摘要
为提高电缆地层测试对各向异性储层产能评价的精度,避免应用DST测试产生的高测试成本,利用自行设计的多探头电缆地层测试仪器和解释模型,求取既定方位的储层平面上正交方向的两个渗透率,利用基于地质统计学的变差函数分析方法分析储层实际主渗透率方向,结合矢量化渗透率计算模型,计算实际储层的主渗透率和垂直主渗透率方向的最小渗透率,给出通过电缆地层测试获得储层实际平面渗透率各向异性的方法。结合椭圆形边界油藏产量计算模型,给出渗透率各向异性地层电缆地层测试产能预测方法。电缆测试方法计算的产能结果与DST测试结果基本吻合。
In order to improve the precision of deliverability prediction by wireline formation testing in anisotropic reservoirs and avoid the high testing cost of applying drillstem test （DST） , a multi-probe wireline formation tester and interpretation model were established. Two permeabilities orthogonal to each other in a designed orientation layer were obtained. The pri- mary permeability direction of reservoir was analyzed by variation function analysis method based on geostatistics. Combined with calculation model of vector permeability, the primary permeability and the minimum permeability vertical to the primary permeability orientation were calculated. A method to obtain the areal permeability anisotropy through wireline formation tes- ting was presented. In consideration of the production calculation model for reservoirs with elliptical boundaries, the deliver- ability prediction method of wireline formation testing was given for anisotropic reservoirs. The deliverability predicted by this method agrees with that of predicted by DST.
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第4期93-97,共5页
Journal of China University of Petroleum(Edition of Natural Science)
基金
国家'863'计划项目(JSKF2004YJ38)
长江大学科研发展基金项目(CJDX2008-06)
关键词
各向异性地层
电缆地层测试
产能预测
anisotropic formation
wireline formation testing
deliverability prediction
