致密油藏压裂裂缝延伸展布影响因素研究——以X13断块为例  

Study on the influencing factors of fracture extension and distribution in tight oil reservoirs:Take the X13 Block as an example

作　　者：廖伟 LIAO Wei(Petroleum Engineering Technology Research Institute of Jiangsu Oilfield Company,SINOPEC,Yangzhou 225009,China)

机构地区：[1]中国石化江苏油田分公司石油工程技术研究院,江苏扬州225009

出　　处：《复杂油气藏》2025年第1期31-37,共7页Complex Hydrocarbon Reservoirs

摘　　要：水力压裂裂缝延伸展布的影响因素包括地质因素和工程因素,地质因素主要有天然裂缝、岩石力学特性及水平应力差等;工程因素主要有压裂施工液量、砂量及排量等。近年来陆续有学者开展了天然裂缝、施工参数对压裂改造效果的影响研究,但对天然裂缝欠发育或弱发育的致密储层压裂得到的裂缝延伸展布的主控因素仍需开展深入研究。本文以高邮凹陷X13断块的X13-1井为研究对象,通过数值模拟该井19.9 m压裂段(3136.1~3156.0 m)在不同地质因素和工程因素下的裂缝延伸展布情况,分析该区块压裂裂缝延伸展布的具体主控因素,为该区块致密储层高效压裂工程提供分析指导。The influencing factors of fracture extension and distribution in hydraulic fracturing include geological and engineering factors.Geological factors mainly include natural fractures,rock mechanical properties,and horizontal stress differences.The engineering factors mainly include the volume of fracturing fluid,sand volume,and flow rate.In recent years,scholars have successively conducted research on the impact of natural fractures and construction parameters on the effectiveness of hydraulic fracturing,but there is still a need for indepth study on the main controlling factors of fracture extension and spreading obtained by fracturing tight reservoirs with underdeveloped or weakly developed natural fractures.This paper takes the X13-1 well in the X13 Block of the Gaoyou Depression as the research subject,and through numerical simulation of the fracture extension and distribution in the 19.9 m hydraulic fracturing section(from 3,136.1 m to 3,156.0 m)of the well under different geological and engineering factors,it analyzes the specific main controlling factors for fracture extension and distribution in this block,which can provide analytical guidance for the high-efficiency fracturing of tight reservoirs in this block.

关 键 词：水力压裂 致密储层 数值模拟 裂缝展布延伸 主控因素 

分 类 号：TE357[石油与天然气工程—油气田开发工程]