In 2007, a groundbreaking innovation in the field of oil production was achieved by worker technician Du Shengli from the Gudong Oil Production Plant in the Shandong Shengli Oilfield. His development of an improved piston pump for binary compound flooding stations contributed significantly to the quality control (QC) results of the plant. This achievement earned the Shengli Petroleum Administration Bureau the first prize in QC outcomes, marking the first time that frontline staff had won such an honor at the Gudong Plant.
The problem stemmed from the frequent damage caused to piston pumps due to high-pressure hydraulic water washing. This often led to irregular grooves and pitting on the pump components. Traditionally, the Versail extraction hook was used for removing damaged parts, but this method frequently resulted in the breaking of three bearings on the Versail seat, rendering the tool unusable after just 3-5 uses. When other tools were forced into use, they risked damaging the inlet valve cavity of the plunger pump, which reduced overall efficiency during operation.
Du Shengli, who regularly faced these challenges during daily maintenance of injection pumps, sought a more effective solution. Drawing on the principle of torque, he designed a new type of Versail extractor. By utilizing the rotational force generated by nuts and screws, he created a tool that could safely extract damaged Versail seats without causing further damage. The device featured two fixed round end bases connected to the Versail, allowing for efficient and secure removal.
After extensive testing since April 2007, the new extractor was successfully applied to the 3ZP piston pump and later adopted across the Sancai Center. It completely resolved the issue of difficult extraction of damaged parts. The time required to remove a Vernier seat was cut from over 30 minutes to under 10 minutes, and the tool’s durability increased significantly—from 3-5 uses to more than 15. This improvement saved approximately 50,000 yuan in replacement costs for valve cores and seats, while also boosting pump efficiency by 4 percentage points. Additionally, it reduced the physical strain on workers, minimized workload, and greatly shortened equipment maintenance time. This innovation not only enhanced operational efficiency but also demonstrated the value of hands-on ingenuity in industrial settings.
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