American Oil and Gas Reporter - July 2023 - 39
treated at different intervals and had
the best response. Oil gravity was 2830
degrees and TVD was 6,600-12,000
feet. Again, the wells demonstrated sustained
improved production trends during
the 18 months following treatment.
Four vertical wells in Delaware Basin
required restimulation. The well's lithology
was carbonate with a TVD of
3,500-5,000 feet. Monthly production
data indicated an increase of 111% on
aggregate over the decline curve through
two years after treating (Figure 2).
In another Delaware Basin application,
four carbonate wells at 3,5005,000
foot depths were restimulated
using the nanofluids. A sucker rod artificial
lift system allowed the production
of the 35-degree API crude. The well's
water cuts were increasing over time,
and were at 80% at the time of treatment.
In the 12 months after treating, the average
water cut was reduced to 65%75%
and the four wells produced an
additional 19,000 barrels of oil compared
with the decline curve).
The solution also was applied in
two horizontal wells in the STACK
play in the Mid-Continent targeting
limestone and sandstone, respectively.
The wells' TVDs were 9,300-11,700
feet with 5,000-foot laterals. Over a
20-month period post-treatment, the
wells experienced an aggregate 88%
production increase over the decline
curve (Figure 3).
A final example is from the Powder
River Basin, where three horizontal
wells with shale and sandstone layers
were treated. The TVD of the wells
FIGURE 4
Powder River Basin Production Results
200
250
300
150
100
50
-10
-8
-6
-4
-2
Treatment
80% Increase
2 48 12
6
Month (relative to treatment month)
ranged from 11,100 to 13,300 feet
and lateral lengths averaged about
8,000 feet. In these wells, total production
increased by 80% over the
decline curve over the 10 months after
treatment (Figure 4).
New Remediation Option
Organic depositions create a significant
production issue for operators
around the world. Implementing a tailored,
water-based metal-oxide nanofluid
technology to disperse paraffins and
alter near-wellbore wettability is proving
successful in a diverse range of
applications in both vertical and horizontal
wellbores. As illustrated in initial
applications in 24 wells in seven basins,
the nanofluid can be implemented with
different rock mineralogy, crude oils,
damaged zones and well histories. In
all cases, oil production improved
vastly over the 24 wells' decline curves.
Moreover, well productivity was immediately
improved and sustained for
at least 10 months after treatment,
with some wells reporting productivity
improvements up to two years after
injecting the nanofluid.
These results underscore the potential
of using low-risk nanofluid to
remediate wells, giving operators a
nontoxic, nonhazardous, and cost-effective
new alternative to capital-intensive
conventional treatment options
such as pigging, hot oiling, solvent
dissolvers and inhibitors.
❒
Editor's Note: The preceding article
is adapted from URTeC 3722922, a
technical paper originally prepared for
presentation at the 2022 Unconventional
Resources Technology Conference,
held June 20-22 in Houston.
10
AMR
RADWAN
Amr Radwan is co-founder and chief technology officer of TenEx Technologies.
Throughout his career, Radwan has been focused on chemistry and materials science
technologies. Before launching TenEx, he managed North American technical sales and
business development for Sahara Petroleum Services and served as vice president of
technology and innovation at Preferred Sands. Earlier in his career, Radwan held
engineering roles related to drilling, completion, production and workover operations.
He has authored or co-authored several patents related to oil field chemistry, and he
received a B.S. and an M.S. in petroleum engineering from Cairo University.
JULY 2023 39
Daily Oil Production (bbl)
American Oil and Gas Reporter - July 2023
Table of Contents for the Digital Edition of American Oil and Gas Reporter - July 2023
Contents
American Oil and Gas Reporter - July 2023 - Intro
American Oil and Gas Reporter - July 2023 - Cover1
American Oil and Gas Reporter - July 2023 - Cover2
American Oil and Gas Reporter - July 2023 - Contents
American Oil and Gas Reporter - July 2023 - 4
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American Oil and Gas Reporter - July 2023 - Cover3
American Oil and Gas Reporter - July 2023 - Cover4
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