低温条件下提高连续混配施工稳定性研究  

Study on improving the stability of continuous mixing construction under low temperature condition

作　　者：谢新秋[1,2] 文果[1,2] 马新东[3] XIE Xinqiu;WEN Guo;MA Xindong(Drilling&Production Engineering Technology Research Institute,Chuanqing DrillingEngineering Co.,Ltd.,CNPC,Xi'an Shanxi 710018,China;National Engineering Laboratoryfor Exploration and Development of Low-Permeability Oil & Gas Fields,Xi'an Shanxi710018,China;Chuanqing Drilling and Exploration Engineering Company,Xi'an Shanxi 710018,China)

机构地区：[1]川庆钻探工程有限公司工程技术研究院,陕西西安710018 [2]低渗透油气田勘探开发国家工程实验室,陕西西安710018 [3]川庆钻探工程有限公司长庆井下技术作业公司,陕西西安710018

出　　处：《石油化工应用》2019年第1期59-61,80,共4页Petrochemical Industry Application

摘　　要：长庆油田水平井施工方式以连续混配为主,但是在冬季低温情况下,胍胶溶胀差,基液黏度低,交联液携砂能力差,达不到施工要求。室内研究表明,通过调整配液p H值、添加剂添加顺序、延长胍胶溶胀时间等方法,配制携砂液交联性能好。现场施工过程中,提前把胍胶基液用水pH值调整到合理值;增加缓冲罐,提前配制胍胶基液,延长溶胀时间;调整添加剂添加顺序等方式,现场施工表明交联液携砂能力好,满足施工要求。Horizontal wells in Changqing oilfield are mainly constructed by continuous mixing. However, under low temperature conditions in winter, guar gum swelling is poor, base fluid viscosity is low, and cross-linking fluid sand carrying capacity is poor, which can not meet the construction requirements.Laboratory study showed that the crosslinking performance of sand carrying liquid was good by adjusting pH value of the mixture,adding sequence of additives and prolonging swelling time of guanidine gum. In the process of site construction, the pH value of water used for guanidine glue-based liquid is adjusted to a reasonable value in advance,the buffer tank is added, the guanidine glue-based liquid is prepared in advance, the swelling time is prolonged, and the order of adding additives is adjusted. The site construction shows that the cross-linking liquid has good sand-carrying capacity and meets the construction requirements.

关 键 词：交联液 PH值 添加顺序 溶胀时间 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]