The gravity-type thrust water injection single-flow valve developed by Shengli Oil Production Plant's oil production four-mine engineering technical management station has recently obtained national patents.
Compared with the conventional spring-loaded single-flow valve, the gravity-type thrust water injection single-flow valve greatly reduces the vibration frequency and impact energy of the Versail ball during water injection, and extends the average life of 900 days. It can also prevent sand from injecting wells, slow down the damage of pipe water and stratum by pulse water injection, and further improve the quality of water injection. It is reported that the achievement has won the first prize of the 2005 national quality science and technology achievements and the first prize of the 2005 national petroleum industry quality science and technology achievements.
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