Lamadian Oilfield Research Articles

An Approach to Maintaining & Raising Fracturing Effect at High Water-cut Stage of Lamadian Oilfield

Abstract Since 1980, the oil production of Daqing oilfield has been at high water - cut stage. The rate of oil production has naturally decreased. Research was undertaken to maintain and enhance fracturing effects on oil production, including strengthening the preparation for fracturing and management after fracturing. Properly selecting the wells and zones for fracturing is important. Pre-treatment of injection wells and restoration of reservoir pressure can improve the results of fracture treatments in producing wells. Fracturing techniques were also developed for multiple thin intervals. This paper uses examples from the Lamadian Oilfield of Daqing.

Monitoring and Controlling of Oil and Gas Cross Flow During Production of Daqing Lamadian Laminated Oil Field with Gas-Cap

Abstract Daqing Lamadian oil field is the largest oil field with a gascap in China. Monitoring, controlling and adjusting techniques have been used extensively to minimize cross flow. An inverted nine-spot pattern was used in the oil-bearing area. Gas-bearing layers were not perforated and there was a 400 to 600m buffer zone of oil and gas migration left between oil-and gas-bearing areas. A monitoring system for gas-cap performance was established. Flow between the oilbearing and gas-bearing layers has been successfully controlled and a relatively stable oil-gas interface has been maintained for 20 years.