摘要
安塞油田属典型的“低压、低渗、低产”三低油藏，新投油井只有通过压裂改造方能建产，大部分井仍需进行重复改造保证持续稳产。为此，安塞油田自20世纪80年代以来积极探索和完善压裂工艺，已基本形成了控水和体积压裂两大技术体系。回顾了安塞油田压裂工艺进展，并分析了现有工艺技术的适应性，指出了下步方向，旨在为同类油藏压裂改造提供借鉴和参考。
Ansai oilfield is a typical three-low reservoir （＂low pressure, low permeability, low yield＂）. Only if we make new production wells fractured can we build the production capacity. Most of the wells still need to repeat the transformation as to ensure sustained and stable production. To this end, Ansai oilfield has actively explored and improved the fracturing process since 1980＇s. and has basically formed two technical systems of water control and tridimensional fracturing. This paper reviews the development of fracturing process in Ansai oilfield, analyzes the adaptability of existing technologies, and points out the direction for the next step, so as to provide reference for the similar reservoir fracturing.
关键词
安塞油田
压裂工艺
工艺进展
下步方向
Ansai oilfield
fracturing technology
technological progress
the next direction
