湘页1井大型清水压裂工艺技术研究

摘要

Well Xiangye-1 is one of the key exploration shale gas wells within Hunan, which has high maturity and total organic con-tent, but low porosity and permeability. It needs large scale fracturing to release shale gas. According to rock characteristics, well Xiangye-1 has high brittle mineral content and small differences of principal stress, and is suitable for SRV. For the reason of shal-low buried target layer and low fluid friction, water was used instead of slick-water. The total water volume is 1 520 m3, the proppant is 82 m3, and post-fractured gas production is 2 700 m3/d. It has certain references for the future stimulation of shale gas well.%湘页1井是位于湖南境内的一口页岩气勘探重点井，页岩层段气测显示良好，孔隙度和渗透率低，需要大规模压裂释放页岩气。根据岩石特征研究，湘页1井页岩脆性矿物含量高、主应力差异小、天然裂缝发育，体积压裂适应性强。该井目的层埋藏浅，施工摩阻低，采用清水代替滑溜水进行压裂，施工用液1520 m3，累计加砂82 m3，压后最高产气量2700 m3/d，为今后页岩气井压裂施工起到一定的借鉴作用。