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Keywords: database
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Journal Articles
Petrophysics 63 (04): 534–548.
Paper Number: SPWLA-2022-v63n4a4
Published: 02 August 2022
... tools, for a large set of formation realizations, are calculated only once and then stored with the realizations in a database. Thereafter, only this database is used for the interpretation of real well logs. The method is transparent because it entirely relies on selecting formation realizations...
Journal Articles
Petrophysics 63 (01): 35–60.
Paper Number: SPWLA-2022-v63n1a3
Published: 01 February 2022
... practices and implementations using machine learning (ML) and automation. This will enable geoscientists to explore and exploit vast amounts of data quickly and efficiently. To address these current industry challenges, we propose a pilot well-log database in HDF5 (Hierarchical Data Format version 5) format...
Journal Articles
Petrophysics 61 (06): 549–569.
Paper Number: SPWLA-2020-v61n6a2
Published: 01 December 2020
... chlorine drilling fluid property upstream oil & gas gamma ray database chlorine reservoir surveillance drilling fluids and materials drilling fluid formulation chlorine concentration concentration salinity porosity correction december 2020 spectroscopy enable water salinity...
Journal Articles
Petrophysics 61 (06): 570–584.
Paper Number: SPWLA-2020-v61n6a3
Published: 01 December 2020
... black curve log analysis background capture fy2w required correction term well logging raw measurement database elemental weight fraction fraction december 2020 carbon correction term petrophysics december 2020 new method dry-weight fraction spectroscopy tool 570 PETROPHYSICS December...
Journal Articles
Petrophysics 58 (02): 81–96.
Paper Number: SPWLA-2017-v58n2a1
Published: 01 April 2017
... relationships in the data without any a-priori information. The NMR T 1 - T 2 data in an entire logged interval are arranged in a database matrix and subsequently resolved as a product of two non-negative matrices using an automatic feature extraction technique. The first matrix contains the T 1 - T 2...
Journal Articles
Petrophysics 55 (03): 219–228.
Paper Number: SPWLA-2014-v55n3a2
Published: 01 June 2014
... that the new correction is essential for obtaining an accurate log of formation TOC when the borehole contains organic carbon and has variable size. 1 6 2014 1 6 2014 2014. Society of Petrophysicists & Well Log Analysts well logging accuracy database Upstream Oil & Gas...
Journal Articles
Petrophysics 54 (05): 439–456.
Paper Number: SPWLA-2013-v54n5-A3
Published: 01 October 2013
... of an NMR magnet with a low static magnetic-field gradient, a radio-frequency (RF) antenna, and a pair of pulsed-field-gradient (PFG) coils used for NMR diffusion measurements. The new system was used to acquire a database of hundreds of NMR and optics measurements at different temperatures and pressures...
Journal Articles
Petrophysics 53 (04): 256–271.
Paper Number: SPWLA-2012-v53n4a1
Published: 01 August 2012
... for quantitative predictions of live-oil properties from NMR measurements. The technique assumes that the physics connecting NMR measurements to oil properties is implicitly contained within a database of NMR and fluid-property measurements made on a representative suite of live oils. The input measurements...
Journal Articles
Petrophysics 46 (03).
Paper Number: SPWLA-2005-v46n3a3
Published: 01 May 2005
... fluid saturation gas saturation change Symposium Transaction june 2005 well logging saturation change monitor well database quantitative fluid saturation Issues with Long-Term Cased-Hole Quantitative Fluid Saturation Monitoring 1 Dale E. Fitz 2 INTRODUCTION The subject of this paper...
Journal Articles
Petrophysics 45 (06).
Paper Number: SPWLA-2004-v45n6a2
Published: 01 November 2004
... shaly. It is not significantly impacted by low-salinity effects for most reservoir rocks. A key element of the approach is that the pairs of electrolyte conductivities do not have to be the same for each sample. This is especially useful where a database covers several generations of core analysis...
Journal Articles
Petrophysics 41 (04).
Paper Number: SPWLA-2000-v41n4a2
Published: 01 July 2000
... concerned with the petroleum industry. It is an object-oriented model that utilizes multiple inheritance. Information is retrieved from the database by Standard Query Language queries. The logical structure is represented using Universal Modeling Language. We describe the entities needed to understand log...
Journal Articles
Petrophysics 39 (04).
Paper Number: SPWLA-1998-v39n4a2
Published: 01 July 1998
... porosity range prediction sandstone unified model acoustic velocity database porosity systematic equation consolidation porosity moduli Vernik unconsolidated sand arenite grain-supported sandstone Acoustic Velocity and Porosity Systematics in Siliciclastics Lev Vernik ARC0 Exploration...
Journal Articles
Petrophysics 36 (06).
Paper Number: SPWLA-1995-v36n6a3
Published: 01 November 1995
... files. LIS was chosen because of its flexibility and dominance in the log data industry. No attempt is made to organize the files on the storage media such as by tape or by well; this task is carried out through an indexing and database management system. Indexing the large volumes of data is automated...

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