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ExxonMobil
ExxonMobil's Las Flores Canyon Facility
(POPCO's Gas Processing Plant at right)
What's New
The
County has begun a 10-day appeal
period for a Land Use Permit (LUP)
and Coastal Development Permit (CDP)
for ExxonMobil’s Hondo Field
Water Injection Project. ExxonMobil-Santa
Ynez Unit proposes to inject the
untreated produced water into the
Hondo Field reservoir via the Harmony
Platform instead of cleaning it up
to a certain level and discharging
it into the ocean. Injected
water would allow ExxonMobil to stabilize
reservoir pressure decline and improve
overall oil recovery from the Hondo
reservoir. Currently,
produced water from all three of
ExxonMobil’s offshore platforms
(Hondo, Harmony, and Heritage) flows
to LFC via the oil/water emulsion
pipeline. Water is first separated
from the oil and de-gassed at the
Oil Treatment Plant, then is sent
to the Biologic Water Treating Plant,
which removes dissolves hydrocarbons
and cleans up the produced water
to a certain level. A 12” produced
water pipeline carries the water
from the Biologic Water Treating
Plant to Harmony Platform for ocean
dispersal via diffusers. ExxonMobil's
Hondo Field Water Injection Project
involves both changes to its onshore
facilities and offshore facilities.
The
following changes would be made to
the onshore facility so it can
handle
an increase in produced water from
75 to 90 thousand barrels per day:
(a)
decommission the Biologic Water
Treating Plant, aerobic basins, and
associated facilities;
(b)
install a bypass line around the
Biologic Water Treating Plant and
install pigging facilities in the
line;
(c) decommission
the 4,300-foot, Wavin Fiberglass
Reinforced Pipe of the 12-inch produced
water pipeline; and (d)
install a new 4,300-foot section
of the 12-inch produced pipeline.
The
new 4,300-foot section of pipeline
would be constructed within the previously
disturbed right-of-way (ROW)
and follow all aboveground and belowground
sections, including four aboveground
creek crossings and a 425-foot aboveground
section between creek crossings #2
and #3. The was
designed for future pipeline installations.
The new pipeline section would parallel
the existing Wavin Fiberglass Reinforced
Pipe line and other pipelines (see
Figure 1). Over the creek crossings,
ExxonMobil plans to design the new
pipeline as self-supporting, using
existing foundations and steel supports;
however, depending on the technical
design of the crossings, new foundations
at one or more of the four creek
crossings may need to be installed.
The pipeline rack foundations between
creek crossings #2 and #3 were designed
to accommodate future lines and would
not require any foundation modifications.
The new line would be fabricated
with externally coated carbon steel
pipe with sufficient corrosion allowance
or externally coated carbon steel
with an internal coating.
Figure
1: Location of new pipeline over creek
crossing.
Offshore on Harmony Platform,
ExxonMobil plans to add a vertical
injection water surge vessel, three
water injection pumps, two seawater
transfer pumps, chemical treating
facilities, and other associated
equipment. New platform deck extensions
would be installed to handle the
new equipment (see Figure 2). Approximately
six wells would be drilled or converted
to water injection service.
Figure 2: Offshore Modifications
Description
An ongoing project consisting of three offshore platforms (Hondo,
Harmony and Heritage) that produce oil and gas from the Hondo,
Pescado and Sacate fields. Pipelines are used to transport oil
and gas produced offshore to onshore processing facilities. These
facilities use the processed natural gas onsite to generate electricity
and steam for use onsite. The processed crude oil is pumped into
the All American Pipeline Coastal Line.
Location
ExxonMobil's Las Flores Canyon Facility is located approximately
15 miles west of the City of Santa Barbara on the north side of
U.S. 101.
ExxonMobil Location |
Overhead View of ExxonMobil's Las Flores Canyon Facility
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Offshore Facilities
Platform Hondo
- Lease Location: OCS-P0188 (Santa Ynez Unit)
- Year Installed: 1976 (started operations in 1981)
- Water Depth: 842 feet
- Deck Weight: 8,450 tons
- Total Weight: 27,250 tons
- Fabricated: Oakland, California
- Number of Wells Slots: 28
- Distance from Land: 5.1 miles
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Photo provided by the Minerals Management Service |
Photo provided by the Minerals Management Service |
Platform Harmony
- Lease Location: OCS-P0190 (Santa Ynez Unit)
- Year Installed: 1989 (drilling commenced 7-23-93, first
production 12-04-93)
- Water Depth: 1,200 feet
- Deck Weight: 9,839 tons
- Total Weight: 69,920 tons
- Fabricated: Korea
- Number of Well Slots: 60
- Distance from Land: 6.4 miles
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Platform Heritage
- Lease Location: OCS-P0182 (Santa Ynez Unit)
- Year Installed: 1989 (construction was completed in 1993,
drilling commenced 9-03-93)
- Water Depth: 1,075 feet
- Deck Weight: 9,826 tons
- Total Weight: 60,556 tons
- Fabricated: Korea
- Number of Well Slots: 60
- Distance from Land: 8.2 miles
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Photo provided by the Minerals Management Service |
Pipelines
- 20-inch diameter wet oil from Platform Heritage to Platform
Harmony (7 miles long)
- 12-inch diameter gas from Platform Heritage to Platform Harmony
(7 miles long)
- 20-inch diameter oil from Platform Harmony to Las Flores Canyon
SYU Oil & Gas Processing Facility (10 miles long)
- 12-inch diameter produced water from Las Flores Canyon Oil
& Gas Processing Facility to Platform Harmony (10 miles long)
- 12-inch diameter gas from Platform Harmony to Platform Hondo
(3 miles long)
- 14-inch diameter wet oil from Platform Hondo to Platform Harmony
(3 miles long)
- 12-inch diameter sour gas from Platform Hondo to Las Flores
Canyon SYU Gas Processing Facility (8.5 miles long)
Onshore Facilities
The Las Flores Canyon facility is one of two county-approved consolidation
sites for south county oil & gas facilities. Construction of
the onshore components started in April 1988 and finished in May
1993. Production started later in 1993. The onshore facilities produce
oil, propane, butane, and sulfur products for sale and fuel quality
gas for process needs and power generation.
Las Flores Canyon Oil and Stripping Gas Treating Facility
Project
Overview
- Is located on 113 acres (34 developed acres)
Major Systems:
- Oil-water separation
- Dry oil storage prior to transfer to the All American Pipeline
- Three pipeline booster pumps designed to ship crude at various
rates up to 300 kbpd
- Blending of NGLs into the crude oil stream from gas processing
at the Las Flores Canyon Oil and Gas Processing Facility and
the Stripping Gas Treatment Plant
- Treatment of produced water prior to offshore disposal
- Cogeneration
- Produced gas processing and sulfur removal for use in onsite
cogeneration plant
Las Flores Canyon Oil and Gas Processing Facility (Oil Treating
Plant)
- Dry oil output:
- Current design capacity of 100,000 barrels per day (bpd)
- Permitted capacity with the installation of third tank
is 125,000 bpd
- Receives all wet oil produced in the Santa Ynez Unit and removes
water from the wet oil stream in the oil treating plant.
- Oil Storage - 540,000 barrels (bbl) with additional storage
available at the Gaviota Oil Terminal
- Produced water:
- 60,000 barrels of water per day (bwpd)
- Average annual throughput of 35,000 bpd (ExxonMobil) and
360 bpd POPCO
- NPDES permitted offshore disposal capacity of 92,500 bpd
- Natural Gas:
- 21,000 thousand cubic feet per day (MCFD)
- Limited to 15 MCFPD due to the offshore pipeline capacity
constraints
- Cogenerated Electricity - 49 megawatts (39 megawatts from the
gas-fired turbine and 10 megawatts from the steam turbine)
- Las Flores Canyon Oil and Gas Processing Facility - Permitted
Capacities:
- Dry oil output - 140,000 bpd
- Oil Storage - 540,000 bbl
- Produced water - 87,000 bwpd
- Natural Gas - 21,000 MCFD
- Cogenerated Electricity - 49 megawatts (39 megawatts from
the gas-fired turbine and 10 megawatts from the steam turbine)
- Provides power to the onshore processing facility, and
to the three offshore platforms via subsea cables.
Offsite Pipelines:
- 24-inch diameter onshore pipeline from Las Flores Canyon Oil
& Gas Processing Facility to the Gaviota Pump Station
Powercables:
- Onshore to Platform Heritage - Approximately 17 miles
- Two onshore to Platform Harmony - Approximately 10 miles
- Platform Heritage to Platform Harmony - Approximately 7 miles
- Platform Harmony to Platform Hondo - Approximately 3 miles
Fields/Production History
Santa Ynez Unit
- Location: OCS – Santa Barbara Channel
- Fields: Hondo, Pescado, and Sacate
- Formations: Monterey and Sandstone
- Overall Oil Gravity: 19°
- Oil and Gas Production (Chart)
Hondo Field
- Production Began: 1981
- Oil Information:
- Gas Information:
- Source: Monterey and Sandstone Formations
- Cumulative production through 2000: 280 billion cubic feet
(BCF)
- Percentage of total POCS gas landed in Santa Barbara County:
40%
- Estimated reserves at end of
2004: 463 BCF
Pescado Field
- Production Began: 1993
- Oil Information:
- Source and Gravity:
Monterey Formation 10° - 18° API
Sandstone Formation 30° – 36° API
- Cumulative production through 2000: 84 million barrels
(MMBL)
- Percentage of total Pacific Outer Continental Shelf (POCS)
oil/condensate landed in Santa Barbara County: 15%
- Estimated reserves at
end of 2004: 2.6 MMBL
- Gas Information:
- Source: Monterey and Sandstone Formations
- Cumulative production through 2000: 23 billion cubic feet
(BCF)
- Percentage of total POCS gas landed in Santa Barbara County:
3%
- Estimated reserves at end of
2004: 179 BCF
Sacate Field
- Production Began: 1999
- Oil Information:
- Source and Gravity:
Monterey Formation 9° – 16° API
Sandstone Formation 30° – 36° API
- Cumulative production through 2000: 2 million barrels
(MMBL)
- Percentage of total Pacific Outer Continental Shelf (POCS)
oil/condensate landed in Santa Barbara County: <1%
- Estimated reserves at end of
2004: 58 MBBL
- Gas Information:
- Source: Monterey and Sandstone Formations
- Cumulative production through 2000: 3 billion cubic feet
(BCF)
- Percentage of total POCS gas landed in Santa Barbara County:
<1%
- Estimated reserves at end of
2004: 199 BCF
Product Distribution
- Crude Oil
- Pumped from the onsite Las Flores Canyon transportation
terminal, through the All American Pipeline Coastal Line,
northwest to the Gaviota Pump Station; then
- Placed into the All American Pipeline mainline and routed
to various refineries
- Natural Gas
- Used onsite as a fuel for the cogeneration of electricity.
- Propane
- Destination varies according to season and market demand.
Past Activities
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