Productivity calculation method for shale gas reservoir vertical well after fracturing transformation
A technology for shale gas reservoirs and shale gas wells, which is applied in calculation, instrumentation, data processing applications, etc., and can solve problems such as the lack of productivity of vertical wells in shale gas reservoirs
Inactive Publication Date: 2020-02-21
CHINA HUADIAN SCI & TECH INST +1
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The main purpose of the embodiments of the present invention is to provide a method for calculating the productivity of vertical wells in shale gas reservoirs after fracturing, so as to solve the current problem of lack of accurate judgment of the productivity of vertical wells in shale gas reservoirs after fracturing
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 1
[0025] This example provides a method for calculating productivity after volumetric fracturing of vertical wells in shale gas reservoirs, such as figure 1 As shown, the method includes:
[0026] Step S11, establishing a method for determining the stable seepage time of vertical wells in shale gas reservoirs after volume fracturing;
[0027] Step S12, according to the method, using the inflow dynamic curve to realize the analysis of the influence law of the factors affecting the production capacity;
[0028] Step S13, using the normalization process of the productivity curve to establish the productivity function of the shale gas well;
[0029] Step S14, based on the shale gas productivity function, obtain the productivity of the fractured vertical well in the shale gas reservoir.
[0030] In this example, starting from the law of unstable pressure propagation in ultra-low porosity and ultra-low permeability reservoirs in shale gas reservoirs, a method for determining the sta...
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 productivity calculation method for a shale gas reservoir vertical well after fracturing transformation. The method comprises: according to the law of unstable pressure propagation of the ultralow-porosity and ultralow-permeability reservoir of the shale gas reservoir, establishing a shale gas well stable seepage time determination method, using an inflow dynamic curve, determining the influence rule of shale gas well productivity influence factors, establishing a shale gas reservoir productivity function by conducting normalization processing on a shale gas reservoirproductivity curve, and achieving productivity evaluation after shale gas reservoir vertical well fracturing transformation. Compared with the prior art, the method is suitable for predicting the yield of the shale gas reservoir after vertical well fracturing transformation, and has important practical significance for guiding dynamic analysis of shale gas reservoir production.
Description
technical field [0001] The invention relates to the field of shale gas reservoir development and production dynamic analysis, in particular to a method for calculating gas well productivity after fracturing of vertical wells in shale gas reservoirs. Background technique [0002] In recent years, due to the development of the national economy, the demand for energy has continued to rise, and the price of natural gas has continued to rise. Shale gas reservoirs are unconventional natural gas. With the deepening understanding of shale gas geology and reservoirs, and the continuous improvement of development technology, shale gas exploration and development are in full swing worldwide. Since shale gas reservoirs are different from conventional natural gas reservoirs and have special geological and development characteristics, timely and accurate judgment of shale gas reservoir productivity is of great significance for the preparation of shale gas reservoir development plans. The...
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 Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/02
CPCG06Q10/04G06Q10/0639G06Q50/02
Inventor 姜宝益雷怀玉王家亮王茜孙婷婷赵岩邢金艳任玉秀邢占涛符文康
Owner CHINA HUADIAN SCI & TECH INST