Application of Rosenbrock search technique to reduce the drilling cost of a well in Bai-Hassan oil field

Conference · Tue Mar 01 00:00:00 EST 1983 · Soc. Pet. Eng. AIME, Pap.; (United States)

OSTI ID:5571983

Aswad, Z A.R.; Al-Hadad, S M.S.

The powerful Rosenbrock search technique, which optimizes both the search directions using the Gram-Schmidt procedure and the step size using the Fibonacci line search method, has been used to optimize the drilling program of an oil well drilled in Bai-Hassan oil field in Kirkuk, Iran, using the twodimensional drilling model of Galle and Woods. This model shows the effect of the two major controllable variables, weight on bit and rotary speed, on the drilling rate, while considering other controllable variables such as the mud properties, hydrostatic pressure, hydraulic design, and bit selection. The effect of tooth dullness on the drilling rate is also considered. Increasing the weight on the drill bit with a small increase or decrease in ratary speed resulted in a significant decrease in the drilling cost for most bit runs. It was found that a 48% reduction in this cost and a 97-hour savings in the total drilling time was possible under certain conditions.

• Research Organization: University of Baghdad
• OSTI ID: 5571983
• Report Number(s): CONF-830397-
• Journal Information: Soc. Pet. Eng. AIME, Pap.; (United States), Vol. SPE 11485; Conference: 3. Middle East oil exibition, Manama, Bahrain, 14 Mar 1983
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
DRILL BITS
ANGULAR VELOCITY
IRAQ
OIL FIELDS
WELL DRILLING
OPERATING COST
OPTIMIZATION
DRILLING FLUIDS
HYDRAULICS
MATHEMATICAL MODELS
OPERATION
PERFORMANCE
ROTARY DRILLS
TIME RESOLUTION
WELL PRESSURE
ASIA
COST
DEVELOPING COUNTRIES
DRILLING
DRILLING EQUIPMENT
DRILLS
EQUIPMENT
FLUID MECHANICS
FLUIDS
GEOLOGIC DEPOSITS
MECHANICS
MIDDLE EAST
MINERAL RESOURCES
PETROLEUM DEPOSITS
RESERVOIR PRESSURE
RESOLUTION
RESOURCES
TIMING PROPERTIES
VELOCITY
020300* - Petroleum- Drilling & Production