鄂尔多斯盆地合水油田庄36区油井水淹规律  

Water-out Regulation of Wells in Zhuang 36 Area of Heshui Oilfield

作　　者：曾凤凰 Zeng Fenghuang(No.12 Oil Production Plant,Changqing Oilfield Company,PetroChina,Qingyang 745000,Gansu)

机构地区：[1]中石油长庆油田分公司第十二采油厂

出　　处：《长江大学学报（自然科学版）》2019年第5期29-33,I0004,I0005,共7页Journal of Yangtze University(Natural Science Edition)

摘　　要：鄂尔多斯盆地合水油田庄36区为典型的特低渗油藏,其开发过程中高含水油井多,开发效果差。对油井水淹情况分析得出该区油井水淹主要有2种类型,即缓慢上升型和暴性水淹型,而造成2种油井水淹类型的关键因素是油水井之间的注采对应性及裂缝发育。注采对应性是影响油井水淹的关键因素,在注采对应的情况下,如果油水井间砂体连通,无裂缝发育,油井将会缓慢水淹;不管砂体是否连通,如果存在裂缝,注入水沿着裂缝突进,造成油井暴性水淹。Zhuang 36 Area in Heshui Oilfield is a typical ultra-low permeability oil reservoir. There are many high water-cut oil wells in the development process and the development effect is poor. Through the analysis of water-out performance of oil wells, it is concluded that there are two main types of water-out of oil wells in this area: slowly ascending type and sudden water flooding type. The key factors causing the two types of water-out are injection-production correspondence between oil and water wells and fracture development. The injection-production correspondence is the key factor affecting water flooding of oil wells. Under the corresponding conditions of injection and production, if the sand bodies between oil and water wells are connected and there are no fracture developed, the oil wells will be slowly flooded. Whether the sand body is connected or not, if there is a fracture, the injected water breaks through along the fracture, a sudden water flooding is induced.

关 键 词：含水特征 水淹规律 延长组 合水油田 鄂尔多斯盆地 

分 类 号：TE331[石油与天然气工程—油气田开发工程]