TESTING STRING SAFETY ANALYSIS UNDER ENVIRONMENTAL PRESSURE

摘要：

During well testing, pressures imposed on testing tubing change frequently. Actions of downhole tools rely on annulus or in-tubing pressure operation; information collection of the reservoir needs the production control valve be on and off repeatedly. Pressure variability makes it very difficult to estimate testing string safety both in deformdtion and strength. Although many measures have been taken to forecast pressure and outcome information of the reservoir, exceptions often occur, and one exception is abnormal formation pressure. Considering technological process, axial deformation, helical buckling and strength of testing string are calculated with abnormal high and low formation pressure. Safety design methods of other engineering parameters are discussed, including working string structure, completion fluid density, padding fluid and downhole tool operation pressures.

关键词： testing string environmentd pressure string seafty andysis

作者: Baokui GAO Jinshan ZHANG Dingxiang GAO Peilei CAI

作者单位: Department of Petroleum Engineering,China University of Petroleum Beijing,Beijing 102249,China

会议类型: 国际会议

会议名称: The 3rd World Conference on Safety of Oil and Gas Industry(第三届世界石油天然气工业安全会议 WCOGI 2010)

会议地点: 北京

会议语种:英文

页码: 234-239

在线出版日期: 2010-09-27（万方平台首次上网日期，不代表论文的发表时间）