Method and device for three-dimensional characterization and determination of quantitative pores of different scales in shale reservoirs
A shale reservoir and pore technology, applied in the field of geological exploration, can solve problems such as no solutions, and achieve the effect of accurately and quantitatively characterizing pore characteristics of different scales
Active Publication Date: 2020-01-07
PETROCHINA CO LTD
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003]
For the above problems, no effective solution has been proposed
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
[0042] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.
[0043] In this example, a method for quantitative characterization of multi-scale pores in shale is provided. Combined with the geological background of selected shale samples by CT technology, X-ray three-dimensional micro-CT technology is used to reconstruct three-dimensional shale samples. Before the three-dimensional reconstruction, the position of the sample to be scanned is optimized, that is, a typical area can be selected for a series of slice scans, and then three-dimensional modeling can be performed. Further, through electron probe, scanning electron microscope, X-ray diffraction and...
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
The invention provides a quantitative three-dimensional characterization determination method and device of different-sized pores in a shale reservoir. The quantitative three-dimensional characterization determination method comprises the following steps: acquiring a shale core sample; performing slice scanning on the core sample at preset intervals to obtain a multi-layer slice; working out surface porosity change rules of the multi-layer slice in three directions including an X direction, a Y direction and a Z direction; according to the surface porosity change rules, determining a slice position that meets geological conditions, and acquiring a rock sample at the determined slice position as a CT modeling rock sample; performing three-dimensional model reconstruction on different-sized pores in the CT modeling rock sample to obtain a three-dimensional model of the different-sized pores; extracting one or more characteristic parameters of the pores in the shale reservoir from the three-dimensional model. According to the quantitative three-dimensional characterization determination method and the quantitative three-dimensional characterization determination device, the technical problem that in the prior art, the pore characteristics of the shale reservoir cannot be quantitatively characterized is solved, and the technical effect of accurately and quantitatively characterizing the pore characteristics of the shale reservoir is achieved.
Description
technical field [0001] The invention relates to the technical field of geological exploration, in particular to a three-dimensional characterization method and device for quantifying pores of different scales in shale reservoirs. Background technique [0002] In recent years, with the continuous deepening of unconventional oil and gas exploration, especially the rapid development of continuous oil and gas reservoirs such as shale oil and gas, tight sandstone oil and gas, and coalbed methane, it has been found that tight shale may also store rich oil and gas resources . The microscopic pores of shale are an important space for oil and gas storage, and also a key reference factor for the selection of shale oil and gas exploration sweet spots and the evaluation of resource potential. With the continuous deepening of research on microscopic pore structure, it is found that shale reservoirs are not only controlled by inorganic mineral components, but also by the characteristics ...
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): G01N15/08
CPCG01N15/088
Inventor 黄军平李相博向倪娇李智勇
Owner PETROCHINA CO LTD