Hydraulic fracturing of tight sandstone reservoirs is an important method of developing this type of unconventional oil and gas resources. The evaluation of in-situ stress distribution and rock mechanical parameters of fractured wells is the prerequisite for fracturing design. Therefore, the development of a calculation method to evaluate the stress distribution and mechanical parameters of rocks, based on a single well in-situ stress data, is the key to establish the optimal fracturing design. In this paper, based on the correlation between the laboratory experimental data and the logging response, we have plotted the initial stress profile and then applied the proposed method of combining density curve and natural gamma curve to correct the calculation results. In the case of a limited number of wells, the obtained profile correction model demonstrated satisfactory matching with laboratory experimental data.

致密砂岩油藏水力压裂是开发此类非常规油气资源的重要手段。压裂井地应力分布和岩石力学参数评价是压裂设计的前提。因此，开发一种基于单井地应力数据评估岩石应力分布和力学参数的计算方法，是建立最优压裂设计的关键。本文根据室内实验数据与测井响应的相关性，绘制了初始应力剖面，然后应用密度曲线和自然伽马曲线相结合的方法对计算结果进行修正。在井数有限的情况下，