Meeting Information
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"Subsurface fluid characterization using downhole
and core NMR t1t2 maps combined with pore-scale imaging
techniques"
Margaret Lessenger
Newfield Exploration Company
Characterization of the subsurface fluid types,
porosity, saturations, and wettability are critical for
understanding the type and volumes of fluids that will
be produced during primary completions and secondary
recovery.
Newfield has approximately a dozen wells with NMR T1,
T2, and diffusion data in the producing section of
Monument Butte Field (Utah, USA). We have identified
patterns of NMR, dielectric, and standard triple-combo
log data that are associated with differences in
estimation of clay-bound water volumes from NMR and XRD
data. We present results from pore-scale imaging, NMR
core-flood experiments, USBM (United States Bureau of
Mines) measurements of wettability, and 2.5D inversion
of NMR data used to characterize the variable
wettability of GMBU sandstone reservoirs.
We found that the sandstone reservoirs are mixed-wet
at the micro- and macro-pore scales, including presence
of oil-wet clays. Mixed-wettability complicates
estimation of fluid types and volumes from NMR data
using standard interpretation techniques.
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About the Speaker
Margaret Lessenger is a petrophysicist for Newfield
Exploration Company in Denver. She has over 30 years of
experience as a geophysicist, geologist and
petrophysicist working in various basins in the Rockies,
North Sea and Gulf of Mexico. She has worked for the
Superior Oil Company, ARCO Oil and Gas, Platte River
Associates, the Colorado School of Mines Department of
Geology, and Williams Exploration prior to joining
Newfield. Lessenger holds a BS in Geophysical
Engineering, MS in Geophysics, and PhD in Geology from
the Colorado School of Mines. She is a member of SPWLA,
AAPG, SPE and SCA.
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From the President
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Suzanne Heskin
Hello! I hope everyone is enjoying the
beautiful autumn our great state is having. The
DWLS year has started off well, and I encourage all of
you to continue attending the luncheons that Bob has
been doing a great job of organizing. Bring a
co-worker, even if they aren't a petrophysicist, as they
may learn something that will help them or help in
communications between disciplines.
If you happened to attend SEG recently and
saw/heard/learned something that might be of interest to
DWLS members, let the board know and we can find a way
to share that information.
A short thank-you to the board, and specifically
Katarina for doing such a great job this fall. We
have a fantastic group of board members this year.
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From a Vice President - Membership
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Aaron Fisher (Tracker Resources)
Hello everyone!
November is right around the corner, which means that
the yearly renewal process is almost up. Those of
you who have not renewed your yearly dues can do so by
clicking on the following link: (http://dwls.spwla.org/Luncheon_Reservation.htm#Dues).
November marks the end of the grace period for yearly
members to renew. If you do not renew you will be
dropped from the monthly newsletter. Don't miss
out on hearing about the spring workshop and all the
monthly talks.
Some good news: 2015 has been a difficult year for
many of us, however, DWLS membership has continued to
grow. Currently we have 378 members of which 308
are lifetime members, up from 351 and 296 last year!
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Meeting Details
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Please thank
The Leeds Group
for sponsoring the free beverage tickets this month
(beer, wine or soda)!
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11:20 am - 1:30 pm
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Wynkoop Brewing Company
(tell
me how to get there)
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$20 per person
$25 at the door
(space permitting)
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| Must be made on-line at
http://dwls.spwla.org
before 5 PM on Thursday,
. Or click below to go directly to PayPal. |
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Please note that the room has a maximum capacity
of about 100 people. We have generally allowed walk-ins
in the past. However, if we approach this limit
with paid reservations, walk-ins will be turned
away!
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Cancellations must be made no later than 5 PM
the Friday prior to the talk, or you will be responsible
for the full cost of the luncheon!
or contact Lisa Gregor at 303-770-4235.
Our full cancellation/wait list policy is available on the
website.
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"Impact of
experimental studies on unconventional reservoir
mechanisms (SPE 168965)"
Richard Rosen
Consultant
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Calendar of Events
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Click to view the calendar on the web.
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Chapter Statistics
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Statistic
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This Year
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3-Year
Ave.
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# of Active
members |
378 |
345 |
# that are
New members |
8 |
27 |
# that are
Students |
11 |
9 |
# that are
Lifetime Members |
308 |
275 |
September luncheon
meeting attendance |
80 |
81 |
October luncheon
meeting attendance |
83 |
63 |
November luncheon
meeting attendance |
|
75 |
| December holiday party attendance |
|
59 |
January luncheon
meeting attendance |
|
97 |
February luncheon
meeting attendance |
|
88 |
March luncheon
meeting attendance |
|
87 |
April luncheon
meeting attendance |
|
71 |
May luncheon
meeting attendance |
|
74 |
| June
summer social attendance |
|
31 |
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