加料顺序对钾胺基聚磺钻井液工艺性能的影响  

Effect of the Key Agents Adding Order on the Properties of Potassium-Amine Based Polysulfonate Drilling Fluid

作　　者：曹成[1] 王贵[1] 蒲晓林[1] 李双贵[2] 彭明旺[2] 李茜[3] 赵正国[1] 

机构地区：[1]油气藏地质及开发工程国家重点实验室(西南石油大学),四川成都610500 [2]中国石化西北油田分公司工程技术研究院,新疆乌鲁木齐830011 [3]中国石油西南油气田分公司采气工程研究院,四川广汉618300

出　　处：《油田化学》2015年第2期159-162,168,共5页Oilfield Chemistry

基　　金：国家重点基础研究发展计划(973计划)"中国南方海相页岩气高效开发的基础研究"(项目编号2013CB228003);四川省教育厅科研项目"钻井液对地层承压能力的影响规律及其作用机理研究"(项目编号14ZB0043)

摘　　要：研究了降失水剂、抑制剂及包被剂的加入顺序对钾胺基聚磺钻井液流变性、滤失造壁性及抑制性能的影响,得到钻井液处理剂加料的最佳顺序为:降失水剂、30%包被剂、抑制剂、70%包被剂。该配方的表观黏度(AV)为41 m Pa·s,API滤失量(FL(API))为3.7 m L,动塑比为0.31,页岩滚动回收率为93.48%,线性膨胀率为14.3%。利用激光散射粒度分析仪,分析了不同加料顺序影响钻井液性能的作用机理。结果表明:先加抑制剂钻井液体系的AV约为25 m Pa·s,FL(API)为6.4数7.0 m L,大颗粒含量较高,体系粒径过大,不利于形成致密滤饼,滤失造壁性能较差;先加包被剂钻井液体系的AV为36.0数39.5 m Pa·s,FL(API)为5.1数5.5 m L,较大与较小粒径颗粒均较少,滤失造壁性能较差;先加降失水剂钻井液体系的AV为32.5数42.5 m Pa·s,FL(API)为3.6数4.2 m L,粒径分布较宽,在几微米至一千余微米之间,且呈多峰分布,有利于黏土颗粒的有效堆积从而形成致密滤饼,滤失造壁性能与流变性能均较好。The effect of the key agents adding order about filtrate reducer,inhibitor and coating agent on the rheological property,filtration property and inhibition property of potassium-amine based polysulfonate drilling fluid was studied. The best adding order of drilling fluid agents for potassium-amine based polysulfonate drilling fluid was obtained as follows: filtrate reducer,30% coating agent, inhibitor and 70% coating agent. The apparent viscosity( AV) of the drilling fluid was 41 m Pa · s, the API filtration(FL(API))was 3.7 m L,the ratio of shear force and plastic viscosity was 0.31,the roll recovery was 93.48% and the linear expansion rate was 14.3%. Active mechanism of the affection was analyzed by using laser scattering particle size analyzer. The results showed that the drilling fluid adding inhibitor firstly displayed low AV(25 m Pa·s)and high FL(API)(6.4—7.0 m L),which was rich of large particle and not conducive to the formation of dense cake. So it showed a bad filtration property. The AV of the drilling fluid adding coating agent firstly was 36.0—39.5 m Pa·s,and the FL(API)was 5.1—5.5 m L. Both larger and smaller particle size was less in the particle size distribution,so the drilling fluid showed a bad filtration property. The AV of the drilling fluid adding filtrate reducer firstly was 32.5—42.5 m Pa·s,and the FL(API) was 3.6—4.2 m L. It had a wide particle size distribution,which was between a few microns to one thousand microns and presented a multi-peak distribution. The particle size distribution was beneficial to the accumulation of clay particles and would result in the formatin of a fine and close filter cake. The corresponding drilling fluid showed a good rheological property and filtration property.

关 键 词：钻井液 处理剂 加料顺序 流变性 滤失造壁性 抑制性 

分 类 号：TE254[石油与天然气工程—油气井工程]