An approach to the present-day three-dimensional (3D) stress field and its application in hydrocarbon migration and accumulation in the Zhangqiang depression, Liaohe field, China

作者：Tan CX^*; Jin ZJ; Zhang ML; Tang LJ; Jia CZ; Chen SP; Yang ML; Zeng LB

来源：Marine and Petroleum Geology, 2001, 18(9): 983-994.

• three dimensional stress field
• hydrocarbon migration and accumulation
• Zhangqiang depression

From the measurements of bore-hole breakout, hydrofracturing, and rock acoustic emission in the Zhangqiamg depression, Liaohe field, China, we have determined that the orientation of the maximum principal compressive stress is nearly east-west with a small angle of pitch (no more than 10degrees), and the regression equations of stress gradient with depth are sigma(1) = 8.359 + 0.0142H (r = 0.96) and sigma(3) = 5.801 + 0.00437H (r = 0.94). The present-day three-dimensional (3D) stress field of the Zhangqiang depression is approached using measured data and by 3D modeling, The approach shows that a full 3D crustal stress field analysis of an oil basin is consistent with the actual measurements. And then we use fluid potential or gradient to discuss the quantitative correlation between crustal stress and hydrocarbon migration and accumulation. The results show that low fluid potential areas surrounded by high regions are eligible for hydrocarbon accumulation and have been tested at the Keerkang oil field. The results also show that the distribution of favorable areas for hydrocarbon accumulation varies in different layers in space and is used in hydrocarbon exploration in the Zhangqiang depression. Therefore, the understanding of the 3D crustal stress field of a basin is essential for evaluating hydrocarbon migration and accumulation, and the technology and methodology developed here can be applied to other petroliferous basins.

• 出版日期2001-11
• 单位中国石油大学（北京）; 中国地质科学院地质力学研究所