Effect of treatment of an injection well of the Usinskoye oilfield with acid GBK composition on the oil recovery and properties of produced fluids

PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES 2019 Pub Date : 2019-11-19 DOI:10.1063/1.5132126

V. S. Ovsyannikova, E. A. Rozhdestvensky, L. Strelets, I. Kuvshinov, L. Altunina

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Abstract

An acid composition of prolonged-action based on an inorganic acid adduct, a polyol and a surfactant has been developed at the Institute of Petroleum Chemistry, SB RAS. Introduced into the injection well, the composition exerts a prolonged positive effect on the oil recovery in the area of its influence. The increase in oil production rates and decrease in water cuts are accompanied by changes in viscosity of extracted oil and mineral composition of produced water. The appearance of components of a new composition and products of its hydrolysis in the produced fluids suggests the inclusion of still virgin zones, changes in filtration flows, and desorption of heavy-oil components from reservoir rock after its break-up.An acid composition of prolonged-action based on an inorganic acid adduct, a polyol and a surfactant has been developed at the Institute of Petroleum Chemistry, SB RAS. Introduced into the injection well, the composition exerts a prolonged positive effect on the oil recovery in the area of its influence. The increase in oil production rates and decrease in water cuts are accompanied by changes in viscosity of extracted oil and mineral composition of produced water. The appearance of components of a new composition and products of its hydrolysis in the produced fluids suggests the inclusion of still virgin zones, changes in filtration flows, and desorption of heavy-oil components from reservoir rock after its break-up.

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Usinskoye油田注水井酸性GBK成分处理对采收率和产液性质的影响

以无机酸加合物、多元醇和表面活性剂为基础，研制了一种长效酸组合物。注入井后，该组合物对其影响区域的采收率产生长期的积极影响。采油速率的提高和含水率的降低伴随着采出油粘度和采出水矿物成分的变化。在采出液中出现新成分及其水解产物，表明仍存在未开发层，过滤流动发生变化，以及油藏岩石破碎后重油成分的解吸。以无机酸加合物、多元醇和表面活性剂为基础，研制了一种长效酸组合物。注入井后，该组合物对其影响区域的采收率产生长期的积极影响。采油速率的提高和含水率的降低伴随着采出油粘度和采出水矿物成分的变化。在采出液中出现新成分及其水解产物，表明仍存在未开发层，过滤流动发生变化，以及油藏岩石破碎后重油成分的解吸。

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PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES 2019

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