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Keywords: interpretation
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Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 62 (02): 210–226.
Paper Number: SPWLA-2021-v62n2a5
Published: 01 April 2021
... upstream oil & gas contact identication pumpout stationary measurement acquisition structural geology oil zone norway high-porosity sandstone formation fluid characterization petrophysicist halliburton interpretation 210 PETROPHYSICS April 2021 PETROPHYSICS, VOL. 62, NO. 2 (APRIL 2021...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 62 (01): 73–88.
Paper Number: SPWLA-2021-v62n1a5
Published: 01 February 2021
...Ting Li; Nicholas Drinkwater; Karen Whittlesey; Patrick Condon In this paper, we examine fluids interpretation techniques in a prolific oil field in offshore West Africa. A sourceless logging program, consisting of logging-while-drilling (LWD) nuclear magnetic resonance (NMR), resistivity, and...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 62 (01): 122–134.
Paper Number: SPWLA-2021-v62n1a8
Published: 01 February 2021
...-lambda using mineralogy, and other variants, have often been used, with moderate success. In addition to permeability, the determination of the uncertainties, both epistemic (model) and aleatoric (data), are important for interpreting variations in the predictions of the reservoir models. In this paper...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 61 (06): 549–569.
Paper Number: SPWLA-2020-v61n6a2
Published: 01 December 2020
... and hydrocarbons. The direct use of chlorine provides a more reliable basis for salinity interpretation after isolating its formation signal. We partition the borehole and formation components of chlorine via two unique spectral standards. The contrast between the two standards arises from differences...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 61 (06): 585–599.
Paper Number: SPWLA-2020-v61n6a4
Published: 01 December 2020
... compare the raw data and interpreted results from the three pulsed-neutron tools. Consequently, a comparison from all the tools was made to the current understanding of the reservoir assessed. The points from these comparisons will then show which tools are favored over the rest. 11 9 2020 20 9...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 61 (01): 38–71.
Paper Number: SPWLA-2020-v61n1a1
Published: 01 February 2020
... models, discuss and illustrate some workflows that provide quality control (QC) of Russian logs on the basis of radial 1D modeling, address environmental corrections, and introduce standard interpretation of Russian logs. We also briefly mention the advanced processing tools, such as 2D inversion of BKZ...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 60 (06): 755–769.
Paper Number: SPWLA-2019-v60n6a4
Published: 01 December 2019
... accepted laboratory methods, assumptions used to interpret those data and more broadly, due to increased relative uncertainty associated with tight, low-porosity formations. For example, crushing core samples, which enhances fluid extraction in tight rocks, causes systematic fluid losses in the case of...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 60 (06): 854–871.
Paper Number: SPWLA-2019-v60n6a9
Published: 01 December 2019
...Haojie Pan; Hongbing Li; Yan Zhang; Jingyi Chen; Shengjuan Cai; Chao Geng Accurate interpretation of the petrophysical properties of gas-hydrate-bearing sediments, such as porosity, hydrate saturation and clay content, are of great importance for reservoir characterization and resource evaluation...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 60 (04): 469–479.
Paper Number: SPWLA-2019-v60n4a1
Published: 01 August 2019
...Seth Brazell; Alex Bayeh; Michael Ashby; Darrin Burton The process of well-log correlation requires significant time and expertise from the interpreter, is often subjective and can be a bottleneck to many subsurface characterization workflows. Algorithmic approaches to well-to-well correlation...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 60 (04): 507–513.
Paper Number: SPWLA-2019-v60n4a4
Published: 01 August 2019
.... The interpretation is fully auditable, and therefore suitable to be part of a standard protocol. 1 8 2019 1 8 2019 2019. Society of Petrophysicists & Well Log Analysts core analysis full model wettability index simulated response well logging derive wettability index...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 60 (02): 208–227.
Paper Number: SPWLA-2019-v60n2t2
Published: 01 April 2019
... revolutionized log interpretation. There has always been a problem with the model in terms of its "explainability". That is, it cannot be derived in any straightforward way from accepted first principles of physics. It does not contradict any first principle, but neither does it seem to follow ineluctably from...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 60 (02): 335–347.
Paper Number: SPWLA-2019-v60n2a10
Published: 01 April 2019
... with the desired receiver array. The image is then interpreted for features, which is often subjective in nature and does not directly provide quantitative results for the discrete reflections. The technique presented here, besides providing appropriate parameter values for the migration workflow...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 59 (05): 633–648.
Paper Number: SPWLA-2018-v59n5a5
Published: 01 October 2018
...Morten Kristensen; Nikita Chugunov; Koksal Cig; Richard Jackson ABSTRACT The increasing complexity of downhole fluid sampling and the need for optimizing the sampling process call for a model-based approach in planning and interpretation applications. Efficient planning of fluid sampling requires...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 59 (05): 703–718.
Paper Number: SPWLA-2018-v59n5a9
Published: 01 October 2018
...Chelsea Newgord; Artur Posenato Garcia; Ameneh Rostami; Zoya Heidari ABSTRACT Interpretation of electrical resistivity measurements for assessing hydrocarbon saturation in mixed-wet and hydrocarbon-wet rocks often requires extensive recalibrations of resistivity models. In these conventional...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 59 (05): 588–605.
Paper Number: SPWLA-2018-v59n5a2
Published: 01 October 2018
... provides a matrix-adjustment to porosity logs giving a direct measurement of porosity, without the need for subjective assumptions that are needed in standard porosity log interpretations of organic-rich formations. In another, DRIFTS estimates anisotropic elastic and stress profiles along a lateral after...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 59 (05): 617–632.
Paper Number: SPWLA-2018-v59n5a4
Published: 01 October 2018
... consequently makes interpretation challenging. The problem of estimating the number of sources Nc in Eq. 1 remains an open research issue. This problem is equivalent to model-order selection in the ¿ eld of signal processing and is a well-known dif¿ cult problem. Today, this parameter is often chosen by trial...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 59 (04): 457–488.
Paper Number: SPWLA-2018-v59n4a3
Published: 01 August 2018
... investments made to perform downhole measurements, results are often disappointing and interpretation affected by a great deal of uncertainty. A new instrumentation technology using microelectromechanical systems (MEMS) as well as new interpretation methods is offering new perspectives to this domain. In this...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 59 (04): 496–510.
Paper Number: SPWLA-2018-v59n4a5
Published: 01 August 2018
... fluid phases. We will describe the methods used to improve quantitative interpretation from distributed sensing, especially the use of phase-coherent DAS for quantitative measurement of sound speed and its use in analysis of flow velocity and fluid phase. While early DAS systems were previously limited...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 59 (04): 511–527.
Paper Number: SPWLA-2018-v59n4a6
Published: 01 August 2018
... helped improve our understanding of well and reservoir dynamics and subsequently, make important business decisions at different stages of field life. The paper also discusses new methods developed for automated data streaming, visualization and interpretation with specific reference to (DFO) sensor data...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 59 (02): 185–200.
Paper Number: SPWLA-2018-v59n2a5
Published: 01 April 2018
... sedimentary rocks, provides an additional dimension to petrophysical evaluation over broad frequency up to about 1 GHz. However, the interpretation of dielectric dispersion can be particularly difficult in organic-shale reservoirs, often due to a variety of polarization mechanisms and considerable...

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