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The phase-shift-plus-correction method

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Proceedings Papers

Paper presented at the International Oil and Gas Conference and Exhibition in China, November 7–10, 2000
Paper Number: SPE-64741-MS
... iteration are used to transform the residual time shifts to residual statics of every shot and receiver. Finally, estimated statics are combined with datum correction values as a final statics. The fulfillment course of the method. Pickup first break of survey lines. In reasonable offset scope, an...
Proceedings Papers

Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-2295
... number of methods have been proposed to address this issue, including: phase-shift plus interpolation (PSPI), split-step and Fourier finite difference. Generally, all of these are based upon the idea of migrating with a number of reference velocities, and then applying some form of correction to improve...
Journal Articles
Journal: SPE Journal
SPE Journal 26 (02): 591–609.
Paper Number: SPE-204476-PA
Published: 14 April 2021
... ( Réthoré et al. 2008 ; Mohammadnejad and Khoei 2013a ). A similar framework for a single fluid phase ( Mohammadnejad and Khoei 2013b ) was also used to simulate the interaction of hydraulic fractures and the existing natural fractures ( Khoei et al. 2018 ). Note that in the above works, the fluid flow...
Journal Articles
Journal: SPE Journal
SPE Journal 23 (05): 1496–1517.
Paper Number: SPE-182639-PA
Published: 11 May 2018
... ) = [ D m 1 ( j ) , D m 2 ( j ) , … , D m N m ( j ) ] T denote the parameter shift with D m i ( j ) = m i ( j ) − m i ( ∗ ) and D y ( j ) = [ D y 1 ( j ) , D y 2 ( j ) , … , D y...
Proceedings Papers

Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-0104
... image the reflector in a TI medium, it is important to design an anisotropic wavefield-extrapolation method. Implicit methods (Ristow and Ruhl, 1997), phase-shift plus inter- polation (PSPI) (Rousseau, 1997), non-stationary phase-shift (Fer- guson and Margrave, 1998), explicit operators (Uzcategui, 1995...
Journal Articles
Journal: SPE Journal
SPE Journal 9 (02): 186–192.
Paper Number: SPE-88364-PA
Published: 01 June 2004
... may therefore be developed to primarily provide correct phase boundaries and phase amounts. With that in place, the volume shift parameter can be used to correct for any devia- tions between the actual phase densities and those simulated with the EOS with no volume correction. The Peneloux volume...
Proceedings Papers

Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-2290
..., transversely isotropic media with the phase-shift-plus-interpolation method: 67th Annual International Meeting, SEG, Expanded Abstracts, 1703 1706. Shan, G., 2006, Optimized implicit finite-difference migration for VTI media: 76th Annual International Meeting, SEG, Expanded Abstracts, 2367 2371. Shan, G., and...
Journal Articles
SPE Reservoir Evaluation & Engineering 23 (03): 0811–0823.
Paper Number: SPE-198906-PA
Published: 13 August 2020
... the timing of widespread fracture‐filling phases such as calcite, anhydrite, and dolomite that lack readily measurable textures or chemical signatures that track the relative timing. Developments in scanning electron microscopy-cathodoluminescence along with other analysis methods (Ukar and Laubach...
Proceedings Papers

Paper presented at the CORROSION 2021, April 19–30, 2021
Paper Number: NACE-2021-16283
... calculations of the aqueous phase. MSE-SRK model was used. It calculates the chemical potentials in the aqueous phase by the combination of the Helgeson-Kirkham-Flowers (HKF) equation of state for standard-state properties and the MSE activity coefficient model for solution nonideality. The Soave-Redlich-Kwong...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 29–October 2, 2002
Paper Number: SPE-77385-MS
... phase compositions. To apply a cubic equation of state with volume shift parameter, a critical temperature (Tc), a critical pressure (Pc), an acentric factor (w) and a volume shift parameter (c) must be assigned to each component or pseudo- component of the actual fluid. A standard compositional...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-196119-MS
... additional variables are assigned to these blocks. The adjoint variables associated with pressure shifts in the additional coarse blocks are assumed to resemble an average of the adjoint variables associated with pressure shifts in the sub-blocks, since pressure is an intensive property. The adjoint...
Proceedings Papers

Paper presented at the SPE Reservoir Characterisation and Simulation Conference and Exhibition, September 17–19, 2019
Paper Number: SPE-196705-MS
... is derived from the FWL depth. With the tilted FWL, the FWL depth value varies for every grid cell. This would mean that there is a vertical shift in the saturation height function for every grid cell with a different FWL depth value. If the traditional saturation calculation methods are used in the...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, March 23–April 1, 2021
Paper Number: IPTC-21491-MS
.... Condensate is defined as a low-density, high-API gravity liquid hydrocarbon phase that occurs in association with natural gas ( Ayub & Ramadan, 2019 ). Figure 1 below shows a typical phase envelope of the condensate. Condensate is formed when the reservoir pressure falls below the dewpoint pressure...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191458-MS
... alignment between the tool internals and the side port connection on the sub. A critical time during the operational sequence occurs when the diverter line (flowline that installs into the sub side port) is installed, and fluid is flowing through it. During this phase of operation, it is important to...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, December 6–9, 2015
Paper Number: IPTC-18305-MS
... multiples can have good resolution comparable to the surface seismic image, with better signal to noise ratio especially for the shallower reflectors. The VSP data is true amplitude, zero-phase, and perfectly tied in depth and in time. In very deep water, the seafloor-sea surface multiple is completely...
Journal Articles
Journal of Ship Production and Design 34 (01): 72–83.
Paper Number: SNAME-JSPD-2018-34-1-72
Published: 01 February 2018
... value robustness. 4. Case study The case study centers on the design of an OCV, following the RSC method. The information gathering phase was in- formed by interviews with decision-makers from a real ship design project, and a retrospective Accelerated Business De- velopment process. This process is...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 20–22, 2020
Paper Number: URTEC-2020-2878-MS
... decisions. During the initial phase of exploration, an appraisal of hydrocarbons in place and the recoverable resources is very crucial in determining whether to advance to field development. During the initial phase of development, surface facilities and sales contracts are quantified on the basis of...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2998399
... arrow points out scattering data that will be removed (replaced with zeros). The black arrow indicates removing of negative polarity, improving data con- sistency. These noises cause diffracted artifacts in stacking. The red arrow shows the direction of shifting smearing sig- nals downward to the new...
Proceedings Papers

Paper presented at the OTC Brasil, October 24–26, 2017
Paper Number: OTC-28137-MS
... via a flexible riser, which connects into the Petrobras gas export system. The bellmouth change-out operations consisted of replacing the bellmouths of each of the 8 production risers. The paper will focus on engineering design and offshore operation phases to implement the bellmouth change-out in a...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-043
... research could be focused on creating a two-phase model for MPS method. b) In the two-dimensional simulation, the wave-induced forces and pressure distribution on the bottom become more complicated owing to the deformation of the plate. The numerical result shows that it takes more time for water to...

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