Table of Contents
Journal of Petroleum Engineering
Volume 2014 (2014), Article ID 824020, 5 pages
http://dx.doi.org/10.1155/2014/824020
Research Article

Study and Application of Polymer Film-Forming Shielding Plugging Drilling Fluid System

Northeast Petroleum University, Daqing, Heilongjiang 163318, China

Received 11 October 2013; Revised 3 January 2014; Accepted 3 January 2014; Published 13 February 2014

Academic Editor: Alireza Bahadori

Copyright © 2014 Yuxue Sun et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

To solve the low cementing quality of acoustic logging and some distensible well diameters in high permeable layer of Daqing Lamadian oilfield, we have carried out the study and field application of polymer film-forming shielding plugging drilling fluid system. By adding this polymer film-forming shielding plugging agent to macromolecule emulsion drilling fluid, the shielding and plugging effect will be improved. Combined with the experiment and analysis, we optimize the adding amount of this agent to improve the performance of drilling fluid system. From the application effect, the cementing quality of acoustic logging has been improved obviously. This system has been applied in 20 wells and there are 15 high quality wells. The merit factor of well cementing reaches 75%.