石油钻采工艺2016，Vol.38Issue(1)：23-29,7.DOI:10.13639/j.odpt.2016.01.006
定向井泥页岩地层复杂事故处理
Handling of complex accidents in shale formations of directional well
摘要
Abstract
Complex accidents may occur when drilling to shale formation in directional wells, even well plug-back accident may occur due to pipe sticking. To solve this problem, research on practice technique was conducted to prevent and handle complex accidents. By the safety and economic-oriented principle and through analysis of formation lithologies, optimization was made on drilling lfuid property adjustment, complex accident handling and supporting equipment, and different methods were employed to remove the complex accidents occurred when drilled to shale formations. Analysis and research were conducted to the complex accidents occurred in drilling three directional/horizontal wells: Ma 2-1H, Gaomiao 103D and LeiX, the general characters of complex accidents were analyzed, esp. upon different downhole inlfuence factors. The general drilling situation prior to and after drilling into shale formation, handling process of complex accidents and cause analysis were summarized from point to area and their general characters were found out, then suggestions were made to prevent complex accidents when drilling into shale formation in directional/horizontal wells. Also, experiences were collected from directional/horizontal wells where complex accidents had occurred.关键词
定向井/泥页岩/复杂事故/分析/预防措施Key words
directional well/shale/complex accident/analysis/preventive measure分类
能源科技引用本文复制引用
赵家明,胡家森,刘秋霞,劳达纭,张艳,郭定雄..定向井泥页岩地层复杂事故处理[J].石油钻采工艺,2016,38(1):23-29,7.基金项目
国家自然科学基金“页岩气开发条件下泥页岩井壁稳定与破裂机理研究”（编号51174036）。 （）
