致密储层水平井重复压裂技术优化  

Optimization of horizontal well refracturing technology in tight reservoirs

作　　者：宋丽阳 王纪伟 李凤霞[1] 刘长印[1] 苏建政[1] 张汝生[1] Song Liyang;Wang Jiwei;Li Fengxia;Liu Changyin;Su Jianzheng;Zhang Rusheng(Gas Reservoirs Production of Sinopec Petroleum Exploration and Production Research Institute,Beijing 100083,China)

机构地区：[1]中国石油化工股份有限公司石油勘探开发研究院,北京100083

出　　处：《油气藏评价与开发》2018年第4期63-67,共5页Petroleum Reservoir Evaluation and Development

摘　　要：为改善致密低渗储层水平井重复压裂效果,提高压后生产经济效益,针对水平井重复压裂过程中选井选层方案、压裂工艺技术开展优化研究:应用多层次模糊综合评判法和人工神经网络法,计算研究各地质因素和工程因素对重复压裂改造效果的影响规律,确定压裂选井选层标准;研究压裂及生产过程中应力场变化及裂缝转向、延伸规律,优选压裂材料;以现场数据为依据,应用真三维压裂模拟软件优化三口目标井重复压裂施工参数。研究成果可为水平井重复压裂技术的科学、高效应用提供指导。In order to improve the refracturing effects of the tight reservoirs and the economic benefits,we provided the optimization methods for the well and layer selection and fracturing design in the refracturing process of the tight wells:the multi-level fuzzy comprehensive evaluation method and artificial neural network method were applied to study the influence of the geological and engineering factors on the refracturing effect,so that the well and layer selection criteria of refracturing for the horizontal wells in tight reservoirs could be determined.The stress field variation and fracture extension rule were studied,and the fracturing material for tight reservoirs was provided.Based on the field production data,3D fracturing simulation software was used to optimize the refracturing parameters of 3 target horizontal wells.The studying results can scientifically guide the application of refracturing technology in tight reservoir wells.

关 键 词：致密储层 重复压裂 水平井 

分 类 号：TE357[石油与天然气工程—油气田开发工程]