A new method of measuring starting pressure for low permeability reservoir;

Deep pumping by sucker rod in low permeability reservoir;

Using imbibition method to improve recovery efficiency of low permeability reservoir

Research on the adaptability of natural gas drive for low-permeability reservoir

The productivity equations in steady fluid flow and oil-gas two-phase flow with solution gas drive of horizontal wells in low-permeability reservoirs were established by equivalent flowing resistance method.

The low-permeability reservoir is remarkably characterized by threshold pressure gradient,which makes high filtration resistance,declines sweep scope of injected water,owing to the threshold pressure gradient in the process of the fluid flow through porous media,how to confirm the injected water effective scope is one of the key techniques to develop the low-permeability reservoir effectively.

Based on exploration and production practices in the low resistivity reservoirs in Gudong oilfield in recent years, the forming conditions of low resistivity reservoirs are introduced in respects of sedimentary features, sealing conditions, migration pathways and trap types.

It is difficult to judge and develop low resistivity reservoir in term of limited geology information and logging data in the process of development of oilfield.

Under these situation, the low resistivity reservoirs have become the main exploratary target of many oilfields, but due to middle and small scale of these sand bodies of fan delta front muitiple-layer are still not clear, which restrict the development of petroleum exploration.