微构造与油气聚集关系初探

Preliminary Study on the Relation Between Ministructure and Oil and Gas

谢丛姣¹,刘明生²,杨俊红²

Xie Congjiao，Liu Mingsheng, Yang Junhong

1.中国地质大学资源学院石油系,2.华北油田勘探部

China University of Geosciences , Hubei 430074 , P. R. China

油层微构造包括正向微型构造如小高点、小鼻状凸起和小构造阶地等,为油气富集区;负向微构造如小向斜和小沟槽等,为低含油气或严重水淹区。实践表明同一时期投产的加密井,正向微构造区生产情况最好,负向微构造区最差,且后者仅为前者的1/ 3 。因此在制定调整方案时应充分考虑微构造因素,尽可能把加密井钻到正向构造区,负向构造区只钻注水井。把握好微构造与油气的关系对油田增产挖潜具有一定的指导意义。

This paper is mainly focus on the research of mini-structures ,and further studies on the action which the mini - st ructure cont rol the productions of oil wells. The mini - st ructure included positive mini - strcuture and negative mini - structure , the former ones are regions of oil and gas enrichment and the later ones are regions where severe water invasion occurs. Further more, the yield of the later is only one - third of the former. Field practices demonst rates that wells located on the positive mini - structure are better ones, while those on the nagative mini - structure are better ones , while those on the negative mini - structures are inferion to the designing of an adjustment program. Mini - structure should be considered. Infill wdlls should be placed on the positive st ructures and only injection wdlls in the drilled in the negative mini -st ructures if it possible. It will be result in an infill drilling and adjustment program.