A Polymer-based Drilling Fluid with High Temperature, Salt and Calcium Resistance Property

IOP Conference Series

article

Zhiwen Dai¹  Jinsheng Sun¹  Yan Wang¹ 

[1] Department of Petroleum Engineering, China University of Petroleum

DOI  :  10.1088/1755-1315/237/5/052058

学科分类：材料科学（综合）

来源: Institute Of Physics Publishing

【 摘 要 】

Filtrate reducer is facing higher requirements and challenges in temperature and salt resistance. A novel polymer filtrate reducer was synthesized by free radical polymerization in aqueous solution. By filtration experiments, the results show that the polymer has good filtration loss performance under high temperature and saturated salt. Through the optimization with filtrate reducer and inhibitor, the optimum components of drilling fluids are water, 4.0wt% bentonite, 0.3wt% Na 2 CO 3 , 2.0wt% DAADS, 3.0wt% SMP-II, 3.0wt% SPNH, 3.0wt% SMC, 1.0wt% SDJA and 2.0wt% RH-3. The drilling fluid system has temperature resistance up to 220°C, salt resistance to saturation and calcium resistance up to 1.0%. The API fluid loss of the drilling fluids with the addition of saturated NaCl and 1wt% CaCl 2 respectively after aging at 220°C was 6.0 mL and 4.4 mL.

【 授权许可】

CC BY