论文部分内容阅读
SK地区由于受古构造运动的影响,尤其是受喜山和燕山构造运动的影响,其地质构造复杂,地层高陡、地层异常高压、地应力强,储层表现为低孔低渗高压、天然裂缝发育。已有资料表明,地应力大小和方向与储层有效性关系密切,本文利用常规测井和声电成像测井资料,基于岩石力学实验和Kaiser地应力实验,结合压裂、地层测试等数据,建立适合于SK地区高陡构造地层的地应力计算模型,并提取储层有效性评价的地应力指标,分析其与裂缝发育程度的关系,为工区从地应力角度评价低孔低渗裂缝性砂岩储层有效性提供了重要的判据。
Due to the influence of Paleo-tectonic movement, especially in the Xishan and Yanshan tectonic movements, the SK area is characterized by complex geological structure, steep and steep strata, abnormally high strata pressure, strong geostress, low porosity and low permeability high pressure reservoir, and natural Crack development. The available data show that the magnitude and direction of geostress are closely related to reservoir effectiveness. Based on the data of conventional well logging and acoustic-electrical imaging logging, based on the rock mechanics test and Kaiser stress test, combined with the data of fracturing and formation testing, The geostress calculation model suitable for high-steep tectonic strata in SK region is established and the geostress index of reservoir validity evaluation is extracted. The relationship between the geostress and the degree of fracture development is analyzed, and the influence of low porosity and permeability fractured sandstone The validity of the reservoir provides important criteria.