Volume 39 Issue 2
Jun.  2022
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HE Yuting, ZHAO Shuxun, GAO Qixuan, et al.Influence of mosaic shielding drilling fluid filter cake on the cementing quality of second interface and improvement method[J]. Drilling Fluid & Completion Fluid,2022, 39(2):227-233 doi: 10.12358/j.issn.1001-5620.2022.02.016
Citation: HE Yuting, ZHAO Shuxun, GAO Qixuan, et al.Influence of mosaic shielding drilling fluid filter cake on the cementing quality of second interface and improvement method[J]. Drilling Fluid & Completion Fluid,2022, 39(2):227-233 doi: 10.12358/j.issn.1001-5620.2022.02.016

Influence of Mosaic Shielding Drilling Fluid Filter Cake on the Cementing Quality of Second Interface and Improvement Method

doi: 10.12358/j.issn.1001-5620.2022.02.016
  • Received Date: 2021-10-25
  • Accepted Date: 2021-12-25
  • Rev Recd Date: 2021-12-12
  • Publish Date: 2022-06-23
  • The quality of cementing is the key to decide whether the later mining operation can proceed smoothly. The filter cake formed during drilling will affect the cementing quality of the second interface. Therefore, this paper analyzes the influence of embedded shielding drilling fluid filter cake on the cementing quality of the second interface through the evaluation method of the cementing strength of the second interface. Combined with SEM and EDS, it further shows that the virtual filter cake formed by drilling fluid will reduce the cementing quality of the second interface because of its loose gel state. Aiming at the above problems, this paper selects AEO, T60 and OP as penetrant to flush the filter cake of embedded shielding drilling fluid. The experimental results show that AEO has the best flushing effect on the filter cake of embedded shielding drilling fluid. After the filter cake is flushed by AEO, the cementing strength of the second interface of cementing is increased by 33.34%~166.67%, which greatly improves the cementing quality of the second interface of cementing.

     

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