第34卷第4期 2017年7月
钻井液与完井液
DRILLINGFLUID&COMPLETIONFLUID
doi: 10.3969/j.issn.1001-5620.2017.04.015
深水固井液体减轻低密度水泥浆体系
冯颖韬，宋茂林，张浩，李厚铭（中海油田服务股份有限公司油田化学研究院，河北燕驾065201）
冯颖额帮，
宋茂林，
张浩
FENG Yingtao, SONG
Maolr
sluyujDriing
摘要
我对
南景其有用无案器
关键词
中图分类号
文献标识码
Vol.34 No. 4 July2017
体减轻低密度水泥体系[3].钻井液与完并液，2017，34（4）：80-84
I cementing fluid reduced lightened deep water light-weight cement 80-84
对固并作业提出了新的要求并液体减轻低密度水泥票
问调节水泥蔡密度
博舒新
；具有促凝
求灰比降低才
职理指大有
型式
减小了现场
夜体减轻水耗票体系作业成本
1001-5620（2017）04-0080-05
章编号：
Liquid Cementing Fluid Reduced Lightened Deep Water Light-weight Cement Slurry
FENG Yingtao, SONG Maolin, ZHANG Hao, LI Houming
(Oilfield Chemistry R&D Institute, COSL, Yanjiao, Sanhe, Hebei 065201)
Abstract Contrary to the surface hole cementing operation, deep water surface hole cementing imposes new requirements on well cementing operation because of the deep water environment and the operation condition. A new liquid light weight agent PC-P81L has been developed for use in cementing the surface hole in deep water drilling, and a cementing fluid was formulated with PC-P81L Laboratory experimental results showed that PC-P81L can be used to adjust the density of cement slurry between 1.30 g/cm’ and 1.70 g/cm*. PC-P81L has strong suspending capacity; it can suspend cement slurries with water/cement ratio of 2. PC-P81L is not only a light weight agent, it is also a strength enhancer in cement slurries with conventional densities. PC-P81L can accelerate the setting of cement slurry in deep water low temperature environment. By increasing the water/cement ratio, the density of the deep water low density cement slurry can be reduced, and the yield of the cement slurry increased, thereby reducing the consumption of cement in field application. The formulation of the cement slurry is simple and the properties of the cement slurry are easy to adjust. The additives used are added in liquid fom, thereby lightening the field labor intensity. The use of the cement slurry has satisfied the needs for deep water low temperature operation, providing insurance for drilling the deeper formation. Compared with hollow microsphere, the operation cost of the light weight cement slurry is quite lower.
Key words Deep water; Surface casing cementing; Low density cement slurry; Liquid light weight agent
随着中国南海水域油气资源勘探的深入，深水油气资源的开发已经进入攻坚阶段，而由于深水环境和浅部地层复杂情况的影响，深水固井难度也越
来越大。深水固井有别于浅水固井和陆地固井作业尤其在表层固井技术上有着显著区别，主要表现在[1-】：①压力窗口较窄，通常需配合使用低密度
第一作者简介：冯额帮，工程师，硕士，1986年生，毕业于西南石油大学石油与天然气工程，现在从事固井技术研究工作。
电话 15075694569 ; E-mail : fengyt@cosl.com.cn。万方数据