Abstract
The assessment of fracture fluid conducting capability in reservoirs is of great significance for hydrocarbon production, especially for tight reservoirs with fractures as the main reservoir fluid transport conduits. In recent years, the dipole shear-wave reflection imaging technology has been effectively applied to identify near-well formation fractures and determine their orientation; but the evaluation of the fluid conducting effectiveness of the acoustically-imaged fractures remains a challenging task. To accomplish this task, this paper proposes a method that combines the dipole acoustic reflection imaging with a geo-mechanical analysis to determine the stress state on the fracture surface. The fracture orientation and inclination, as obtained from the borehole reflection imaging, are combined with in-situ stress condition to calculate the effective stress state of the fracture surface using a 3D Mohr diagram analysis, which, when compared with the Mohr-Coulomb failure criterion, determines whether the fracture is in the critically stressed state and is therefore fluid conductive. Most importantly, our analysis shows that the typical 180-degree fracture orientation azimuth uncertainty in the dipole shear-wave imaging does not affect the determination of the stress state on the fracture surface in the Mohr-diagram analysis, so that the two methods can be effectively combined to form a new method for evaluating the fluid conducting effectiveness of fractures. The application examples from fractured reservoirs show the effectiveness of the new evaluation method, and the evaluation results can be used to provide useful information for field development and production planning.
Speaker Biography
Xiao-Ming Tang is a professor of Geoscience at the China University of Petroleum, Qingdao, China. He received a Doctor of Science degree from MIT in 1990 and worked for the petroleum industry for more than twenty years. He has broad interests in oil and gas exploration, including seismic wave theory, borehole geophysics, petrophysics, and rock mechanics.
|
|
Regular luncheon reservation: 
Vegetarian luncheon reservation:
Use one of the PayPal links above to make your luncheon reservation.
If you are registering for someone else or using a PayPal account that is not in your name, please click here to send us an email with the correct registrant information. You should also use this link if you are registering multiple people; please provide the name and company affiliation for each registrant.
Forward this newsletter to a friend to invite them to the luncheon.
|
|
|
When
Tuesday, October 18, 2022
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
Deep Learning for Multi-Well Automatic Log Correction
Vanessa Simoes
Schlumberger
|
|
|
|
From the President
Tamara Maxwell
Hi DWLS members,
Thank you to all of you who attended last month’s kickoff session, it was very refreshing to hear from Maggie who did an excellent job explaining to us how tracers can be used to validate and revise subsurface models! I know I found the information extremely valuable and hope you did too!
Katerina has lined up some great speakers for this season and next month starts a couple of talks from SPWLA distinguished lecturers.
Please feel free to reach out to the board if you have any questions or suggestions on future meetings, our contact can be found on the website, or you can reach out to me directly at: president@dwls.spwla.org
See you in October!
|
|
|
From the VP - Technology
Katerina Yared
Dear DWLS friends,
Thank you for attending our September talk. It was great seeing new and familiar faces!
PLEASE VOTE for the Spring 2023 workshop topic: https://www.surveymonkey.com/r/MWLP2GP
We will try our best to honor your votes and set up a workshop that the majority wants to see.
|
|
|
Calendar of Events
Click the calendar to the right to view events on the web.
Other Important Events
2023 SPWLA Annual Symposium, June 11-14, 2023 (Conroe, TX)
|
|
DWLS Sponsors
Click here to view the sponsors on the website, or click on any image to contact a sponsor.
|
|
Chapter Statistics
Statistic
|
This Year
|
3-Year Average
|
| # of Active members * |
270 |
296 |
| # that are New members |
2 |
2 |
| # that are Students * |
10 |
7 |
| # that are Lifetime Members * |
246 |
258 |
| September luncheon meeting attendance |
30 |
40 |
| October luncheon meeting attendance |
|
33 |
| November luncheon meeting attendance |
|
45 |
| Holiday party attendance |
|
26 |
| January luncheon meeting attendance |
|
47 |
| February luncheon meeting attendance |
|
38 |
| March luncheon meeting attendance |
|
26** |
| April luncheon meeting attendance |
|
36** |
| May luncheon meeting attendance |
|
36 |
* 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.
|
|
|
|
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.
|
|
|
|
|
