METHOD FOR DEVELOPMENT OF WATER FLOATING OIL FRINGES WITH MASSIVE GAS CAPS BY MEANS OF USING LATERAL MULTI-HOLE WELLS Russian patent published in 2020 - IPC E21B43/16 E21B43/30 

FIELD: oil and gas industry.

SUBSTANCE: group of inventions relates to the oil industry, and in particular to the development of oil fringes. Method involves determining the length of the main horizontal shaft of a multi-hole well and the main horizontal shaft of a neighboring multi-hole well. Average length of these shafts is determined. Distance from the center of the main horizontal shaft of the multi-hole well is determined to the center of the main horizontal shaft of the adjacent multi-hole well. Ratio of distance to length is determined. This ratio must be in the range of set values. Analytical expression is used to define the angle between the main horizontal shaft of one multi-hole well and the lateral horizontal wellbore of the same multi-hole well considering empirical coefficients. Side horizontal borehole of the multi-hole well is drilled in the direction of the adjacent multi-hole well at a certain angle to the main horizontal shaft of this multi-hole well. Further, formation is developed in depletion mode.

EFFECT: increased efficiency of development due to increased coverage of deposit and its more complete development.

10 cl, 5 dwg