Strengthening Intervention Approaches: The Influence of Multilateral Technologies on Field Development

Effective well completions are fundamental to optimizing well performance. Innovative planning and design play a key role in improving this process, enabling the elimination of observation wells and reducing the abandonment of pilot holes. Despite advancements such as lateral re-entry windows that provide access to each drilled lateral, interventions remain necessary. Therefore, a seamless completion design is essential to facilitate interventions and avoid operational challenges. Lateral access windows significantly enhance the efficiency and effectiveness of well completions when thoughtfully integrated. Multilateral wells should be engineered to allow smooth interventions while maximizing well performance. The use of permanent downhole gauges in these wells enables continuous monitoring of pressure and temperature, delivering valuable data for timely operational decisions. Incorporating additional accessories further improves system reliability and provides contingency options in case of accessory failures. A well-considered design that addresses operational challenges is critical to maintaining system integrity and performance. Seamless operations during interventions in multilateral wells are vital to minimizing risks and ensuring sustained well functionality. Periodic logging and monitoring activities, including intervention and production logging, are typically conducted in the vertical wellbore, which acts as the observation lateral. The lateral access window effectively supports these operations by enabling interventions in both the mother bore and other laterals. Field data has demonstrated the effectiveness of lateral access applications in advancing well development, with multiple wells successfully undergoing interventions for logging and treatment in both vertical and horizontal laterals. To facilitate interventions in horizontal laterals, slickline can be used to retrieve an isolation sleeve and install a tubing exit whipstock (TEW) for lateral re-entry. Following this, coiled tubing or wireline equipped with a tractor is deployed through the window into the lateral to perform intervention operations such as production logging. After completing the intervention, the TEW is removed, the isolation sleeve reinstalled, and production resumed. This multilateral completion technology exemplifies a design that simplifies and enhances access to both vertical and horizontal laterals without requiring rig mobilization or complex retrieval processes. Its lateral access capabilities improve real-time monitoring and support operational decisions, while streamlining interventions and enhancing overall well performance. The technology also offers a range of completion methods, each with distinct advantages, demonstrating the versatility and effectiveness of multilateral completions.