Abstract
The bulk permeability of shale reservoirs has contributions from matrix, open natural fractures (if present), un-propped hydraulic fractures, and propped hydraulic fractures to varying degrees. Through the joint industry projects conducted by Core Laboratories, the permeability and/or conductivity for these have been measured. These data have all demonstrated a decline to varying degrees with increasing overburden pressure, which can be a proxy for drawdown and pore pressure depletion and has significant implications on well performance. The presentation will review case history comparisons of open-choke and restricted-rate wells and their effect on EUR and whether the initial permeability loss due to high drawdown is reversible and what would happen if an open-choke well is later rate-restricted. Several shale reservoirs will be used as case history examples.
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When
Tuesday, March 16, 2021
11:00 am - 12:00 pm
Cost
At this time we are not going to charge anything for these webinars. We reserve the right to change this in the future.
Webinar reservation: 
Next Month's Talk
Formation Evaluation Applying Deductive and Inductive Methodologies: Which one to use when Characterizing Reservoirs
Luis Stinco
Olempetra
SPWLA Distinguished Speaker
Forward this newsletter to a friend to invite them to the webinar.
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From the President
Yulia Faulkner
Dear DWSL Members and Friends, wherever you are, I truly hope you are staying safe, warm, and sound!
Denver Well Logging Society is sending best wishes to the state of Texas. As most of you know, Texas was hit with the worst winter storm it has had in the last 70 years. While most of the power is thankfully being restored, so many Texans were left with busted waterlines, without the bare necessities they need to survive. Reach out to fellow members in Texas, send them love and prayers, as they work through hard times to stabilize, rebuild, and just get back to living.
Thank you for your continuing support and great monthly luncheon attendance! Spring workshop is around the corner, spread the word, attend if you can.
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From the VP - Technology
Jenny LaGesse
Thank you to everyone who attended February’s webinar. Our SPWLA Distinguished Speaker Luis Quintero (Halliburton) delivered an interesting presentation on tight gas formations and the resulting Q&A with our audience made for a great lunch hour. We have received a lot of positive reviews from this, and all our webinars, and we appreciate your feedback for this new platform while we maintain social distancing protocols.
- Registration is open for this month’s webinar featuring Greg Salter (Core Laboratories) and his talk, “Pressure-Dependent Permeability of Shale Reservoirs and Implications for Estimated Ultimate Recovery.” The webinar will be on Tuesday, March 16, 2021. This event is free but you must register to attend. Registration: https://attendee.gotowebinar.com/register/545638553356562448
A look ahead at the remainder of our 2020-2021 speaker season:
- Tuesday, April 20, 2021: SPWLA Distinguished Speaker Luis Stinco (Olempetra), "Formation Evaluation Applying Deductive and Inductive Methodologies: Which one to use when Characterizing Reservoirs." Registration: https://attendee.gotowebinar.com/register/891529518292350480
- Tuesday, May 25, 2021: Harry Xie (Core Laboratories), "Characterization of Kerogen and Solid Organics of Unconventional Source Rocks Using Solid-Type 20MHz NMR Techniques.” This date is a week later than our usual meeting to accommodate the SPWLA meeting the week prior. Registration: https://attendee.gotowebinar.com/register/7515645073893961742
Registration for the DWLS 2021 Spring Workshop is open! We are excited to open registration for our spring workshop: “Horizontal Petrophysics: Applications and Interpretation Techniques in Reservoir Characterization” after the pandemic-induced cancellation of this annual DWLS event in 2020. The workshop will be held online on April 29, 2021, from 9 am – 4 pm. We have nine expert speakers with original research, including three SPWLA Distinguished Speakers, Denver locals, as well as international guests. This is one to get on your calendar early!
After this past season of free monthly luncheons, we have decided to charge for this all-day event. Registration will include a workshop PDF with speaker abstracts, bios, and presentation slides. The agenda and speaker abstracts will be emailed to members and available online.
Register here: https://attendee.gotowebinar.com/register/3903816446859566349
Workshop registration fees (note to get the member and student rates you will need a discount code which will be emailed out soon):
Non-members: $100
DWLS members: $75
Students: $20
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From the Past President
Patricia Rodrigues
There are two positions open for the 2021-2022 DWLS Board of Directors. Working with the DWLS helps your community and gives you opportunity to learn and network. This year we need volunteers for the VP of Technology and Social Events Director positions. If you are interested in one of these or any other position please reach out to us!
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Calendar of Events
Click the calendar to the right to view events on the web.
Other Important Events
2021 SPWLA Annual Symposium, May 15-19, 2021 (Boston,MA) - Note this will be held virtually
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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 * |
279 |
348 |
| # that are New members0 |
1 |
15 |
| # that are Students * |
7 |
7 |
| # that are Lifetime Members * |
260 |
263 |
| September luncheon meeting attendance |
49 |
48 |
| October luncheon meeting attendance |
31 |
37 |
| November luncheon meeting attendance |
42 |
32 |
| Holiday party attendance |
30 |
21 |
| January luncheon meeting attendance |
56 |
48 |
| February luncheon meeting attendance |
36 |
60 |
| March luncheon meeting attendance |
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35** |
| April luncheon meeting attendance |
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29** |
| May luncheon meeting attendance |
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64 |
* 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.
** These numbers are skewed due to COVID-19 luncheon cancellations.
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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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