This paper describes the main principles of the non-contamination pumping pipe string, that is, use the perforated slip packer and the check valve to separate the cleanout liquid from the formation at certain location...This paper describes the main principles of the non-contamination pumping pipe string, that is, use the perforated slip packer and the check valve to separate the cleanout liquid from the formation at certain location at the lower part of the pump, so as to prevent the well cleanout liquid from killing the well and contaminating the oil reservoir.展开更多
The main failure modes of tubing and casing in current service conditions are represented in this study.The progress of the tubing and casing application technology and the problems that should be focused on during ap...The main failure modes of tubing and casing in current service conditions are represented in this study.The progress of the tubing and casing application technology and the problems that should be focused on during application are introduced,with special attention paid to the reliability of the pipe string design and the connection sealing properties.The necessary work that should be undertaken in future research is also summarized.展开更多
文摘This paper describes the main principles of the non-contamination pumping pipe string, that is, use the perforated slip packer and the check valve to separate the cleanout liquid from the formation at certain location at the lower part of the pump, so as to prevent the well cleanout liquid from killing the well and contaminating the oil reservoir.
文摘The main failure modes of tubing and casing in current service conditions are represented in this study.The progress of the tubing and casing application technology and the problems that should be focused on during application are introduced,with special attention paid to the reliability of the pipe string design and the connection sealing properties.The necessary work that should be undertaken in future research is also summarized.