PROCEDURE FOR DEVELOPMENT OF HYDROCARBON DEPOSIT Russian patent published in 2011 - IPC E21B43/16 

FIELD: oil and gas production.

SUBSTANCE: procedure consists in pumping associated gas through pressure wells into horizon of lost circulation corresponding to horizon with residual oil and/or gas and/or formation water; said horizon is located below pay. There is maintained initial pressure at pumping associated gas, which is as high, as pressure of exposure of natural fissures present in the lost circulation horizon. There are recorded change of volumes and pressure of pumped associated gas. Upon stabilisation of pumping modes, there is made a conclusion on effect of associated gas pumped to the pay. In the pay pressure is boosted to overcome an initial value required for development of the deposit. If pumped associated gas does not effect the pay, then this gas is pumped into additional receiving reservoirs. In case of failure of the above described effect from pumped associated gas, there is used the reservoir for temporary storage of associated gas.

EFFECT: increased efficiency of oil deposit development and ecological safety in first years of operation.

2 cl