Riserless Wireline Subsea Intervention in Deepwater Offers Expanded Potential

Riserless light well interventions (RLWIs) were conducted within the deepwater subsea environment of the Gulf of Mexico. The main drivers for RLWI were cost reduction and acceleration of intervention scopes in order to improve well productivity and prevent production deferrals. During the period 2020–24, target wells for interventions were challenged by low margins. However, per the original objectives of RLWI, financial metrics for the candidate wells were still found to be attractive, yielding double-digit net present value and internal rate of return values. A heuristic payback period of 1 to 2 years also was consistently achieved.