Abstract
Porosity measurements in unconventional rocks are complicated by a very small and variable pore sizes, strong interaction of water with clay minerals, mixed mineralogy (hence variable matrix), mixed wettability and adsorbed hydrocarbons. The pore structure has a significant impact on understanding of formation fluids volumes and deliverability. Due to complex internal structure and presence of nano-pores it is difficult to characterize it with traditional nitrogen sorption/condensation and/or mercury porosimetry. NMR offers a non-destructive, lithology-independent (to a certain degree), and relatively fast solution; utilizing of T1 and T2 measurements.
Carbonate Mudstones, Cherts and Organic Matter-Pyrite-Siderite rich Black Shales exhibit single- or dual-porosity structure, revealing the presence of mico- and nano-pores (0.5-0.1 μm & <0.1 μm). Larger isometric and elongated pores are associated with carbonate/quartz matrix and clay minerals, and smaller, isometric – with kerogen. Preliminary observations correlating favorably with available high-resolution SEM-FIB, XRD and Rock-Eval analysis were utilized to describe pore morphology and characterize mineral volumes.
Advanced petrophysical characterization of six different carbonate mudstones reveals similarities in their structure. Evaluation of Eagle Ford, Niobrara, Utica, Duvernay, Muskwa and Nordegg formations shows that despite their differences all present very similar challenges which may have similar petrophysical solutions. Geological ages of plays reviewed are from Mid Ordovician to Lower Jurassic; areal extents – from East Texas (Maverick Basin) to Canada (Alberta Basin).
All formations are characterized by complex/mixed mineralogy with variable organic matter “contamination” in dispersed and laminated forms; mixed wettability making resistivity-based techniques questionable; multi-porosity systems including fractures, micro and nano-pores. Analysis of clays and TOC volumes, porosity, pore structure and saturation were performed utilizing available conventional core measurements, wireline quad-combo, dipole and NMR logs. Formations have similar petrophysical characterizations: set of four general litho-facies, mineralogy and porosity calculations, water saturation estimate and potential seismic applications for exploration.
Speaker Biography
Pavel E Syngaevsky is a Senior Petrophysicist Advisor with Noble Energy, currently working in the Geoscience Technology Team with focus in Unconventional resource plays appraisal and development. Pavel was with Noble for eight years, and was working as Senior Petrophysicist for Newfield and Sperry Sun prior to that. He has over 18 years of domestic US and international experience in the geoscience, including offshore and onshore projects in China, Kazakhstan, Indonesia and Mexico.
Pavel received a M.Sc. in Mining Engineering/Petrophysics in 1987; and a Ph.D in Petrophysics in 1994 at Academy of Oil and Gas, Moscow, Russia. He also had a post-doctoral fellowship in Reservoir Engineering in 2000, at Louisiana State University. Pavel is a proud oilman in the third generation.
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When
Tuesday, September 18th, 2018
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
The Changing Oil Price Landscape – A Case Study Breaking Down Liquid-Rich Basins in the Rockies
Karthik Srinivasan
Schlumberger
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From the President
Shannon Higgins
Welcome to the 2018-2019 Denver Well Logging Society new year. I hope everyone enjoyed the summer and spent time outdoors, vacationing, and with family. It is now September and starting to feel a bit like fall. Bring on the pumpkin lattes and football.
The board and I are very excited for the upcoming year as we are planning a number of excellent monthly luncheon speakers and presentations, as well as two workshops. I encourage you to check out the ‘meetings and events’ portion of our website. Additionally, I would like to take this opportunity to thank last year’s board members for all their contributions and welcome this year’s new board members. As you are likely aware, DWLS has signed the SPWLA charter agreement solidifying and formalizing our relationship. We are still working through some details but look forward to an enhanced relationship with SPWLA, in the upcoming 60th year of the organization.
We strive to make your membership experience excellent, so please don’t hesitate to contact me with any questions, suggestions or ideas. It’s going to be a great year.
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From the VP - Technology
Patricia Rodrigues
Welcome everyone to the 2018-2019 luncheon series. As we begin this new season and I begin to recruit speakers, I would like to learn from you what do you want to hear in our luncheon series. As petrophysicists we all come from different backgrounds and I prefer not to assume where your interest is. Please send me an email at VP_Technology @ dwls.spwla.org with your comments, suggestions and critiques, please let me know what you would like to change and what you would like to keep. I will strive to find interesting topics for you, so any feedback is welcome.
The purpose of the luncheon series is as much to increase our knowledge on certain topics, as to get connected and meet people in our oil and gas community. Denver is a small community, and for those of us who have been in Denver for some time, we have lived very closely the saying that “it’s a small world”, every luncheon opens new opportunities to connect.
This September we begin with a talk from Pavel Syngaevsky from Noble Energy and the topic is “Pore Structure Characterization of Some North America Carbonate Mudstones”. We hope to see you there.
And in October will have Karthik Srinivasan from Schlumberger with “The Changing Oil Price Landscape – A Case Study Breaking Down Liquid-Rich Basins in the Rockies”.
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From the VP - Technology
Patricia Rodrigues
The 2018 RMAG DWLS Fall Symposium will be held on October 2, from 8:30 am to 4:00 pm at the American Mountain Center in Golden.
Last year’s event was a success, so don’t miss the opportunity to attend this year’s symposium. The topic for this year is: “Conventional Evaluation Methods for Unconventional Reservoirs and Vice Versa”. Talks cover different topics and basins, among them rock properties, imaging, microscopy, Delaware Basin, Midland Basin, DJ Basin, and Eagle Basin.
The cost of the symposium is $225 for DWLS and RMAG members, $250 for non-members and $150 for students. Registration includes breakfast and lunch, and will be open until Friday, September 28th.
For registration and list of speakers please visit: https://www.rmag.org/2018-fall-symposium
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VP Membership
Stefani Brakenhoff
Welcome back to the 2018-2019 DWLS season! We are now accepting DWLS membership dues for the year ($10 for yearly membership, and $75 for a Lifetime membership). Please visit the website to pay on-line, and add it to your cart when you pay for lunch! If you do not know what your standing is, or have any question please email at VP_Membership@dwls.spwla.org.
Currently to start the year off this is our membership as it stands:
There is a list of people on the website for whom our emails to them keep bouncing. Please take a look and if you know anyone on that list please contact them and let them know that we would like to get back in touch with them and update their contact information (VP_Membership@dwls.spwla.org).
Here’s to a new and successful year!
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Editor
Dominic Holmes
Changes are coming!!!
As you should all know by now, the DWLS has signed the charter with SPWLA to become a proper chapter of the society. Hopefully, this won't impact things too much. But there is a change coming I wanted to let you know about. One of the benefits that will now be available to us is to have SPWLA handle the luncheon reservations. This is something that takes a considerable amount of time each month, so I'm excited about this change. However, this may impact you...
As part of our new charter, attendees to all our events will need to be members of the SPWLA. If you are already a Professional member, you are good to go. But if you are not, you will need to become one. You will have two options: a) you can become a Professional member with all the benefits, but at a cost, or b) you can become an Affiliate member at no cost, but with limited benefits. I beleive there is also a Student membership option. Becoming a member at one level or another will be required in order to make a reservation. Of course, you'll only need to set this up once and you'll be good to go moving forward.
It's a small hassle, but the benefit to the DWLS, and more importantly to me, is significant. So I hope you will all embrace this new system once it's in place. The SPWLA and I have some wrinkles to iron out, but I'm hoping to begin using this new system next month. I will, of course, put instructions in the newsletter once everything is in place.
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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 * |
305 |
375 |
| # that are New members |
6 |
12 |
| # that are Students * |
4 |
11 |
| # that are Lifetime Members * |
258 |
311 |
| September luncheon meeting attendance |
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30 |
| October luncheon meeting attendance |
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34 |
| November luncheon meeting attendance |
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30 |
| Holiday party attendance |
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25 |
| January luncheon meeting attendance |
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48 |
| February luncheon meeting attendance |
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41 |
| March luncheon meeting attendance |
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30 |
| April luncheon meeting attendance |
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32 |
| May luncheon meeting attendance |
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40 |
* 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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