EXPERIENCE OF USING ANHYDROUS DRILLING MUD FOR CORING AT ONE OF THE FIELDS OF THE TIMAN-PECHORA OIL AND GAS PROVINCE
UDC: 622.245.3
DOI: 10.33285/0130-3872-2021-3(339)-20-27
Authors:
SAETGARAEV ALMIR DAMIROVICH1,
NEKRASOVA IRINA LEONIDOVNA 2,
KHVOSHCHIN PAVEL ALEXANDROVICH 2,
GARSHINA OLGA VLADIMIROVNA 2,
KAZAKOV DMITRY ALEXANDROVICH 2,
BOROVKOVA IRINA SERGEEVNA 2,
KHARIN SERGEY SERGEEVICH2,
MELEKHIN SERGEY VIKTOROVICH2,
SHILOV IGOR ANATOLIEVICH2
1 LLC "LUKOIL-Komi", Usinsk, Russian Federation
2 PermNIPIneft, Perm, Russian Federation
Keywords: anhydrous drilling mud, oil-based drilling fluid, extraction and distillation method, residual oil saturation coefficient, non-hydrophilic reservoir, Yareyuskoye field
Annotation:
The paper discusses the results of studies on the development of a anhydrous drilling mud formulation for coring in the mining-geological conditions of the fields of the Timan-Pechora oil and gas province. The results of field tests of the developed solution at the Yareyuskoye field are presented. A program of measures is described that regulates the procedure for sampling, isolation of cores on the surface, conducting primary studies at the well and transporting the core to the laboratory, which made it possible to ensure the invariability of the properties, and, most important, the quantitative content of fluids in the pore space of the sampled core. The results obtained during studies of the water and oil saturation of core samples from the deposits of the Lower Permian deposits of the Yareyuskoye field, selected by means of anhydrous drilling mud as a flushing fluid, will be used to calculate hydrocarbon reserves in reservoirs with a complex pore space structure and having non-hydrophilic properties.
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