Environmental Engineering Reference
In-Depth Information
Hydraulic fracturing procedure
Temporary water tanks,
generators, pumps, sand
trucks, additive delivery
trucks and containers,
blending unit, personnel
vehicles, associated
outbuildings, including
computerised monitoring
equipment.
Fluid pumping, and use of
wireline equipment between
pumping stages to raise and
lower tools used for downhole
well preparation and
measurements.
a
Computerised
monitoring. Continued water
and additive delivery.
2-5 days per well, including
approximately 40-100 hours
of actual pumping
Fluid return (flowback) and
treatment
Gas/water separator, flare
stack, temporary water tanks,
mobile water treatment units,
trucks for fluid removal if
necessary, personnel vehicles.
Rig down and removal or
repositioning of fracturing
equipment; controlled fluid
flow into treating equipment,
tanks, lined pits, impound-
ments or pipelines; truck trips
to remove fluid if not stored on
site or removed by pipeline.
2-8 weeks per well, may occur
concurrently for several wells
Waste disposal
Earth-moving equipment,
pump trucks, waste transport
trucks.
Pumping and excavation to
empty/reclaim reserve pit(s).
Truck trips to transfer waste to
disposal facility.
Up to 6 weeks per well pad
Well clean-up and testing
Well head, flare stack, waste
water tanks. Earthmoving
equipment.
Well flaring and monitoring.
Truck trips to empty waste
water tanks. Gathering line
construction may commence if
not done in advance.
0.5-30 days per well
Overall duration of activities for all operations (prior to production) for a six-well multi-well pad 500-1500 days
a
Wireline equipment refers to cabling technology used by operators to lower equipment or measurement devices into the well for the purposes of well
intervention, reservoir evaluation and pipe recovery.
