In the context of the oil and gas industry, "below the tension ring" typically refers to a specific location or depth relative to the tension ring of a drilling rig or platform. The tension ring is a critical component of offshore drilling structures that helps support the weight of the drilling equipment and manage the forces exerted during drilling operations.

When discussing operations or equipment situated "below the tension ring," it generally means activities or components that are located beneath this structural element. This could include various aspects of the drilling operation, such as the blowout preventer (BOP) stack, riser systems, or other downhole equipment used for exploration and production activities.