Weaver Austin Villeneuve & Sampson LLP
Method for lowering oil pipe in gas well without well-killing, soluble bridge plug and material preparation method thereof
The present invention discloses a method for lowering an oil pipe in a gas well without well-killing, a soluble bridge plug and a material preparation method thereof, wherein, the method comprises the steps of: lowering a bridge plug in a wellbore such that the bridge plug blocks the wellbore at a predetermined location in the wellbore; injecting water in the wellbore after the pressure in the wellbore has been relieved so as to replace gases in the wellbore; and lowering an oil pipe in the wellbore to the location of the bridge plug. The method for lowering an oil pipe in a gas well without well-killing, the soluble bridge plug and the material preparation method thereof provided in the present invention successfully solve the problem of high cost for lowering an oil pipe under pressure after a fracturing fluid has been injected into the casing.
PetroChina Company Ltd.
C E E C E C E C E
C22C E21B E21B C22C E21B C22C E21B C22C E21B
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Xuan'ang Ruifen Yuanxiang Qianyun Baochun Yonghong Yong Yangming Yanming Shaowei Yajuan Hua Qiaorong Lei Hongying Huaqiang Shusheng Zhe Changjing Wei Guohui Man Xu Mingfang Xiaoyong Xiaorui Xianwen Xinxing Yun Liang Zhanguo
Lai Hao Xiao Zhao Chen Gu Ding Hu Zhang Zhou Wang Shi Han Shen Li Shi Li Li Zhou Gao Su Bi Ma He Wen Liu Li Ma Ling Ye Ma