Layered and balanced medium entering system and method of parallel multiphase separation equipment

A multi-phase separation and three-phase separation technology, which is applied in the field of oil and water separation of gas and oil field surface engineering production fluid, can solve the problems of bias flow and low processing capacity of each equipment, and achieve flow balance and oil-water separation interface stability , Improve the effect of the overall separation ability

Active Publication Date: 2014-04-16
PETROCHINA CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem of partial flow and low processing capacity of each equipment caused by the sequential liquid feeding method in the anti-gravity direction of the current multi-phase separation equipment running in parallel, the present invention provides a medium layering method for parallel multi-phase separation equipment Balanced entry system and method

Method used

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  • Layered and balanced medium entering system and method of parallel multiphase separation equipment
  • Layered and balanced medium entering system and method of parallel multiphase separation equipment
  • Layered and balanced medium entering system and method of parallel multiphase separation equipment

Examples

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Embodiment -1

[0075] Example-1: Through technological transformation, a set of 2 sets of Ф4×24m three-phase separator groups operating in parallel is established to enter the system layered and balanced, and the inlet medium is the liquid phase water content from the oil well group with a water content of 95.3% The oil-gas-water mixture of extra-high water content and high condensation crude oil. After the system was put into use, the oil-water interface of the two equipment tended to be stable and consistent, and the overall oil-water separation treatment capacity increased by 20% compared with the conventional sequential entry process before the transformation.

Embodiment -2

[0076] Example-2: In the production capacity construction project of overseas oilfields, a new set of 4 sets of Ф3.4×20m three-phase separators operating in parallel are layered and balanced into the system, and the inlet medium is the liquid phase water from the oil well group Low-point crude oil-gas-water mixture with a rate of 50%. After the system was put into use, the oil-water interface of the four equipment tended to be stable and consistent, and the overall oil-water separation treatment capacity increased by 15% compared with the conventional sequential entry process.

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Abstract

The invention discloses layered and balanced medium entering system and method of parallel multiphase separation equipment, which is applied to treatment of oilfield produced liquid. The system is characterized in that an arrival manifold (1) is branched into four parallel branch pipelines through a primary manifold (2) and two secondary manifolds (5) and connected to four parallel multi-phase separation equipment; the four parallel branch pipelines are equal in length and thickness at the same level of section; the arrival manifold (1), the primary manifold (2) and the secondary manifolds (5) are connected in a manner of equal pipe bottom elevations; the arrival manifold (1) leads produced liquid into the four parallel triple-phase separation equipment through the four parallel branch pipelines so as to built an equivalent and layered flow pattern of oil, gas and water. A sampling test result shows that a gas and liquid layered flow pattern is formed inside each manifold and each branch pipeline of the system; the flow of oil, gas and water entering each equipment is balanced, the oil-water separation interface is stable, and the overall oil-water separation ability of the equipment is improved by 15%-20% in comparison with a liquid feeding process in a conventional sequence.

Description

Technical field: [0001] The invention relates to oil, gas and water separation technology for oil field surface engineering production fluid, in particular to a medium layered balanced entry system of parallel multiphase separation equipment and a layered balanced entry method realized by the system. Background technique: [0002] At present, the oil-gas-water three-phase separation equipment used for oil well product treatment in oilfields at home and abroad adopts the method of mixing multiphase media, and the gas-liquid separation and oil-water separation processes are mainly carried out in the three-phase separator. When this kind of equipment is set up in parallel and runs at the same time, the medium generally enters in the direction of gravity against the direction (see Figure 6-Figure 7 ). This medium access method has the following problems: [0003] (1) The medium inflow and composition of each equipment are not equal [0004] When a plurality of separation equi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/34
Inventor 宋承毅张延松
Owner PETROCHINA CO LTD
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