Decrease in natural marine hydrocarbon seepage near Coal Oil Point, California, associated with offshore oil production

被引：1
|
作者：
Quigley, DC
Hornafius, JS
Luyendyk, BP
Francis, RD
Clark, J
Washburn, L
机构：
[1] Geco Prakla Field Proc, Houston, TX 77077 USA
[2] Univ Calif Santa Barbara, Inst Crustal Studies, Santa Barbara, CA 93106 USA
[3] Mobil Oil Corp, New Orleans, LA 70113 USA
[4] Univ Calif Santa Barbara, Dept Geol Sci, Santa Barbara, CA 93106 USA
[5] Calif State Univ Long Beach, Dept Geol Sci, Long Beach, CA 90840 USA
[6] Univ Calif Santa Barbara, Dept Geog, Santa Barbara, CA 93106 USA
来源：
GEOLOGY | 1999年 / 27卷 / 11期
关键词：
D O I：
10.1130/0091-7613(1999)027<1047:DINMHS>2.3.CO;2
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
Prolific natural hydrocarbon seepage occurs offshore of Coal Oil Point in the Santa Barbara Channel, California. Within the water column above submarine vents, plumes of hydrocarbon gas bubbles act as acoustic scattering targets, Using 3.5 kHz sonar data, seep distribution offshore of Coal Oil Point was mapped for August 1996, July 1995, and July 1973. Comparison of the seep distributions over time reveals more than 50% decrease in the areal extent of seepage, accompanied by declines in seep emission volume, in a 13 km(2) area above a producing oil reservoir. Declines in reservoir pressure and depletion of seep hydrocarbon sources associated with oil production are the mechanisms inferred to explain the declines in seep area and emission volume.
引用
收藏
页码：1047 / 1050
页数：4
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