Offshore oil and gas in California

Last updated

All oil drilling into the South Ellwood Offshore field takes place from Platform Holly, about two miles (3 km) offshore in state waters
.mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .geo-multi-punct,.mw-parser-output .geo-inline-hidden{display:none}.mw-parser-output .longitude,.mw-parser-output .latitude{white-space:nowrap}
34deg23'23''N 119deg54'23''W / 34.3898degN 119.9065degW / 34.3898; -119.9065
. PlatformHolly.jpg
All oil drilling into the South Ellwood Offshore field takes place from Platform Holly, about two miles (3 km) offshore in state waters 34°23′23″N119°54′23″W / 34.3898°N 119.9065°W / 34.3898; -119.9065 .
Oil wells on wharves built out over the ocean, Summerland oil field, 1902. SummerlandOilField.jpg
Oil wells on wharves built out over the ocean, Summerland oil field, 1902.
Known oil and gas fields in federal waters, offshore California (Minerals Management Service) CAFederalOffshoreFields.png
Known oil and gas fields in federal waters, offshore California (Minerals Management Service)

Offshore oil and gas in California provides a significant portion of the state's petroleum production. Offshore oil and gas has been a contentious issue for decades, first over the question of state versus federal ownership, but since 1969 mostly over questions of resource development versus environmental protection.

Contents

Notable offshore fields include the Ellwood Oil Field and the Wilmington Oil Field, both of which are partially onshore and partially offshore, and the large Dos Cuadras Field in the Santa Barbara Channel, which is entirely in the federal zone.

State offshore seabed in California produced 37,400 barrels (5,900 m3) of oil per day, and federal offshore tracts produced 66,400 barrels (11,000 m3) of oil per day in November 2008. State and federal offshore tracts together made up 16% of the state's oil production. [1]

Pre-oil industry

Knowledge of the probable existence of oil off the coast of California dates back to the early European explorers who noted oil slicks in the Santa Barbara channel (see Coal Oil Point seep field ). In 1792, when the English explorer James Cook anchored his ship in the Santa Barbara Channel, his navigator George Vancouver wrote that the sea was “... covered with a thick, slimy substance,” and added “... the sea had the appearance of dissolved tar floating on its surface, which covered the ocean in all directions within the limits of our view.” [2]

In 1865, oil geologist Charles Jackson wrote:

“Off the coast of Santa Barbara. The strong smell of petroleum comes from the sea, the oil floating on the water.” [3]

A description of the oil and gas seeps offshore southern California can be found in a report on the California Division of Oil and Gas's website. [4] The report is accompanied by a map, showing the locations of offshore petroleum seeps from Point Arguello (north of Santa Barbara) to Mexico. [5]

Extension of onshore fields

Offshore drilling began in California in 1896, when operators in the Summerland Oil Field in Santa Barbara County followed the field into the ocean by drilling from piers built out over the ocean. At least 187 offshore oil wells were drilled in the Summerland Field by 1902.

The Wilmington Oil Field in Los Angeles and Long Beach was extended offshore into Long Beach Harbor by drilling numerous wells directionally from four artificial islands in the harbor. The THUMS artificial islands, owned by the City of Long Beach, are landscaped with palm trees. [6] A number of other coastal fields were extended offshore in Santa Barbara, Ventura, Los Angeles, and Orange counties, usually by directional drilling.

Ownership of offshore oil and gas

Oil platforms in the Long Beach area. The four small islands shown in Long Beach Harbor are artificial islands for oil and gas wells. Long-beach-san-pedro-map.png
Oil platforms in the Long Beach area. The four small islands shown in Long Beach Harbor are artificial islands for oil and gas wells.
Offshore oil and gas facilities in the Santa Barbara Channel Santa-barbara-map.png
Offshore oil and gas facilities in the Santa Barbara Channel

The issue of state versus federal ownership has a long and contentious history. The US Supreme Court ruled in 1947 that the federal government owned all the seabed off the California coast. However, the US Congress passed the Outer Continental Shelf Act in 1953, which recognized state ownership of the seabed within 3 nautical miles (6 km) of the shore. [7]

In some cases, the state granted ownership of offshore seabed to the adjacent municipalities. In this way Long Beach was granted ownership of Long Beach Harbor in 1911. When the Wilmington field was discovered, Long Beach contracted with oil companies to produce oil from the city-owned offshore part of the field. [8]

Offshore development

Oil production began from a man-made offshore island off Seal Beach in 1953. The first strictly offshore oil field in California was the Belmont Offshore Field, discovered in 1948 1.6 miles (2.6 km) from the shore of Seal Beach; production did not begin until 1954 when a man-made island was built in 40 feet of water for drilling and production equipment. [9]

The first of ten federal offshore lease sales in California was held in 1963.

Santa Barbara spill and aftermath

The Union Oil Company discovered the Dos Cuadras oil field in federal waters of the Santa Barbara Channel in 1968 but in 1969 large quantities of oil began escaping to the sea floor near a drilling well in the field. [10] The resulting oil slick came ashore along 35 miles (56 km) of coastline in Santa Barbara County, and turned public opinion against offshore drilling in California. [11] In response to the oil spill, US Secretary of the Interior Walter Hickel removed 53 square miles (140 km2) of federal tracts near Santa Barbara from oil and gas leasing.

Halting new offshore leasing

California, like other states, owns and controls the mineral resources within 3 nautical miles (6 km) of the coast. Leasing California state seabed is controlled by the California State Lands Commission, which halted further leasing of state offshore tracts after the Santa Barbara oil spill in 1969. [12] In 1994 the California legislature codified the ban on new leases by passing the California Coastal Sanctuary Act, which prohibited new leasing of state offshore tracts.

The federal government continued to hold offshore lease sales through 1982. [13] Then the US Congress directed that no federal funds be used to lease additional federal tracts off the coast of California. Congress repeated the moratorium on new leases every year until September 2008, when an appropriations bill passed the House and Senate without the ban; however, no federal lease sales have been proposed for offshore California since the ban was lifted.

A lawsuit by the state of California prevented the federal government from allowing development on 36 federal leases issued before the congressional moratorium. The federal government voided 29 of the contested leases by repaying $1.1 million in lease bonuses; the seven additional federal leases have not been resolved, but remain inactive because of the litigation. The Minerals Management Service estimates that the seven undeveloped leases contain 1,000,000,000 barrels (0.16 km3) of recoverable oil and 500,000,000,000 cubic feet (14 km3) of recoverable gas. [14]

In 1990, President George H. W. Bush issued an executive moratorium banning new federal leasing through the year 2000 in many offshore areas, including California. In 1998, President Bill Clinton extended the moratorium through 2012. In July 2008, President George W. Bush rescinded the executive order.

Tranquillon Ridge field

Offshore oil and gas facilities off Point Arguello, California Santa-maria-map.png
Offshore oil and gas facilities off Point Arguello, California

Although leasing in state waters has been prohibited since 1994, the law allows exceptions when petroleum under state lands is being drained by nearby wells on non-state tracts; no such exceptions have been made to date. In 2008 both Plains Exploration & Production (PXP) and ExxonMobil offered competing proposals to the state to drill wells into Tranquillon Ridge field, offshore Santa Barbara County. The Tranquillon Ridge field lies partly in state and partly in federal waters. Neither proposal entailed additional offshore surface structures. Plains proposed to drill wells directionally from their existing Irene Platform in federal waters. ExxonMobil proposed to drill directionally from wells onshore in Vandenberg Air Force Base. [15] The Plains Exploration proposal was endorsed by the Environmental Defense Center and by Get Oil Out! [16] [17] On 29 January 2009 the State Lands Commission denied the applications by a 2-1 vote. The reason given for the denial was that "approving the lease request would send a message that additional drilling is possible off the California coast." [18]

In July 2009 Governor Arnold Schwarzenegger proposed allowing oil production from the state portion of Tranquillon Ridge field, as a way to increase state revenue, which would include a $100 million up-front payment to the state. [19] [20] The provision was defeated in the state legislature. [21] On 3 May 2010, governor Schwarzenegger, reacting to the Deepwater Horizon oil spill, withdrew his support for the Tranquillon Ridge drilling plan, stating, "I see on TV the birds drenched in oil, the fishermen out of work, the massive oil spill and oil slick destroying our precious ecosystem." [22]

Current status

Platform Harvest, in the Point Arguello field in federal waters 7 miles (11 km) from Point Conception, has produced more than 73,000,000 barrels (12,000,000 m) of oil and 50,000,000,000 cubic feet (1.4 km) gas. Oil platform.jpeg
Platform Harvest, in the Point Arguello field in federal waters 7 miles (11 km) from Point Conception, has produced more than 73,000,000 barrels (12,000,000 m) of oil and 50,000,000,000 cubic feet (1.4 km) gas.

Despite the long-term bans on new leasing in state (since 1969) and federal waters (since 1984), drilling and production have continued on existing leases, from existing drilling and production platforms.

Nine active offshore drilling and production locations remain in state and municipal waters: one platform and one artificial island in the Santa Barbara Channel, and four artificial islands and three platforms from the offshore portion of the Wilmington Oil Field in San Pedro Bay/Long Beach Harbor. The first artificial offshore island, for Belmont Offshore Field, was removed in 1999. [24]

As of 2020, there is substantial offshore oil and gas production. [25] Twenty seven platforms lie along the Southern California coast from Huntington Beach to Point Conception in Santa Barbara County. Twenty-three offshore drilling and production platforms are in federal waters at depths that range from 100 to 1,200 feet. As of 2009 they produce 22 million barrels of oil and 21 billion cubic feet of gas per year. [26] Four reside in state waters. Many of the platforms have been in place for 30 to 50 years and are not currently producing enough oil to make them worth maintaining. [27]

Decommissioning Oil Platforms

Of the 23 oil platforms surrounding the coast of California, eight are no longer in usage or, due to terminated leases, are not allowed to resume production. The unused oil and gas platforms are in line for decommissioning in the near future. [28] Along with these already abandoned oil platforms, the remaining facilities are expected to also require decommissioning as they reach 30-50 years in production. [29]

As of 2021, the Biden Administration announced that an environmental analysis would be conducted to establish the effects of complete or partial decommissioning of oil and gas platforms. [30] The federal investigation, headed by the BSEE, will review oil facilities and platforms off of the Southern California coast and, subsequently, direct future action towards these offshore oil platforms.

The oil platforms are surrounded by various species of fish and wildlife, topical to California, that could be impacted by the complete removal of the platform structure. [27] Thus, alternative methods have been discussed and reviewed in place of traditional decommissioning. This includes the Rigs-to Reefs program that proposes to only partially remove parts of the oil platform, keeping a majority of the habitat intact for the wildlife. [31]

Future potential

Several large, undeveloped offshore oil fields have been discovered; see first map in this article. Seven undeveloped leases are estimated to contain one billion barrels (0.16 km3) of recoverable oil and 500 billion cubic feet (14 km3) of recoverable gas. The total potential petroleum resource in offshore central California may be 4 to 6 billion bbls oil and 5 to 7 trillion cubic feet of gas, per 1996 estimates by USGS and MMS. [32]

Most of these fields are north of Point Conception and are heavy oil. Some of these oil reserves could be produced by directional drilling from existing platforms. As of 2014, political issues have prevented new development, but these fields contain a large and significant resource for the future. [33]

In 2020, the Trump administration had a proposal under development to outline potential sales near Southern California and other coastal areas of the United States. [34]

See also

Related Research Articles

<span class="mw-page-title-main">History of the petroleum industry in the United States</span>

The history of the petroleum industry in the United States goes back to the early 19th century, although the indigenous peoples, like many ancient societies, have used petroleum seeps since prehistoric times; where found, these seeps signaled the growth of the industry from the earliest discoveries to the more recent.

<span class="mw-page-title-main">Oil platform</span> Offshore ocean structure with oil drilling and related facilities

An oil platform is a large structure with facilities to extract and process petroleum and natural gas that lie in rock formations beneath the seabed. Many oil platforms will also have facilities to accommodate the workers, although it is also common to have a separate accommodation platform linked by bridge to the production platform. Most commonly, oil platforms engage in activities on the continental shelf, though they can also be used in lakes, inshore waters, and inland seas. Depending on the circumstances, the platform may be fixed to the ocean floor, consist of an artificial island, or float. In some arrangements the main facility may have storage facilities for the processed oil. Remote subsea wells may also be connected to a platform by flow lines and by umbilical connections. These sub-sea facilities may include one or more subsea wells or manifold centres for multiple wells.

<span class="mw-page-title-main">Offshore drilling</span> Mechanical process where a wellbore is drilled below the seabed

Offshore drilling is a mechanical process where a wellbore is drilled below the seabed. It is typically carried out in order to explore for and subsequently extract petroleum that lies in rock formations beneath the seabed. Most commonly, the term is used to describe drilling activities on the continental shelf, though the term can also be applied to drilling in lakes, inshore waters and inland seas.

<span class="mw-page-title-main">History of the petroleum industry in Canada (frontier exploration and development)</span>

Canada's early petroleum discoveries took place near population centres or along lines of penetration into the frontier.

<span class="mw-page-title-main">Rincon Island (California)</span> Artificial island for oil well drilling offshore of Ventura County, California

Rincon Island is a small 2.3-acre artificial island located off Mussel Shoals in Ventura County, California on public land leased from the California State Lands Commission (CSLC). The island is situated approximately 3,000 feet (910 m) offshore in 55 feet (17 m) of water. The island was constructed in 1958 for the specific purpose of well drilling and oil and gas production. It is near the seaside communities of Mussel Shoals and La Conchita. The island is connected to the mainland by the Richfield Pier.

<span class="mw-page-title-main">1969 Santa Barbara oil spill</span> Oil platform blow-out fouled the coast of California resulting in environmental legislation

The Santa Barbara oil spill occurred in January and February 1969 in the Santa Barbara Channel, near the city of Santa Barbara in Southern California. It was the largest oil spill in United States waters at the time. It remains the largest oil spill to have occurred in the waters off California.

<span class="mw-page-title-main">Rigs-to-Reefs</span> Program for converting decommissioned offshore oil and petroleum rigs into artificial reefs

Rigs-to-Reefs (RTR) is the practice of converting decommissioned offshore oil and petroleum rigs into artificial reefs. Such biotic reefs have been created from oil rigs in the United States, Brunei and Malaysia. In the United States, where the practice started and is most common, Rigs-to-Reefs is a nationwide program developed by the former Minerals Management Service (MMS), now Bureau of Safety and Environmental Enforcement (BSEE), of the U.S. Department of the Interior.

<span class="mw-page-title-main">United States offshore drilling debate</span> Ongoing debate in the United States

The United States offshore drilling debate is an ongoing debate in the United States about whether, the extent to which, in which areas, and under what conditions, further offshore drilling should be allowed in U.S.-administered waters.

<span class="mw-page-title-main">Ellwood Oil Field</span> Partially active, adjoining Goleta, California

Ellwood Oil Field and South Ellwood Offshore Oil Field are a pair of adjacent, partially active oil fields adjoining the city of Goleta, California, about twelve miles (19 km) west of Santa Barbara, largely in the Santa Barbara Channel. A richly productive field in the 1930s, the Ellwood Oil Field was important to the economic development of the Santa Barbara area. A Japanese submarine shelled the area during World War II. It was the first direct naval bombardment of the continental U.S. since the Civil War, causing an invasion scare on the West Coast.

<span class="mw-page-title-main">Coal Oil Point seep field</span> Marine petroleum seep area near Goleta, California

The Coal Oil Point seep field (COP) in the Santa Barbara Channel offshore from Goleta, California, is a marine petroleum seep area of about three square kilometres, within the Offshore South Ellwood Oil Field and stretching from the coastline southward more than three kilometers (1.9 mi). Major seeps are located in water depths from 20 to 80 meters. The seep field is among the largest and best studied areas of active marine seepage in the world. These perennial and continuous oil and gas seeps have been active on the northern edge of the Santa Barbara Channel for at least 500,000 years. The combined seeps in the field release about 40 tons of methane per day and about 19 tons of reactive organic gas ; about twice the hydrocarbon air pollution released by all the cars and trucks in Santa Barbara County in 1990. The liquid petroleum produces a slick that is many kilometres long and when degraded by evaporation and weathering, produces tar balls which wash up on the beaches for miles around.

<span class="mw-page-title-main">Offshore oil and gas in the United States</span> Large portion of oil and gas supply

Offshore oil and gas in the United States provides a large portion of the nation’s oil and gas supply. Large oil and gas reservoirs are found under the sea offshore from Louisiana, Texas, California, and Alaska. Environmental concerns have prevented or restricted offshore drilling in some areas, and the issue has been hotly debated at the local and national levels.

<span class="mw-page-title-main">Offshore drilling on the Atlantic coast of the United States</span>

Offshore drilling for oil and gas on the Atlantic coast of the United States took place from 1947 to the early 1980s. Oil companies drilled five wells in Atlantic Florida state waters and 51 exploratory wells on federal leases on the outer continental shelf of the Atlantic coast. None of the wells were completed as producing wells. All the leases have now reverted to the government.

<span class="mw-page-title-main">Summerland Oil Field</span> Oil field near Santa Barbara, California

The Summerland Oil Field is an inactive oil field in Santa Barbara County, California, about four miles (6 km) east of the city of Santa Barbara, within and next to the unincorporated community of Summerland. First developed in the 1890s, and richly productive in the early 20th century, the Summerland Oil Field was the location of the world's first offshore oil wells, drilled from piers in 1896. This field, which was the first significant field to be developed in Santa Barbara County, produced 3.18 million of barrels of oil during its 50-year lifespan, finally being abandoned in 1939-40. Another nearby oil field entirely offshore, discovered in 1957 and named the Summerland Offshore Oil Field, produced from two drilling platforms in the Santa Barbara Channel before being abandoned in 1996.

<span class="mw-page-title-main">Offshore oil and gas in the Gulf of Mexico (United States)</span> Major petroleum-producing area

Offshore oil and gas in the Gulf of Mexico is a major source of oil and natural gas in the United States. The western and central Gulf of Mexico, which includes offshore Texas, Louisiana, Mississippi, and Alabama, is one of the major petroleum-producing areas of the United States. Oil production from US federal waters in the Gulf of Mexico reached an all-time annual high of 1.65 million barrels per day in 2017. Oil production is expected to continue the upward trend in 2018 and 2019, based on ten new oil fields which are planned to start production in those years. According to the Energy Information Administration, "Gulf of Mexico federal offshore oil production accounts for 15% of total U.S. crude oil production and federal offshore natural gas production in the Gulf accounts for 5% of total U.S. dry production."

<span class="mw-page-title-main">Dos Cuadras Offshore Oil Field</span>

The Dos Cuadras Offshore Oil Field is a large oil and gas field underneath the Santa Barbara Channel about eight miles southeast of Santa Barbara, California. Discovered in 1968, and with a cumulative production of over 260 million barrels of oil, it is the 24th-largest oil field within California and the adjacent waters. As it is in the Pacific Ocean outside of the 3-mile tidelands limit, it is a federally leased field, regulated by the U.S. Department of the Interior rather than the California Department of Conservation. It is entirely produced from four drilling and production platforms in the channel, which as of 2009 were operated by Dos Cuadras Offshore Resources (DCOR), LLC, a private firm based in Ventura. A blowout near one of these platforms – Unocal's Platform A – was responsible for the 1969 Santa Barbara oil spill that was formative for the modern environmental movement, and spurred the passage of the National Environmental Policy Act.

<span class="mw-page-title-main">Lompoc Oil Field</span> Oil field in California, United States

The Lompoc Oil Field is a large oil field in the Purisima Hills north of Lompoc, California, in Santa Barbara County. Discovered in 1903, two years after the discovery of the Orcutt Oil Field in the Solomon Hills, it is one of the oldest oil fields in northern Santa Barbara County, and one of the closest to exhaustion, reporting only 1.7 million barrels (270,000 m3) of recoverable oil remaining out of its original 50 million barrels (7,900,000 m3) as of the end of 2008. Its sole operator is Sentinel Peak Resources, who acquired it from Freeport-McMoRan. In 2009, the proposed decommissioning and habitat restoration of the 3,700-acre (15 km2) field was part of a controversial and so-far unsuccessful deal between Plains, several environmental groups, Santa Barbara County, and the State of California, to allow Plains to carry out new offshore oil drilling on the Tranquillon Ridge, in the Pacific Ocean about twenty miles (32 km) southwest of the Lompoc field.

Economic effects of the <i>Deepwater Horizon</i> oil spill

This article covers the effect of the Deepwater Horizon disaster and the resulting oil spill on global and national economies and the energy industry.

<span class="mw-page-title-main">Carpinteria Offshore Oil Field</span>

The Carpinteria Offshore Oil Field is an oil and gas field in Santa Barbara Channel, south of the city of Carpinteria in southern California in the United States. Discovered in 1964, and reaching peak production in 1969, it has produced over 106 million barrels of oil in its lifetime, and retains approximately 2 million barrels in reserve recoverable with present technology, according to the California State Department of Natural Resources. Currently the field is produced from three drilling platforms four to five miles offshore, within Federal waters outside of the tidelands zone. Two of the platforms are operated by Pacific Operators Offshore LLC (PACOPS), the operating arm of Carpinteria-based Carone Petroleum; the other platform is operated by Dos Cuadras Offshore Resources (DCOR). The Carpinteria field is the 50th largest field in California by total original oil in place, as of the end of 2008.

<span class="mw-page-title-main">California oil and gas industry</span> Oil and gas industry of the US state of California

The California oil and gas industry has been a major economic and cultural component of the US state of California for over a century. Oil production was a minor factor in the 19th century, with kerosene replacing whale oil and lubricants becoming essential to the machine age. Oil became a major California industry in the 20th century with the discovery on new fields around Los Angeles and the San Joaquin Valley, and the dramatic increase in demand for gasoline to fuel automobiles and trucks. In 1900 California pumped 4 million barrels (640,000 m3), nearly 5% of the national supply. Then came a series of major discoveries, and the state pumped 100 million bbl (16 million m3) in 1914, or 38% of the national supply. In 2012 California produced 197 million bbl (31 million m3) of crude oil, out of the total 2,375 million bbl (378 million m3) of oil produced in the US, representing 8.3% of national production. California drilling operations and oil production are concentrated primarily in Kern County, San Joaquin Valley and the Los Angeles basin.

<span class="mw-page-title-main">2021 Orange County oil spill</span> Pipeline leak on Southern California seabed

The Orange County oil spill on October 1, 2021, is an oil spill that deposited crude oil onto popular Southern California beaches on the West Coast of the United States. While residents reported smelling fumes, a ship noticed an oil slick that evening and reported it to federal authorities. When oil from an underwater pipeline in the waters of coastal Orange County began washing ashore, officials in Huntington Beach closed the typically crowded beach in the evening of October 2. The U.S. Coast Guard estimated that spill covered 8,320 acres (3,370 ha) of the ocean's surface as they monitored it several times daily from the air. Investigations found a 17.7-mile (28.5 km) pipeline connecting offshore oil platforms with the shore had been displaced by being dragged by a ship's anchor.

References

  1. California Department of Conservation: Monthly oil and gas production and injection report, November 2008, PDF file, downloaded 17 February 2009.
  2. R.F. Yerkes, H.C. Wagner, and K.A. Yenne (1969) Petroleum development in the region of the Santa Barbara Channel, US Geological Survey, Professional Paper 679-B, p.14.
  3. Charles T. Jackson, “Petrolia,” San Francisco Alta California, 2 August 1865, p.1.
  4. [ permanent dead link ] California Offshore Oil Seeps Report
  5. California Offshore Oil Seeps from Point Arguello to Mexico
  6. City of Long Beach: Historical - oil operations Archived May 27, 2010, at the Wayback Machine , accessed 30 Apr. 2009.
  7. Edgar Wesley Owen (1975) Trek of the Oil Finders, American Association of Petroleum Geologists, Memoir 6, p.801.
  8. Walker A. Tompkins, Little Giant of Signal Hill (Englewood Cliffs, N.J.: Prentice-Hall, 1964) p.112-115.
  9. M.B. Smith and F.J. Schambeck (1966) “Petroleum and natural gas” in Mineral Resources of California, California Division of Mines and Geology, Bulletin 191, p.321-322.
  10. Edgar Wesley Owen (1975) Trek of the Oil Finders, American Association of Petroleum Geologists, Memoir 6, p.689-690.
  11. Keith C. Clarke and Jeffrey J. Hemphill, "The Santa Barbara oil spill: a retrospective,", Yearbook of the Association of Pacific Coast Geographers, 2002, v.64, PDF file, downloaded 2 January 2010.
  12. "Welcome to the State Controller's Website" (PDF). www.sco.ca.gov. Archived from the original (PDF) on 2 February 2009. Retrieved 19 October 2022.
  13. Congress Allows Moratorium on Offshore Drilling to Expire, PDF file, retrieved 31 July 2012.
  14. Minerals Management Service: Undeveloped leases, accessed 29 July 2009.
  15. California State Lands Commission: Proposed Tranquillon Ridge oil and gas leases, accessed 9 February 2009. Archived February 3, 2009, at the Wayback Machine
  16. Nick Welsh, "SB enviros endorse offshore oil proposal," Santa Barbara Independent, 16 April 2008, accessed 9 February 2009.
  17. Environmental Defense Center: Fact sheet, PDF file, downloaded 9 February 2009.
  18. County of Santa Barbara Planning and Development, Energy Division: PXP Tranquillon Ridge and Pt. Pedernales, accessed March 18, 2014.
  19. Kurtis Alexander, "State plan for Santa Barbara oil drilling could set precedent for entire coast", San Jose Mercury News, 23 July 2009.
  20. Santa Maria Times, "Local oil drilling part of state budget deal" [ dead link ], 23 July 2009.
  21. Reuters, California kills offshore oil lease project, 25 July 2009.
  22. Daniel B. Wood (4 May 2010). "Citing BP oil spill, Schwarzenegger drops offshore drilling plan". Christian Science Monitor . Retrieved 6 May 2010.
  23. Minerals Management Service
  24. California State Lands Commission, Belmont Island decommissioning project, May 2002.
  25. Kornei, Katherine (5 March 2020). "The Ecological Costs of Removing California's Offshore Oil Rigs". Eos. Retrieved 22 October 2020.
  26. Bureau of Ocean Energy management, Pacific region facts and figures
  27. 1 2 "Rigs to Reefs". Newswise. California State University | Chancellor's Office. 4 June 2020. Retrieved 27 October 2020.
  28. "Federal Register :: Request Access". unblock.federalregister.gov. Retrieved 23 August 2022.
  29. Xia, Rosanna; Rust, Susanne; Chabria, Anita (10 October 2021). "California's offshore oil rigs are decades old, and industry resists decommissioning them". Los Angeles Times. Retrieved 23 August 2022.
  30. Monsell, Kristen. "Biden Administration Announces Decommissioning of Oil Rigs Off California". Center for Biological Diversity. Retrieved 23 August 2022.
  31. Schroeder, Donna M; Love, Milton S (1 January 2004). "Ecological and political issues surrounding decommissioning of offshore oil facilities in the Southern California Bight". Ocean & Coastal Management. 47 (1): 21–48. doi:10.1016/j.ocecoaman.2004.03.002. ISSN   0964-5691.
  32. M. Tennyson and C. Isaacs, "Geologic Setting and Petroleum Geology of Santa Maria and Santa Barbara basins, coastal California", in The Monterey Formation : from rocks to molecules, 2001, Columbia University Press. ISBN   0231105843 . Google Books preview
  33. Oil Fields of the Santa Maria Basin and Adjacent Offshore Areas, California, by Greg Croft Inc. Article includes a map of known oilfields offshore of Santa Barbara County. Accessed 03/18/2014
  34. Dlouhy, Jennifer A (9 December 2020). "Trump Charts Sale of Offshore Oil Rights From California to Gulf". Bloomberg Green. Retrieved 11 December 2020.