Reservoir fluid studies

Reservoir fluid study includes a wide range of works on investigating physical and chemical properties of reservoir fluids required for estimating reserves and designing development, technique, and technology of oil recovery:

  • studies of downhole and surface samples of reservoir fluids in the amount stipulated by OST 153-39.2-048-2003. Oil. Routine Study of Reservoir Fluids and Separated Oils. Scope of Study and Result Reporting Form (developed by VNIIneft JSC) that are required for estimating the reserves and designing development in accordance with the requirements of the State Reserves Committee and Central Development Commission;
  • studies (experimental and analytical) of reservoir fluids with anomalous properties and composition and occurring under anomalous conditions;
  • studies of oil deposits with high content of paraffins, resins, asphaltenes, and sulfur compounds;
  • studying the impact of asphalt, resin, and paraffin deposits on the processes of development and oil recovery;
  • creation of industry standards in the field of reservoir fluid and separated oil studies;
  • creation of information databases for monitoring physical and chemical properties of reservoir oils.

The Institute is equipped with modern equipment required for conducting physical and chemical studies of degassed and reservoir fluids:

  • UIPN-400 unit designed for measuring volume, viscosity, pressure, and temperature and for integrated study of reservoir oil physical properties; allows carrying out flash liberation and differential liberation experiments;
    UIPN-400 unit
    (developed by VNIIneft JSC; patent No.2248246; serial production)

  • VPP-300 downhole suction piston samplers designed for downhole oil sampling;
    VPP-300 sampler

  • Shimadzu (Japan) gas-liquid chromatographs.

The range of analytical problems using chromatographic analysis techniques includes:

  • component analysis of hydrocarbon gases (methane, ethane, propane, iso-, n-butanes, iso-, n-pentanes, iso-, n-hexanes, iso-, n-heptanes, С8+ residue, higher);
  • component analysis of non-hydrocarbon gases (oxygen, nitrogen, hydrogen sulphide);
  • oil composition analysis up to С24+.

GC-2010 gas chromatographs

SV-10, SV-100 oscillatory viscometers


DMA-4500M density

Spectroscan - S

Soxhlet extractor for determining
resinous-asphaltenic materials

There are density meters, automatic analyzers for determining sulfur in oil; modern potentiometric titrator for determining acid value in oil and six-component analysis of formation waters, paraffin saturation point etc.; vibro viscometers, salinometer.

Following standards and procedures have been created based on the works of the Research Center and Institute laboratories:

  • RD 39-0147035-226-88. Guidelines for identifying deposits of paraffin-saturated oils;
  • Procedure for estimating phase state of paraffins in reservoir oils;
  • OST 153-39.2-048-2003. Oil. Routine Study of Reservoir Fluids and Separated Oils. Scope of Study and Result Reporting Form;
  • STO RMNTK 153-39.2-001-2003 Paraffin saturation point;
  • STO 153-39.2-2001-2003 Oil. Procedure for investigating paraffin oils.
  • Regional data banks have been created for physical and chemical properties of reservoir oils that enable prompt data selection, specific calculations on their basis, and establishment of correlation dependences.
  • Large volumes of scientific research are carried out in the field of physical and chemical properties of reservoir fluids both for justifying the selection of oil field development technologies (using standard practices) and creating new technologies. Works are performed in collaboration with major oil producers of Russia (LUKOIL, Slavneft, Sibneft, Noyabrskneftegaz, RMNTK Nefteotdacha) and foreign companies from Cuba, Venezuela, TNK-ВР and others.