SPE logo

Development of Gas Condensate Fields and Fields with Oil Rims

12 – 14 February 2013

Moscow, Russia | Aerostar

Technical Agenda

Session 1 – Gas-Condensate Reservoir Studies

  • Gas-condensate studies: conditions that are necessary to obtain representative samples of reservoir fluids. Advantages and disadvantages of subsurface and surface sample collection; integration of samples.
  • New gas-condensate study technologies with surface sampling (using multiphase flow meters, on-stream sampling systems and a slip-stream sampling method). Results of comparison with conventional methods.
  • Subsurface open-hole sampling using wireline and drillstem formation testers (MDT and similar systems): advantages and disadvantages.
  • Gas-condensate studies in oil-gas-condensate reservoirs.

Session 2 – Laboratory Studies and Modeling of Phase Behavior of Gas-Condensate Systems

  • Laboratory studies of complex gas-condensate and oil-gas-condensate systems. Transportation and storage of samples, laboratory control of quality (QC), correctness of resaturation.
  • Laboratory experiment on differential condensation (CVD). How correctly it reflects the depletion-drive development process.
  • Equations of state for describing gas-condensate and oil-gas-condensate systems. Grouping of components and description of pseudofractions.
  • Definition of unified fluidal models for multipay fields in conditions of poor knowledge.
  • Modeling of hydrocarbon systems under high thermobaric conditions (НР, НТ).
  • Phase behavior of gas-condensate systems in dense formations and shales.
  • Determination of reservoir fluid geochemical characteristics (Fingerprinting) and their use for sharing production, accounting reserve recovery, and determining connectivity of gas-condensate reservoirs.

Session 3 – Gas-Dynamic Well Surveys. Study of Phenomena in Gas-Condensate Well Bottom Zones

  • Stationary and non-stationary surveys of gas-condensate wells. What can we obtain from them to describe the well bottom zone? Evaluation of well productivity in conditions of condensate bank formation.
  • Mathematical modeling of gas-condensate mixture inflow in wells. Can we take all factors into account?
  • Physical modeling of gas-condensate system filtration into the bottom-hole formation zone. Can we reproduce all phenomena?
  • Filtration of gas-condensate systems into the well bottom zone in dense reservoirs and shales.

Session 4 – Improvement of Gas-Condensate Well Productivity

  • Horizontal wells, multilateral wells, and hydraulic fracturing in gas-condensate reservoirs.
  • Bottom-hole formation zone treatments with hydrocarbon solvents.
  • Bottom-hole formation zone treatments with non-hydrocarbon solvents.
  • Change of formation wettability in the bottom-hole formation zone.
  • To what extent are gas-condensate well bottom zone treatments effective for improvement of well productivity?

Session 5 – Condensate Recovery, Factors Determining It, and Ways to Improve It

  • Influence of well spacing, design, and abandonment pressure.
  • Reservoir pressure maintenance – cycling process.

Session 6 – Oil Rims: Significance and Problems of Development

  • Substantiation of oil saturation distribution for oil rims.
  • Determination of capillary pressures, relative permeabilities, and water flood and gas displacement efficiencies.
  • Oil rim development systems. Optimum design of production wells.
  • Water injection into oil rims and its efficiency.
  • Commingled production of oil, gas, and condensate: principles of sharing and accounting.