天然气勘探与开发2025，Vol.48Issue(2)：92-102,11.DOI:10.12055/gaskk.issn.1673-3177.2025.02.009
川南泸州区块深层页岩气井压裂参数优化
Optimization of fracturing parameters for deep shale gas wells in Luzhou block,southern Sichuan Basin
摘要
Abstract
The existing fracturing technologies are not very adaptable to the deep shale gas development in the Luzhou block of southern Sichuan Basin,where the development of natural fractures is abnormal and the geological-engineering conditions are complex.To solve this problem,a 3D reservoir model was established to analyze the requirements for the geometric parameters of hydraulic fracture network with the goal of fully producing well-controlled reserves.Then,matrix model and natural fracture model were constructed based on the fine division of natural fracture patterns.Finally,the key fracturing parameters such as cluster number per stage,flow rate,and fracturing fluid intensity were optimized by using the hydraulic fracturing numerical simulation technology.The results show that the natural fractures in the Luzhou block are divided into two types(network fracture and unidirectional fracture),and the latter is subdivided into four patterns(high-angle fracture,low-angle fracture,parallel proximal fracture,and parallel distal fracture).The fracturing parameters for the two fracture types are optimized by using the numerical simulation.The results have been successfully applied to the test well on site,indicating that no downhole complexity occurred during the fracturing operation,and the estimated ultimate recovery(EUR)after fracturing is higher than the average of the well area.It is concluded that the optimized fracturing parameters for different natural fracture types effectively guide the optimization of fracturing plan for deep shale gas wells in the Luzhou block,and provide technical guarantee of fracturing parameter design for the development of deep shale gas in the study area and similar blocks.关键词
四川盆地南部/泸州区块/深层页岩气/压裂模拟/压裂缝网/参数优化/矿场应用Key words
Southern Sichuan Basin/Luzhou block/Deep shale gas/Fracturing simulation/Hydraulic fracture network/Parameter optimization/Field application引用本文复制引用
姚志广,邵莎睿,黄永智,杜雨柔,董研,徐颖洁..川南泸州区块深层页岩气井压裂参数优化[J].天然气勘探与开发,2025,48(2):92-102,11.基金项目
中国石油西南油气田公司科研项目(编号:20230302-12). （编号:20230302-12）
