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Porosity determination

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Proceedings Papers

Paper presented at the SPE Asia Pacific Oil and Gas Conference and Exhibition, October 23–25, 2018
Paper Number: SPE-191867-18APOG-MS
... reinjection, PETRONAS R&D team are studying the effects of re-injected CO 2 on the mineralogical and petrophysical properties of the reservoir and decided to incorporate Digital Core Analysis (DCA) into the case study. Although porosity determination and other petrophysical property characterisation...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 8–10, 2012
Paper Number: SPE-159522-MS
..., P75 and P95. Comparisons are made on the bulk density measurement in isolation, and then subsequent impact on the porosity and water saturation are assessed to illustrate possible implications on reservoir modeling and reserves determinations. Further discussion briefly covers the limitations...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, November 11–14, 2007
Paper Number: SPE-110803-MS
... fluids is rarely achieved. Additionally, the inversion process creates interdependencies between T 1 , T 2 and D . These effects conspire to introduce inaccuracies in the reported porosity. We investigate the influence of acquisition parameters, inversion parameters, and noise on the determination...
Proceedings Papers

Paper presented at the SPWLA 39th Annual Logging Symposium, May 26–28, 1998
Paper Number: SPWLA-1998-BBB
... ABSTRACT Experience demonstrates that there is a need to assess whether or not logging tools are providing acceptable porosity values in horizontal wells. The economic viability of a field crucially depends on accurate porosity determination. Porosity can be derived from a number of different...
Proceedings Papers

Paper presented at the SPE Permian Basin Oil and Gas Recovery Conference, March 23–26, 1998
Paper Number: SPE-39774-MS
... Abstract The porosity of gas-bearing formations is determined using empirical models. These models use the porosity values displayed by the density and neutron logs, assuming that both tools investigate the same gas saturation profile. They also assume that the variation of gas density and mud...
Proceedings Papers

Paper presented at the SPE Production Operations Symposium, April 7–9, 1991
Paper Number: SPE-21661-MS
... Abstract The determination of reservoir porosity through casing has become a vital concern as more old fields undergo detailed re-evaluation. Many times the prevailing situation is that there Is no reliable porosity data and the well has tubing in place. in porosity data and the well has...
Journal Articles
Petrophysics 29 (01).
Paper Number: SPWLA-1988-v29n1a4
Published: 01 January 1988
... average equation log analyst january-february porosity matrix velocity well logging Raymer reference data equation application propagation matrix lithology acoustic formation factor accurate porosity determination The Concept of Acoustic Formation Factor More Accurate Porosity...
Proceedings Papers

Paper presented at the SPWLA 27th Annual Logging Symposium, June 9–13, 1986
Paper Number: SPWLA-1986-G
... equation also renders proper account of the situation prevailing at porosities over 50 %, where the porous medium starts loosing rigidity and behaving as a fluid for the propagation of sound waves. The application of the acoustic formation factor equation results in more accurate porosity determination...
Proceedings Papers

Paper presented at the 1983 SEG Annual Meeting, September 11–15, 1983
Paper Number: SEG-1983-0353
... sources are hydraulically driven vibrators which generate swept- frequency signals. Another S-wave source proven effective consists of three parallel strings of Primacord (detoqating cord) buried in shallow trenches a few inches apart. Data Seismic 8 Sandstone and Limestone Porosity Determination from...
Proceedings Papers

Paper presented at the SPWLA 21st Annual Logging Symposium, July 8–11, 1980
Paper Number: SPWLA-1980-JJ
... ABSTRACT Large volumes of gas are believed to exist in the Tight Western Gas Sands. Yet, to date there has been little exploitation of this potential resource. To aid in bringing this gas to market, research is being conducted to determine the best methods for evaluating the porosity...
Proceedings Papers

Paper presented at the SPE Permian Basin Oil Recovery Conference, May 7–8, 1959
Paper Number: SPE-1252-G
...SOCIETY OF PETROLEUM ENGINEERS OF AIME Fidelity Union Building Dallas, Tex. THIS IS A PREPRINT SUBJEX:;T TO CORREX:;TION Chlorinity and Porosity Determination in Cased and Open Holes by Nuclear Logs by Courtney Waddell and John Q. Wilson Lane-vJells Co., Midland, Tex. INTRODUCTION For a number...
Journal Articles
Trans. 204 (01): 132–136.
Paper Number: SPE-401-G
Published: 01 December 1955
..., combined with known relation of logging variables, makes thin bed porosity determination practical. With the use of the Scintillometer a method has been derived whereby the apparent level of radiactivity, as recorded on radiation logs, may be converted to the true level. The true level of radioactivity...
Journal Articles
Petrophysics 7 (02).
Paper Number: SPWLA-1966-vVIIn2a5
Published: 01 March 1966
... are characteristic of the formation and its contained fluids. These factors can be determined best by "calibration" of the log data with directly measured porosity data. The direct methods most commonly used for determining porosity by core analysis are presented. The advantages, limitations and errors of each...
Proceedings Papers

Paper presented at the SPWLA 1st Annual Logging Symposium, May 16–17, 1960
Paper Number: SPWLA-1960-E
... are characteristic of the formation and its continued fluids. These factors can be determined best by "calibration" of the log data with directly measured porosity data. The direct methods most commonly used for determining porosity by core analysis are presented. The advantages, limitations and errors of each...
Images
<b>Porosity</b> <b>determination</b> within the Bazhen-Abalak formation using density, ne...
Published: 15 October 2018
Figure 1 Porosity determination within the Bazhen-Abalak formation using density, neutron and NMR logging data. More
Images
<b>Porosity</b> <b>determination</b> results from direct measurements on drill cuttings o...
Published: 05 June 2012
Figure 8 Porosity determination results from direct measurements on drill cuttings of vertical well A show a good comparison with sonic log porosities. More
Images
Images
An example of vug <b>porosity</b> <b>determination</b>
Published: 16 October 2017
Figure 4 An example of vug porosity determination More
Journal Articles
J Pet Technol 15 (09): 945–959.
Paper Number: SPE-617-PA
Published: 01 September 1963
... accurate porosity determinations may be obtained. The formation density log, the sonic log and the neutron log provide three independent measurements of physical properties of formations in situ. Usable relationships between these properties and porosity are well known. The inaccuracies of computing...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 5–8, 2003
Paper Number: SPE-84209-MS
... previously matrix parameters, the value and aspect ratio of secondary pores are determined by the joint inversion of P- and S-velocities (minimizing the difference between the experimental data and velocities predicted for the double-porosity model). The obtained aspect ratio indicates the type of secondary...

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