METHOD OF DEVELOPING WELL OIL RESERVOIR WITH HORIZONTAL TERMINATION Russian patent published in 2018 - IPC E21B43/16 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil industry and can find application in the development of heterogeneous terrigenous or carbonate productive formations with horizontal wells. By the method, the areas are identified as intervals of a productive formation with an inflow profile that differ in the specific oil rate by 20 % or more. Selected sections are separated by packers. Pump is descended into the well and well production is taken from each site with the maintenance of the same water cut in the sections. In this case, horizontal drill holes are drilled or horizontal wells are chosen so that their most productive areas in horizontal wells are located in sequence closer to the bottom. As the product is flooded, the most flooded and productive areas are successively cut off from the face by passing packers with adjustable valves and/or jets, allowing to maintain the same water cut of the product along the entire length of the horizontal completion of the well when extracted by one pump located above the proximal to the mouth of the installed packers. Due to the valves and/or jets of the packers, the selections of the highly productive sections are reduced and the water flooding front is leveled near the horizontal end of the well, which prolongs the operation of the well in a predetermined mode to ensure the selection of additional products.

EFFECT: increased effectiveness of the method due to increasing its manufacturability and cheaper, providing the possibility of perform the descent, repair and maintenance of descended structural elements.

1 cl, 1 dwg