American Oil and Gas Reporter - September 2022 - 71

SpecialReport: Reservoir Diagnostics
FIGURE 5
distance (assumed to be 10 feet in this
study). Either way, once fractures connect
between wells, proppant can transport
along them, forming continuous flow
pathways and causing interference.
Figure 5 illustrates communicative pathways
by showing the placement of proppant
in each fracture. The hotter the color, the
more proppant placed. Child wells 2 and
3 have a large amount of overlapping
proppant, and the communication was
very high (as indicated by a large slope
change on the simulated pressure interference
test). This matches the strong communication
measured during the field test.
Communication exists for all other
wells, but degrades as a function of distance
because the proppant pathway is
finite conductivity. The proppant pathway
between child wells 2 and 6 was so
distant that neither the simulator nor the
DAVE RATCLIFF joined ResFrac in
2019 as the company's first completions
and reservoir engineer and its fifth employee.
He has nearly 28 years of oil
and gas experience in a variety of disciplines.
Before joining ResFrac, Ratcliff
spent 10 years working as a petrophysicist
and petrophysics department manager
for both Forest Oil and QEP Resources.
Additionally, he spent 13 years with
Schlumberger Wireline in various field,
management and design roles. Ratcliff
holds a B.S. in mechanical engineering
from the University of Texas at Austin.
MARK MCCLURE is co-founder and
chief executive officer of ResFrac. Before
founding ResFrac in 2015, McClure was
an assistant professor at the University
of Texas at Austin in the department of
petroleum and geosystems engineering.
He serves on a number of scientific and
Proppant Bridging Between Wells
Proppant Bridging from Child
Well #2 to Child Well #5
Parent
Well
Child
Well #2
Child
Well #3
Child
Well #5
Child
Well #6
actual data recorded any interference between
them. There was a distinct gap between
child wells 5 and 6, with only a
academic boards and committees, and
as an adjunct professor at Stanford University.
McClure holds a B.S. in chemical
engineering, an M.S. in petroleum engineering,
and a Ph.D. in energy resources
engineering from Stanford University.
GARRETT FOWLER is chief operating
officer of ResFrac Corp. in Palo
Alto, Ca. Prior to joining ResFrac as
vice president of operations, Fowler was
principal reservoir engineer at Tachyus
Corp., where he worked with national
oil companies, supermajors, and independents
on deploying data science solutions.
Before that, he was a reservoir
engineer for Occidental Petroleum specializing
in waterflood surveillance, piloting,
and optimization. Fowler holds
a B.S. in energy resources engineering
and an M.S. in petroleum engineering
from Stanford University.
small amount of bridging in only one
fracture, thereby limiting communication
between No. 6 and the other wells. ❒
BRENDAN ELLIOTT is a completions
engineer in the drilling and completion
technology group at Devon Energy. Primarily
focused on complex development
planning, modeling and fracture diagnostics,
Elliott supports the Delaware
Basin and Devon's other major operated
areas. Elliott has a B.S. from Texas A&M
University, an M.S. in petroleum engineering
from the University of Texas at
Austin, and is currently a Ph.D. candidate
in petroleum engineering at UT Austin.
AUSTIN QUALLS is a reservoir engineer
in Devon Energy's Delaware
Basin business unit. At the time of the
five-well STACK pad modeling study,
he was working in the Anadarko Basin
with a focus on future development planning
in the STACK play. Qualls has a
B.S. in petroleum engineering from the
University of Oklahoma.
Editor's Note: The preceding is the first in a two-part article on a comprehensive modeling study of
complex parent-child well interactions in a five-well pad in the STACK play. Part II will appear in AOGR's
October issue and cover the model calibration to the remaining observations, model prediction and match
historical production rates, and discussion of damage mitigation and remediation in the parent well.
SEPTEMBER 2022 71

American Oil and Gas Reporter - September 2022

Table of Contents for the Digital Edition of American Oil and Gas Reporter - September 2022

Contents
American Oil and Gas Reporter - September 2022 - Intro
American Oil and Gas Reporter - September 2022 - Cover1
American Oil and Gas Reporter - September 2022 - Cover2
American Oil and Gas Reporter - September 2022 - 3
American Oil and Gas Reporter - September 2022 - 4
American Oil and Gas Reporter - September 2022 - Contents
American Oil and Gas Reporter - September 2022 - 6
American Oil and Gas Reporter - September 2022 - 7
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American Oil and Gas Reporter - September 2022 - Cover3
American Oil and Gas Reporter - September 2022 - Cover4
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