Global Agency of Geosciences Experts

05-03 Reservoir drive mechanisms

Objectives

This course will give an overview of drive mechanism, flow description, natural depletion, aquifer drive and and show how to improve oil recovery.

Who should attend

Profesionnals with a Scientific background.

Prerequisites

Background in Geosciences, petroleum geology or basic Petroleum Engineer knowledge

Duration

5 Session

Languages
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1
Session

General overview

Field development methods

Oil & gas natural depletion, improved oil recovery,  enhanced oil recovery

Material balance analysis

Fluid PVT behaviour, material balance equation

Quiz

2
Session

Flow description

One phase flow  Darcy’s law  Multi phase flow

Saturation functions

Reservoir characterisation

Flow units, W/O & G/O displacement

Quiz

3
Session

Natural depletion

Key phenomenon’s initial pressure regimes

Rock compaction & fluid expansion

Oil reservoirs

Oil depletion above saturation pressure, solution gas drive,  aquifer drive and gas cap drive

Gas reservoirs

Dry & wet gas depletion, gas condensate depletion

Quiz

4
Session

Aquifer drive

Aquifer drive identification

Material balance equation, aquifer types, boundary  conditions & flow regimes

Aquifer modelling

Steady & semi steady state models, diffusivity equation,  transient models, Van Everdingen & Hurst functions

Quiz

5
Session

Improved oil recovery

Key concepts

Water & immiscible gas injection, microscopic recovery &  sweep efficiency, well pattern

Sweep along one flow line

Fractional flow, transport equation & saturation profile

Volumetric sweep efficiency

Areal & vertical sweep

Quiz

LECTURERS

This gage training is available in

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