Environmental Engineering Reference
In-Depth Information
Table 1 Summary of mechanical operations prior to production.
15
Operation
Materials and equipment
Activities
Duration
Access road and well-pad
construction
Backhoes, bulldozers and other
types of earth-moving
equipment.
Clearing, grading, pit
construction, placement of
road materials such as
geotextile and gravel.
Up to 4 weeks per well pad
Vertical drilling with smaller
rig
Drilling rig, fuel tank, pipe
racks, well control
equipment, personnel
vehicles, associated
outbuildings, delivery trucks.
Drilling, running and cementing
surface casing, truck trips for
delivery of equipment and
cement. Delivery of equipment
for horizontal drilling may
commence during late stages
of vertical drilling.
Up to 2 weeks per well;
one-to-two wells at a time
Preparation for horizontal
drilling with larger rig
Transport, assembly and setup,
or repositioning on site of large
rig and ancillary equipment.
5-30 days per well
Horizontal drilling
Drilling rig, mud system
(pumps, tanks, solids control,
gas separator), fuel tank, well
control equipment, personnel
vehicles, associated
outbuildings, delivery trucks.
Drilling, running and cementing
production casing, truck trips
for delivery of equipment and
cement. Deliveries associated
with hydraulic fracturing may
commence during late stages
of horizontal drilling.
Up to 2 weeks per well;
one-to-two wells at a time
Preparation for hydraulic
fracturing
Rig down and removal or
repositioning of drilling
equipment. Truck trips for
delivery of temporary tanks,
water, sand, additives and
other fracturing equipment.
Deliveries may commence
during late stages of horizontal
drilling.
30-60 days per well, or per well
pad if all wells treated during
one mobilisation
