摘要
针对四川盆地八角场气田上三叠统香四气藏储层薄的特点，为了搞好气田的开发，必须查明储层的横向变化和提供储层的各种参数。四川石油管理局在气田上进行井下接收单次三维开发地震方法试验，共完成三维面积１００多ｋｍ＾２。采集方法设置多个区块，每个区块设一条主测线，将检波器埋置在２０ｍ深的井中接收，用纵和非纵激发相结合的单次三维观测方法采集，选取５４９．２区块约２１ｋｍ＾２的三维资料在西北石油地质研究所进行“
Aimed at the characteristic that the reservoir of T_3x￣4 gas pool in Bajiaochang gas field in Sichuan Basin is thin one, the borehole receiving experiment of single 3-D production seismics is made and over 100 km￣2 areas are finished. Acquisition method is by dividing several districts and setting up a main survey line in every district; Then put a geophone into a well of 20 m depth. The acquistion is by single 3-D observation method combining vertical excitation with non-vertical excitation. 3-D data about 21 km￣2 selected in 549.2 district are treated by 'three highs and 3D migration. Horizontal stacking data are selected to make logging data constrait inversion. 84 parameter sections of wave impedence, interval velocity, density and porosity of 21 survey lines are obtained to provide abundent data for reservoir description and reserve calculation.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
1994年第5期7-10,共4页
Natural Gas Industry
关键词
储集层
预测
气藏
地震数据
production seismics
single coverage three dimensions
high resolution exploration
reservoir
lateral prediction.
