石油钻采工艺2016，Vol.38Issue(1)：36-41,6.DOI:10.13639/j.odpt.2016.01.008
大牛地气田下套管作业中环空波动压力分析
Analysis of annular lfuctuation pressue pattern during casing running operation in Daniudi Gas Field
摘要
Abstract
Liujiagou Formation of Daniudi Gas Field is low fracture pressure belt, so lfuctuating pressure caused by casing running may easily lead to lfuid leakage. In order to solve this problem, a model for calculating lfuctuating pressure when running casing was built based on the steady lfuctuating pressure theory, considering the local resistance effect of cenrralizer. Then the effect of drilling lfuid properties, casing running speed and annular clearance, etc. on lfuctuating pressure were analyzed based on the model. Result shows that, with increase of drilling lfuid density and consistency coefifcients, gel strength, casing running speed and centralizers, the lfuctuating pressure increases with the decrease of annular clearance. In view of the inlfuencing factors of lfuctuating pressure, this paper presents the technical countermeasures for safe casing running, which is of great reference signiifcance to avoid leakage of Liujiagou Formation caused by pressure lfuctuation during casing running.关键词
下套管/波动压力/预测模型/钻井液性能/扶正器/环空间隙/技术对策Key words
casing running/lfuctuating pressure/prediction model/drilling lfuid/centralizer/annular clearance/technical countermeasure分类
能源科技引用本文复制引用
王锦昌..大牛地气田下套管作业中环空波动压力分析[J].石油钻采工艺,2016,38(1):36-41,6.基金项目
“十三五”国家科技重大专项“低丰度致密低渗油气藏开发关键技术”（编号2016ZX05048）。 （）
