American Oil and Gas Reporter - September 2020 - 46

pages 40-47_Layout 1 9/18/2020 3:46 PM Page 46

FIGURE 3
Heel and Toe Stage Group Fracture Growth Curves for BC1H, BC2H and BC3H
(a) B13H Heel Stages

(b) BC2H Heel Stages

600

400

200

600
Fracture half-length [ft]

Fracture half-length [ft]

Fracture half-length [ft]

600

400

200

0

0
0

4,000
8,000
Pump Volume [bbl]

12,000

400

200

0
0

4,000
8,000
Pump Volume [bbl]

(d) BC1H Toe Stages

12,000

0

4,000
8,000
Pump Volume [bbl]

12,000

(e) BC2H Toe Stages

600

600
Fracture half-length [ft]

Fracture half-length [ft]

(c) BC3H Heel Stages

400

200

100

0
0

150

250

300

4,000
8,000
Pump Volume [bbl]

400

200

100

350
12,000

that decreasing the pump rate and job
size reduced the fracture geometry. On
this pad, the impact of changing the completion design on BC1H was more significant than to BC2H.
Fracture geometries of BC1H toe
stages are slightly larger than in the BC2H

0

0

200

250

4,000
8,000
Pump Volume [bbl]

300

350
12,000

toe stages. The BC1H east side fractures
grew into unperturbed rock while BC2H
west side fractures grew into recently
completed rock. BC2H heel stages have
larger geometries than BC1H and BC3H
heel stages for two reasons. First, the
heel stages of BC2H led completions

compared with the BC1H and BC3H,
which meant the rock was unperturbed
for BC2H and had stress barriers influencing BC1H and BC3H fracture growth.
Second, BP2H is located right beneath
the heel stages of BC2H. The heel area of
BC2H had lower local in situ stress initially

LARREZ
GREEN

Larrez Green is co-founder and executive vice president at MDC Texas Energy. Before joining
MDC, Larrez served as chief executive officer of G6 Energy Services, a completions and production
engineer with Cambrian Management LLC, an engineering and operations consultant for various
operators, and a well service engineer for Schlumberger. Green holds a B.S. in civil engineering from
Auburn University.

LAINE
VALLE

Laine Valle is the senior completions engineer at MDC Texas Energy. Before joining the company,
Valle worked as the lead engineering consultant for companies in Howard County, Tx., and as a
reservoir engineer for Chevron and Endurance Resources. She has a B.S. in petroleum engineering
from Colorado School of Mines.
46 THE AMERICAN OIL & GAS REPORTER



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American Oil and Gas Reporter - September 2020 - Intro
American Oil and Gas Reporter - September 2020 - 1
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