带压大修技术(英文版).ppt

技术服务项目名称 稠油蒸汽注入技术 技术服务项目名称 带压大修 技术服务项目名称 一级标题名称 技术服务项目名称 稠油蒸汽注入技术 中国石油长城钻探工程有限公司 带压大修 Workover by Snubbing Technology Ⅰ Application and solution Ⅱ Specification and superiority Ⅲ Ability of Service Ⅳ Performance of Service Workover by Snubbing Tech Ⅰ Application and solution A. Wells to be repaired are too deep and strings are too heavy to lift by light snubbing unit. B. Workover by snubbing can solve problems of sectorially plugging different inner diameter string. C. Adopt hydraulic top driver to solve problem of providing high rotating torque under balance and BHA inner plug D. Implement fishing, milling,casing plastic,wax removal under pressure. Ⅱ Specification and superiority GWDC designed hydraulic workover top driver in 2013 and assembled snubbing unit with workover rig,we call it workover snubbing unit. We use it to solve problems of jiont backoff and milling under balance. It effectively reduce POOH and RIH time and material consumption. A Technical specification Ⅱ Specification and superiority For professional workover performance, we use top hydraulic driver and stripper to control pressre,and we have designed series down hole tools to control down hole pressure. Picture on left are classical workover snubbing unit, top hydraulic driver,and hydra-source for top driver. B Technical specification Ⅱ Specification and superiority a. Workover rig and snubbing unit haved be assembed together, so it doesnt need to fix snubbing unit seperately. All operating basket is instead by rig floor. b. Rig floor is high to 5.5 meter, and derrick is up to 27meter to meet all requirement to hoist standpipe. c. We had equiped 110T multitronic top hydraulic driver that torque is up to 20000N.M without reaction torque. d. Its easy to rig up and seperate rig with snubbing unit. And its easy to change workover mode to snubbing mode. B Technical specification 技术服务项目名称 稠油蒸汽注入技术 技术服务项目名称 带压大修