Properties and Application of Oil-well Cement Enhanced with a Novel Composite Toughening Agent  

作　　者：Hua Sudong Yao Xiao 

机构地区：[1]College of Materials Science and Engineering, Nanjing University of Technology, Nanjing, Jiangsu 210009, China

出　　处：《Petroleum Science》2007年第2期52-59,共8页石油科学（英文版）

摘　　要：Brittle fracture of cement sheath, induced by perforation and stimulation treatments, can cause cross flow of formation fluid and increase casing damage. A novel agent XL was developed for solving the problem. Experimental results showed that the toughness of the set cement containing XL was improved remarkably. The engineering properties of the slurry containing XL, drag reducer USZ （0.2% BWOC）, filtrate loss additive F 17B （1.2% BWOC） and crystalloid expanding agent F17A （3% BWOC） could meet technical requirements of cementing operation. After perforation, good quality cement sheath enhanced with XL was observed by CBL/VDL logs in a deep well.Brittle fracture of cement sheath, induced by perforation and stimulation treatments, can cause cross flow of formation fluid and increase casing damage. A novel agent XL was developed for solving the problem. Experimental results showed that the toughness of the set cement containing XL was improved remarkably. The engineering properties of the slurry containing XL, drag reducer USZ （0.2% BWOC）, filtrate loss additive F 17B （1.2% BWOC） and crystalloid expanding agent F17A （3% BWOC） could meet technical requirements of cementing operation. After perforation, good quality cement sheath enhanced with XL was observed by CBL/VDL logs in a deep well.

关 键 词：Oil-well cement CEMENTING cement sheath set cement fiber 

分 类 号：TE256.6[石油与天然气工程—油气井工程]