Breakthrough pressure method was presented in order to accurately determine the plugging position of water shutoff agent in oil reservoir.
为了能更准确地预测堵剂在油藏中的封堵位置，提出了堵剂突破压力法。
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Method To eliminate steam coning and water coning in production Wells of heavy oil reservoirs, Shengli oil province, HBC98 1 plugging agent for thermal production is developed.
Sulfur compounds in Russian atmospheric gas oil were separated into thiophene and thioether compounds by the oxidation-reduction method using selective oxidant and reducing agent.