CONTAINER FOR INHIBITOR SUPPLY INTO WELL Russian patent published in 2019 - IPC E21B37/06 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil industry, namely, to devices for dosing inhibitor-reagent into liquid medium. Container consists of section, upper part of which is made with possibility of connection with adapter to pump and is equipped with end hydraulic channel, made with possibility of connection of internal cavity of section with annular space of well. Lower part of the section is connected to the contactor. Contactor is made in the form of container with perforation in lower part and perforated upper plug. Filled, porous granules are arranged inside said contactor. Granules used can be expanded clay, or aggloporite, or pumice, or slag pumice, or foam ceramics, or other porous granules with open porosity of 10–50 %. Inside the section there is an inhibitor bounded on both sides by blind disc-shaped discs the diameter of which is smaller than the inner diameter of the section. Said washers can be locked at least in two points on their side surface to section inner wall to make gaps in places outside said fixation between washer outer surface and section inner surface. Container can be combined into module of several sections, wherein contactor is connected to lower section, and channel is made in upper part of upper section.

EFFECT: increasing uniformity and stabilizing inhibitor dosing into the well at various stages of its dissolution: from the beginning to the end, at different density and water content of formation fluid, and at different content of mechanical impurities.

10 cl, 4 dwg