钻井液与完井液2017，Vol.34Issue(1)：33-38,6.DOI:10.3696/j.issn.1001-5620.2017.01.006
梳型聚合物降滤失剂的合成及其在深井盐水钻井液中的应用
Synthesis and Application of a Comb Polymer Filter Loss Reducer in Deep Well Saltwater Drilling Fluid
摘要
Abstract
A comb polymer filter loss reducer,DMP-1,was synthesized through solution polymerization with allyl polyoxyethylene ether 400 (APEG400),acrylamide (AM),and 2-acrylamido-2-methyl propane sulfonic acid (AMPS).DMP-1 was developed in an effort to overcome the deficiencies of presently available high temperature salt-resistant filter loss reducers used in an environment with high salinity and divalent salts.The synthesized product was a viscous transparent liquid containing 30％DMP-1.Structure characterization of DMP-1 showed that APEG400,AMPS and AM all participated in the reaction to form the comb polymer and the polymerization was complete.Thermogravimetric analysis showed that DMP-1 decomposed at 320 ℃.Comparison of DMP-1 with the commonly used filter loss reducers such as DSP-2,Driscal D or PAMS601 showed that,after aging at 180 ℃,the percent reduction of the viscosity of DMP-1 was less than 42.0％,and the property of DMP-1 remained stable at 200 ℃.DMP-1 was resistant to salt contamination to saturation,and calcium contamination to 3％.These data indicate that DMP-1 works better in salt and calcium environment than the widely used high temperature salt-resistant filter loss reducers such as DSP-2.Application of DMP-1 in the 3rd interval (penetrating salt and gypsum formations) and the 4th interval (high temperature) of the well Tailai-201 and the well Yongxing-1 in Fuling area demonstrated that DMP-1 performed very well at high temperatures,high salinities and high calcium concentrations,effectively reducing the API filter loss of saltwater drilling fluids and calcium-treated drilling fluids,thereby ensuring the safety of drilling operation.关键词
梳型聚合物降滤失剂/抗盐/抗钙/深井盐水钻井液Key words
Comb polymer filter loss reducer/Salt-resistant/Calcium-resistant/Deep well saltwater drilling fluid分类
能源科技引用本文复制引用
徐运波,蓝强,张斌,陈健,孙德军..梳型聚合物降滤失剂的合成及其在深井盐水钻井液中的应用[J].钻井液与完井液,2017,34(1):33-38,6.基金项目
国家重大专项课题“低渗油气藏钻井液完井液及储层保护技术”(2016ZX05021-004)、“致密油气开发环境保护技术集成及关键装备”(2016ZX05040-005)及中石化胜利石油工程有限公司重点项目“钻井液用梳型聚合物降滤失剂研制”(SKZ1302)部分研究内容. （2016ZX05021-004）
