Volume 37 Issue 3
Jun.  2020
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LIU Jingli, PENG Song, HE Wu, Zhang Ming, HUO Rujun, JI Weiqiang, YANG Yuhang, FU Yueying. A High Temperature Stabilizer for Set Cement[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(3): 367-370. doi: 10.3969/j.issn.1001-5620.2020.03.017
Citation: LIU Jingli, PENG Song, HE Wu, Zhang Ming, HUO Rujun, JI Weiqiang, YANG Yuhang, FU Yueying. A High Temperature Stabilizer for Set Cement[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(3): 367-370. doi: 10.3969/j.issn.1001-5620.2020.03.017

A High Temperature Stabilizer for Set Cement

doi: 10.3969/j.issn.1001-5620.2020.03.017
  • Received Date: 2020-01-15
  • Publish Date: 2020-06-28
  • A high temperature stabilizer has been developed for use in cement slurries to deal with decline of compressive strength of common set cement with sand at elevated temperatures. This stabilizer is well compatible with other additives in cement slurries and has no side effects on the thickening time and the development of the strength of the set cement at room temperatures. A set cement treated with this stabilizer had compressive strength that did not decline at elevated temperatures (320℃ and 450℃, respectively), showing better properties than set cement with sand and ultra-fine silica set cement. Cement slurries treated with this high temperature stabilizer had good cementation strength, which is 4 times of the cementation strength of cement sheath formed by cement slurries with sand, and 3.5 times of the cementation strength of the ultra-fine silica cement sheath. Operation of two wells with this high temperature stabilizer in Block Menggulin was successful and good well cementing job was performed, the cementation between the casing string and cement sheath as wells as the cementation between the cement sheath and the borehole wall were satisfactory, indicating that the high temperature stabilizer has good application prospect.

     

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