Mud Cake Removing to Improve the Well Cementing Quality

DOI

10.2991/icaemt-15.2015.69How to use a DOI?

Keywords

oil-based drilling fluid; mud cake; cementing strength; well cementation

Abstract

This In order to improve the oil well cementing interface strength, the removing agent (JCJ) and cleaning agent (QXJ) were used from the perspective of clearing the mud cake on the borehole wall and wellbore casing. The factors influencing the effect of JCJ and QXJ were researched through metal plate immersion test, cleaning test and cementing strength simulation experiments. The results showed that the removal rate of mud cake could reach to 88% when the metal plate was first soaked in the drilling fluid at 55 °C for 40 min when 1% (weight) of JCJ was added into the drilling fluid and then was cleaned in the aqueous solutions within 1% JCJ at 45 °C for 25 min. The cementing strength simulation experiments showed that the cementing strengths of the interfaces between the cement and the wellbore casing (the first interface), the cement and the borehole wall (the second interface) could be enhanced to 10.3 and 8 times respectively which indicated the well cementing quality could be improved effectively. Besides, the main properties of drilling fluid did not changed greatly after adding JCJ into the drilling fluid.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Jianwei Zhang
AU  - Jian Wang
AU  - Qingming Meng
AU  - Xin Li
AU  - Baodong Zhu
PY  - 2015/08
DA  - 2015/08
TI  - Mud Cake Removing to Improve the Well Cementing Quality
BT  - Proceedings of the 2015 International Conference on Advanced Engineering Materials and Technology
PB  - Atlantis Press
SP  - 345
EP  - 349
SN  - 2352-5401
UR  - https://doi.org/10.2991/icaemt-15.2015.69
DO  - 10.2991/icaemt-15.2015.69
ID  - Zhang2015/08
ER  -