处理剂对聚磺钻井液胶体稳定性影响

Effect of Treating Chemical on Colloid Stability of Drilling Polysulfonate Fluid System

卢俊锋 苏俊霖 王 亮 于海涛 黄进军

LU Junfeng SU Junlin WANG Liang YU Haitao HUANG Jinjun

为实现废弃聚磺钻井液的高效处理， 以配方 3%膨润土+3%SMP-2 （抗高温降滤失剂） +3%SMC （抗高温降滤失剂） +3%SPNH（降滤失剂） +0.3%FA-367（包被剂） +0.2%XY-27（降黏剂） +3%磺化沥青（抑制剂）的聚磺钻井液为基础， 通过采用近红外扫描分散稳定性分析仪测试聚磺钻井液体系的分散稳定性、 用稳定性动力学指数TSI值定量表征钻井液的胶体稳定性， 研究了各类处理剂对聚磺钻井液胶体稳定性的影响。通过测定钻井液体系表观黏度与 Zeta电位， 分析了各类处理剂对钻井液胶体稳定性的影响机制。结果表明： 各类处理剂均会影响聚磺钻井液体系的胶体稳定性； 未加抑制剂的钻井液对应的TSI增加了 88.5%， 表观黏度降低了 74%， Zeta电位绝对值降低了 9.2%； 未加两性离子类包被剂和降黏剂的钻井液对应的TSI减少了 46.2%， 表观黏度降低了 51.9%， Zeta电位绝对值增加了 16.1%； 未加抗高温降滤失剂 SMP-2和 SMC的钻井液对应的 TSI减少了 42.3%， 表观黏度增加了10.4%， Zeta电位绝对值减少了 33.3%； 未加降滤失剂 SPNH的钻井液对应的 TSI减少了 19.2%， 表观黏度减少了23.4%， Zeta电位绝对值减少了 8%。磺化沥青类抑制剂主要通过改变表观黏度影响钻井液体系的胶体稳定性，包被剂、 降黏剂、 以及稀释剂主要通过改变 Zeta电位影响体系的胶体稳定性， 降滤失剂则通过同时改变黏度和Zeta电位影响钻井液体系的胶体稳定性。图 5表 1参 15

In order to treat waste polysulfonated drilling fluid efficiently，on the basis of polysulfonated drilling fluid，composed of 3% bentonite + 3% SMP-2（high temperature resistance filtrate loss reducer）+ 3% SMC（high temperature resistance filtrate loss reducer ）+3% SPNH（filtrate loss reducer）+0.3%FA-367（coating agent）+0.2%XY-27（viscosity reducer）+3% sulfonated asphalt （inhibitor），the dispersion stability of polysulfonated drilling fluid system was measured by near infrared scanning dispersive stability analyzer，and the colloid stability of drilling fluid was quantitatively characterized by the value of turbiscan stability index（TSI） to study the effect of various treatment agents on the colloid stability of poly sulfonated drilling fluid. In addition，through the determination of apparent viscosity and Zeta potential of drilling fluid system， the influence mechanism of various treatment agents on the colloid stability of poly sulfonated drilling fluid was analyzed. The results showed that，the various treatment agents affected the stability of polysulfonated drilling fluid system. Compared to that of the complete system，the TSI of the system without inhibitor increased by 88.5%，the viscosity decreased by 74% and the absolute value of Zeta potential decreased by 9.2%；the TSI of system without amphoteric ion class coating agent and viscosity reducer decreased by 46.2%，viscosity decreased by 51.9% and the absolute value of Zeta potential increased by 16.1%；the TSI of system without high temperature resistance filtrate loss reducer SMP-2 and SMC decreased by 42.3%，viscosity increased by 10.4% and the absolute value of Zeta potential decreased by 33.3%； the TSI of system without filtrate loss reducer SPNH decreased by 19.2%，the viscosity decreased by 23.4% and the absolute value of Zeta potential decreased by 8%. It could be concluded that the sulfonated asphalt inhibitor affected the colloid stability of drilling fluid system by mainly changing viscosity，while the coating agent，viscosity reducer and diluent had an effect on the colloid stability of drilling fluid system mainly by changing Zeta potential，while the filtrate loss reducer affected the colloid stability by changing both viscosity and Zeta potential.

10.19346./j.cnki.1000-4092.2017.04.001