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Case Studies of Expanding Cement To Improve Wellbore Sealing by wang xiangyu is a document available to read on EtoBox.
This document discusses the use of expanding cement to improve zonal isolation in wells. Expanding cement can help seal microannuli caused by cement shrinkage after setting. Two main mechanisms for cement expansion are discussed: creating gas bubbles via chemical reaction, and crystal growth within the set cement matrix. A field example from Sakhalin shows improved cement bonding over time after using expanding cement, as seen on ultrasonic cement evaluation logs run 9 and 43 days after cementing. Laborator
- Author
- wang xiangyu
- Language
- EN