Improvements in naturally fractured reservoir simulation with horizontal wells

Book · Tue Jan 01 04:00:00 EST 1991

OSTI ID:6248761

Al-Haddad, S M

A two-phase (oil and water), two-dimensional model, that uses the single porosity formulation and divides the reservoir into blocks that contain either matrix or fracture, has been solved implicitly to simulate naturally fractured reservoirs. The point centered grid and the block centered grid systems have been tested against the analytical solution and show certain disadvantages. A properly weighted grid system has been introduced and successfully tested which overcomes the disadvantages. The effect of the rock material internal friction has been introduced by using a variable angle between the vertical fractures. The impact of horizontal and vertical wells on the produced water-oil ratio, the cumulative oil recovery, and the pressure drop (energy) required, has beenstudied for fractured reservoirs with different primary-secondary vertical fracture permeability ratios. The horizontal well, in general, gives a lower water oil ratio, higher cumulative oil recovery, and lower pressure drop than does the varticla well. Type curves for naturally fractured reservoirs have been generated using this simulator.

• Research Organization: Colorado School of Mines, Golden, CO (United States)
• OSTI ID: 6248761
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ANALOG SYSTEMS
DIRECTIONAL DRILLING
DRILLING
ENERGY SOURCES
FLOW MODELS
FLUID FLOW
FOSSIL FUELS
FRACTURED RESERVOIRS
FRICTION
FUELS
FUNCTIONAL MODELS
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
HYDROGEN COMPOUNDS
MATHEMATICAL MODELS
OIL WELLS
OXYGEN COMPOUNDS
PERMEABILITY
PETROLEUM
POROSITY
PRESSURE DROP
PRODUCTIVITY
RESERVOIR ROCK
SIMULATION
SIMULATORS
TWO-DIMENSIONAL CALCULATIONS
TWO-PHASE FLOW
WATER
WELL DRILLING
WELLS