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SPWLA publishes the journal Petrophysics bi-monthly. Petrophysics contains original contributions on theoretical and applied aspects of formation evaluation, including both open hole and cased hole well logging, core analysis and formation testing.
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30644-MS
... with the small grains and the clay minerals, a significant amount of irreducible water is bound to the rock surface, dramatically lowering the resistivity of the pay zone. This phenomenon makes open hole log interpretation quite challenging because pay zone resistivity can sometimes read very close...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition and Conference, November 10–13, 2014
Paper Number: SPE-171790-MS
... of field development plans. Log-derived saturation can suffer from interpretation uncertainties particularly in the transition zone associated with the lack of knowledge of Archie exponents and especially n variability related to wettability. Moreover in the transition zone True Formation Resistivity ("Rt...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition and Conference, October 13–15, 2000
Paper Number: SPE-87239-MS
... permeability and well test permeability. Nine lithofacies were identified from detailed slabbed core observations and lithofacies of non-cored wells were predicted from the cross plots between DT, RHOB, PHIE and MSFL of each lithofacies. The relationship between lithofacies and open-hole log response...
Proceedings Papers

Paper presented at the Middle East Oil Show and Conference, February 20–23, 1999
Paper Number: SPE-53273-MS
...Introduction An integrated data gathering and analysis approach was selected for a key well study drilled in an onshore carbonate oil field. Conventional open hole logs were used for porosity and saturation analysis while formation electrical images were used to investigate fine layering...
Proceedings Papers

Paper presented at the SPE Western Regional Meeting, May 22–24, 1996
Paper Number: SPE-35684-MS
... waterflood areas were compared to production tests to judge the efficacy of the technique. Input from production, geological, and petrophysical reviews were used to refine the model. Estimates of water-cut from open hole log data have been used to guide well completion strategies. Wells with high predicted...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference and Exhibition, March 17–19, 2009
Paper Number: SPE-118378-MS
... operations are performed offline (i.e., off the critical operations path and therefore simultaneous to other activities on the rig). We have now taken the next logical step in performing offline operations. In May 2007, Chevron Thailand introduced the world's first simultaneous open hole wireline logging...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–24, 2008
Paper Number: SPE-116335-MS
... logging equipment, thus allowing earlier production to be realized. These same benefits would also be available to many other operators if similar techniques were employed in their particular operating environment. There is, however, a very good reason for perfecting URF open hole logging...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 5–8, 1997
Paper Number: SPE-38700-MS
... Abstract This paper presents a special case for replacement of open-hole logs by modem cased-hole carbon/oxygen (C/O) logs. The latest generation of C/O logs provide more lithology, porosity, and fluid type data than previous versions. Recent work has developed a body of knowledge...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 29–October 2, 2002
Paper Number: SPE-77560-MS
..., and guided remedial action in others. mud pressure upstream oil & gas wireline tool open hole drill pipe spe 77560 bad hole condition well shuttle messenger wireline pcl shuttle shuttle operation sub operation log analysis directional drilling well planning high angle well...
Proceedings Papers

Paper presented at the International Petroleum Conference and Exhibition of Mexico, March 3–5, 1998
Paper Number: SPE-39869-MS
... calculation porosity core data water saturation iaterolog reservoir lateral log neutron log correlation upstream oil & gas normal log gnt invasion laterolog log analysis san andre field count rate induction log resistivity SPE 39869 INTEGRATING MODERN OPEN HOLE LOGS, CORE DATA AND OLD...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, February 21–23, 2022
Paper Number: IPTC-21879-MS
... images interpretation made for eight wells across the field (three wells with oil-based micro-resistivity image data and five wells with ultra-sonic borehole image data) with the integration of corresponding core description and open hole logs (gamma ray, neutron, density, Sonic DT, and resistivity). All...
Proceedings Papers

Paper presented at the SPE Middle East Oil & Gas Show and Conference, November 28–December 1, 2021
Paper Number: SPE-204693-MS
... Abstract This paper presents an approach by integrating advanced cutting analysis, such as x-ray fluorescence (XRF), and open-hole logs for enhanced formation evaluation of complex clastic formations in near real-time. To verify the methodology, results of surface cuttings analyses are compared...
Journal Articles
OIJ 2020 (11): 44–47.
Paper Number: OIJ-2020-11-044-047-RU
Published: 01 November 2020
... yang 44 11 2020 681.518:550.832 © 2020 1, 2, 2, 2, 2, 2 1 2 (big data) avakinshin@tnnc.rosneft.ru, irmakhmutov@tnnc.rosneft.ru, ydkantemirov@tnnc.rosneft.ru Application of machine learning methods for automatic interpretation of open hole logging data M.A. Basyrov1, A.V...
Proceedings Papers

Paper presented at the SPE Annual Caspian Technical Conference, October 21–22, 2020
Paper Number: SPE-202581-MS
... in open hole section. It is possible to delineate fluid saturation with high accuracy with the logging suite run in this field even without quantitative interpretation of the acquired data. The drilling fluid used for drilling has a lower salinity than formation water. Therefore, decrease...
Proceedings Papers

Paper presented at the SPE Middle East Oil and Gas Show and Conference, March 18–21, 2019
Paper Number: SPE-194781-MS
... resistivity Introduction Logging While Tripping (LWT) is a commercially proven, proprietary formation evaluation technique, to acquire quality open hole triple combo data specially in risky wells where chances of losing radioactive source is high. Immediately after drilling has been completed, the LWT...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 12–15, 2018
Paper Number: SPE-193315-MS
..., proprietary formation evaluation technique, to acquire quality open hole triple combo data specially in risky wells where chances of losing radioactive source is high. Immediately after drilling has been completed, the LWT tools are deployed (pumped down) and wire-line quality open hole logs are acquired...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference, August 22–24, 2016
Paper Number: SPE-180512-MS
... Risk reduction can be achieved using small-diameter memory enabled open-hole logging tools which eliminate the wireline and can be protected inside pipe running into the well. One type of alternative conveyance is where the small-diameter memory enabled open-hole logging tools are conveyed inside...
Proceedings Papers

Paper presented at the SPE Reservoir Characterisation and Simulation Conference and Exhibition, September 14–16, 2015
Paper Number: SPE-175603-MS
... to shearing along the bedding planes and they contribute to the conductive systems in few Abu Dhabi reservoirs. They can be best identified from horizontal borehole image logs, and as spikes in open-hole logs. Natural bedding corridors can be considered as indicators of the reservoir stress history, where...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 20–22, 2015
Paper Number: URTEC-2132361-MS
... for geochemical rock types to be defined from high resolution core TOC data and then related to open hole log combinations using Decision Tree Analysis. Decision Tree Analysis then allows for the same rock types to be predicted from well logs in wells that lack core data. Artificial Intelligence core toc...

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