An Overview of California’s Produced Water
Tim Kustic, State Oil and Gas SupervisorCalifornia Division of Oil, Gas, and Geothermal Resources
Organizational Structure
Governor’s Office
Natural Resources Agency
Department of Conservation
Division of Oil, Gas, and Geothermal Resources
…Supervisor shall so supervise the drilling, operation, maintenance, and abandonmentof wells and the operation, maintenance, and removal or abandonment of tanks andfacilities…
Division Mandates
...so as to prevent, as far as possible, damage to life, health, property, and natural resources; damage to underground oil and gas deposits from infiltrating water… prevent damage…and waste… to underground and surface waters.
Division Mandates
…Supervisor shall also supervise… to permit the owners… to utilize all methods… and practices known to the industry for the purpose of increasing the ultimate recovery.
Division Mandates
To best meet oil and gas needs in this state, the Supervisor shall administer this division so as to encourage the wise development of oil and gas resources.
Division Mandates
CA Oil porduction
Well Construction
Well Plugging and Abandonment
UNDERGROUND INJECTION CONTROL (UIC)
Subsidence
2012 Top 10 Oil Producing Fields
Field Name Total Oil Produced
Total Water Produced API Gravity
API Gravity
TDS Average
TDS Range Water Cut Injection
(million bbl) (million bbl) (1000 Acre Feet) Range Average (ppm) (1000 ppm) (%) (million bbl)
1 Midway-Sunset 29.30 224.21 28.90 8-40 23.4 8,924 1-49 88.4 218.7
2 Kern River 26.19 315.11 40.62 11-14 12.9 2,330 0.4-11.1 92.3 82.7
3 Belridge, South 23.62 305.29 39.35 8-47 23.4 22,525 2.6-39 92.8 314.5
4 Elk Hills 13.93 167.63 21.61 17-39 29.8 25,971 4.6-43 92.3 173.2
5 Cymric 13.69 107.04 13.80 10-46 17.6 13,591 3-24 88.7 57.5
6 Wilmington 13.26 492.14 63.44 9-31 8.9 28,705 20-36 97.4 530.3
7 Lost Hills 10.74 134.24 17.30 8-42 23.6 21,729 1.2-56 92.6 135.8
8 San Ardo 7.27 114.42 14.75 10-15 12.0 7,200 7200 94.0 92.6
9 Coalinga 5.54 57.78 7.45 8-31 17.6 5,467 3-14 91.2 45.0
10 Ventura 5.08 50.15 6.46 20-45 29.9 20,018 17.1-23 90.8 55.6
Water Injection
Total Produced Water Injection: 2.7 Billion bbls/yr
Enhanced Oil Recovery (EOR): 1.9 Billion bbls/yr (70%)o Water Flood - 50%o Steam Flood - 13%o Cyclic Steam - 6%
Water Disposal (WD): .8 Billion bbls/yr (30%)
Non-Injected Produced Water
Total Produced Water Non-Inject: 866 Million bbls/yr
Evaporation - Percolation: 624 Million bbls/yr (72%)
Freshwater Use: 198 Million bbls/yr (23%)
Sewer Systems: 44 Million bbls/yr (5%)
Arroyo Grande Oilfield, San Luis Obispo County
HYDRAULIC FRACTURE STIMULATION
www.conservation.ca.gov