Abstract
How to realize the efficient development of tight oil reservoir is a key and difficult problem for the unconventional resources of China. To realize the effective development of tight oil reservoir, it is necessary to the reservoir stimulation technology to improve the seepage capacity of low permeability reservoirs and increase the productivity of wells. Reservoir geomechanics is one of the main factors affecting hydraulic fracturing effect. Domestic and foreign experts have conducted a large number of studies on the characteristics of reservoir geomechanics. However, most of them studied the regional geomechanical characteristics based on logging data, lithology characteristics and three-dimensional seismic. Such static geomechanics studies can better reflect the in-situ stress characteristics of reservoirs before hydraulic fracutring but also have limitations and uncertainties in the understanding of regional geomechanical characteristics. Based on the one-dimensional geomechanical study, this paper uses structural characteristics and seismic attributes to study the three-dimensional mechanics spatial distribution characteristics of reservoirs. On this basis, this paper performs dynamic (4D) stress field simulation combined with real-time fracturing treatment and microseismic monitoring data. The research results can be used to guide the design of horizontal wells fracturing design and provide strong technical support for the production capacity construction. This paper studies the static and dynamic geomechanics of Baikou Quan Formation in Da 13 block, Junggar Basin and describes the research methods and processes and applies them to the design and optimization of reservoir stimulation schemes. The research results can help reduce operational costs and improve the efficiency of measures and serves as technical support for the efficient development of tight reservoirs in China.
