Challenge Sustained Annulus Pressure (SAP) can occur at any point in a well’s life cycle and cause potential hazards such as casing failure or well collapse. These issues can have a substantial detrimental effect on a field’s production capacity. Effective methods for SAP monitoring and identification help operators to diagnose the issue at an early stage and maintain safe operations throughout the field development process. Two years after a horizontal oil producer was drilled and completed, it began recording surface pressures of 7.2 MPa in the 7-95/8-in. annulus. This is a common issue in high Gas- Oil-Ratio (GOR) wells where the target reservoir has a gas cap. In this case, the field operator wanted to determine the source of SAP. Solution The operator selected TGT’s M

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