SELECTION OF OPTIMAL CONDITIONS FOR RECOMBINATION OF FORMATION FLUIDS SAMPLES
UDC: 622.276
DOI: 10.33285/0207-2351-2021-1(625)-41-45
Authors:
ZAKIROV DMITRY RADIKOVICH1,
CHERNOV EVGENY NIKOLAEVICH1,
PAVLOV PAVEL VLADIMIROVICH1,
TORIN SERGEY VALERIEVICH1
1 SamaraNIPIneft LLC, Samara, Russian Federation
Keywords: oil fields, oil, GaS, depth samples, recombined samples, formation fluids, saturation pressure, gas content
Annotation:
Currently, most of the fields in the Orenburg region are entering the final stage of development. Extraction is carried out, as a rule, by pumping. Conditions for taking representative depth samples are often missing. At the same time, it is impossible to deny the possibility of changing the properties of the fluid along the strike of the deposits, as a result of which the study of the properties of reservoir oil for each well should be carried out constantly, as new areas are drawn into its drainage zone. If it is impossible to take deep samples, as an alternative to studying deep oil samples, the preparation of recombined ones is provided. This raises the problem of choosing the conditions for recombination, which requires detailed study. Wellhead gas, especially from wells in fields that are at the final stage of development, differs markedly from gas of single separation of formation fluid. Therefore, its direct use during recombination without preliminary preparation can give unrepresentative results. This paper provides guidelines for correcting this inconsistency. In this case, it is supposed to use the results of experiments, as well as archival material on the study of deep samples.
Bibliography:
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