Session Moderators: David Talbott, Apache; Ahmed Hassan, Pico International Petroleum; Mohamed Ghareeb, Lufkin Industries Inc
Session Chairs: Leonardo Salvadori, Dana Gas; Ahmed Aly, Technical Petroleum Svcs Inc
Around 30-40% of the total oil produced in the world comes from contributions of marginal fields. Despite the challenges in developing these kind of fields economically, it is largely recognized that if properly managed, marginal fields can offer excellent opportunities for production improvement and profit for companies of any size. A substantial amount of hydrocarbons can be unlocked in many areas of the world if the appropriate exploration and engineering technology is applied. New geological concepts, appropriate well logging acquisition and interpretation techniques, specifically designed geophysical surveying and processing methodologies, followed by sound reservoir engineering work are the keys of success in order to maximize the value of marginal fields.
Integrated solutions, multidisciplinary studies, proper exploration and reservoir project management can also materially contribute in enhancing the hydrocarbon potential of marginal fields. More synergy between international and national oil companies and contractors will contribute to make a step change in this emerging sector.
Session Chairs: Sayed Fadel; Anil Mathur, Schlumberger
Marginal fields have long been recognized as the step-child in the oil and gas industry with the larger share of E&P expenditure geared towards known prolific fields and more recently into shale gas plays in North America and other parts of the world. However, with current oil prices and energy scenarios it behooves the industry as a whole to direct attention to marginal fields which still hold a large potential for incremental production. Revitalizing mature fields embraces multiple objectives, especially maximizing production while minimizing capital expense, reducing the inevitable decline rate and minimizing operating expenses.
Recognition of key technologies is vital to rejuvenating mature fields and providing solutions and assessment of existing resources. Some of these could encompass newer technologies in the areas of reservoir monitoring and surveillance, reservoir characterization, latest drilling & completion technologies for horizontal wells, production enhancement and optimization, new stimulation and fluid technologies, and sand and water management solutions. A vast, bypassed resource still remains to be tapped in marginal fields.
Session Chairs: Osama Abdalla, ENVENTURE Middle East Limited; Gamal Gouda, ENI; Osama Sanad, Halliburton
In some applications, evaluations of drilling performances based on time and cost do not fit management targets but could be mandatory for drilling new wells or re-entry in abandoned wells to produce from low margin fields. Drilling strategies for such application have different principles to consider rather than standard company policies for well design, including casing design, well head, drilling mud, cementing, etc. To meet the criteria of low drilling budget in low margin reservoir, drilling engineers need to optimize ideas and re-orient management decisions that could lead to using company surplus stock, recycling and reusing mud for drilling, and re-evaluating usage bits and old well head.
In well intervention, applied variable drilling techniques have proven positive results in production recovery and better drilling performance. These techniques, such as short radius well re-entry, coil-tubing horizontal drilling, through-tubing cement packer and many other technologies, have added value to drill abandon wells.