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苏里格气田某区块在参考前期裸眼分段压裂试验的基础上,于2010年度规模化推广应用水平井裸眼分段压裂技术,取得了良好的增产效果。水平井压后产量一般在104m3/d以上,为同区块直井产量的3～5倍。该区块水平井的水平段长度一般超过800 m,初期水平井分4段压裂,之后技术人员在增加裂缝段数、加砂规模、水平段长度等方面积极探索,以期达到更佳的开发效果。已实施井的投产效果表明:裂缝段数、加砂规模、水平段长度不直接影响产量;有效储层长度和气测表现在一定程度上影响压后产量;提高水平段有效储层钻遇率有利于增加压后产量。
Based on the open-hole segmented fracturing test in the early stage of the Sulige gas field, the 2010 horizontal scale popularization and application of open-hole fractured fracturing technology in horizontal well has achieved good stimulation effect. Horizontal well pressure after the production is generally above 104m3 / d, with the block production of straight wells 3 to 5 times. The length of the horizontal section of horizontal wells in this block is generally over 800 m, and the initial horizontal well is divided into 4 sections for fracturing. Afterwards, technicians actively explore ways to increase the number of fractures, sand scale and horizontal section length in order to achieve better development results . The put into operation of the well has shown that: the number of fractures, sand scale, the length of the horizontal section does not directly affect the yield; effective reservoir length and gas performance to some extent, affect the post-press output; improve the level of effective reservoir drilling rate is conducive Increase the post-press output.