碳酸盐岩裂缝-溶洞型油气藏开发技术探讨

碳酸盐岩裂缝-溶洞型油气藏是中国西部塔里木盆地海相地层中最发育的油气藏类型之一.其最主要的特征是储集空间以裂缝、溶洞为主,非均质性极强,测井、地震资料又很难识别,并且其开发与中国典型的碎屑岩油气藏又有很大区别.在新疆塔河油田的开发过程中,直接投产的井只占10%,大部井都是经过酸压以后投产的.该文利用S70井几次酸压后的生产特点来分析油藏的储层特征,并对裂缝-溶洞型油气藏开发技术进行了探讨. 

AN APPROACH ON THE DEVELOPMENT TECHNOLOGIES OF FISSURE-KARST CAVE-TYPED HYDROCARBON POOLS IN CARBONATE ROCK

The fissure-karst cave-typed hydrocarbon pool in carbonate rock is one of the most developed types of hydrocarbon pools for the marine strata of the Tarim Basin in the western part of China. Its most important feature is that its storage spaces are dominated by fissures and karst caves. The reservoirs have rather strong heterogeneity.The log ging and seismic data are very difficult to dist inguish. Besides,its development is very much different from ty pical clast icrock hydrocarbon pools in China. During the development process of Tahe oilf ield in Xinjiang,the wells brought into production only took 10 percent,and a large part of wells were brought into production after the acid fracturing treatment. In this paper,the productive features of S-70 well after several acid fracturing treatments were used to analyse the reservoir characteristics of oil pools,and the development technologies of fissure-karst cave-typed hydrocarbon pools were discussed.