SU939736A1

SU939736A1 - Agent for suppressing the growth of sulphate-reducing bacteria in flooded oil-bearing formation

Info

Publication number: SU939736A1
Application number: SU802983659A
Authority: SU
Inventors: Илья Матвеевич Шермергорн; Владимир Иванович Гусев; Александр Васильевич Солодов; Альбина Романовна Пантелеева; Рамзия Габдулловна Неизвестная; Эльмира Харисовна Мухаметзянова
Original assignee: Казанский Ордена Ленина Государственный Ветеринарный Институт Им.Н.Э.Баумана
Priority date: 1980-07-17
Filing date: 1980-07-17
Publication date: 1982-06-30

Description

Изобретение относится к химическим средствам борьбы с сульфатвосстанавливающими бактериями (СВБ) и может быть использовано, для подавления роста СВБ в нефтедобывающей промышленности при разработке нефтяных месторождений при заводнении, а также в других областях промышленности, где необходимо предотвратить рост СВБ.The invention relates to chemicals for combating sulfate-reducing bacteria (SFS) and can be used to suppress the growth of SSC in the oil industry during the development of oil fields during flooding, as well as in other industries where it is necessary to prevent the growth of SSC.

Известно применение медной солиThe use of copper salt is known.

5^-хлор-2-оксибензойной кислоты в количестве реагента для подавления роста СВБ в заводняемом нефтяном пласте[!].5 ^- chloro-2-hydroxybenzoic acid in the amount of reagent to inhibit the growth of SSC in a water-flooded oil reservoir [!].

Однако применение указанной соли недостаточно, эффективно из-за адаптации СВБ при длительном применении реагента.However, the use of this salt is insufficient, effective due to the adaptation of SSC with prolonged use of the reagent.

Целью изобретения является повышение эффективности подавления роста сульфатвосстанавливающих бактерий в заводняемом нефтяном пласте.The aim of the invention is to increase the efficiency of suppressing the growth of sulfate-reducing bacteria in a water-flooded oil reservoir.

Указанная цель достигается тем, что в качестве реагента для подавления роста сульфатвосстанавливающих бактерий в заводняемом пласте применяют кумилфенол формулыThis goal is achieved by the fact that as a reagent to inhibit the growth of sulfate-reducing bacteria in a water-flooded reservoir, cumilphenol of the formula

Кумилфенол (2,2-фенил-п-оксифенилпропан) является основным компонентом фенольной смолы - отхода про 15 изводства фенола и ацетона по камульному способу.Cumylphenol (2,2-phenyl-p-hydroxyphenylpropane) is the main component of the phenolic resin - waste from the production of 15 phenol and acetone by the Kamul method.

Содержание кумилфенола в фенольной смоле 40-50% (ТУ38-1028675).The content of cumylphenol in the phenolic resin is 40-50% (TU38-1028675).

Предлагаемый реагент представляет собой кристаллическое вещество с температурой плавления 56-57? умеоенно растворимое в воде, из феноль ной смолы кумилфенол выделяют методом перегонки.The proposed reagent is a crystalline substance with a melting point of 56-57? insoluble in water, cumylphenol is isolated from the phenolic resin by distillation.

Пример. Модель пластовой воды освобождают от кислорода продувкой азотом, заражают СВБ, выделенными из пластовых вод и добавляют кумилфенол в воде 0,5% раствора в определенных дозировках.Example. The formation water model is freed from oxygen by nitrogen purging, the SVB extracted from the formation water is infected, and cumylphenol in water of a 0.5% solution is added in certain dosages.

Пробы выдерживают 24 ч при 2 (/³ С, после чего для выявления жизнеспособных клеток СВБ части, обработанной реагентом, пробы вносят в питательную среду и термостатируют в течение 15 сут. при 35°С.Samples were incubated for 24 hours at 2 (/ ³ C), after which, in order to identify viable cells of the SVB part of the reagent treated, the samples were introduced into the nutrient medium and thermostated for 15 days at 35 ° C.

Затем определяют концентрацию сероводорода и рассчитывают степень подавления СВБ по формуле _П=£*Г_Е юо%, ск где - степень подавления СВБ, ск - концентрация сероводорода в контрольном опыте, мг/л;Then, the concentration of hydrogen sulfide is determined and the degree of suppression of SVB is calculated by the formula _{П =} £ * Г_Е уо%, ck where is the degree of suppression of SVB, ck is the concentration of hydrogen sulfide in the control experiment, mg / l;

с - концентрация сероводорода в опыте с добавкой реагента.C is the concentration of hydrogen sulfide in the experiment with the addition of a reagent.

Лабораторные испытания применения 5 кумилфенола показывают высокую эффективность подавления роста сульфатвосстановливающих бактерий в заводняе мом нефтяном пласте.Laboratory tests of the use of 5 cumylphenol show a high efficiency of suppressing the growth of sulfate-reducing bacteria in a water-filled oil reservoir.

Claims

The invention relates to chemical means of controlling sulfate reducing bacteria (UHV) and can be used to suppress the growth of sulfate reducing bacteria in the oil industry when developing oil fields during water flooding, as well as in other areas of industry where it is necessary to prevent the growth of sulfate reducing bacteria. It is known to use copper salt of 5-chloro-2-hydroxybenzoic acid in the amount of a reagent for suppressing the growth of sulfate reducing bacteria in a wake-up oil field. However, the use of this salt is not sufficient, due to the adaptation of sulfate reducing bacteria with long-term use of the reagent. The aim of the invention is to increase the effectiveness of inhibiting the growth of sulfate-reducing bacteria in a waxy oil reservoir. This goal is achieved by using cumylphenol of the formula Cumylphenol (2,2-phenyl-p-hydroxyphenylpropane) as a reagent for suppressing the growth of sulfate-reducing bacteria in the water-based reservoir. The content of cumylphenol in the phenolic resin is 0-50% (TU38-1028675). The proposed reagent is a crystalline substance with a melting point of 5b-57, soluble in water, and cumylphenol is separated from the phenol resin by distillation. Example. The reservoir water model is freed from oxygen by nitrogen gas, contaminated with SSC separated from the reservoir water, and cumylphenol in water is added with a 0.5% solution in certain dosages. The samples are kept for 2 hours, after which the reagent treated part is detected for viable cells. Samples are introduced into the nutrient medium and thermostatic for 15 days. at. Then, the hydrogen sulfide concentration is determined and the degree of SSC reduction is calculated by the formula where is the degree of SSC suppression, ck is the concentration of hydrogen sulfide in the control experiment, mg / l s is the concentration of hydrogen sulfide in the experiment with the addition of a reagent. Laboratory tests of the use of cumylphenol show high efficiency in suppressing the growth of sulphate-reducing bacteria in a waxy oil reservoir. The invention claims the use of cumylphenol of the formula / G as a reagent for suppressing the growth of sulfate-reducing bacteria in a waxy oil reservoir. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 690106, cl. E 21 B, 1978.