Abstract
HaiTa district’s underground condition is complex, fault develops, and stuck and collapse are easy to occur in the drilling duration.Formation dip is large, hole deviation is easy to take place in the drilling duration, many straightening cause worse wellbore quality and long wellbore like “big belly” and “sugarcoated haws on a stick”, hole diameter are irregular, wellbore quality are not easily guaranteed, bringing difficulty to ensure the quality of cementing engineering. For the difficulty of well cementation in this district, cement slurry in HaiTa district is ensured. This cement slurry performance is evaluated by experiment.
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