Shale gas reservoir numerical simulation method
A numerical simulation and shale gas reservoir technology, applied in CAD numerical modeling, data processing applications, electrical digital data processing, etc., can solve problems such as low recovery rate, achieve enhanced recovery rate, strong promotion and application prospects, Targeted and accurate effect
Pending Publication Date: 2022-07-15
CHINA PETROLEUM & CHEM CORP +1
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[0004] This application provides a numerical simulation method for shale gas reservoirs, aiming to improve the low recovery rate of single wells in shale gas refracturing in the prior art
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[0031] Please refer to figure 1 The embodiments of the present application provide a method for numerical simulation of shale gas reservoirs, and a method for numerical simulation of shale gas reservoirs includes the following steps:
[0032] S1. Obtain reservoir parameters of shale gas wells in the study block, the reservoir parameters include formation burial depth, formation temperature, formation pressure coefficient, gas-bearing property, matrix porosity, matrix permeability, natural fracture porosity, natural fracture Permeability, formation shape factor, rock density, PVT data, shale gas Langmuir adsorption volume and adsorption pressure;
[0033] S2. Obtain the engineering parameters of the shale gas well in the study block. The engineering parameters include the length of the horizontal section, the number of fracturing sections, the spacing between the fracturing sections, the position of the fracturing perforation, the total amount of fracturing fluid, the total san...
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The invention provides a shale gas reservoir numerical simulation method. The shale gas reservoir numerical simulation method comprises the following steps that S1, reservoir parameters of a shale gas well of a research block are obtained; s2, obtaining engineering parameters of the shale gas well; s3, obtaining production data of the shale gas well; s4, establishing a geological model of the shale gas well reflecting the actual stratum condition; s5, according to a dynamic analysis method, simulating the average half-fracture length of the single-section fracturing fracture of the shale gas well by using the production data of the shale gas well; the method comprises the following steps: calculating a non-uniform half-seam length corresponding to each fracturing section by establishing fracturing engineering parameters, and establishing a multi-section non-uniform half-seam length fracturing crack model of the shale gas well through the non-uniform half-seam length; s6, a corresponding production system is formulated by importing production data of the shale gas well, and a geomodulus-modulus integrated coupling model is formed; and carrying out production simulation according to a production system through a geomodulus-modulus integrated coupling model to obtain formation pressure and gas-bearing distribution conditions of the research block. According to the method, the recovery efficiency of the shale gas well is effectively improved.
Description
technical field [0001] The present application relates to the field of unconventional oil and gas, and in particular, to a numerical simulation method for shale gas reservoirs. Background technique [0002] The basic principle of numerical simulation of oil and gas reservoirs is to establish a mathematical model that can describe the characteristics of the underground reservoir, the physical process of underground seepage, and the initial and boundary conditions of the oil and gas reservoir, and solve the mathematical model through numerical methods to replicate the actual process of fluid flow and production in the reservoir. And deal with the actual oil and gas reservoir development engineering problems according to the computational reservoir analysis. With the continuous improvement of China's economic green development requirements, the demand for oil and natural gas has grown rapidly. Shale gas exploration and development is of great significance to ensure China's ener...
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IPC IPC(8): G06F30/20G06F30/23G06F30/28G06Q50/02G06F111/10G06F113/08G06F119/14
CPCG06F30/20G06F30/23G06F30/28G06Q50/02G06F2111/10G06F2119/14G06F2113/08
Inventor 姜宇玲郑爱维刘莉卢文涛陈晓宇张谦
Owner CHINA PETROLEUM & CHEM CORP