American Oil and Gas Reporter - August 2019 - 92

FIGURE 5
Parent Well Shut-In Bottom-Hole Pressure
During Child Fracture Treatment
8,000
West Three Forks Offset - 700 ft
7,000

West Middle Bakken Offset - 330 ft
East Middle Bakken Offset - 400 ft

6,000

Pressure (psig)

5,000

4,000

3,000

2,000

1,000

0
11/30/2015 0:00:00

12/4/2015 0:00:00

12/8/2015 0:00:00

on the offset pads of neighboring wells,
which can attempt to push proppant back
into the fracture system and immediately
flush these wells. Also, operators have
started to conduct prejob injections into

12/12/2015 0:00:00

12/16/2015 0:00:00

offset parent wells in attempts to create a
higher pressure "cage" around depleted
parent wells.
As a result, as the industry is conducting
more and closer infill drilling, it is focusing

on ways to minimize the impact of interwell frac hits. One pressure pumping
provider has started a new service that
allows it to bring offset well pressures
from different pads into the frac site data
van in real time. This enables early observation of parent/child well interference,
and helps customers decide on mitigation
strategies on a parent well in order to
avoid an expensive clean-out.
More detailed pressure interference
analysis can help determine whether wells
are stimulated effectively, whether a "frac
protect" or refrac treatment with surfactants
and other production chemistry is an appropriate way to minimize interference,
and whether the created-fracture systems
in child wells can avoid depleted pressure
areas from parent well completions.
The hydraulic fracturing industry has
changed beyond recognition, growing 10fold in horsepower in the past 15 years,
20-fold in yearly stages pumped, and 40fold in annual proppant mass pumped.
Technological changes have resulted in a
massive cost reduction to commercially
produce a barrel of oil.
"Big picture" statistical analysis supports
these frac design changes, showing the
benefits of the industry's move to larger
volumes, higher stage intensity, and cheaper
and lower-quality proppant.
r

The SPM® EXL
Frac Pump.
Engineered
to overcome.

INSPIRATION

Some may find the world's most brutal
conditions intimidating. We found them
inspiring. We proudly introduce a frac pump
with the highest rod load rating in its class at
238,000 pounds-ready to stand its ground
against the impossible. Bring it on.

EXECUTION

Oil & Gas
601 Weir Way
Fort Worth, TX 76108
USA
T: +1 800.342.7458
www.global.weir/EXLFracPump
Copyright © 2019. S.P.M. Flow Control, Inc. All rights reserved. The trademarks mentioned in this document are
trademarks and/or registered trademarks in the name of The Weir Group, PLC and/or its subsidiaries.

92 THE AMERICAN OIL & GAS REPORTER



http://www.global.weir/EXLFracPump

American Oil and Gas Reporter - August 2019

Table of Contents for the Digital Edition of American Oil and Gas Reporter - August 2019

Contents
American Oil and Gas Reporter - August 2019 - Intro
American Oil and Gas Reporter - August 2019 - 1
American Oil and Gas Reporter - August 2019 - 2
American Oil and Gas Reporter - August 2019 - Contents
American Oil and Gas Reporter - August 2019 - 4
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