Anyone selling something new for offshore exploration and production has to be able to answer a simple question from customers, “How can we save some money?” For Norwegian oil companies, change is coming in many forms: steel, sensors, software, and standards. A panel discussion at the 2016 OTC in Houston focused on the factors that influence deepwater developments, the scenario for the future, and the opportunities available within the industry. One key question asked was: What oil price is required to keep deepwater viable over the long term? Representatives from various national oil companies, multinational operators, service companies, and fabricators discuss the roles individual countries in the Asia Pacific region will play in the global oil market and the overall development of the region.
Intervention and workover operations can significantly affect the structural integrity and fatigue life of subsea-wellhead systems. Methodologies for wellhead-fatigue analysis have improved, but have yet to account for thermal effects along the well. As part of a project that involves the use of four artificial islands to drill and complete more than 300 extended-reach-drilling (ERD) wells in a giant offshore oil field, several completion designs have been piloted for brownfield development.
This paper discusses the first multilateral well with a Level-4 junction combined with an inflow-control device (ICD) planned, designed, and drilled in the Upper Burgan reservoir of Raudhatain field, north Kuwait. Several designs for autonomous inflow-control devices (AICDs) are available. The comparative properties and abilities of these designs are the focus of this paper. As part of a project that involves the use of four artificial islands to drill and complete more than 300 extended-reach-drilling (ERD) wells in a giant offshore oil field, several completion designs have been piloted for brownfield development.
As part of a 2-year deal, the Kreuz Glorious will help with the inspection of offshore jackets in the Arabian Sea. Kreuz will also provide personnel for project management and offshore construction. McDermott announced a letter of award for a contract from Reliance Industries for the deepwater KG-D6 subsea field development in the Krishna Godavari Basin.
When panels in an instrument equipment shelter kept tripping and the occasional smell of H2S led to an investigation of the rationale. Although a rare occurrence, this paper presents a strategy for prevention through careful site selection. A wide range of corrosive elements and compounds from a variety of crudes has led to a renewed industry focus on corrosion and the effects it has on pipelines and vessels. Through a range of experiments the authors demonstrate that small amount of H2S can be beneficial in reducing corrosion in 3% Cr steel. Offshore production systems can be impacted negatively by numerous problems attributed to bacterial activity, associated hydrogen sulfide and biogenic iron sulfides, and mercaptan production.
A computational fluid dynamics model is proposed to analyze the effect of hydrate flow in pipelines using multiphase-flow-modeling techniques. The results will identify the cause of pipeline failure, regions of maximum stress in the pipeline, and plastic deformation of the pipeline. The 9th International Conference on Gas Hydrates featured discussions on key advancements in flow assurance, including the concept of risk management and anti-agglomerates being applicable strategies in transient operations. A BP flow assurance manager explains a methodology for determining and mitigating flow assurance risks. A BP flow assurance engineer discusses the shift in hydrate management strategy from complete avoidance to risk mitigation for an offshore dry tree facility.
Offshore project execution enhancement ideas are highlighted for debottlenecking, gas-hydrate-induced pipeline vibration, and the design of subsea systems for efficient startup. Water debottlenecking increased oil production by 80% and reduced the infield transfer volume by 62%. Operators are increasingly using existing offshore infrastructure for asset life extension, and developing new marginal stranded fields rather than develop new large greenfields. Subsea processing is an enabling technology in this goal. Lessons learned in debottlenecking a “dirty” triethylene glycol contactor at the ExxonMobil Upstream Research Company’s LaBarge Black Canyon Facility in Wyoming highlight the results of work performed between 2001 and 2004.
In Part II of this series, Antonio Pinto, senior advisor, and Celso Branco, reservoir engineer, of Petrobras discuss advances in deep offshore drilling related to the enormous Santos pre-salt basin fields of Brazil. Exploiting deepwater resources in a cost-effective manner presents a number of challenges for the industry, In the deepwater Brazilian presalt, research and development may provide solutions. Technology has allowed industry to develop in ever deeper water to successfully add to energy supplies, despite the high capital requirements. Petrobras has had great success in overcoming enormous technological challenges in deep water during the last decade, but challenges remain. Luke Eaton of ConocoPhillips, Darryl Herrington of LLOG Exploration, and John Thorogood, drilling global consultant provide their perspectives on deepwater technologies.
In Part II of this series, Antonio Pinto, senior advisor, and Celso Branco, reservoir engineer, of Petrobras discuss advances in deep offshore drilling related to the enormous Santos pre-salt basin fields of Brazil. Exploiting deepwater resources in a cost-effective manner presents a number of challenges for the industry, In the deepwater Brazilian presalt, research and development may provide solutions.
The burgeoning population of millennials in oil and gas and diversified, global workforce means more engagement with social media will be necessary. Downhole drilling dynamics tools and software can assist in understanding the downhole environment, providing a meaningful avenue for drilling optimization. With rig rates running upwards of a million dollars a day for some operations, shaving even a few minutes off the drilling time can result in tens of thousands of dollars in savings. One of the fundamental ways a drilling engineer can achieve this is through selection of a proper drill bit. Underbalanced coiled tubing drilling has continually advanced since the first trials in the 1990s but remains a relatively niche drilling technology.