重庆科技学院学报（自然科学版）2024，Vol.26Issue(1)：34-40,7.DOI:10.19406/j.issn.1673-1980.2024.01.006
渝东南地区龙潭组煤层气高效压裂及排采工艺探索
Exploration of Efficient Fracturing and Drainage Technology for Coalbed Methane in Longtan Formation of Southeast Chongqing
摘要
Abstract
Problems such as inadequate coal seam reconstruction,long period of gas production and low yield that existed in the Southeast Chongqing area.In order to improve the efficiency of gas well development,the innovative test,taking the Longtan formation development of well D1 in this area as an example,adopts the large-displace-ment,large-scale,multi-round fracturing technology system with"far support"as the core concept and supple-mented by the drainage system of"starting production after rapid discharge and stabilizing pressure after reaching production target".The research results show that the application of this fracturing technology can significantly im-prove the permeability of the reservoir,and gas is found immediately after pressure completion,and the gas volume increases gradually during the rapid flowback process until it is stable above 5 000 m3/d.关键词
渝东南地区/煤层气/龙潭组/压裂工艺/排采制度Key words
Southeast Chongqing area/coalbed methane/Longtan formation/fracturing process/drainage system分类
能源科技引用本文复制引用
李佳欣..渝东南地区龙潭组煤层气高效压裂及排采工艺探索[J].重庆科技学院学报（自然科学版）,2024,26(1):34-40,7.基金项目
中国石化科技部项目"低压煤系气藏地质工程一体化高效开发技术"(P20074-1),"中国石化煤层气勘探战略选区研究"(P21086-5) （P20074-1）
