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Induced-current dipole moment per unit volume

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Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 42 (06).
Paper Number: SPWLA-2001-v42n6a2
Published: 01 November 2001
... induction sonde geometry consisting of coaxial source and receiver coils, eddy currents induced by the sonde circulate horizontally in the formation, in planes per- pendicular to the borehole axis. Thus, the induction log records the effects of the macroscopic horizontal conductiv- ity of the formation...
Proceedings Papers

Paper presented at the 2010 SEG Annual Meeting, October 17–22, 2010
Paper Number: SEG-2010-0650
... time constant, tk , proportional to its conductivity. Each induced magnetic dipole inherits the orientation of the primary field. Consequently, the induced vortex currents are static and current diffusion cannot be simulated. For this reason a continuous background is introduced. The resistive limit...
Proceedings Papers

Paper presented at the 2007 SEG Annual Meeting, September 23–28, 2007
Paper Number: SEG-2007-0648
... constant transmitter current. Such systems have been applied successfully in geophysical exploration, where both transmitter and receiver reside on the surface, but have not been deployed from within a borehole. Indeed, the confinement of a borehole severely restricts the electromagnetic moments of both...
Proceedings Papers

Paper presented at the SPWLA 58th Annual Logging Symposium, June 17–21, 2017
Paper Number: SPWLA-2017-A
... within "like rock" groupings, yielding higher perforation efficiency during stimulation. However, the economic and operational burden to collect this data often prevents it from being collected regularly. Current industry practice is to calculate these rock mechanical properties from dipole sonic logs...
Journal Articles
SPE Production & Operations 35 (02): 255–271.
Paper Number: SPE-197048-PA
Published: 14 May 2020
...‐permeability region, as well as the SRV, drainage volume, hydraulic diffusivity, and permeability. Microseismic events that are located outside the microseismic‐front curve in at least one direction, either horizontal or vertical, are considered to be independent of the current fracturing stage because of...
Proceedings Papers

Paper presented at the SPWLA 62nd Annual Logging Symposium, May 17–20, 2021
Paper Number: SPWLA-2021-0044
... geological formations are Lajas, which is already a known tight gas producer in the Neuquén basin, and the less known overlaying Punta Rosada formation, which is the main objective of the current work. Punta Rosada presents a diverse lithology, including shaly intervals separating multiple stacked reservoirs...
Proceedings Papers

Paper presented at the SPWLA 57th Annual Logging Symposium, June 25–29, 2016
Paper Number: SPWLA-2016-Z
... constitute magnetic dipoles as transmitters and receivers. The oscillating magnetic field from the transmitter induces an electric field in the surrounding conductive formation. Following Ohm s law, this electric field generates induced current loops with their own, secondary magnetic field. The receivers...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 9–12, 2020
Paper Number: SPE-203374-MS
... Unconventional resources are an important part of current and future hydrocarbon demand ( ExxonMobil, 2019 ). Because of marginal economics, efficiently and effectively developing unconventional reservoirs (UR) such as organic rich mudstones (e.g. Barnett), hybrid sequences (e.g. Wolfcamp, Eagle Ford), or tight...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 9–12, 2020
Paper Number: SPE-203374-MS
... Unconventional resources are an important part of current and future hydrocarbon demand ( ExxonMobil, 2019 ). Because of marginal economics, efficiently and effectively developing unconventional reservoirs (UR) such as organic rich mudstones (e.g. Barnett), hybrid sequences (e.g. Wolfcamp, Eagle Ford), or tight...
Proceedings Papers

Paper presented at the SPE Middle East Oil and Gas Show and Conference, March 18–21, 2019
Paper Number: SPE-194866-MS
... values of 10, 4 and 2, respectively. For the current paper, the following graphical tools were used to determine the flow units: Fig. 06 presented workflows would be recommended for this particular complex reservoir in order to advance complex reservoir characterizations, optimize completion...
Journal Articles
Journal: SPE Journal
SPE Journal 26 (01): 435–447.
Paper Number: SPE-201475-PA
Published: 10 February 2021
... gather there. Current research shows that shale adsorption is generally hypothesized as a physical adsorption (Zuo et al. 2014 ; Yu et al. 2015 ). The adsorption force field is a Van der Waals force (including a dispersive force and induced force), and the hydrogen bond and chemical bond forces are...
Proceedings Papers

Paper presented at the International Thermal Operations and Heavy Oil Symposium, October 20–23, 2008
Paper Number: SPE-117253-MS
... displace the oil, thereby improving the efficiency in terms of produced barrels of oil per unit volume of water injected as steam, and it also improves the ultimate recovery rate. Recovery is terminated when the cost of the injected steam equals the value of the recovered oil. Second, it helps recovery by...
Proceedings Papers

Paper presented at the SPE Europec, December 1–3, 2020
Paper Number: SPE-200574-MS
... registered in all the experiments with unfavorable mobility ratios due to fingering. All our observations are in agreement with the current theory of immiscible displacement in porous media. The novel automated system paired with the inversion algorithm were developed to allow for virtually real time...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-340
... determined with current methods, efforts to confine the results are underway in industry as well as academia. Using weighting parameters from AE source characterization, such as moment tensor analysis and additional monitoring, such as distributed temperature sensing (DTS), distributed acoustic sensing (DAS...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2013
Paper Number: SPE-166140-MS
... primary field of the transmitter and the secondary fields produced by currents induced in the electrically conductive formation. The ratio of scattered to primary magnetic field depends upon conductivity, frequency, and borehole separation ( Wilt et al ., 1995 ). Whenever possible, the sources and...
Journal Articles
SPE Formation Evaluation 2 (03): 289–302.
Paper Number: SPE-14188-PA
Published: 01 September 1987
... components of the magnetic . field, Aim H x = component of magnetic f~eld parallel to slot axis, Aim H y = component of magnetic field parallel to tool axis, Aim H P) = Hankel function of the first kind He) I = derivative of Hankel function of the first kind i == r-1 I = probe current, A Ia T = dipole moment...
Proceedings Papers

Paper presented at the SPE Russian Petroleum Technology Conference, October 26–29, 2020
Paper Number: SPE-202053-MS
... viability of currently uneconomical fields or separate reservoirs (zones). The novelty of this work consists in the achieved level of integration of model values from various disciplines with the actual data. The initial and current parameters of stimulated wells demonstrate a broad perspective for...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 19 (03).
Paper Number: SPWLA-1978-vXIXn3a2
Published: 01 May 1978
... permanent dipole moment, due to the asymmetry of their electrical charge distribution. Upon the application of a field, a degree of molecular orientation takes place that creates some order among the originally randomly oriented molecular dipoles. In this way, an overall orientation in the field direction...
Proceedings Papers

Paper presented at the SPE Western Regional Meeting, April 23–26, 2019
Paper Number: SPE-195263-MS
... describes the ability of a material to store electrical energy or polarize in an induced electrical field ( Debye 1934 ; Von Hippel 1954 ; Wyman 1936 ). Polarity is defined as the volume average of the dipole moments of a molecule and dielectric constant is a macroscopic measure of the dipole moments; so...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 19–22, 2010
Paper Number: SPE-135254-MS
.... Alternately, the analytical solution presented by Han et al. (2007) to propagate the uncertainties of a symmetric tensor to its principal directions is currently undergoing study for use here. The uncertainties estimation of the fault-plane solution will need to be done in three steps. The first step is...

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