Petrochina Company Limited

Mingfang He

Zhe Li

Wei Gao

Lei Shen

Xianwen Li

Yong Ding

Yajuan Wang

Xu Ma

Xiaorui Liu

Yun Ling

Zhanguo Ma

Qianyun Zhao

Liang Ye

Changjing Zhou

Yanming Zhang

Yuanxiang Xiao

Xinxing Ma

Man Bi

Huaqiang Shi

Hua Shi

Baochun Chen

Hongying Li

Yonghong Gu

Ruifen Hao

Guohui Su

Xiaoyong Wen

Shaowei Zhou

Qiaorong Han

Yangming Hu

Xuan'ang Lai

Shusheng Li

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.

Method for lowering oil pipe in gas well without well-killing, soluble bridge plug and material preparation method thereof

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Beijing, China

Mingfang He