页岩气新井压裂规模优化设计

发布时间：2018-06-18 22:16

本文选题：页岩气 + 新井压裂规模　；参考：《断块油气田》2016年02期

【摘要】：由于页岩气藏的渗透率极低,一般小于0.1×10-3μm2,对其实施多级分簇大规模体积压裂是目前改善储层导流能力、提高储层产能的关键技术。以涪陵页岩气田某区块为例,基于线网模型,文中提出了一套系统的页岩气藏新井压裂规模优化设计方法。根据老井压裂及试产数据,利用主成分分析法,筛选影响气井产能的关键压裂参数(压裂级数、裂缝导流能力和缝网带长)。采用响应面方法对区块新钻井的压裂施工进行优化设计,得到最佳新井压裂参数:压裂级数3,缝网带长120 m,裂缝导流能力45×10-3μm2·m。通过对老井压裂参数的统计分析,优化设计新井的体积压裂规模,可以最大程度发挥体积压裂的增产效果,实现页岩气藏的高效开发。
[Abstract]:Because the permeability of shale gas reservoir is very low, generally less than 0.1 脳 10 ~ (-3) 渭 m ~ (2), it is a key technology to improve reservoir conductivity and increase reservoir productivity to implement multistage cluster mass volume fracturing. Taking a certain block of Fuling shale gas field as an example, based on the line network model, a set of systematic optimization design method for fracturing scale of new well in shale gas reservoir is put forward in this paper. According to the data of fracturing and production test in old wells, the key fracturing parameters (fracturing series, fracture conductivity and fracture net length) which affect the productivity of gas wells are screened by principal component analysis. The optimum fracturing parameters of the new well are obtained by using response surface method. The fracturing parameters are 3 fracturing series, 120 m fracture network length and 45 脳 10 -3 渭 m 2 of fracture conductivity. Through the statistical analysis of the fracturing parameters of the old well, the volume fracturing scale of the new well can be optimized to maximize the effect of the volume fracturing and the high efficiency development of the shale gas reservoir can be realized.
【作者单位】：中国石油大学石油工程教育部重点实验室;中联煤层气有限责任公司北京研究中心;
【基金】：国家重点基础研究发展计划(973计划)项目“页岩气气藏工程方法基础研究”(2013CB228005)、“致密油高效开发油藏工程理论与方法研究”(2015CB250905) 中国石油大学(北京)引进人才科研启动基金“复杂缝网页岩气藏离散介质数值模拟方法”(2462013YJRC012)
【分类号】：TE357

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