CONSTRUCTION FINISHING METHOD FOR HORIZONTAL PRODUCER Russian patent published in 2014 - IPC E21B43/02 

FIELD: oil and gas industry.

SUBSTANCE: in drilling, seepage-volume characteristics of the bed and their alteration over the borehole are defined, the borehole is divided into zones that differ in said characteristics by 1.5-1.6 times to select the filter performance separately for each zone and quantity of holes. In the filter openings under the plugs mesh filtering elements are installed, the production string is run in with the filter equipped with the behind-the-casing oil-swellable packers, which are set at boundaries of the areas with different seepage-volume characteristics. The production string is set up, then the pipe string is run in into the well and a chemical agent is injected filling the filter, the well is hold for the time of the plugs destruction in the filter openings and then reaction products are washed out. A coil tubing is run in up to the well bottom, then it is transferred from the well bottom to the head with simultaneous pumping of cement slurry through it thus pouring the lower perimeter of the filter.

EFFECT: improving quality of the productive stratum penetration.

3 dwg