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Puyang, China

Bian J.,Fourth Drilling Company | An J.,Fourth Drilling Company | Geng J.,Fourth Drilling Company | Cheng S.,Fourth Drilling Company | Zhang X.,Fourth Drilling Company
Drilling Fluid and Completion Fluid | Year: 2011

The well CT-32 is a regional evaluation well located at Truva oil field in Kazakhstan with the depth of 3,300 m. There are 8 thief zones from 1,075.87 m to 1,177.46 m, and the total loss is 879 m 3, which costs the time of 45.625 days. A technology of combined plugging and cementing is applied to overcome the difficulty of lost circulation in limestone formation by using mud balls and bicks, and a method of mud loss control is developed which is aiming at the lost circulation in fractured limestone formation.

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