The effect of the distance between the trunks of horizontal oil wells on their productivity

The article deals with a uniform fan arrangement on a circular formation with different distances from its center to the entrance to the formation of the initial section of horizontal trunks. This problem was solved by creating a geological and mathematical model of a circular formation drained by horizontal wells of different lengths and working with the same depression on the formation. When horizontal wells are fanned out on a circular formation, their productivity is significantly affected by the distance from the center of the circle to the entrance of the trunk into the productive formation. The degree of influence of the distance from the center of the circle to the entrance of the horizontal shaft into the formation depends on: the capacitive and filtration properties of the productive formation; the magnitude of depressions created in wells; the design of the horizontal section; the heterogeneity of the formation in thickness and area; the radius and angle of the sector drained by wells and the completeness of the sector opening.