摘要
裂缝性储集层是塔中地区碳酸盐岩储集层中最重要的类型,控制着奥陶系油气井的产出能力。结合相关地质资料,应用三维有限元法对塔中地区奥陶系进行了现今构造应力场数值模拟。根据格里菲斯岩石破裂准则,预测了奥陶系现今裂缝发育区带。通过统计奥陶系单井裂缝线密度和工业油气井井位分布情况,验证用三维有限元法预测的塔中地区奥陶系构造裂缝发育区和实际裂缝线密度统计及测井解释的裂缝发育区基本吻合,表明塔中地区现今油气成藏区带多位于构造应力高值区。
Fractured reservoir is one of the main types of Carbonate reservoirs in Tazhong area, which controls the petroleum productivity of the Ordovician. Based on the related geological data, the present tectonic stress filed of Ordovician is simulated using 3D finite element method. The fracture-developed zones of Middle-Lower and Upper Ordovician in Tazhong area are predicted with Griffth＇s rupture criterion. The statistical fracture linear density of single well and the locations of oil-gas wells testify that the tectonic fracture zones predicted by using 3D finite element method basically agree with the actual fracture areas in Tazhong. It also shows that the oil-gas reservoirs are mostly located in areas with high tectonic stress fields.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2008年第4期475-477,共3页
Xinjiang Petroleum Geology
基金
国家973重点基础研究发展计划项目
中国海相碳酸盐岩层系多种储层形成机理与分布模式(2005CB422103)资助
关键词
构造应力场
有限元
数值模拟
裂缝线密度
塔中地区
stress field
finite element
numerical simulation
fracture linear density, Tazhong area
作者简介
刘聪（1981-）．女，吉林白山人,在读博士研究生，矿产普查与勘探专业，（Tel）13521316665（E-mail）liucong1999@126．com．
