Exploitation Mechanism And Blocking Technique For Bottom Water Reservoir In Dalujia Lin 2 Block

Linpan Dalujia Lin 2 block is a reservoir with a gas cap upper and a bottom aquifer underlying, Because of the recognition absence of the bottom water reservoir, and the incompatible of the developing patterns and the water coning control later, the water-flooding is becoming worse, so as the exploitation effect. So in order to improve the exploitation effect of the reservoir and enhance the final recovery ratio, the study both of the bottom water coning theory and the coning control measures has significant sense. Bing aimed at the problems above, the exploitation characters and the remaining oil allocation are analyzed and described, used the numerical reservoir simulation technology. With the theory studies of the water coning mechanism and the coning control measures, the affecting factors to the water coning, such as liquid producing capacity, shot depth, sandwich structure and so on, are studied, so as the relevant influence rules and the water coning shape movement, used both the theory methods and the reservoir accurate description technique. In this foundation, the water coning reduced by water production is studied, and the perforated zone is optimized, and the working system of the water producing is matched. And as the same time, used the lab simulation experiment, the properties of the frozen glue, such as the block capability, pressure breakthrough, movement in the layer and so on are evaluated. Synthesis above research, the compound processing technology of the coning reduced by water production and the frozen glue baffle plate is developed, and the radius/ location of the barrier, processing parameters are optimized. The research proved that, this technology can take the advantage both of the coning reduced by water production and the frozen glue baffle plate, and the function effect obvious will be good to only use the sole measure, and the technique will be able to improve this bottom water reservoir development effect, to obtain the higher economic efficiency.