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Shaydullin V.A.,
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shaydullinva@bnipi.rosneft.ru |
“RN-BashNIPIneft” LLC (“Rosneft” PJSC Group Company) Ufa |
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Khatmullin A.R.,
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“RN-BashNIPIneft” LLC (“Rosneft” PJSC Group Company) Ufa |
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Turiyanov A.R.,
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“RN-BashNIPIneft” LLC (“Rosneft” PJSC Group Company) Ufa |
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Mingalishev F.K.
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“RN-BashNIPIneft” LLC (“Rosneft” PJSC Group Company) Ufa |
DOI: 10.24412/2076-6785-2024-1-38-42
Abstract
This study focuses on investigating the impact of water-based killing fluids on the reservoir permeability of oil-bearing sandstone formations in the Volga-Ural oil and gas province. The main factors influencing the effectiveness of killing fluids are the compatibility with formation brines and its effect on rock wettability. Field trials confirmed the relevance of the research, demonstrating a lower productivity loss, as well as a reduction in well shut-in time.
Materials and methods
The evaluation of the water-based killing fluids impact on the reservoir permeability was performed through core tests. Core samples was selected from Carboniferous and Devonian target intervals. Verification of the research results was carried out by testing the selected killing fluids during well workovers.
Keywords
killing fluid, core-flooding experiment, sandstone formation, scaling, salt precipitation, clay stabilizer, surfactant
