摘要
牛东火山岩油藏岩性、储集结构的复杂性以及物性、含油性和力学性质在分布上的强非均质性,决定了压裂改造机理不同于砂岩油藏,表现为高应力、高滤失、高缝内扭曲、难控缝等技术难题。依据该油藏开发压裂的大量资料,介绍了该油藏储集体特征的研究成果和压裂技术机理;引入岩体力学观点,提出并实施了火山岩劈裂法压裂技术,论述了火山岩劈裂法压裂造缝的特殊机理及施工模式。在该油藏应用结果表明,有效解决了火山岩压裂增产难题,效益显著。
Hydraulic fracturing for well stimulation in the volcanic reservoir was a new problem.The mechanisms of volcanic fracture were very different from that of sandstone reservoir, displaying at technical puzzles such as high stress, high leakoff rate, high contortion in fissure and hard-controlling of fractures .These differences resulted from the complication of its lithologic association and reservoir structure ,the great heterogeneity of its osmose, oiliness and mechanical characters. This article, on the basis of the abundant data, introduces geologic fracturing technique and mechanism of the hydraulic split-fracturing technology. The result indicates that the problem of stimulation volcanic reservoirs is effectively solved .This technology may provide valuable experience for the internal similar reservoir stimulation.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2009年第3期294-297,共4页
Journal of Oil and Gas Technology
基金
中国石油天然气股份有限公司资助项目(中油勘重字2006-2)
关键词
牛东油田
火山岩改造
劈裂法压裂
Niudong Oilfield
volcanic reconstruction
stimulation
hydraulic split-fracturing
