A report from Norway’s Auditor General criticizes several aspects of the way health, safety, and the environment in the Norwegian oil and gas industry is followed up by the Petroleum Safety Authority Norway. Norway has invited companies to submit bids to use subsea reservoirs to store carbon dioxide near the country’s largest oil and gas field, Troll. Statoil To Become Equinor, Dropping'Oil' To Attract Young Talent Shareholders in Norway’s largest company, Statoil, approve the board’s proposal to drop “oil” from its name as its seeks to diversify its business and attract young talent concerned about fossil fuels’ impact on climate change. But serious personal injuries are growing, while feedback on the working environment, the HSE climate and perceived risk is moving in the wrong direction. Norwegian suppliers Framo, Maritime Partner, Norbit Aptomar, and NorLense have come together to create the Oil Spill Recovery Vessel Group to offer a complete oil-spill-response solution.
The Norwegian Petroleum Directorate has given clearance to start up facilities at the North Sea field, which straddles the line between the UK and Norwegian sectors. Production is set to begin in September. Hydroniq will deliver a hull-integrated seawater cooling system for a cable-laying vessel the Norwegian shipbuilder Vard is designing and building for Prysmian Group. Construction for the field’s second processing platform begins on the same day the Norwegian authorities approved the plan for development and operation for the biggest field development on the Norwegian continental shelf. The new deals, valued at approximately $2.9 billion over 3 years, cover services for liner hangers, downhole monitoring, and additional completions on the NCS.
The subsea operations company said its most recent campaign is the first fully unmanned offshore pipeline inspection completed “over the horizon,” surveying up to 100 km from the shore. One of the largest industrial projects in the UK in recent years, Mariner marks Equinor’s first operated field on the UK Continental Shelf. It is expected to produce 70,000 BOPD at peak rates. The Norwegian Petroleum Directorate has given clearance to start up facilities at the North Sea field, which straddles the line between the UK and Norwegian sectors. Lundin reports that the hookup and commissioning of installed facilities at the large North Sea field is progressing as planned.
Fractures can be first-order controls on fluid flow in hydrocarbon reservoirs. Understanding the characteristics of fractures such as their aperture, density, distribution, conductivity, connectivity, etc, is key for reservoir engineering and production analysis.
Well testing plays a key role in the the characterisation of fractured reservoirs, especially. New advances in the Pressure Transient Analysis (PTA) have enabled the interpretation of production data in a way where the resulting geological scenarios are in better agreement with fracture patterns observed in outcrop analogues.
Traditionally, Drill Stem Test (DST) data have been the primay source of information for well testing. However, we hypothesise that wireline conveyed tools designed for Interval Pressure Transient Testing (IPTT) could yield a more throrough description of the near-wellbore heterogeneities, including fractures.
Hence, we investigate the applicability of IPTT for characterising fractured reservoirs using detailed numerical simulations models with accurate wellbore representation to generate synthetic IPTT responses that can obtained through a next-generation wireline testing tool called SATURN. We particularly focus on cases where fractures are present in the near-wellbore region but do not intersect the wellbore. The study included parameters such as fracture densities and conductivities, distance between fractures and wellbore and the vertical extension of the fractures across geological beds.
The impact of the different fracture scenarios on the pressure transient tests was recorded as characteristic signatures on diagnostic plots (pressure derivative curves). We have called these curves "IPTT-Geotypes"; they can be used to assist the interpretation process of IPTT responses. To the best of our knowledge, this is the first time pressure derivative type curves for IPTT in fractured reservoirs are presented in the literature.
A field example of an IPTT case was analysed using the concept of geological well testing. We integrated the information from petrophysical logs and the IPTT-Geotypes to assist the calibration of a reservoir model developed to represent the geological setting of the tested reservoir interval. The results provided a sound interpretation of the reservoir geology and quantitative estimation of the matrix and fracture parameters.
The SPE Norway One Day Seminar is the key annual forum for discussion points, industry developments and technical challenges facing upstream oil and gas in the Norwegian Continental Shelf and wider E&P industry. Its highly respected technical content represents a diverse range of oil and gas disciplines and provides an excellent learning experience.
Thank you for attending the SPE Seminar. Thank you for attending the SPE Seminar. The SPE One Day Seminar is the key annual forum for discussion points, industry developments and technical challenges facing upstream oil and gas not only in the Norwegian Continental Shelf, but also the wider E&P industry. The conference's highly respected technical content represents a diverse range of oil and gas disciplines and provides an excellent learning experience. The seminar will provide scope for networking with industry colleagues, as well as an exhibition that will showcase leading organisations active within the sector.
The digital transformation of the oil and gas industry is happening right now. This session looks at how digitalisation and data sharing philosophies can change business models, as well as enable optimised operations and efficiency gains through better insight, faster decisions and optimised work processes. The progress of drilling technology is exposed widely in this section. Scientists and engineers from academia, oil companies and service companies are working together to develop new methodology and experiences. The session includes Depletion and Re-Pressurizationin the Valhall Field, Reconstruction of Pipe Movement, Optimized Trajectory and Efficient Slot Recovery, Model Parameters on Frictional Pressure Loss Uncertainty and Accuracy of Combining Overlapping Wellbore Surveys.
In recent years, the oil and gas industry has gained greater operational efficiencies and productivity by deploying advanced technologies, such as smart sensors, data analytics, artificial intelligence and machine learning — all linked via Internet of Things connectivity. This transformation is profound, but just starting. Leading offshore E&P operators envision using such applications to help drive their production costs to as low as $7 per barrel or less. A large North Sea operator among them successfully deployed a low-manned platform in the Ivar Aasen field in December 2016, operating it via redundant control rooms — one on the platform, the other onshore 1,000 kilometers away in Trondheim, Norway. In January 2019, the offshore control room operators handed over the platform's control to the onshore operators, and it is now managed exclusively from the onshore one. One particular application — remote condition monitoring of equipment — supports a proactive, more predictive condition-based maintenance program, which is helping to ensure equipment availability, maximize utilization, and find ways to improve performance. This paper will explain the use case in greater detail, including insights into how artificial intelligence and machine learning are incorporated into this operational model. Also described will be the application of a closed-loop lifecycle platform management model, using the concepts of digital twins from pre-FEED and FEED phases through construction, commissioning, and an expected lifecycle spanning 20 years of operations. It is derived from an update to a paper presented at the 2018 SPE Offshore Technology Conference (OTC) that introduced the use case in its 2017-18 operating model, but that was before the debut of the platform's exclusive monitoring of its operations by its onshore control room.
CML (Controlled Mud Level) is a dual gradient type of Managed Pressure Drilling (MPD). The CML system was developed and implemented on the Troll field to allow for reducing the annular pressures acting on the wellbore during drilling, thus allowing drilling areas weakened by faults and fractures and longer horizontal sections in the depleted normal pressured reservoirs. This paper will present a short introduction to the Troll field, a description of the system utilized, a summary of the rig integration, operations and experiences with the CML system on Troll.
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