Demonstration Zone of 'Water Control and Efficiency Improvement' in Area 1 of Laxi Block Study on fine liquid splitting method

Lamadian Oilfield has entered the late stage of ultra-high water cut development, and the producing conditions of each sublayer are different. In order to know the producing conditions of each sublayer more clearly, it is necessary to count the reserves and output conditions of each sublayer. Therefore, it is necessary to finely divide the liquid and oil production of each sublayer of the production well. The former liquid splitting method only considered the formation influencing factors, that is, the splitting method of formation coefficient, which could not meet the differences of different water cut in each sublayer at present. Through the research of fine liquid splitting method, we can clearly understand the production of each oil well layer in the block, the production status and adjustment potential of each sub-layer, thus guiding the adjustment and tapping potential of block layering measures. It provides a theoretical basis for the later development of ultra-high water cut block.