Abstract:

The paper analyzes methods for improving the efficiency of water insulation works on the example of the Nizhnevartovsk field. Increasing the efficiency of water isolation works leads to lower costs for maintaining the operability of wells and increasing the productivity of the field, which has a direct impact on the financial performance of the company. Therefore, the problem of isolating the water supply is urgent. The aim of the work was to improve the technology of water isolation works in an open horizontal oil well trunk in the absence of information about the location of water inflow intervals. In this work, observation, theoretical work planning, logical analysis, the use of scientific literature and generalization of information were used. It has been established that the structuring of waterproofing materials and blocking liquids based on polyacriamide and reverse petroleum acid emulsions makes it possible to increase the selectivity of the effect of the insulating mass and ensure complete decomposition of the blocking liquid into two initial phases without residual contamination of the formation. The economic calculations of the event are presented, as well as the results of calculations of the economic effect of the use of this technology.

Keywords: water-shutoff works, horizontal well, open bore, exposure selectivity, residual resistance factor, liquid packer, oil-acid emulsion, lifetime