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Title: Core acid treatment influence on well reservoir properties in Kazan oil-gas condensate field
Authors: Janishevskii, A.
Ezhova, Aleksandra Viktorovna
Keywords: кислотная обработка; коллекторские свойства; месторождения; нефтегазовые скважины; горные породы; проницаемость
Issue Date: 2015
Publisher: IOP Publishing
Citation: Janishevskii A. Core acid treatment influence on well reservoir properties in Kazan oil-gas condensate field / A. Janishevskii, A. V. Ezhova // IOP Conference Series: Earth and Environmental Science. — 2015. — Vol. 27 : Problems of Geology and Subsurface Development : XIX International Scientific Symposium in honor of Academician M. A. Usov, 6–10 April 2015, Tomsk, Russia. — [012012, 5 p.].
Abstract: The research involves investigation of the influence of hydrochloric acid (HCI-12%) and mud acid ( mixture: HCl - 10 % and HF - 3 %) treatment on the Upper-Jurassic reservoir properties in Kazan oil-gas condensate field wells. The sample collection included three lots of core cylinders from one and the same depth (all in all 42). Two lots of core cylinders were distributed as following: first lot - reservoir properties were determined, and, then thin sections were cut off from cylinder faces; second lot- core cylinders were exposed to hydrochloric acid treatment, then, after flushing the reservoir properties were determined, and thin sections were prepared. Based on the quantitative petrographic rock analysis, involvin 42 thin sections, the following factors were determined: granulometric mineral composition, cement content, intergranular contacts and pore space structure. According to the comparative analysis of initial samples, the following was determined: content decrease of feldspar, clay and mica fragments, mica, clay and carbonate cement; increase of pore spaces while in the investigated samples- on exposure of rocks to acids effective porosity and permeability value range is ambiguous.
Appears in Collections:Материалы конференций

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