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Oil-gas-water-solid multiphase separation technology and multiphase separation device

A technology of multi-phase separation, oil, gas and water, which is only applied in the direction of multi-stage series refining process treatment, petroleum industry, water/sewage multi-stage treatment, etc., and can solve the problems of increased difficulty, incompatibility of operating parameters, and separation of three-phase separators To achieve the effect of reducing manufacturing and management operating costs, realizing modularization, and reducing equipment safety management risks

Active Publication Date: 2017-08-25
西安长庆油气建设实业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As most of my country's oilfields gradually enter the mid-to-late stage of exploitation, the water content of crude oil continues to increase. On the one hand, the amount of produced fluid and sewage treatment increases sharply. Some process equipment in the gathering and transportation system cannot meet the production requirements. The water content and total liquid volume of heated crude oil increase, resulting in a substantial increase in energy consumption for production; In particular, the difficulty of sewage treatment has increased sharply, which puts forward higher requirements for oil, gas and water solids treatment equipment
In addition, with the development and production of oilfields, the original separators in each station cannot meet the actual changes due to their design conditions and operating parameters, and it is difficult to meet the oil and water separation requirements
Judging from the current use of three-phase separators in various domestic oilfields, due to the obvious lack of theory and experience in designing three-phase separators, coupled with differences in national conditions and factory manufacturing, the actual operating parameters of the three-phase separators often differ from those provided by the site. Incompatibility, coupled with the influence of the deposition of solid particles in the liquid in the stable section, leads to poor separation effect of the three-phase separator, and many three-phase separators are useless

Method used

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  • Oil-gas-water-solid multiphase separation technology and multiphase separation device

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Experimental program
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Effect test

Embodiment 1

[0027] In order to overcome the deficiencies of the prior art, this embodiment provides a figure 1 The multiphase separation process of oil, gas, water and solids shown at least includes the following steps:

[0028] Step 1) Primary separation: The incoming liquid enters the primary separation pipe 2 from the liquid inlet pipe 1. After rapid dynamic separation, the associated gas enters the gas-liquid separator 3 for gas-liquid separation, and the separated gas passes through the gas outlet pipe 4. The liquid separated by the primary separation pipe 2 enters the secondary separation pipe 6;

[0029] Step 2) Secondary separation: the liquid separated by the primary separation pipe 2 enters the secondary separation pipe 6 through the connecting pipe 15, and the secondary separation pipe 6 is separated again, and the separated oil is transported out through the oil outlet pipe 7 and separated The water enters the liquid-solid separator 9 through the connecting pipe two 8;

[00...

Embodiment 2

[0038] On the basis of embodiment 1, this embodiment provides a kind of figure 1The shown oil-gas-water-solid multiphase separation device includes a primary separation pipe 2, a secondary separation pipe 6, a liquid-solid separator 9, a three-stage separation pipe 14, a cyclone 20, a settling pipe 23 and an air floatation pipe connected in sequence. Box 4, the inlet of the primary separation pipe 2 is connected with a liquid inlet pipe 1, the upper outlet of the primary separation pipe 2 is connected with a gas-liquid separator 3, and the lower outlet of the primary separation pipe 2 passes through the connecting pipe one 5 and the two The inlet of the first-stage separation pipe 6 is connected, the upper outlet of the second-stage separation pipe 6 is connected to the oil outlet pipe 7, and the lower outlet of the second-stage separation pipe 6 is connected with the inlet of the liquid-solid separator 9 through the connecting pipe two 8, and the liquid-solid The upper outlet...

Embodiment 3

[0041] On the basis of embodiment 2, this embodiment provides a kind of figure 1 In the shown oil-gas-water-solid multi-phase separation device, in order to ensure the separation effect and safety, the first-stage separation pipe 2, the second-stage separation pipe 6 and the third-stage separation pipe 14 have the same structure, and all include sequentially arranged from top to bottom. There are three layers of horizontal pipes, and each two layers of horizontal pipes are connected through a plurality of vertical pipes. The first-stage separation pipe 2 is equipped with a gas-liquid interface instrument, a temperature detector and a safety valve, and the second-stage separation pipe 6 and the third-stage separation pipe 14 There are oil-water interface instruments inside, the inlets of the first-stage separation pipe 2, the second-stage separation pipe 6 and the third-stage separation pipe 14 are all arranged in the middle of one end of the three-layer horizontal pipe, and the...

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Abstract

The invention provides an oil-gas-water-solid multiphase separation technology and multiphase separation device. Oil-gas-water-solid separation is achieved by means of three-stage separation, hydrocyclone separation, settling separation, air floatation treatment and the like of separation tubes. The device comprises a first-stage separation tube, a second-stage separation tube, a solid-liquid separator, a third-stage separation tube, a hydrocyclone, a settling tube and an air floatation tank which are in connection in sequence. According to the technology and device, rapid oil-gas-water-solid separation is achieved by means of the tube characteristics, the density differences among every phase medium and dynamic separation, a traditional method that multiphase separation can only be achieved with the help of containers is broken through, and a blast failure mode of the pressure containers is converted to a leakage failure mode of the pressure tubes, so that equipment security management risks are greatly lowered.

Description

technical field [0001] The invention relates to separation equipment in the field of oil, gas and sewage treatment, in particular to a multiphase separation process and a multiphase separation device for oil, gas and water solids. Background technique [0002] As most of my country's oilfields gradually enter the mid-to-late stage of exploitation, the water content of crude oil continues to increase. On the one hand, the amount of produced fluid and sewage treatment increases sharply. Some process equipment in the gathering and transportation system cannot meet the production requirements. The water content and total liquid volume of heated crude oil increase, resulting in a substantial increase in energy consumption for production; In particular, the difficulty of sewage treatment has increased sharply, which puts forward higher requirements for oil, gas and water solids treatment equipment. In addition, with the development and production of oilfields, the original separato...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/02C02F9/02C02F103/10
CPCC02F1/24C02F1/38C02F9/00C02F2001/007C02F2103/10C10G53/02C10G2300/1033
Inventor 郑生宏何茂林杨仁强刘丰宁闫怀荣蒋真友钟兴福张军史仕荧张昊任泉龙贺建国许丽樊勇毛勇蒋勇
Owner 西安长庆油气建设实业有限责任公司