TECHNOLOGIES AND METHODS FOR PREVENTION OF INORGANIC SALT DEPOSITION IN ROMASHKINSKOYE OIL FIELD WELLS

Abstract

Background Solving the problem of scaling on the inner surfaces of downhole and associated equipment is one of the most important tasks in oil production. Crystalline compounds formed in the stratums, as well as at all stages of oilfield equipment operation, lead to premature pumps wear and jamming, thereby leading to losses in the product of extraction and an increase in the economic costs of repair and purchase of new equipment. Aims and Objectives The aim is to choose a method to prevent salt deposition and its testing at Romashkinskoye oil field. Results Based on the data on one of the areas of the Romashkinskoye oil field, three methods for controlling salt formation have been studied: 1) prevention of salt formation by inhibitory protection (SNPCH 5314 reagent); 2) method for preventing salt and paraffin deposits based on electrophysical phenomena by implementing Weatherford's ClearWELL instrument, which is a device installed by means of a ferrite ring in production wells; 3) technology of short-time well operation, which consists in the periodic replacement of fluid pumping and its accumulation in the well. The most effective method of prevention salt formation was selected, in which the process of exploitation did not reduce depression to the stratum, consequently, the volumes of oil production at the Romashkinskoye oil field were not lost, and the number of repairs related to the salt formation problem decreased.