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A simulation method for an anaerobic simple core flooding simulation system

A simulation method and simulation system technology, which are applied in the fields of earth-moving drilling, production of fluids, wellbore/well components, etc., can solve the problems of expensive construction, cluttered and too simple, etc., and achieve convenient sampling and easy control of test conditions. Effect

Inactive Publication Date: 2015-08-26
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

However, the types of core flooding simulation devices currently used are messy, some are too simple to meet the requirements of the anaerobic environment in the formation, some are complex in structure, and the construction cost is extremely expensive, and among the many simulation devices, there are few cycle simulations that meet the actual production device

Method used

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  • A simulation method for an anaerobic simple core flooding simulation system
  • A simulation method for an anaerobic simple core flooding simulation system
  • A simulation method for an anaerobic simple core flooding simulation system

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Embodiment Construction

[0026] The implementation steps are as follows:

[0027] 1) Take out the core simulation column 2 separately, sterilize it, fill it with other sterile fillers such as core or quartz sand, fill it with saturated saline to remove air, then inject the crude oil to be driven into one end, and discharge the saline solution from the other end to the entire column Filled with crude oil, that is, close the valves at both ends of the column to seal the entire column.

[0028] 2) According to the direction of water flow, according to figure 1 As shown, connect the treated closed core simulation column 2 with the sterilized three-phase separation sampler 3, silica gel pipeline 4, and anaerobic vacuum valve system 5a, 5b, and place a section of silica gel pipeline under the turntable of the peristaltic pump Open the liquid inlet pipe mouth 11 and the liquid outlet pipe mouth 12 valves of the three-phase separation sampler, close the emptying valve 13 and the non-return ventilation pipe m...

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Abstract

The invention relates to an anaerobic simple core flooding simulation system which is a set of simple experiment device integrating anaerobism, circulation and triphase separation, used for indoor simulation experiments of improving crude oil recovery efficiency by microorganism, meeting actual conditions of circulatory production in the oil recovery technology, and capable of truly simulating cores of strata and strict anaerobic conditions and realizing real-time simple operations and triphase separation collection of oil, water and gases. The stimulation system mainly comprises a peristaltic pump, a core simulating column, a triphase separation sampler, an anaerobic vacuum valve system and a silica gel pipeline to form a set of closed simulation system, the core stimulating column mainly stimulates oil layer core states, the peristaltic pump provides flooding power, the triphase separation sampler integrates functions of flooding liquid injection, gas-water-oil triphase separation collection and oil size measuring, the anaerobic vacuum valve system is externally connected with a vacuum pump and nitrogen (or helium) to be used for forming an anaerobic environment of the whole system, and the silica gel pipeline is connected with all parts to form a closed circulation loop.

Description

technical field [0001] The invention relates to an anaerobic simple rock core flooding simulation system and method, which are used for the research of microbe-enhanced crude oil recovery test under anaerobic conditions. Background technique [0002] Microbial enhanced oil recovery is a green and economical tertiary recovery technology with great development prospects, and is currently in the stage of applied research. Generally speaking, the field test is carried out directly in the oil field or by using existing oil wells, which costs a lot and is not conducive to the normal exploitation of existing oil wells. Therefore, the indoor core flooding simulation test is used by many researchers as an important procedure to judge the feasibility of microbial enhanced oil recovery technology. However, the types of core flooding simulation devices currently used are messy, some are too simple to meet the requirements of the anaerobic environment in the formation, some are complex ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/22E21B49/00
Inventor 姚俊蔡珉敏王飞陈辉伦刘海军刘文娟郭幻
Owner UNIV OF SCI & TECH BEIJING
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