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Air simulating and sampling device for air displacement oil output and simulating and sampling method

A technology for simulating sampling and air, applied in the fields of fluid extraction, earthwork drilling, measurement, etc., can solve problems such as difficulty in meeting actual production needs and large on-site workload, meet safety production requirements, improve sampling accuracy, and be simple and easy to operate. row effect

Inactive Publication Date: 2015-02-25
CHINA PETROLEUM & CHEM CORP +1
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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 simulated sampling device for air flooding produced gas in view of the above-mentioned prior art that has a large field workload and is difficult to meet the actual production needs.

Method used

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  • Air simulating and sampling device for air displacement oil output and simulating and sampling method

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Embodiment Construction

[0015] The present invention will be further described with reference to the accompanying drawings:

[0016] Depend on figure 1 It can be seen that the present invention provides an air-flooding oil-produced gas simulation sampling device, including an oxidation reaction kettle 2, a separator 3, a gas meter 4, an air metering pump 5, an air metering pump 5, an oxidation reaction kettle 2, and a separator 3 . The gas meter 4 is connected in series through pipelines and valves, and a sampling valve 12 is installed on the outlet of the gas meter 4 .

[0017] The separator 3 is composed of a temperature-controlled water bath 3a and a built-in triangular flask 3b. A venting pipeline is also inserted into the rubber stopper of the triangular flask 3b, and a venting valve 7 is installed on the venting pipeline.

[0018] The outlet of the gas meter 4 is connected with a helium cylinder 1 through a pipeline and a valve 6, and opening the helium cylinder 1 can purge the gas meter 4, th...

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Abstract

The invention relates to an air simulating and sampling device for the air displacement oil output and a simulating and sampling method, and belongs to the technical field of oil field development experiments. The air simulating and sampling device for the air displacement oil output comprises an oxidation reaction kettle, a separator, a gas meter and an air metering pump. The air metering pump, the oxidation reaction kettle, the separator and the gas meter are sequentially connected in series through pipelines and valves. A sampling valve is installed on an outlet of the gas meter. By means of the air simulating and sampling device for the air displacement oil output, the formation temperature and pressure of a site displacement well can be simulated in a laboratory, an air displacement oxidation reaction model similar to the site displacement well is set up, and sampling in the laboratory is achieved. Operation is simple and easy to implement, the production condition of the site displacement well can be monitored in real time without site sampling, and the safe production requirement is met.

Description

technical field [0001] The invention relates to a simulated sampling device and a simulated sampling method for air-driven oil-produced gas, belonging to the technical field of oilfield development experiments. Background technique [0002] Air flooding technology is one of the important technologies for enhancing oil recovery in the later stage of oilfield development. During air flooding, the crude oil components in the formation undergo oxidation reaction with oxygen in the air, and part of the unconsumed oxygen will be produced together with the produced gas in crude oil production. Experiments show that explosion is easy to occur when the methane content and oxygen content in the produced gas reach a certain limit range. For example, when the initial temperature is 90 °C and the initial pressure is below 1.2 MPa, the explosion range of methane in the methane and air explosion mixture is 4.76%-16.95% , the critical oxygen content is 12.35%. Therefore, the monitoring of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/06E21B47/07E21B49/08
CPCE21B49/08E21B43/168
Inventor 许寻李中超单献国王进安王瑞华周志龙史新兰王子庆
Owner CHINA PETROLEUM & CHEM CORP
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