川东北海相地层特性与钻井井控

摘要

It’s difficult to establish a static balance of shaft pressure in the northeast of Sichuan marine strata due to the tendency of the alternating appearances of overflow and leakage during drilling operations caused by the particular strata characteristics of lithology,hydrocarbon accumulation,unusually high and low pressure.According to the special conditions of well control in northeastern Sichuan marine strata,this paper,based on the well control theory and drilling practices,sums up the key links and working methods of well control during drilling in the marine strata of northeastern Sichuan Province.%川东北海相地层的岩性特点、油气聚集、异常高压和异常低压在海相地层的特点,决定了海相地层在钻井施工中容易出现溢流和井漏交替发生的现象,很难建立井筒压力的静态平衡。川东北海相地层的钻井井控有其特殊性,根据井控技术理论与钻井现场实际,针对川东北海相地层的钻井工作,总结出川东北海相地层的钻井井控工作要点和工作思路。