塔河油田南部盐下奥陶系油藏产量递减特征研究  

THE STUDY ON THE PRODUCTION DECLINE OF FRACTURED AND ORDOVICIAN RESERVOIR BELOW HALITE IN SOUTHERN TAHE OLFIELD

作　　者：马国伟[1] 董伟[1] 李国蓉[1] 李成[2] 甘霖[1] 

机构地区：[1]成都理工大学能源学院,四川成都610059 [2]中石油长庆油田公司,陕西西安710021

出　　处：《新疆石油天然气》2009年第4期44-47,110,共4页Xinjiang Oil & Gas

摘　　要：塔河油田南部盐下奥淘系油藏开发程度较低,通过有限的钻井资料认识油藏有一定的困难,为了深入了解油藏的储层特征,文中采用动态资料间接地认识油藏储层类型。通过研究油井的产量递减特征,把油井划分成4种基本类型:高产稳产型、低速递减型、中速递减型、快速递减型。这四种递减类型分别对应了该区块的四种储集类型:岩溶洞穴型储层,岩溶缝孔洞型储层,溶蚀孔隙型储层,裂隙型储层。岩溶洞穴型储层产量递减不是很明显,岩溶缝孔洞型产量递减较平缓,溶蚀孔隙型储层递减明显,持续时间较长。裂隙型储层递减速度极快,一般持续时间较短。准确识别储层储集类型可以更好指导油田的开发。The formation under the limited penetration can not be recognized clearly as the reservoir below halite in southern Tahe Oilfield exploited only part of the pay-zone.In order to understand the reservoir characteristic,the production data is used so as to analyze it.Based on the law of production decline,the wells in Tahe Oilfield are classified into four types: higher and stabilized production well,declined Slowly well,declined medially well and declined rapidly well,which correspond with four accumulation style: the karst cavernous reservoir,karst fractured-vuggy reservoir,corrosion porous reservoir and fracture reservoir.The decline of the karst cavernous reservoir production is not obviously;the production curve of the karst fractured-vuggy reservoir declines smoothly,corrosion porous reservoir's production declines obviously and keeps a long time.The production of fractured reservoir declines quickly and keeps a short time as usual.To identify reservoir type accurately can direct the oilfield development better.

关 键 词：储层类型 油藏 产量递减 塔河油田 

分 类 号：TE344[石油与天然气工程—油气田开发工程]