Optimization and application of drilling fluid in the integrated pipe string for well WZ11-1-A24H1
After completing the drilling of the 8-1/2"section of well WZ11-1-A24H1,the integrated pipe string of 3-1/2"pre-filled screen pipe+permanent open hole packer+5-1/2"liner was inserted,and the open hole packer was set directly for completion.The project has complex three-dimensional trajectories,high wellbore friction,high risk of sticking in the long open hole,the maximum friction was controlled within 40 klbs to prevent the packer from setting in advance,and it was difficult to successfully run the integrated pipe string.The characteristics of high requirements for wellbore cleaning,regular wellbore diameter and drilling fluid lubrication,the project team conducted thorough research on data,conducted a large number of formula experiments and comparisons,and optimized the drilling fluid scheme.The drilling fluid scheme has achieved the first successful application of integrated drilling and completion string in the western South China Sea,with good reservoir protection and significant cost reduction and efficiency improvement.
NETL
NSTL
万方数据
