STUDY AND APPLICATION OF SAND CONTROL AND WATER SHUTOFF SYSTEM TECHNOLOGY IN GUDONG OILFIELD

Being the double contradiction (sand production and water shutoff) of the formation, the workload and difficulty about sand control and water shutoff is becoming heave after the loose sand reservoir coming into the later development stage. A new system technology about sand control and water shutoff was put forward. Two prescriptions of sand control and water shutoff system technology were confirmed which named FD-1 and FD-2, and lab testing of their performance was evaluated. The affection to the two agents with every formation factors was reviewed. The method and the order of field construction and the formula of the sand control and water shutoff agent were confirmed. After 20 wells testing, the efficiency of sand control is 91.7 %, the efficiency of water shutoff is 76%, and the production of oil increase 12,154t.