METHODOLOGY FOR DETERMINING THE MAXIMUM ANHYDROUS FLOW RATE OF A HORIZONTAL OIL WELL IN DEPOSITS WITH PLANTAR WATER

Abstract

The article is devoted to the use of approximate methods for determining the productivity of horizontal oil wells and comparing the results of flow rate calculations by these methods on the example of an oil facility of the Karachaganak field. Watering or gassing of the oil-bearing interval significantly reduces the phase permeability of oil and leads to a very significant decrease in oil flow rate. Therefore, technologies that minimize the process of cone formation are of great practical importance. From the point of view of the influence of flooding on the technological mode of operation of a horizontal oil well and the possibility of determining the anhydrous flow rate, it follows that the following possible options are proposed to avoid flooding of the well:- the use of horizontal wells with the appropriate location of the horizontal trunk, depending on the proximity to the oil-water contact (VNK), taking into account the magnitude of the depression created on the formation; - selection of the appropriate design of the well, the length and diameter of the fountain pipes in the horizontal part of the trunk, providing the amount of depression necessary to slow down the pace of movement of plantar water.