New inhibitor against asphaltene-resin-paraffin deposits and salts

Abstract

The deposition of asphaltenes, resins, paraffins (ARP) and salts in tubing, surface equipment and transport lines is one of the important problems in the production and transportation of well products. At high temperatures at the bottom of the well, the components of crude oil are in a liquid state; when the temperature decreases, as they rise to the surface and exit the well, asphaltene, resinous, and paraffin compounds begin to separate from the oil and settle in production pipes and equipment. Laboratory studies were carried out using highly paraffinic oil from the Sangachal-Duvanni-Khara-Zira field, a new developed paraffin sedimentation inhibitor named after N. Narimanov. The effectiveness of inhibitors was determined by the «cold block» method. The results of numerous studies have shown that the developed new inhibitor is highly effective in preventing the precipitation of paraffins and salts, as well as in improving both the rheological properties and the freezing point of oils. Keywords: Well; Parafin; Asphaltene; Resin; Salt; Bottomhole zone; Tubing; Reagent; Inhibitor; Composition.