压修井解决方案介绍.ppt

* Pipe Buckling- Inelastic/Elastic管柱弯曲-弹性形变/非弹性形变 * Engineering Calculations For HWO Applications带压作业不同应用的工程计算 * CUDD WELL HISTORY’S CHINA卡德在中国的作业业绩 CHANQING OIL长庆油田苏里格气田 Inner Mongolia October 2003内蒙古，中国，2003年 Removal of Russian Wellheads which must be completely removed in order to pull the production tubing. The wellhead removal was previously only possible by “killing” the well with a heavy work-over fluid. The operating budget for these wells is quite low; therefore any technical solution must also be inexpensive to the client. Our team designed a method to meet the criteria and successfully completed four wells. 换老式的俄式井口，为了提出生产管柱要求必须要完全去除井口。之前更换俄式井口的办法只有注入高密度的修井液压井，才能进行更换。这种作业费用非常低，因此要求作业的手段费用也不需要太高，卡德团队设计了一种作业方法，满足了甲方要求并成功的完成了作业。 As a result of this project, CUDD has a technical solution for changing the infamous “Russian Wellhead” without causing significant formation damage to sensitive gas formations; a real problem in other Chinese oilfields. 这个项目的结果就是，卡德在没有伤害长庆低渗敏感储层的情况下成功更换不出名的俄式井口的决方案非常成功，解决了中国油田面临的一些严重问题。 CNPC TARIM中石油，塔里木油田 WELL WC # 1 KUCHE, XINJIANG NORTHERN CHINA乌参1井，库车，新疆 High pressure paraffin removal with 13500psi circulating pressure and 8000psi SICP. Currently planning two more wells for 2013. 清蜡作业，13,500psi循环压力，关井压力8,000psi，2013年在准备再更多井的作业。 EOG RESOURCES EOG能源（中国） YAN TING, SICHUAN CENTRAL CHINA 盐亭，四川，中国 Recompleted 5 wells with 2-3/8” EUE tubing with 2000psi SICP.5口带压更换完井管柱作业，完井管柱为2 -3/8’’外加厚油管，2000psi关井压力 Conducted Snub / Frac with excellent result for customer. 成功完成带压作业辅助压裂，给客户带来极大效益。 Additional Snub / Fracs planned for August 2013 2013年8月即将进行下一次的带压作业辅助压裂作业。 * Downhole Tools for HWO带压作业井下工具串 Working against pressure requires special tools in the snubbing string. To enable making and breaking of pipe connections as the workstring is tripped into and out of a pressured well, fluid flow through the string must be prevented. This is accomplished with backpressure valves located near the end of the workstring. 带压作业需要特殊的工具串进行作业