Underground Construction - June 2022 - 36
Directional Drilling
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The intersect point was made in front
of the Prime Drill's entry point of roughly
2,700 feet. The DD 440 pilot bore extended
1,375 feet before stopping so the
Prime side bore could make the intersect.
An Inrock Gyro guidance system
was used by both drill units to complete
the intersect. Inrock also supplied the
Cross View system for all upper echelon
involved in the project to log on from a
distance with a computer to monitor rig
pressure, mud volumes and daily progress.
The full length of the pilot hole was
completed in 28 days. Pullback reaming
enlarged the pilot hole to diameters of
30 inches, then with a final pass to 42
inches. The American Augers drill unit
backreamed the hole using Century Gold
Series hole openers.
MN Limited laid out pipe on rollers
at the exit side and the Prime unit comwww.pgjonline.com
36
JUNE 2022 | UCONonline.com
GJ_THIRD-V_generic.indd 1
pleted the pullback in 18 hours. One
mid-point weld was made. MN Limited
personnel made connections at each end
to the new pipeline segment.
Looking back, Roberts said the project
was difficult and challenging. " The cobble
10/17/2018 8:01:27 AM
and boulders made steering difficult until
we reached competent rock, " he said.
" Cold weather always is a challenge, and
temperatures were negative 20 degrees
and colder throughout the project.
Large rental heaters were used, and
mud pump and mud systems were enclosed
to help protect the units from the
cold. When not working, mud and water
lines were drained and blown out.
Roberts credited successful completion
of the difficult project to a total
team effort by all parties involved.
" Communication from the top to the
bottom is what really makes the difference, "
he said. UC
FOR MORE INFORMATION:
ECI Contracting, (507) 969-9054,
ecicontracting.us
MN Limited, (763) 262-7000,
mnlimited.com
American Augers, (800) 324-4930,
americanaugers.com
Inrock, (713) 690-5600, inrock.com
Century Products, (262) 820-3600,
centuryproducts.net
Prime Direct, (715) 247-2473,
prime-direct.com
http://www.ecicontracting.us
http://www.mnlimited.com
http://www.americanaugers.com
http://www.inrock.com
http://www.centuryproducts.net
http://www.pgjonline.com
http://www.prime-direct.com
http://www.UCONonline.com
Underground Construction - June 2022
Table of Contents for the Digital Edition of Underground Construction - June 2022
Contents
Underground Construction - June 2022 - Cover1
Underground Construction - June 2022 - Cover2
Underground Construction - June 2022 - Contents
Underground Construction - June 2022 - 4
Underground Construction - June 2022 - 5
Underground Construction - June 2022 - 6
Underground Construction - June 2022 - 7
Underground Construction - June 2022 - 8
Underground Construction - June 2022 - 9
Underground Construction - June 2022 - 10
Underground Construction - June 2022 - 11
Underground Construction - June 2022 - 12
Underground Construction - June 2022 - 13
Underground Construction - June 2022 - 14
Underground Construction - June 2022 - 15
Underground Construction - June 2022 - 16
Underground Construction - June 2022 - 17
Underground Construction - June 2022 - 18
Underground Construction - June 2022 - 19
Underground Construction - June 2022 - 20
Underground Construction - June 2022 - 21
Underground Construction - June 2022 - 22
Underground Construction - June 2022 - 23
Underground Construction - June 2022 - 24
Underground Construction - June 2022 - 25
Underground Construction - June 2022 - 26
Underground Construction - June 2022 - 27
Underground Construction - June 2022 - 28
Underground Construction - June 2022 - 29
Underground Construction - June 2022 - 30
Underground Construction - June 2022 - 31
Underground Construction - June 2022 - 32
Underground Construction - June 2022 - 33
Underground Construction - June 2022 - 34
Underground Construction - June 2022 - 35
Underground Construction - June 2022 - 36
Underground Construction - June 2022 - 37
Underground Construction - June 2022 - 38
Underground Construction - June 2022 - 39
Underground Construction - June 2022 - 40
Underground Construction - June 2022 - 41
Underground Construction - June 2022 - 42
Underground Construction - June 2022 - 43
Underground Construction - June 2022 - 44
Underground Construction - June 2022 - 45
Underground Construction - June 2022 - 46
Underground Construction - June 2022 - 47
Underground Construction - June 2022 - 48
Underground Construction - June 2022 - 49
Underground Construction - June 2022 - 50
Underground Construction - June 2022 - 51
Underground Construction - June 2022 - 52
Underground Construction - June 2022 - 53
Underground Construction - June 2022 - 54
Underground Construction - June 2022 - 55
Underground Construction - June 2022 - 56
Underground Construction - June 2022 - 57
Underground Construction - June 2022 - 58
Underground Construction - June 2022 - Cover3
Underground Construction - June 2022 - Cover4
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