Research of downhole data communication for simultaneous production of separate layer oil wells

The geological structure of Dagang Oilfield is complex. Most of the oil wells in the block have long production intervals, many production intervals, high reservoir variation coefficient and serious interlayer interference, which affect the oil production. Separate production and mixed production is an effective lifting method to solve this problem. However, due to the geological conditions of the complex fault block reservoir in Dagang Oilfield, the influence of each layer of stratified water injection well on each layer of production oil well is still unclear. In order to determine the influence of each layer of water injection well on each layer of production oil well, find out the oil-water movement law between water injection well and each layer of oil well, the timely testing technology of slicing and simultaneous production is studied, The wireless transmission mode of intermittent power supply and downhole storage is adopted to meet the requirements of timely measurement of stratification pressure by the fixed string of 3800m and 120°C, so as to make clear the production performance of oil wells in separate layers, master the oil-water movement law of formation, and effectively guide the layered production and development of oilfield.