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The West Montalvo Oil Field is a large and productive oil field on the coast of Ventura County, California, in the United States, in and adjacent to the city of Oxnard. Discovered in 1947, it has produced approximately of oil, and retains about 2.2 million recoverable with current technology, in both the onshore and offshore areas. The offshore portion of the field is exploited from wells directionally drilled from onshore near McGrath Lake, from within an enclosure above the high-tide line at McGrath State Beach. Most of the field, both onshore and offshore, is operated by Venoco, Inc., an independent petroleum company based in Denver, with an office in Carpinteria.〔 p. 132, 162〕〔 Hoops, Stephanie (September 2, 2014) ("Ventura County oil field to be sold for $200 million: Developer gets $200M for site in West Montalvo" ) ''Ventura County Star''〕 The West Montalvo field was also the first dry natural gas field of commercial value to be discovered in Ventura County; in its lifetime it has produced over of gas.〔〔DOGGR, p. 289〕 ==Setting== The oil field underlies the portion of coastline just south of the outlet of the Santa Clara River, including several state and county parks (including McGrath State Beach, Mandalay Beach Park, and Oxnard Shores Park). While parts of the oil field are within the city of Oxnard, most of it is within an unincorporated region east of the intersection of Harbor Boulevard and Gonzales Road, a mixed-use area of agricultural fields interspersed with oil wells and associated production and processing facilities. This area was designated a greenbelt through a joint agreement between the cities of Oxnard and Ventura.〔McCartney, Patrick (November 13, 1993) ("Showdown Expected at Greenbelt Hearing: Oxnard" )''Los Angeles Times''〕〔("Greenbelt Program" ) ''Ventura County Resource Management Agency'' Accessed February 22, 2014〕 The terrain is almost all flat, save for berms and sand dunes at the shoreline. Elevations on the field range from sea level to about above sea level, and drainage is to the west and southwest, via a system of canals. Total productive area of the field is , with 200 of that being offshore.〔 Some oil field and power generation facilities are in enclosures within the parks and open spaces. Venoco operates a row of wells near McGrath Lake which drill into the offshore portion of the field; visitors to McGrath State Beach can walk past them along the beach. Reliant Energy's 560-megawatt gas-fired Mandalay Generating Station is north of and adjacent to Mandalay Beach Park. An oil-gas separator adjacent to the Mandalay plant processes gas from the offshore Santa Clara and Hueneme fields and sells the gas to Reliant for use at the power plant.〔(Reliant Energy description of the Mandalay Power Plant )〕 Mandalay Beach Park consists of of land left in its natural state, without amenities, and contains habitat for the endangered snowy plover.〔(Ventura County Parks Division: description of Mandalay Beach Park )〕 Venoco operates one oil well within Mandalay Beach Park, "McGrath 4 Well No. 1218", in a walled enclosure; as the well predated creation of the park, it is allowed to remain. This oil well is one of the most productive in the entire field, producing over of oil in 2009 alone, over .〔(Well 1218 query from California Department of Conservation database )〕 The climate in the region is Mediterranean, with cool, rainy winters and warm, rainless summers, in which the heat is moderated by frequent morning coastal low clouds and fog. Annual precipitation is around , almost all in the winter, and all in the form of rain. The mean annual temperature is 56 to 60 degrees Fahrenheit; freezes occur rarely. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「West Montalvo Oil Field」の詳細全文を読む スポンサード リンク
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