
448
石油与天然气化工
CHEMICAL ENGINEERING OF OIL & GAS
2014
浅谈碘量法测定钻并液中HS含量在现场的应用
陈华兵’李洪兴万伟”千建华’叶长文曹望春”(1.川庆钻探公司川西钻探公司2.川庆钻探公司钻井液技术服务公司)
摘要针对以酸性气田为主的四川地区,研究如何在该地区钻井过程中准确测定钻并液中的H2S含量,通过何种技术手段去除钻井液中的H2S,以防止其对钻井作业的影响已逐渐成为四川气田勘探开发的一个重要课题。简述了钻井液中H2S来源、存在状态及其危害,详细介绍了碘量法测H2S的方法步骤,并对该方法中试液加入量的影响进行了研究。同时,将其实际运用于四川地区的多口并中,总结出现场碘量法测H2S的注意事项,对碘量法测定现场钻井液中的H2S具有十分重要的意义。
关键词碘量法H2S四川现场应用
中图分类号:TE99
D0I:10.3969/i.issn.1007-3426.2014.04.022
文献标志码:A1
Field application of testing H2S in drilling fluid by iodometric method Chen Huabing,Li Hongxing,Wan Wei’,Gan Jianhua',Ye Changwen',Cao Wangchun
(1.Chuanxi Drilling Company of CCDE,Chengdu 510500,Sichuan,China 2.DrillingFluidCompanyof CCDE,Chengdu510500,Sichuan,China)
Abstract: According to the acid gas field of Sichuan area , an important project of Sichuan gas field exploration and development is that how to determine hydrogen sulfide content accurately in the drilling fluids during the drilling process in the region , and by which means to remove hydro. gen sulfide from drlling fluids so as to prevent its effect on the drilling operation . This paper de-scribes the source,existing state and harms of hydrogen sulfide in drilling fluids , introduces a method of measuring hydrogen sulfide by iodometric method , and studies the influence of the adding amount of test solution . At the same time, this method has been used in several wells in Sichuan area, and the attentions of testing hydrogen sulfide by iodometric method have been summed up, which has very important meanings for the determination of hydrogen sulfide in drilling fluid.
Key words : iodometric method, hydrogen sulfide , Sichuan, field application
目前,在我国的天然气资源中,大部分含有
H2S,四川地区就是一个典型的H2S含量较高的地区。该地区至今所形成的年产能力中,80%系酸性天然气,多数气层所产出的天然气中H:S体积分数达1%~13%,最高可达35.11%。随着我国对能源
特别是天然气这种绿色能源需求的日益增长,以及含H2S气田、高含H2S气田的安全勘探和安全开发逐渐被重视,特别针对以酸性气田为主的四川地区,研究如何在该地区钻井过程中准确测定钻井液中的H2S含量,通过何种技术手段去除钻井液中的
作者简介:陈华兵(1973一),工程师,2008年成人大专毕业于重庆科技学院钻井工程专业,长期从事现场钻井液技术及管理工作。地址:(610051)四川省成都市成华区三友路213号。电话:028-86013713。E-mail:chb40646@163.com