火山岩油气藏水力压裂难点及其措施

The Difficulties and Measures of the Hydraulic Fracturing about Volcanic Rock Reservoir

火山岩可以成为良好的油气储层。由于火山岩的组成、结构及其各种勘探条件的复杂性,火山岩油气藏又是目前油气勘探的难点。常规开采方式很难取得经济产能,必须进行压裂改造。本文针对火山岩储层裂缝破裂和延伸机理认识不清、没有火山岩测试压裂解释方法以及"五高"的压裂难点,介绍了压裂破裂与延伸模型的建立、测试压裂现场快速解释技术、高温压裂液体系、水力压裂裂缝控制与延伸技术等压裂改进技术。

Volcanic rock can become favorable oil--gas reservoirs. However, due to the complexity of the constituent＇, Structure and different kinds of exploration condition of the volcanic rock, volcanic rock reservoir is the difficulty of the hydrocarbon prospecting. Conventional mining mode is very hard＇to acquire the economic level, so hydraulic fracturing technology must be done. Based on the unclear mechanism of the crack rupture and extension of the volcanic rock reservoir, no interpretation in the testing fracturing of the volcanic rock as well as the existence of the ＂five--high＂, this paper, introduces the relevant fracturing techniques, as follows ： the establishment of crack rupture and extension, the technique of the testing fracturing fast interpretation in field, high temperature fracture liquid system, and the crack controlling and extension technology.