This document discusses coning problems and remedies. Coning occurs when water or gas moves into well perforations during production, reducing productivity. It impacts reservoir depletion and recovery efficiency. Problems include added costs of handling water or gas, reduced pressure without displacement effects, and early well abandonment. Coning can occur in both horizontal and vertical wells. Remedies include reducing production rates and improving well completion.

1. CONING PROBLEMS
AND REMEDIES
IRFAN KHAN
DEPARTMENT OF PETROLEUM AND GAS ENGINEERING
DAWOOD UNIVERSITY OF ENGINEERING AND TECHNOLOGY
KARACHI

2. CONNING
• CONING IS THE MECHANISM UNDERLYING THE UPWARD
MOVEMENT OF WATER AND/OR THE DOWN MOVEMENT
OF GAS INTO THE PERFORATIONS OF A PRODUCING
WELL.
• CONING CAN SERIOUSLY IMPACT THE WELL
PRODUCTIVITY AND INFLUENCE THE DEGREE OF
DEPLETION AND THE OVERALL RECOVERY EFFICIENCY OF
THE OIL RESERVOIRS.

4. PROBLEMS OF WATER AND GAS CONING
COSTLY ADDED WATER AND GAS HANDLING
GAS PRODUCTION FROM THE ORIGINAL OR SECONDARY
GAS CAP REDUCES PRESSURE WITHOUT OBTAINING THE
DISPLACEMENT EFFECTS ASSOCIATED WITH GAS DRIVE
REDUCED EFFICIENCY OF THE DEPLETION MECHANISM

5. PROBLEMS OF WATER AND GAS CONING
THE WATER IS OFTEN CORROSIVE AND ITS DISPOSAL
COSTLY
THE AFFLICTED WELL MAY BE ABANDONED EARLY
LOSS OF THE TOTAL FIELD OVERALL RECOVERY

6. CONING CAN OCCUR
IN BOTH KIND OF WELLS
HORIZONTAL WELLS
VERTICAL WELLS

7. BY REDUCING RATE OF
PRODUCTION
BETTER WELL COMPLETION
REMEDIES FOR CONING

8. THANKS