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Zhong F.,Drilling Engineering Service of Bohai Drilling and Exploration Co. | Song Y.,Drilling Engineering Service of Bohai Drilling and Exploration Co. | Fei Z.,Drilling Engineering Service of Bohai Drilling and Exploration Co. | Wu H.,Drilling Engineering Service of Bohai Drilling and Exploration Co. | And 3 more authors.
Drilling Fluid and Completion Fluid | Year: 2010

Down hole problems were encountered in Block D in Burma, such as collapsing, tight hole, leaking and kick. These problems resulted in narrow safety window, limitation of cementing quality, uncertainty of displacement efficiency and difficulties of prevention of leaking and channeling. To solve these problems, many measures were taken, including several sealing methods, squeezing from drill stem and annular, low viscosity drilling fluid, abundant spacer, non-permeable gradients cement column, compound flow pattern displacement and liner hanger etc., and field application in 3 wells was satisfactory.

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