PROCEDURE FOR DEVELOPMENT OF PAYABLE CARBONATE BED Russian patent published in 2011 - IPC E21B43/18 E21B43/27 

FIELD: oil and gas production.

SUBSTANCE: procedure consists in exposure of payable bed by drilling, in flushing with drill polymer agent, in string cementing and in its perforation by drilling to big depth with interval between perforation orifices 1-3 m, in lowering production string or drilling pipes with packer, in disconnection of upper perforation channels from lower ones of one of bed intervals with packer, and in treatment of bed with acid by circulation in annular space. To accelerate operation of treatment and for increase of its efficiency, there is cyclically created vacuum, for example, by swabbing under the packer simultaneously with treatment of bed in the bottomhole zone. Also, operation of treatment is commenced from an upper interval near a bed roof at pressure below pressure of bed hydraulic break created over the packer through tube space.

EFFECT: raised efficiency of procedure due to simplified process and reduced time.

4 cl, 2 dwg