时间:2019-01-13 作者:英语课 分类:2007年VOA标准英语(五月)


英语课
By Mil Arcega
Washington
25 May 2007
 


Technology and high gasoline prices are helping 1 to coax 2 hard-to-extract oil from California's oil fields.  Production at some of the state's older oil fields is expected to dry up in about 25 years, but Chevron 3 says new ways to pump thick crude from the ground could more than double their life expectancy 4. VOA's Mil Arcega reports.






Bakersfield's oil field


Bakersfield's oil field



Oil fields outside Bakersfield, California, produce nearly 170 million barrels per year - about 80 percent of the state's oil supply.  Production at most of these wells has been declining for 25 years.  But continuing demand and increasingly high gasoline prices have producers looking for new ways to squeeze every drop.


Chevron petroleum 5 engineer Paul Harness says the latest techniques use soundwaves to pinpoint 6 hidden oil deposits. "The 3-D model tells us what we should expect to get from that well.  Our production information tells us what it's actually making.  If there's a large enough gap, we know exactly what well to work on."


But what they are finding several hundred meters below ground is heavy crude, so thick it takes steam to reduce its viscosity 7.  Chevron engineer Jeff Hatlen says it would have been too expensive to pump the oil out just a few years ago.


"[By diverting the water] just outside of the oil, we can draw down the water and remove its ability to move into the oil column," explained Hatlen.


He says the technique could more than double the life expectancy of California's oil fields, some of which are expected to dry up in 25 years. "It's really about applying technology, benefiting from price environments to allow us to sustain development," he added.  "I suspect we're going to hit recoveries that I couldn't have imagined 5, 10 years ago."


Chevron says the same technology has been used at some of its overseas oilfields to boost production capacity as much as tenfold.   




n.食物的一份&adj.帮助人的,辅助的
  • The poor children regularly pony up for a second helping of my hamburger. 那些可怜的孩子们总是要求我把我的汉堡包再给他们一份。
  • By doing this, they may at times be helping to restore competition. 这样一来, 他在某些时候,有助于竞争的加强。
v.哄诱,劝诱,用诱哄得到,诱取
  • I had to coax the information out of him.我得用好话套出他掌握的情况。
  • He tried to coax the secret from me.他试图哄骗我说出秘方。
n.V形臂章;V形图案
  • He wore shoulderstrap rank slides with sergeant's chevrons.他佩戴标示级别的肩章,上面有中士的V形标志。
  • The chevron or arrow road sign indicates a sharp bend to the left or right.V形或箭头路标表示有向左或向右的急转弯。
n.期望,预期,(根据概率统计求得)预期数额
  • Japanese people have a very high life expectancy.日本人的平均寿命非常长。
  • The atomosphere of tense expectancy sobered everyone.这种期望的紧张气氛使每个人变得严肃起来。
n.原油,石油
  • The Government of Iran advanced the price of petroleum last week.上星期伊朗政府提高了石油价格。
  • The purpose of oil refinery is to refine crude petroleum.炼油厂的主要工作是提炼原油。
vt.准确地确定;用针标出…的精确位置
  • It is difficult to pinpoint when water problems of the modern age began.很难准确地指出,现代用水的问题是什么时候出现的。
  • I could pinpoint his precise location on a map.我能在地图上指明他的准确位置。
n.粘度,粘性
  • The viscosity shows a rather pronounced variation with temperature.温度对粘度的影响十分明显。
  • The reciprocal of viscosity is known as fluidity.粘度的反意就是流动性。
学英语单词
acoustic homing system
address matcher circuit
alphanumeric program
Anicetus
antirheumatoid drug
apparent turbulent stress tensor
aseptic filling
astronomic transit
atlee
automated batch mixing
Bac Giang, Tinh
bioconcentration
bistable polarization
branch coverage testing
brems
bus hut
cant rail
checking book
chrysanthemum leucanthemums
close-to-nature forestry
cobalt slass
coffee black beans
coodes
crested penguins
crystal-controlled
customer evaluation
daryosphere
diffused base transistor
distributed element
ditylenchus
externally-imposed
flower primordia
foresworn
full crystal
gateway charge
geographical classification of 8oils
guardlike
heteromorphic chromosomes
heterosperminous hybridization
histoimmunological
historical jurisprudence
horn cleat
hydroaluminations
iraqgates
knife tool
laughland
lent an ear to
liasons
limit of aperidicity
local buffer storage
lomasome
longitudinal dispersion
low transmission
mazatzal pk.
medical nomenclature
microcode assembler
mild-mannered
mine swept route
Mugila, Mts.
multispectral satellite data
noboes
obv
Osborne, L.
Paranari
patently
payment notice
Perisporiales
pick his steps
price plan
primary vaccination
protocollyris sauteri
pterygomandibular
Puusepp's reflex
raddicle
read-message
real-time data structure
recosting
reverse mottle
RNA probe
rosin adduct
scutellarin
segmented address space
spread for
sudor anglicus
Symes
symmetric game
tank clean-out opening
televisuality
the eight manifestations of infantile convulsion
theophanous
tisiyeh (tasiyeh)
torpedo bombardment aeroplane
tribenzylethyltin
trickle-irrigated
triphenoxazin
two for one twister
unquenches
versche
vica
wear resistant alloy steel
widely spaced stanchions
zapanta