Capital Cost:

$10MM (Compressor)
$13 MM (Pipeline)

The Mandate:

The objective of this project was to build a grass-roots compressor station in northeast British Columbia. The compressor station is used to boost the pressure of sour gas from surrounding well sites located in the Tower gas field. The compressed gas is dehydrated and then tied-in to a raw gas gathering pipeline at 16-28-081-17 W6M which transports the compressed dehydrated gas to the Taylor McMahon gas plant.

The Solution:

We designed and managed construction of a sour gas compressor station in BC at 09-28-81-17W6. This included a separator package, a 12MMSCFD compressor package, a 25MMSCFD dehy, water and condensate storage tanks, VRU, flare and KO drum, with associated electricals. In 2008, an additional compressor of similar capacity, along with a second inlet separator was installed.

Associated flow lines included 19 km of 6" pipeline with a major HDD river crossing of 1.5 km at Septimus Creek at a total cost of $6MM, including $1.15MM for the crossing. Also 14 km of 8" pipeline including two HDD river crossings of 1 km and 0.6 km at Kiskatinaw River and an unnamed creek at a total cost of $8MM, including $1.5MM for the crossings.

Capital Cost:

$2.6MM (Battery)
$1.1MM (Pipelines)

The Mandate:

Resulting from exploration success, the client was expanding operations and required a new 2000 BPD oil battery complete with gas conservation and compression.

The Solution:

A new battery was designed and constructed consisting of an inlet / group & test separator skid, treater, produced oil, recycle and water tankage, solution gas compressor, VRU, flare system, and related ancillary equipment. The facility handles:

• Maximum battery oil rate of 1890 BPD
• Maximum battery water rate of 110 BPD
• The installed gathering system included two satellites, 16 km of 3” pipeline, 6 km of 4” pipeline and 16 km of 6” sales gas line

Capital Cost:

$10.5 MM

The Mandate:

The proposed gas plant will be used to process gas from a sweet Montney gas zone that will be developed in the same area as the proposed gas production facility. Sweet gas from the well sites will be wet metered and brought into the facility along with any production liquids for processing. The sweet gas will be compressed and processed through a dew-point control skid (either dehy or refrige) and then metered before discharging into an existing Spectra Energy sweet gas sales pipeline. The produced water will be injected into a disposal well and any hydrocarbon liquids will be trucked from site and sold at a nearby sales terminal

The Solution:

GRB constructed and commissioned a sweet gas production facility in the Farrell Creek area of NE British Columbia.  This grass roots sweet service facility consisted of the following installations:

• Inlet riser area complete with pig receivers and common inlet header
• 3 phase horizontal inlet separator sized for a capacity of 50 MMSCFD of gas
• 2 stage reciprocating compressor with a capacity of 12.5 MMSCFD of gas with infrastructure in place to increase total compression capacity up to 50 MMSCFD of gas with the addition of three (3) compressors of similar size
• Dehydration package for dew point control sized for a capacity of 25 MMSCFD of gas with infrastructure in place to increase dehydration capacity to 50 MMSCFD of gas with addition of one (1) similar sized unit
• Sales gas meter station operated by Spectra with H2S analyzer, gas chromatograph, water cut analyzer and a sonic meter run with a capacity of 50 MMSCFD of gas. The ability to switch out the sonic meter run for a larger size  to increase the capacity to 100 MMSCFD of gas
• Outlet riser with provisions for future pig launcher and 10" diameter pipeline to tie-in the production facility into a Spectra sales gas pipeline
• Two (2) 400 barrel storage tank for free liquids
• Site power provided by a 190 kW natural gas driven generator package
• On site instruments work on instrument air to be provided by an on-lease instrument air compressor package
• Multi-well gathering system c/w with wellsite metering and SCADA data transmission and control.

Capital Cost:

$7 MM

The Mandate:

The client was looking to optimize the compression at an existing station:

• Better handling (avoid temperature and capacity issues) of lowering inlet pressure by changing from three stages of compression to four stages of compression
• Replace older equipment to minimize future downtime and repair bills.

The Solution: 

GRB engineered and managed the installation of the following equipment:

• One 3550 BHP, two stage reciprocating compressor package with a Cat G3612TA LE Driver, and an Ariel JGC/6 Compressor
• Three-phase utility power brought into site by the local utility vendor
• A transformer for hook-up of the three phase utility power
• A new electrical building containing the MCC for the K8 package
• Above ground piping and electrical cable trays
• Additional yard fencing surrounding the new compressor
• A sales trim cooler, with bypass, for use during the summer months

Capital Cost:

$1MM

The Mandate:

The client required a new facility for oil treating, water separation and disposal at an existing oil satellite.

The Solution:

GRB engineered and managed procurement and installation of the facility, including:

• Modifications for fuel gas take-off and ESD valving to an existing inlet header and test separator package
• 6' x 32' free water knock out, complete with a 1 million btu burner system, fuel gas scrubber and associated instrumentation
• Design and installation of a water injection building capable of handling 5000 bpd of fluid at 1000 psi discharge pressure
• Two tanks within the tank farm containment area - one 750 bbl water tank and one 400 Bbl emergency oil tank
• New 480 Volt Motor Control Centre and PLC control panel, and working with TransAlta to increase power of the existing three-phase power transformer