IDENTIFYING PARAMETERS OF POROSITY CHANGE IN COMPLEX RESERVOIR AFTER CLAY ACID TREATMENT
UDC: 550.832
DOI: -
Authors:
LOBUSEV Alexander V.
1,
TYUKAVKINA Olga V.1,
PERMYAKOVA Irina S.2,
MILETENKO Nikolay V.3,
POZDNYAKOV Alexander P.1
1 Gubkin Russian State University of Oil and Gas (National Research University, Leninskiy prospect, 65, 119991, Moscow, Russian Federation
2 OOO SZHZH Vostok, Shabolovka, 31, р. В, 115162, Moscow, Russian Federation
3 Ministry of Natural Resources and Ecology of the Russian Federation, Bolshaya Gruzinskaya, 4/6, 123995, Moscow, Russian Federation
Keywords: hydrochloric acid solution, clay-acid solution, surface-active substances, inhibitor, stabilizer, porosity
Annotation:
Currently, the deposits located within the Fedorov dome structure are at the final stage of development. The share of complex projects under construction containing difficult-to-recover reserves is more than 98 %. All reservoirs are characte- rized by low natural permeability, high clay content, significant water retention ability and heterogeneity in mineralogical composition and reservoir properties. It is important to note that the heterogeneity of rocks in the content of carbonates is generally low and medium, while a complexly built reservoir often contains interlayers with a high content of carbonates. In such conditions, deposits are developed using the technology of clay acid system treatment (aqueous clay-acid compounds with boric acid additives) without prior removal of carbonate compounds.
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