CAJ | 학술논문

水力压裂后的页岩气藏水平井渗流区域内储层呈现复杂的裂缝网络形态，考虑解吸-吸附机理的单井渗流数值模型的建立对单井产能影响因素分析具有较强的理论价值和现实意义，基于Warren-Root双重介质模型思想，建立了考虑解吸-吸附的基质渗流数学模型和裂缝渗流数学模型，并进行了差分离散方法的设计及渗流方程的IMPES方法线性化处理，最后实现了通过Gauss-Seidel迭代编程模拟。现场应用中，在页岩储层水平井压裂时的微地震结果基础上构建了地质模型，所建立的数值模型可分析压力、吸附气量、渗透率、地层物性等多个参数特征对生产的影响，并与页岩气产出规律相符，因此该简便模型可有效指导现场的工程设计及动态分析。
수력압렬후적혈암기장수평정삼류구역내저층정현복잡적렬봉망락형태，고필해흡-흡부궤리적단정삼류수치모형적건립대단정산능영향인소분석구유교강적이론개치화현실의의，기우Warren-Root쌍중개질모형사상，건립료고필해흡-흡부적기질삼류수학모형화렬봉삼류수학모형，병진행료차분리산방법적설계급삼류방정적IMPES방법선성화처리，최후실현료통과Gauss-Seidel질대편정모의。현장응용중，재혈암저층수평정압렬시적미지진결과기출상구건료지질모형，소건립적수치모형가분석압력、흡부기량、삼투솔、지층물성등다개삼수특정대생산적영향，병여혈암기산출규률상부，인차해간편모형가유효지도현장적공정설계급동태분석。
After the hydraulic fracturing of horizontal wells,shale gas reservoir seepage areas show a complex fracture net-work morphology,single well flow numerical model considering desorption-adsorption mechanism has a strong theoretical value and practical significance for analyzing single well production factors. Based on Warren-Root dual media model guiding ideolo-gy,matrix flow mathematical model and fracture flow mathematical model are established considering desorption-adsorption. Methods of discrete differential equations is designed and IMPES seepage linear processing method is carried out,and finally iterative simulation programming is realized through the Gauss-Seidel. Field applications,based on the results of the micro-seismic for fractured horizontal wells in shale reservoir geological model was constructed,the established numerical model can analyze the impact of pressure,gas adsorption,permeability,formation properties and other characteristics on production parameters. The results are consistent with the law of shale gas production,so this simple model can effectively guide the field of engineering design and dynamic analysis.