content of oilfields has become higher and higher, and the water content of oil well output fluids has reached 80% to 90%. The settlement dehydration treatment facilities base...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/34B01D17/038B01D19/00C02F1/24C02F103/10
CPCB01D17/0217B01D19/0052C02F1/24C02F2103/10C02F2201/002E21B43/34
Inventor 刘美丽陈家庆韩严和
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY