DeAnn Craig, the first woman to hold the position of SPE President and who also held the top role at... Steve Holditch, who served as SPE President in 2002 and was a fixture of the Texas A&M Universit... Whiting Petroleum appointed Correne S. Loeffler as chief financial officer. He has more than 20 years of experience in the gl... ROVOP, a subsea robotics company, promoted David Lamont as CEO. He was previously the chairman of th... Jud Bailey was appointed vice president of investor relations at BHGE, effective August. Occidental Petroleum elected Robert “Bob” M. Shearer to its board of directors. Margaret K. Dorman was appointed to the board of directors at Range Resources, which was mutually ag... Extraction Oil & Gas announced that former US Commerce Secretary Donald L. Evans has resigned fr... Halcón Resources appointed Richard Little as CEO.
By International Petroleum Technology Conference (IPTC) Monday, 25 March 0900-1600 hours Instructors: Olivier Dubrule and Lukas Mosser, Imperial College London Deep Learning (DL) is already bringing game-changing applications to the petroleum industry, and this is certainly the beginning of an enduring trend. Many petroleum engineers and geoscientists are interested to know more about DL but are not sure where to start. This one-day course aims to provide this introduction. The first half of the course presents the formalism of Logistic Regression, Neural Networks and Convolutional Neural Networks and some of their applications. Much of the standard terminology used in DL applications is also presented. In the afternoon, the online environment associated with DL is discussed, from Python libraries to software repositories, including useful websites and big datasets. The last part of the course is spent discussing the most promising subsurface applications of DL.
LLOG Exploration Company awarded McDermott International a contract valued at $1 million to $50 million for deepwater subsea pipeline tiebacks and structures from the Stonefly development to the Ram Powell platform, located approximately 140 miles southeast of New Orleans. The scope of work includes project management, installation engineering, subsea structure and spoolbase stalk fabrication, and subsea installation of the subsea infrastructure to support a two-well subsea tieback from the Stonefly development site to the Ram Powell platform via a 60,000-ft, 6-in.-diameter McDermott will also design, fabricate, and install a steel catenary riser, a pipeline end manifold, and two in-line sleds. The Stonefly development includes the Viosca Knoll 999 area where the contractor is scheduled to use its 50-acre spoolbase in Gulfport, Mississippi, for fabrication and reeled solutions. The subsea tiebacks and structures are scheduled to be installed using McDermott’s North Ocean 105 vessel in Q3 2019.
Last year, the company discovered oil in multiple horizons at the Wildling-2 well and sidetrack north of the field. BHP Billiton lost billions during its foray into US shale, but that doesn’t mean it has soured on oil and gas. Since the Melbourne-based firm announced in July the sales of its assets in the Permian Basin, Eagle Ford Shale, and Haynesville Shale, many have wondered if it would leave oil and gas altogether. But Skip York, BHP head of strategy and market intelligence, petroleum, assures that “BHP is still very bullish on the petroleum story as a natural resources company.” That’s because there will continue to be value in conventional assets driven by natural declines and the oil supply-demand imbalance, he explained.
The paper reviews the advantages of exploiting the deepwater phenomena of the early and progressive growth of the fracture gradient immediately below the mudline in determining casing seat setting depths. This would improve the reliability, well integrity and economics of deepwater wells. This method allows the subsea structural casing string, the first string in any deepwater well design, to have a dual purpose of supporting the required subsea axial loads while providing sufficient shoe strength for the subsequent casing string. This allows subsequent casing seats to be set deeper than current practice reducing the number of casing strings to attain well programmed depths.
The conventional deepwater well design uses the criteria of the structural casing primarily to support the anticipated axial load of the subsequent string(s) for its setting depth. The practice is to jet the structural casing to depths of 200 to 300 ft below seafloor. This results in insufficient leak-off shoe strength to adequately mitigate any shallow hazards that may exist such as shallow gas, near-surface active faulting, shallow water flows and gas hydrates. Therefore, a casing string is generally set just above every identified hazard, adding rig time and increasing the number of casing strings in the well design. This can be detrimental to the well objectives by creating high equivalent circulating densities (ECD) in the lower well sections. These ECD's in narrow drilling windows can prevent continued drilling, or at a minimum cause significant lost time. This situation is a typical problem in the deepwater drilling environment.
The deepwater drilling industry has had to recognize the shortcomings in existing well designs. Many of the principles and practices used in deepwater have been adopted and adapted from shallow water experience with various level of success. Leading GOM drilling professionals have noted that deepwater well designs and execution practices need to be challenged, especially in light of the BP Macondo incident, to drive for improved well integrity, and of course economics.
The proposed deepwater well design method could replace the practice of "jetting" in the structural casing with drilling-in the casing to about 1500 ft below seafloor. This could be done without any modification to existing wellhead designs. The result would be: Increased well integrity: In the riserless section, mitigating shallow hazards with stronger casing shoes. Ensures structural casing is placed at optimum depth to provide maximum bending moment resistance. Below HPWH conductor, increase the drilling operating windows (larger annuli). Decreased well cost: Reduce at least one casing string. Minimize trouble time with narrow drilling windows and "junked" wells. Increased well objective reliability: Less casings and larger holes below the HPWH and its conductor allow additional casing strings for geological or mechanical sidetracks. Increases drilling operating window to reach programmed TD.
Increased well integrity:
In the riserless section, mitigating shallow hazards with stronger casing shoes.
Ensures structural casing is placed at optimum depth to provide maximum bending moment resistance.
Below HPWH conductor, increase the drilling operating windows (larger annuli).
Decreased well cost:
Reduce at least one casing string.
Minimize trouble time with narrow drilling windows and "junked" wells.
Increased well objective reliability:
Less casings and larger holes below the HPWH and its conductor allow additional casing strings for geological or mechanical sidetracks.
Increases drilling operating window to reach programmed TD.
The concerns surrounding the well integrity of deepwater wells with both the existing well design and the need for deepwater projects to reduce their costs to compete for investment funding has become the force for change.
Sediment profile imaging (SPI) technology characterizes
The SPI camera works like an inverted periscope and obtains an undisturbed 21x15-cm cross-sectional image of the upper sediment column. The camera is internally powered and can be deployed rapidly from a standard winch in depths to 4,000 m. Many stations can be sampled in a single day by "pogo-sticking" across a survey area. Sediment grain size, penetration depth, surface boundary roughness, natural and anthropogenic depositional layers, depth of the oxidized surface sediment layer, maximum biogenic mixing depth, and infaunal successional stage can be directly measured at sea or immediately following the cruise. Final SPI data sets can be provided within a few weeks of the survey.
Details on the features measured in SPI images and the underlying interpretive paradigms are presented. To standardize the SPI data generation process, Integral Consulting Inc. has developed 1) a semiautomated image analysis platform, and 2) a SPI data-specific database architecture that allows both numerical and non-numerical metrics to be incorporated into a standard database structure. An integrated, software-based SPI analysis platform has been developed that imports image files and metadata and provides a graphical user interface. The software automatically stores the data, which can then be reviewed for quality assurance, plotted, statistically analyzed, and mapped or exported to other platforms (e.g., Esri ArcGIS©) for further evaluation. Image processing algorithms have been developed using a combination of open-source and commercially available software packages (e.g., MATLAB® and OpenCV) to automatically quantify key parameters.
SPI technology’s underutilization in the oil and gas industry may be in part due to a lack of standardization in the measurement of basic features in SPI images. A primary objective of this work is to develop a streamlined, standardized, and transparent process for generating and managing SPI data.
Duncan, Tim (Talos Energy LLC) | Braathen, Bjørn Inge (Statoil) | McCormack, Niall (BHP Billiton Petroleum) | Stauble, Martin (Shell) | Campbell, Lorna (ExxonMobil) | Cizek, Mark (Williams) | Rasmussen, Stein (SBM Offshore) | Khurana, Sandeep (Granherne, A KBR Company) | Wilson, Julie (Wood Mackenzie)
The Gulf of Mexico (GOM) has gone through many waves of exploration and development, each time reinventing and pushing the boundaries. Finally, the realization of crossing boundaries and combining United States and Mexico GOM into "One GOM" commercially and technically is within reach. One GOM resource base - discovered remaining to be produced and prospective - is reaching 50 billion barrels of oil equivalent (BBOE). New plays in the U.S. GOM and the opening of the Mexican GOM, coupled with innovative technological and commercial models and increasing interest from the investment community, are poised to drive value and keep this resource base and production growing further.
Accurate prediction of roll damping is of utmost importance in estimating the roll motion of ships and other ship-shaped floating structures such as floating, production, storage and offloading (FPSO) and floating liquefied natural gas (FLNG) vessels. Roll damping is non-linear in nature and consists of several components including viscous damping which has been found to be highly dependent on flow separation patterns around the vessel. Industry practice of estimating roll damping by means of model testing and theoretical formulae has not always been reliable in estimating viscous damping due to limitations in both model tests and theoretical formulae. It is the objective of this study to use Computational Fluid Dynamics (CFD) methodology to predict roll damping and roll motion accurately for the concept design of a new-build barge-shaped FPSO vessel with bilge keels.
In this study, assessment of roll damping is based on prescribed sinusoidal roll motions applied to the vessel in two-dimensional and three-dimensional CFD simulations. Validation of the CFD prediction is performed using published experimental results. From the CFD simulations, roll damping of a barge-shaped FPSO vessel is found to vary considerably with changes in the bilge corner shapes and bilge keel dimensions. Roll damping increases with bilge keel height and roll amplitude. Results from two-dimensional and three-dimensional simulations show differences which may be attributed to the length of the bilge keels and the bow and stern effect. From this study, the optimum bilge keel configuration for application of this new-build barge-shaped FPSO vessel in moderate environmental conditions is identified in the early design stage.
Michel, R. (Alcatel Submarine Networks) | Bouvart, E. (Alcatel Submarine Networks) | Courtois, O. (Alcatel Submarine Networks) | Genot, M. (Alcatel Submarine Networks) | Huchet, G. (Alcatel Submarine Networks) | Lecroart, A. (Alcatel Submarine Networks)
Subsea controls architectures have been traditionally based on large size project-specific umbilicals integrating hydraulics, data, power and chemicals. Tieback length and power consumption drive the dimensioning of umbilical cross-section.
The submarine telecom industry has an extensive track record of highly reliable, long reach, standardized solutions for DC powering and data transport.
An alternative cost effective subsea control infrastructure solution has been developed leveraging on the submarine telecom industry experience, based on reliable super-structural and standardized DC subsea power and optical fiber communication cable network, compatible with existing brown fields and future green fields subsea control systems, so-called DC/FO solution.
This innovative solution offers a number of advantages inspired from the telecom industry: Standardization – the same standard cross section can be used regardless of tie back length or power consumption demand; Reparability and Extendibility – The cable and its end terminations can be lifted to surface for repairs or extensions at sea with standardized jointing technology, simplifying the tie-back of new prospects and enabling phased development; Open platform – electrical power and communication interfaces can be connected to any SPS supplier equipment; Virtually unlimited reach within Oil and Gas fields – the system is dimensioned to serve the longest tie backs currently contemplated by the industry; Large power supply capability.
This solution is an enabler for new applications such as AUV recharge or E-Field sensing. On longer term, all-Electric trees can be powered through DC/FO solution, allowing further downsizing and cost reduction of legacy umbilical cross-section with the removal of hydraulic tubes.