川东北山前高陡构造地应力精细计算方法  

Fine Calculation Method Study of Crustal Stress of High-Steep Conformation in Northeast Sichuan

作　　者：范翔宇[1] 康海涛 龚明[1] 何传亮[3] 陈颖杰[4] 

机构地区：[1]西南石油大学石油工程学院,四川成都610500 [2]中石化中原油田西南钻井公司,四川南充63700 [3]中石化西南石油局测井公司,四川成都610100 [4]中国石油大学(北京),北京昌平102249

出　　处：《西南石油大学学报（自然科学版）》2012年第3期41-46,共6页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：西南石油大学与中石化西南测井分公司联合攻关课题(XKY2010125-XNCJ2009-08)

摘　　要：川东北地质构造极其复杂,80%以上都是山前高陡构造。复杂的构造条件给油气资源的勘探开发带来了极大的挑战,特别是对该区地应力大小、方向及展布规律的认识不清,给油气建井带来了很大困难。充分利用测井资料的连续性、经济性和高分辨率等优势,综合运用数理统计方法以及计算机综合成图技术,对该区的岩石力学参数和地应力进行了精细计算与研究,重点建立起适合川东北高陡构造的垂向应力离散分析模型以及水平应力精细求解公式。同时,提出了平均水平应力的概念和取值范围,并针对研究工区实际地质情况进行了深入计算和检验。所取得的成果大幅度提高了对川东北山前高陡构造地应力的计算精度和展布规律的认识。The northeastern zone of Sichuan is one of the regions that are rich in oil and gas resources discovered in China. The geological structures in this area are extremely complicated, 80 percent of which are high-steep conformation. The complicated structure conditions have a great challenge for oil and gas exploration and development. Especially, the unclearly understand- ing of the magnitude, direction and transverse distribution law of crustal stress brings great difficulty in well construction. The paper, by making full use of the continuity, economy and resolution of logging data, and applying statistic methods and com- puter comprehensive mapping technology, calculates and studies the rock mechanic parameters and crustal stress precisely, primarily sets up the discrete analysis model of vertical stress and precise solution formula of horizontal stress. Meanwhile, the paper puts forward the concept and value range of average crustal stress, calculates and tests it in depth according to actual geological condition of the work area. The results obtained greatly improve the understanding of transverse distribution law and calculation accuracy of crustal stress in high-steep conformation of northeastern Sichuan, and, provides reference for the calculation research on other same structures.

关 键 词：山前高陡构造 地应力 计算模型 岩石力学参数 川东北 

分 类 号：TE132.1[石油与天然气工程—油气勘探]