缝洞型碳酸盐岩潜山油藏研究现状及技术展望

碳酸盐岩潜山油藏储层孔隙主要为裂缝和溶洞,其中溶洞是主要的储集空间,裂缝是主要的渗流通道。由于其空间分布的不规则性和缝洞本身的多尺度性,使得其开采机理、开发方式和如何高效开发仍是一个难题。文章从该类油藏地质特征入手,详细描述了其油藏类型和开发方式研究、以及缝洞渗流特征和数值模拟研究的进展,指出了研究应用中存在的问题,并推荐了有发展前景的研究方向。

Present research status and technique prospects on fracture-cavern type carbonate buried-hill reservoir

The reservoir pore of carbonate buried-hill reservoir is fracture and cavern mostly. The cavern is the primary reservoir space and fracture is the primary seepage channel. Because its space distribution is irregular and fracture - cavern scales are much, its development mechanism, development way and how to develop efficiently are still the difficult problems. Started from geological characteristics of this type of the oil reservoirs, the research progression of reservoir type and development way, seepage characteristics and numerical simulation are described in detail. The problems in research and application are pointed out and the research direction of development prospects is recommended.