Diagenetic facies logging identification method and device for tight sandstone reservoirs
A technology for tight sandstone reservoirs and tight sandstones, which is applied in geophysical measurements, instruments, etc., can solve the problems of high recognition rate and difficult to guarantee, and achieve the effect of improving the recognition rate
Active Publication Date: 2021-08-03
PETROCHINA CO LTD
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Compared with the artificial observation method, these methods are more efficient in diagenetic facies classification, and can continuously predict the type of diagenetic facies in tight sandstone reservoirs in the logging depth dimension, but this method is usually difficult to guarantee a high recognition rate
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
[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the 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.
[0026] As mentioned above, the method of diagenetic facies classification using logging parameters to establish a crossplot and using a probabilistic neural network to establish a quantitative judgment model is more efficient in diagenetic facies classification than the manual observation method, and can achieve continuous Predict the types of diagenetic facies in tight sandstone reservoirs, but this method is usually difficult to guarantee a high recognition rate. In order to achieve a higher recognition rate on the basis of continuously predicting the type of diagen...
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 discloses a logging identification method and device for diagenetic facies of tight sandstone reservoirs, wherein the method includes: obtaining tight sandstone sample data in a research area, and the sample data includes: logging parameters of the sample and diagenetic facies of the sample type; using the logging parameters of the samples in the tight sandstone sample data in the research area as the input layer, and the diagenetic facies type of the samples in the tight sandstone sample data in the research area as the output layer, a radial basis function neural network model is established; using the The radial basis function neural network model is used to identify the diagenetic facies types of tight sandstone samples. The invention establishes a radial basis function neural network model, which can simultaneously identify the diagenetic facies of tight sandstone reservoirs in combination with multiple logging parameter information, effectively improves the recognition rate, and is beneficial to accurately identify the diagenetic facies types of tight sandstone reservoirs.
Description
technical field [0001] The invention relates to the technical field of oil and gas exploration and development, in particular to a logging identification method and device for diagenetic facies in tight sandstone reservoirs. Background technique [0002] Tight sandstone is one of the important fields in the study of unconventional oil and gas reservoirs, and diagenetic facies largely determine the formation of dominant reservoirs and the development of "sweet spots", as well as the storage performance of reservoirs and the enrichment of oil and gas. Therefore, The study and identification of diagenetic facies plays a vital role in the study of tight sandstone oil and gas reservoirs. [0003] Existing identification methods of diagenetic facies in tight sandstone reservoirs mainly judge the diagenetic facies type by artificially observing thin slices of core samples. The diagenetic facies type obtained by this method has a high accuracy rate, but collecting core samples at di...
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): G01V11/00
CPCG01V11/00
Inventor 毛治国谢然红朱如凯吴松涛张响响高伦王金怡申玉龙
Owner PETROCHINA CO LTD