Mechanical Safety Analysis of gas lift completion string with the high pressure sandwich at production and shut state
For a block of oilfield geological conditions(high salt,high pressure sandwich)complex,the inner pressure is too low when no support within the fluid column after unloading by using conventional single-tube gas lift completions with positive lift oil production,and so the pressure between the annulus and external of casing becomes large,the casing may be damaged,a dual tube completion annulus filled with fluid for resisting pressure is used to overcome this problem in the adjacent surrounding blocks by gas lift production string with positive and reverse lift oil,but this technology is complex,poor system reliability,having large construction and maintenance difficulty.From anti-squeeze,tensile strength,internal pressure strength check of the casing string,the production and shut state”s safety of the concentric double tube gas lift positive lift completion string preferably determined under the conditions is verified,the results show that the set of gas lift completion string design is feasible,the new completion string not only reduces the implement construction,maintenance difficult of gas lift and also improves system reliability by contrasting completion string in the adjacent blocks.
high salt high pressure sandwich a dual tube completion system reliability strength check
Wei Luo WeilinQi Ming Yang
Yangtze University,Wuhan,Hubei 430100,China;Key Laboratory of Exploration Technologies for Oil and G Research and Development Center,Tuha Oilfield Company,Shanshan,Xinjiang,838202,China Research Institute of Exploration and Development,Tuha Oil Field Company,PetroChina,Hami,Xinjiang 83
国内会议
银川
英文
1-10
2016-05-31（万方平台首次上网日期，不代表论文的发表时间）