第33卷第6期 2016年11月
钻井液与完
井液
DRILLING FLUID & COMPLETION FLUID
doi: 10.3696/j.issn.1001-5620.2016.06.012
种新型低密度矿渣固井液
刘璐，李明，郭小阳
（西南石油大学油气藏地质及开发工程国家重点实验室，成都610500）
Vol.33 No.6 Nov.2016
刘要等，一种新型低雷度矿造周并兼[]钻井来与完井液，2016，33（6)：68-72
摘要针对激殊、空心我璃微球等减轻剂价格币费、使用量大、其荣体与结并波相客性校差等同愿，售鉴结液转化为水无象（MTC）技术，直按以矿资作为胶额付料等代油并求无配制固并微，并研究了配套的激活剂和缓凝剂。通过大量的空内实验，初步势选出一种或金属氢氧化物JHQ和一种金属硅酸续JGY作为激活剂，并最终确定隐们的移量分剧为 3%和2%，此时围化体3d的抗压露度可达到12.5MPa；体系采用的漫凝剂HNJ主要事令于中a和β俊轻基发象基图能与Ca产有很强的整合作用，形成高度稳定的五光环或文元环，部分极附于矿资翼粒上，图止本化产物性能，以达到延长工作液测化时间的目的，象体测化时间与缓覆剂HNJ移量儿孕量线性增长施专：体系选用其有提高象体稳定性和控制失水能
力的影润土要悬浮剂GYW-201，并配合使用是浮稳定作用逐的高象物是净
为 50~90 %,
密度在1.30%1.50g/cm
a国常：
表东能
联量
矿流固并液适用温度
结果表明，
性及费
与钻井兼相容性好、别化时
周并质量良好。因此该矿造固并凌可替代
同级性可调、低湿下强度发展遇速等优点。
体系已应用于江苏油围观场作业，
低密度水泥蒙，用于低压持井、长封围授、次平衡等围井施工，降低固井成本。
矿查；固并液：低密度：低压易漏地是；长封围段
关键词
文章编号：1001-5620（2016)06-0068-05
中图分类号：TE256.6
文献标识码：A
ANewLowDensitySlagCementingSlurry
LIU Lu, LI Ming, GUO Xiaoyang
(StateKeyLaboratory ofOilandGasReservoir Geology and Exploitation,Southwest Petroleum University,Chengdu,
Sichuan 610500)
Abstract Floating beads and hollow glass beads are commonly used lightweight additives in cement slurries. These lightweight additives are expensive, and generally large amount of them are needed in formulating cement slurries of required density. Cement slurries treated withfloating beads and hollow glass beads have poor compatibility with drilling fluids. A clue borrowed from MTC technology can be used to solve these problems, that is, using slag as a gelling material to replace oil well cement in formulating cementing slurries. Activators and retarders as assorted agents in this new technology have been studied. An alkaline metal hydroxide JHQ and an alkaline metal salt of silicate JGY were preliminarily screened out as the activators through large amount of laboratory experiments, and the concentration of the activators were determined to be 3% and 2%, respectively. At these concentrations of activators, the set cementing slurry had compressive strength of 12.5 MPa. The retarder selected, HNJ, has hydroxycarboxylic acid groups on the a and β carbon atoms that have strong chelating capacity to calcium ions, The result of the chelating was the formation ofhighly stable pentacyclic or hexacyelic structures. HNJ was adsorbed on the surface of slag particles to retard the hydration process and prolong the thickening time, The thickening time was almost in a positive linear relationship with the concentration of HNJ. A bentonitic suspending agent, GYW-201, was selected to enhance the stability of the cementing slurry and to control filter loss. GYW-301, a high polymer suspending agent, was used in combination with GYW-201. The slag cementing slurry is suitable for use at 50-90 C, and has density adjustable between 1.30 g/cm’ and 1.50 g/cm°. Low cost, low filter loss, good sedimentation stability, good compatibility with drlling fluids, linearly adjustable thickening time, fast-developing low temperature strength were the advantages
）深并优质工作液与固井完井技术研究”（2016ZX05020004-008）。
第一作者简介：刘瑞，1991年生，硕士研究生，2014年毕业于西南石油大学材料科学与工程专业，现从事因井材料
及技术研究工作。电话18782973703；E-mail：519626160@qq.com/guoxiaoyangswpiqq.com/swpulm@126.com。万方数据