构造裂缝产状演化规律表征方法及其应用

发布时间：2018-08-09 12:19

【摘要】：针对构造裂缝产状演化规律难以准确定量表征的问题,通过确定研究区裂缝力学性质、岩石力学参数,在恢复古构造形态的基础上,对裂缝形成时期古应力场数值模拟后选择适用性的岩石破裂准则,预测裂缝形成时期的产状分布。提出了造缝期应力场预测古裂缝产状,后期构造活动改造裂缝产状的思路,即通过早期岩层、晚期岩层的三维空间变化规律,建立了不同构造活动时期对应的裂缝空间转换理论模型,利用推导的数学算法,定量分析裂缝的演化规律,进而提高了现今裂缝产状的预测精度。最后,以铜城断裂带东翼阜二段储层为例进行了构造裂缝演化规律定量描述工作,结合构造演化,将阜二段储层构造裂缝演化分为阜宁运动晚期裂缝形成发育、戴南运动期裂缝继承发展、三垛运动期裂缝差异分离3个阶段。
[Abstract]:In view of the problem that it is difficult to accurately and quantitatively characterize the occurrence and evolution law of structural fractures, through determining the fracture mechanical properties and rock mechanics parameters in the study area, on the basis of restoring paleotectonics, After numerical simulation of paleo-stress field in fracture formation stage, the applicable rock fracture criterion is chosen to predict the occurrence distribution of fracture formation period. The paper puts forward the idea of predicting the occurrence of paleo-fractures during the fracture forming period and reforming the occurrence of the fractures by the late tectonic activity, that is, through the three-dimensional spatial variation law of the early and late rock formations. The theoretical model of space transformation of fractures corresponding to different tectonic active periods is established, and the evolution law of fractures is quantitatively analyzed by using the derived mathematical algorithm, thus improving the prediction accuracy of the occurrence of fractures nowadays. Finally, taking the reservoir of Fu2 member in the east wing of Tongcheng fault belt as an example, the evolution law of structural fractures is quantitatively described. In combination with structural evolution, the evolution of structural fractures in the reservoir of the second member of Fu member is divided into the formation and development of fractures in the late Funing movement. There are three stages of crack succession and development in Dannan movement period and the difference separation of cracks in three stacking movement period.
【作者单位】：中国地质大学(北京)能源学院;中国地质大学(北京)海相储层演化与油气富集机理教育部重点实验室;中国地质大学(北京)页岩气勘查与评价国土资源部重点实验室;中国石油大学地球科学与技术学院;中国石油新疆油田分公司风城油田作业区;中国地质(大学)北京页岩气勘查与评价国土资源部重点实验室;
【基金】：国家自然科学基金项目(41372139,41072098) 国家科技重大专项专题(2016ZX05046-003-001,2011ZX05018-001-002,2011ZX05033-004)~~
【分类号】：P542

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