Experimental device for coal seam gas multi-layer co-production

An experimental device and multi-layer commingled production technology, which is applied in the direction of production fluid, earthwork drilling, measurement, etc., can solve the problems that the wellbore simulation cannot be realized

Pending Publication Date: 2020-09-25
CHINA UNITED COALBED METHANE NAT ENGRES CENT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current simulation of coalbed methane mining has the following shortcomings: the experimental instruments are mostly used for the simulation of single coalbed coalbed methane mining, and cannot realize wellbore simulation for multi-coal seam co-production

Method used

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  • Experimental device for coal seam gas multi-layer co-production
  • Experimental device for coal seam gas multi-layer co-production

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Experimental program
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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, use a specific orientation construction and operation, therefore should not be construed as limiting the application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be co...

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Abstract

The invention discloses an experimental device for coal seam gas multi-layer co-production. The experimental device comprises a reservoir simulation system, a wellbore simulation system and a controland data collection system, wherein the reservoir simulation system comprises a plurality of coal seam simulation components connected in parallel and is used for simulating the reservoir condition ofmultiple coal seams; the wellbore simulation system comprises a cylinder for simulating the drainage and gas production process of a wellbore; the coal seam simulation components are respectively connected to different height positions of the cylinder, so that the wellbore simulation system simulates the output characteristics and pressure differences among coal seams in the wellbore of a coal seam gas well; and the control and data collection system is respectively connected with the reservoir simulation system and the wellbore simulation system and is used for sending control instructions and collecting simulated data. The experimental device can simulate the flow condition of multi-phase flow in the wellbore during multiple coal seam co-production. Reservoir simulation is associated with wellbore simulation, so that the experimental device can accurately simulate the real situation of a reservoir and can simulate and study the condition in the wellbore during production.

Description

technical field [0001] The invention relates to the technical field of coal-bed methane exploitation, in particular to an experimental device for multi-layer co-production of coal-bed methane. Background technique [0002] Among the coalbed methane resources in my country, the coalbed methane resources with the characteristics of "coalbed group" are huge. For multi-layer superimposed coalbed methane systems, multi-layer co-production can not only reduce the investment of single wells, increase the service life of coalbed methane wells, but also improve the quality of coalbed methane. gas recovery rate. In the process of multi-layer co-production of coalbed methane, the flow pressure of each layer is mainly controlled by changing the height of the dynamic liquid surface and the casing pressure to carry out production. Any impact will have an impact on the production of the coal seam. [0003] At present, there are some simulation experimental devices for the flow characteris...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00E21B47/00E21B47/06E21B43/14G09B25/00
CPCE21B43/006E21B43/14E21B47/00E21B47/06E21B49/00G09B25/00
Inventor 黄红星彭宏钊周劲辉赵增平陈东李键青
Owner CHINA UNITED COALBED METHANE NAT ENGRES CENT
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