What should be done if shallow gas flow is detected?

Activating the diverter system is the appropriate response if shallow gas flow is detected. The diverter system is designed to redirect gas and fluids safely away from the wellhead area, allowing for a controlled response to unexpected pressures and flows. This is crucial in maintaining well control and preventing blowouts or uncontrolled releases of gas, which can pose safety risks to personnel and the drilling operation.

The diverter system creates a containment strategy to manage the flow of gas while allowing for pressure to be monitored, enabling the crew to assess the situation accurately and decide on further actions. This proactive approach is vital for ensuring the safety and integrity of the well.

In contrast, shutting down all pumps may not adequately address the immediate risk posed by the gas flow, as it could lead to further complications without addressing the root of the problem. Increasing drill weight might inadvertently increase the pressure in the well, exacerbating the situation, while decreasing the penetration rate would not respond effectively to the presence of gas. Thus, activating the diverter system stands out as the most appropriate and effective initial response in such scenarios.