石油钻采工艺2012，Vol.34Issue(2)：17-19,3.
大位移井井眼清洁监测技术在大港油田的应用
Establishment of bore hole cleaning and monitoring technology and its application in Dagang oilfield
摘要
Abstract
Bore hole cleaning is one of the key technologies of extended reach well drilling, with the law of annulus cutting transport as the core. With the technological development of extended reach wells and complex structural wells, the bore hole cleaning and monitoring technology faces new difficulties and challenges. The problems urgent to be resolved are how to monitor the cutting transport under complex geological condition and in complex structural well, and how to predict the time of cuttings forming bed, in order to help judge and solve the downhole problems. Based on the law of cutting transport and the forming mechanism of cutting bed, the multilayer cutting transport model is adopted, the ECD curve to monitor the conditions of bore hole cleaning is established, considering the effect of cuttings on annular pressure lost and the transformational relation between annular pressure lost and equivalent circulation density. It is used in Well ES-H6 of Dagang oilfield, and the application shows that the ECD curve is an important criterion for measuring the bore hole cleaning condition, and it should be controlled within a reasonable range. Besides, the ECD is related to such factors as annular loads, annular velocity, mud property, and so on. Reasonable control of mud property and rotational speed is beneficial to bore hole cleaning of extended reach wells.关键词
大港油区/井眼清洁/ECD/环空压耗Key words
Dagang Oilfield/ bore hole cleaning/ ECD/ annular pressure lost分类
能源科技引用本文复制引用
汪志明,翟羽佳,高清春..大位移井井眼清洁监测技术在大港油田的应用[J].石油钻采工艺,2012,34(2):17-19,3.基金项目
国家科技重大专项“大型油气田及煤层气开发”子课题(编号:2008ZX05056-02-03-06)部分研究内容. （编号:2008ZX05056-02-03-06）
