A method for determining the content of adsorbed gas in shale gas reservoirs
A technology for adsorbing gas and shale gas, applied in measuring devices, soil material testing, instruments, etc., can solve the problems of unclear physical meaning, failure to fully consider the adsorption capacity of clay minerals, and low reliability, and achieve strong operability performance and reliability, and the effect of improving the accuracy of logging evaluation
Active Publication Date: 2021-06-11
CHINA PETROLEUM & CHEM CORP +1
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] Aiming at the problems that the current evaluation method of shale adsorbed gas content is not clear in physical meaning, does not fully consider the adsorption capacity of clay minerals, and has low reliability, the present invention establishes a new evaluation method of adsorbed gas content in shale gas reservoirs
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0053] The present invention will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
[0054] The following reference figure 1 A method for determining the adsorbed gas content of a shale gas reservoir according to an exemplary embodiment of the present invention is described in detail.
[0055] Such as figure 1 Said, the method mainly includes the following steps:
[0056] Step 1: Based on well logging data and shale core experiment data, determine T 0 Organic matter content and maturity of shale gas reservoirs at temperature, and T 0 The relative content of clay m...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A method of determining the content of a shale gas reservoir is disclosed. The method comprises the following steps: 1) determining T 0 Organic matter content and maturity of shale gas reservoirs at temperature, and T 0 The relative content of clay mineral components in shale gas reservoirs at different temperatures, the total content of clay minerals, and the saturation of bound water in clay pores; 2) determine the isothermal adsorption constant of organic matter; 3) determine the isothermal adsorption constant of wet clay; 4) determine the adsorption 5) Determine the total adsorbed gas content of shale gas reservoirs based on the organic matter adsorbed gas content and wet clay adsorbed gas content. The present invention provides an effective means for determining the adsorbed gas content of shale gas reservoirs by using well logging data. The accuracy of logging evaluation of adsorbed gas content in shale reservoirs has great practical value in shale gas exploration and development.
Description
technical field [0001] The invention relates to the field of unconventional oil and gas exploration and development, and more specifically, relates to a method for determining the content of adsorbed gas in shale gas reservoirs. Background technique [0002] Occurrence of natural gas in an adsorbed state is the fundamental feature that distinguishes shale gas reservoirs from conventional oil and gas reservoirs. Accurate evaluation of shale adsorbed gas content based on well logging data is an important basis for refinement of shale gas exploration and development, and is also a core issue in the evaluation of unconventional oil and gas reservoirs. Accurate evaluation of shale adsorbed gas content is of great significance to accurately understand the resource potential of this type of reservoir. [0003] At present, the quantitative evaluation of shale adsorbed gas content is mainly based on the isothermal adsorption method of coalbed methane. First, the isothermal adsorptio...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24
CPCG01N33/241
Inventor 路菁李军武清钊金武军于文芹张爱芹胡瑶
Owner CHINA PETROLEUM & CHEM CORP