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Journal Article
Journal: The Leading Edge
Published: 01 June 2020
The Leading Edge (2020) 39 (6): 392–400.
..., three main objectives should be considered: (1) dense spatial source and receiver locations to achieve optimum subsurface illumination and wavefield sampling; (2) coverage of the full frequency spectrum, i.e., broadband acquisition; and (3) cost efficiency. Consequently, an effort has been made...
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Journal Article
Journal: Interpretation
Published: 23 January 2020
Interpretation (2020) 8 (1): T183–T193.
... operational costs. These types of geologic conditions are present in the Krishna-Godavari Basin, where a series of horst and grabens defined by deep-seated faults and persistent high sedimentation rates through geologic time, result in the development of challenging conditions for exploratory drilling. We...
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Journal Article
Journal: Interpretation
Published: 20 December 2019
Interpretation (2020) 8 (1): B13–B33.
..., completion stages, treating pressure, and proppant delivered per stage is presented. Factors that affect completion issues, and thus operating costs and well economics, are addressed. Fifteen-day cumulative production is the only common production interval to all completed wells in the field area...
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Journal Article
Journal: Economic Geology
Published: 01 December 2019
Economic Geology (2019) 114 (8): 1555–1568.
.... To place tentative economic constraints on REE recovery from the tailings material, an analogy to the Browns Range deposit in Australia is drawn. Its technical flow sheet was used to estimate the cost for a hypothetical REE production at Chapadão. Parameters derived from SEM-based image analysis were used...
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Journal Article
Journal: Interpretation
Published: 15 October 2019
Interpretation (2019) 7 (4): SK45–SK52.
...Colin MacRitchie; Mohamed K. Zobaa Abstract Horizontal drilling and multistage fracturing designs have recently made the Wolfcamp shale horizons a highly sought-after and low-cost oil opportunity at a time of market volatility. One current challenge is that the Wolfcamp shale horizons...
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Journal Article
Published: 17 September 2019
Quarterly Journal of Engineering Geology and Hydrogeology (2020) 53 (2): 176–188.
...–160 and mean values of 70–480 US dollars per household per year. Generally, values are higher in the USA followed by Europe, and lowest in Asia. People's income is a major factor affecting values, but this does not mean that they value groundwater less. Economic valuations and cost–benefit analysis...
FIGURES
Journal Article
Journal: Geophysics
Published: 08 August 2019
Geophysics (2019) 84 (5): R655–R672.
... enormous computational cost, as well as its high memory requirements for computing the gradient of the objective function. We have tackled these problems by introducing an algorithm for low-cost sparsity-promoting least-squares migration using on-the-fly Fourier transforms. We formulate the least-squares...
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Journal Article
Published: 02 August 2019
Environmental and Engineering Geoscience (2019) 25 (3): 223–244.
... be especially dangerous in risk assessment. As a cautionary example, a 2011 study by Budzier and Flyvbjerg (2011) of 1,471 large Information Technology projects showed mean actual cost at 1.36 times mean planned cost (US$167.1 million versus $122.1 million). Worse, 16 percent of the projects ran two to eight...
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Journal Article
Journal: Interpretation
Published: 30 July 2019
Interpretation (2019) 7 (3): SF41–SF55.
..., the goal is to maximize the stimulated reservoir volume with minimal cost overhead. The compressional and shear velocities ( V P and V S , respectively) can also be used to calculate Young’s modulus, Poisson’s ratio, and other mechanical properties. In the field, sonic logs are not commonly acquired...
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Journal Article
Journal: Interpretation
Published: 17 July 2019
Interpretation (2019) 7 (3): SE189–SE200.
... of these algorithms has broadened; today, migration is a central step in the seismic data processing workflow. However, no single migration technique is suitable for all kinds of data and all styles of acquisition. There is always a compromise on the accuracy, cost, and flexibility of these algorithms. On the other...
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Journal Article
Journal: Interpretation
Published: 03 July 2019
Interpretation (2019) 7 (3): T647–T656.
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Journal Article
Journal: Interpretation
Published: 03 July 2019
Interpretation (2019) 7 (3): B33–B47.
... understand subsurface complexity relies on developing seismic stratigraphic workflows that allow very high-resolution interpretation within a cost-effective timeframe. We have developed an innovative 3D seismic interpretation workflow that combines full-volume and semi-automated horizon tracking with high...
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Journal Article
Journal: SEG Discovery
Published: 01 July 2019
SEG Discovery (2019) (118): 16–27.
..., labor, and cost-based models. Mine planning is a process and not an output; referring to a mine plan can be ambiguous, since the outputs are designs and schedules. However, a mine plan can refer to a report, including all component details, designs, schedules, etc. The level of detail required in mine...
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Journal Article
Journal: The Leading Edge
Published: 01 April 2019
The Leading Edge (2019) 38 (4): 310–312.
...Mohammed Al Duhailan; Mohammed Badri Abstract As unconventional resources continue to be the focus of many operating companies, applications of cost-efficient practices along with technological advancements in drilling and completion will continue to be key enablers for efficiency and obtaining...
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Journal Article
Journal: Geophysics
Published: 11 March 2019
Geophysics (2019) 84 (3): T109–T119.
...-marching step, determined by both the stability condition and numerical dispersion, is a key factor in the computational cost. In contrast with the widely used second-order temporal stencil, the Lax-Wendroff stencil is more cost effective because the time-marching step can be much larger. It can be proved...
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Journal Article
Published: 22 February 2019
Quarterly Journal of Engineering Geology and Hydrogeology (2019) 52 (2): 173–181.
..., cost and quality control. Quarry closure has also reduced Hong Kong's readiness to process and reuse good-quality rock generated by construction projects. To combat these issues, a detailed review of the short- and long-term aggregate supply strategies for Hong Kong was conducted, including a territory...
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Journal Article
Published: 07 February 2019
Petroleum Geoscience (2020) 26 (1): 110–125.
...Douglas Watson; Nick Schofield; Alistair Maguire; Christine Telford; Niall Mark; Stuart Archer; Jonathon Hardman Abstract The Faroe–Shetland Basin, NE Atlantic continental margin, hosts a number of important hydrocarbon fields; although deep water and narrow weather windows mean that drilling costs...
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Journal Article
Journal: SEG Discovery
Published: 01 January 2019
SEG Discovery (2019) (116): 1–22.
... to the mining industry ( Wood, 2018a ). The world is increasingly technology driven, and while it is tempting to hope that technology will reverse this trend, we argue that technology will only play a supporting role in the short to medium term, most likely by reducing cost (e.g., coiled steel tubing drilling...
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Journal Article
Published: 27 December 2018
Seismological Research Letters (2019) 90 (2A): 672–682.
... sampling and resolution, due to the limited number of installed sensors, often at large distances. A significant improvement in spatial resolution can be achieved by the use of low‐cost distributed sensors arrays, capable of recording seismic events with a dense sensors network. In this perspective...
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Journal Article
Journal: Geophysics
Published: 21 December 2018
Geophysics (2019) 84 (1): B75–B94.
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