Abstract
Recently, the focus in source rock exploration has moved from gas-rich to liquid-rich plays and warrants revisiting “bypassed” hydrocarbon charged source rocks, which were deemed uneconomic when first drilled. In North America’s oil fields, there are thousands of wells with different vintages of nuclear and electrical logs, yet these wells generally lack any advanced logs beyond the traditional triple combo. We have developed a workflow that uses a considerable amount of laboratory measurements made on crushed rock to upscale a petrophysical model based on a triple combo logging suite only. The model divides the field (laterally) in oil window and gas window fairways and (vertically) in petrophysical units. The remaining hydrocarbon generation potential is based on geochemical measurements, such as thermal maturity and total organic carbon content (TOC), from core and cuttings in the area. The petrophysical units reflect major geologic intervals with similar porosity and clay content. The workflow was sequentially built by correlating logs with core measurements, using TOC and maturity for organic matter, X-ray diffraction for mineralogy and grain density, porosity, and water saturation from fluids extraction, for volumetrics. The model is applied to the Mancos Shale (New Mexico, USA), a Cretaceous-age source rock, which includes the Niobrara Formation. The Mancos Shale has been penetrated in various fields while developing conventional sandstone reservoirs. The model is validated with measurements on a core recently acquired in the anticipated high-hydrocarbon-yield window. Petrophysical properties predicted from logs agree well with core measurements in blind tests, demonstrating the robustness of the model despite being based on a basic suite of logs and a simple deterministic approach. This model is now routinely used by the asset team as an automated workflow to generate fairway maps, locate sweet spots, and for landing lateral wells.
Read More: https://library.seg.org/doi/abs/10.1190/int-2017-0014.1
Speaker Biography
Jesús M. Salazar received Ph.D. and M.S. degrees in Petroleum Engineering from The University of Texas at Austin (2004 and 2008, respectively) and a B.S. in Physics with honors from Universidad Central de Venezuela (1998). Since late 2018, he works as a Petrophysicist for Marathon Oil in Houston looking for new opportunities within the Permian Basin Growth team. Previously, Jesús worked 11 years with ConocoPhillips in Houston, Australia, and Canada in technology and exploration assignments developing and deploying new workflows for US and international reservoir characterization projects. Prior to ConocoPhillips, Jesús worked five years for the Center for Petroleum Engineering at the University of Texas, in Austin, TX as a research assistant and five years for PDVSA in Venezuela as a Petrophysicist and Reservoir Development Engineer where he started his career in 1997. Jesús also worked for Occidental Oil and Gas as a summer intern, in Bakersfield, CA and Houston, TX. Before being elected as the SPWLA President for 2019-2020, he had been the president, vice president, and secretary of the Houston Chapter of the SPWLA, and the VP Technology and Technical Chairman for the 2018 SPWLA Symposium. Jesús is a former Associate Editor for Case Studies in Petrophysics (SPWLA) and currently the co-Executive Editor for the journal SPE Reservoir Evaluation & Engineering.
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When
Tuesday, February 19, 2019
11:20 am - 1:30 pm
Where
Wynkoop Brewing Company
(tell me how to get there)
Cost
$25 per person
$30 at the door (space permitting)
Next Month's Talk
Facies-based Unconventional Petrophysical Modeling in the Delaware Basin
Margaret Lessenger
Rimrock Petrophysics and Analytics, LLC
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From the VP - Technology
Patricia Rodrigues
The DWLS Spring workshop on Data Analytics in Reservoir Evaluation is coming to Denver on Wednesday, April 3rd, 2019. It will be held from 7:30 to 4:00 pm at the American Mountaineering Center in Golden, followed by a happy hour at the Mountain Toad Brewery across the street and sponsored by Emerson/Paradigm (1 drink ticket per person).
Registration is now open and the cost for members is $135, non-members $195, and students $35. To get either the member or student price you must use the links in the emails sent out on January 31st. Registration includes breakfast, box lunch, refreshments and an electronic copy of the booklet.
The final agenda for the workshop is complete with speakers from O&G companies, services companies, and academia. Go to the DWLS website to read the abstracts and for non-member registration information. Here is the list of speakers and topics. We hope to see you there!
- Ridvan Akkurt (Schlumberger)
A Machine Learning Based Automated System for Well Log Editing
- Richard Batsell (Rice University)
Successful Multivariate Modeling of Production from Oil and Gas Wells Enabling the Testing of Significant Managerial Questions
- Reinaldo Michelena (iReservoir)
Petrophysical Multimineral Analysis Using a Genetic Algorithm: Applications to unconventional reservoirs
- Hani Elshahawi (Shell)
Machine Learning for Improved Directional Drilling
- Siddharth Misra (University of OK)
Machine Learning Applications in Reservoir Characterization
- Matt Belobraydic (Schlumberger)
Geology at the Crossroads of the Future
- Kim McLean (Emerson/Paradigm)
Geosteering an Unconventional Shale Lithozone with Confidence
- Richard Cao (Shell)
Integrated stochastic workflow for optimum well spacing with data analytics, pilots, geomechanical-reservoir modeling, and economic analysis
- Ishank Gupta (University of OK)
Rock Typing in Organic Shales: Barnett, Eagle Ford, Woodford and Wolfcamp
- Zoya Heidari (University of Texas at Austin)
Automatic Production- and Fabric-Oriented Rock Classification and Reservoir Evaluation in Organic-Rich Mudrocks through Integration of Multi-Scale and Multi-Physics Formation Data
If you have any questions please contact me.
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From the President
Shannon Borchardt
We are off to a great start this year with an excellent presentation by Aidan Blount at our January luncheon. It was great to see everyone. We are looking forward to the February luncheon where Jesus Salazar will present about practical petrophysical models in the Mancos Shale.
Please plan on joining us for the DWLS Spring Workshop on April 3rd with the topic of Data Analytics in Reservoir Evaluation. We have a great lineup including ten technical presentations, as well as plenty of time for networking.
Lastly, the 2019 DWLS-RMAG Symposium will take place on October 22 with a theme of Multiscale Imaging for Reservoir Optimization. If you are interested in submitting an abstract or are looking for sponsorship opportunities, please contact Katerina Yared.
As always, please contact me if you have any suggestions to continue to improve DWLS.
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From the Webmaster
Tony Holmes
As we begin a new calendar year, it’s time we remember all the fun we have had in past years. In this spirit, I need to remind you we have various additional workbooks and other materials that can grace your bookshelves, simply by purchasing them here.
Most items can be picked up at the next luncheon, or you may contact me to make other arrangements.
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Calendar of Events
Click the calendar to the right to view events on the web.
Other Important Events
2019 SPWLA Annual Symposium, June 16-19, 2019 (The Woodlands, TX)
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DWLS Sponsors
Click here to view the sponsors on the website, or click on any image to contact a sponsor.
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Chapter Statistics
Statistic
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This Year
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3-Year Average
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| # of Active members * |
269 |
376 |
| # that are New members |
17 |
5 |
| # that are Students * |
2 |
10 |
| # that are Lifetime Members * |
257 |
297 |
| September luncheon meeting attendance |
44 |
57 |
| October luncheon meeting attendance |
29 |
62 |
| November luncheon meeting attendance |
43 |
55 |
| Holiday party attendance |
35 |
37 |
| January luncheon meeting attendance |
73 |
67 |
| February luncheon meeting attendance |
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60 |
| March luncheon meeting attendance |
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45 |
| April luncheon meeting attendance |
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47 |
| May luncheon meeting attendance |
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51 |
* Note that we did a thorough cleanup of bad email addresses that resulted in some of our members being removed until they can be tracked down again. So this year's membership numbers are going to be a bit lower.
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The DWLS Newsletter is published monthly September through June by the Denver Well Logging Society. For information on membership or advertising, contact the editor. For other inquiries, contact a member of the Board of Directors.
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