-
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2011-3-12
11:42:33http://www.cnki.net/kcms/detail/13.1093.TE.20110312.1142.005.html
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0.01 mm 43.2 h 4 0.050.12 mm
2.2
2 3
3
30-1 21-1B 30-1 21-1B 3.1
30-1 21-1B 4 3 30-1 21-1B 5
3 1~3 12 90 m3 3 200 m40 0.5 ~1.0 m/s
1
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0102030405060
30 60 90 120 150 180 210 240 270 300 330 360
/ km
/d
05
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0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12
/mm
/d
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-
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5 30-1 21-1B
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4
2 7 30-1
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Vacuum-drying technique applied in Panyu-Huizhou Submarine Gas
Pipeline
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2 30-1
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30-1 21-1B
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0.07
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.[J].200521(8)30-32.
.[J].200625(10)26-29.
(2010-08-05)
[1]
[2]
1979 2002 [email protected]
30-1 4 30-1
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3OIL & GAS STORAGE AND TRANSPORTATION
OGSTMar.25,2011 Vol.30 No. 3 Total 267
www.yqcy.net
OIL & GAS STORAGE AND TRANSPORTATION(MONTHLY)
Vol. 30 No. 3 (Total 267) Mar. 25, 2011
ABSTRACTS
INTEGRITY / TRANSPORTATION PROCESS / EXPERIMENT &
RESEARCHEvaluation on explosion consequence caused by leakage of
long-distance gas pipelineChang LiangShuai JianZhou Xiaolianget
alOGSTVol. 30 No. 3, pp. 161165, 3/25/2011. ISSN 1000-8241In
ChineseGas pipeline leaks due to various factors such as
corrosionnatural destructionhuman destruction and its own defects
etcin which the vapor cloud explosion will induce the most serious
consequences of pipeline failure. In order to assess the material
losscasualties and property damage accurately in the explosion
consequencethree kinds of quantitative evaluation methods for the
consequences of failure are compared and analyzed to determine
their application conditions and the application scopes combined
with practical engineering cases. Results show that the assessment
procedure in API 581 evaluation model is clear and concise with
complete and wide application rangecompared with the evaluation
model and overpressure-impulse evaluation model in ASME
B31.8S-2001which gives a guide for pipeline risk assessment and
integrity management.Key wordslong-distance gas pipelinevapor cloud
explosionrisk assessmentconsequences modelintegrity managementChang
LiangCNPC Research Institute of Engineering
TechnologyTianjin300451.Tel022-66316907Emailiamfi
[email protected] evaluation and suggestion on shutdown
and restart for Qinhuangdao-Beijing Oil PipelineMiao QingSong
JianheGao Guopinget alOGSTVol. 30 No. 3, pp. 166169, 3/25/2011.
ISSN 1000-8241In ChineseQinhuangdao-Beijing Oil Pipeline is closely
running at the minimum specifi ed throughputand its fl ow safety
issue is of great concern. In the light of lacking of quantitative
evaluation resultsthe safety evaluation of shutdown and restart for
Qinhuangdao-Beijing Oil Pipeline operated under the conditions of
current throughput and the allowable shutdown time is carried out
by means of the crude oil pipeline shutdown and restart congelation
probability calculation softwareand the suggestion on reasonably
distributing safety margin between stations is put forward.
Besidesthe flow safety evaluation results and the feasibility in
optimizing process parameters between stations are discussed. The
safety for most of the stations in Qinhuangdao-Beijing Oil Pipeline
are satisfactory from most of months to the yearand the reasonable
allocation of safety margin can be made by reducing the inlet
temperature or extending the shutdown time and other methods. The
results can provide a guaranty to the economic transportation for
Qinhuangdao-Beijing Oil Pipeline under the precondition of fl ow
safety. Key wordsoil pipelinefl ow safetyshutdown and
restartcongelationoptimizationevaluationMiao QingChina University
of Petroleum
(Beijing)Beijing102249.Tel0316-2173696Emailmiaoqing@petrochina.com.cnModeling
theory of online and offl ine simulationLi YingdongXu HuiLiu
Chunyanget alOGSTVol. 30 No. 3, pp. 170172, 3/25/2011. ISSN
1000-8241In ChineseThe online real-time monitoring system and offl
ine training model for Yanan-Xian Products Pipeline are built by
using SPS dynamical simulation software from GL Company. It is
required to obtain the key data from SCADA system to drive the
model in the online real-time system. The SPS online simulation is
based on the black box theory. It makes use of the discharge
pressuresuction pressurefl ow ratetemperature and other data to do
the hydraulic simulation. The simulation results can be used for
instrument analysisleak detection and locationpig tracingprediction
of pressuretemperature and fl ow rate at any point of the pipeline.
The online real-time simulation can provide advice for the
starting/shutting down operationand it is a valuable reference to
understand the pipeline hydraulics.Key wordsonline simulationoffl
ine simulationYanan-Xian Products Pipelinetheorywhite boxblack
boxLi YingdongCNOOC Hainan Natural Gas
Co.LimitedHaikouHainan570105.Tel0898-68523001Emailhnlyd@126.comVacuum-drying
technique applied in Panyu-Huizhou Submarine Gas PipelineKang
YilongZhang RengongLai Junchenget alOGSTVol. 30 No. 3, pp. 173176,
3/25/2011. ISSN 1000-8241In ChineseBecause the submarine gas
pipeline in Panyue 30-1 Gasfi eld is characterized by a long
distance and large diametertherefore vacuum drying technique is
chosen as the method to dry the pipeline in pre-commissioning
stage. Four factors that will impact
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OIL & GAS STORAGE AND TRANSPORTATION
OGST
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Mar.25,2011 Vol.30 No. 3 Total 267
the vacuum drying time in pipe lengthpipe diameternominated
suction speed of pump and thickness of water fi lm are analyzed and
an optimization method is presented. For the pump optimizationthe
costconstruction progressrisk and other factors need to be
considered before the determination of the pump. Water fi lm
thickness optimization adopts the dried air produced by drying
machine as the propulsion medium for the spill sphere. The more
desiccated the medium isthe better the effect will be. Considering
power range of compressors and the capacity of the spill sphere
trapmore empty spheres should be arranged and the travelling speed
of the spheres should be limited. The vacuum drying practice shows
the correctness of the drying prediction time and the existed
experience will be a good reference for the similar projects in
submarine vacuum drying technique.Key wordsgas pipelinesubmarine
pipelinevacuum drying techniquedrying timeoptimizationKang
YilongOffshore Oil Engineering Co.
[email protected]
Selection on viscosity reducer for extra-heavy oil and corrosion
inhibition effectiveness evaluationWang Xia and Bai YuanliOGSTVol.
30 No. 3, pp. 177179, 3/25/2011. ISSN 1000-8241In
ChineseExtra-heavy oil is featured with gelatinationhigh content
asphaltenehigh viscosityhigh density and poor fl owability. At
present viscosity reducer is mainly used to cut down its viscosity.
Howeverthe solution of viscosity reducer will probably tend to
corrode oil pipeline. In allusion to the property of extra-heavy
oil produced from Henan Oilfiledorthogonal experimental method is
adopted to research the viscosity reducing effectiveness of
emulsifi ed viscosity reducer AE and EC and oil-soluble viscosity
reducer AC. Static corrosion weight loss method are applied to
evaluate the corrosion level of the above 3 viscosity reducers on
N80 steel in order to select appropriate candidate. Results from
the orthogonal experiment display that the best viscosity reducer
is EC with a 99.81% of viscosity reducing rate when it is used at
70 with a 0.3% of addition volume and a 64 of oil-water
ratioresults from corrosion experiment show that AE and EC have
sound corrosion inhibitation effectiveness and the corrosion
inhibitation rates of the two reducers are up to 80.42% and
85.85%respectively.Key wordsoil pipelineextra-heavy oilviscosity
reducerselectioncorrosion inhibitationcorrosionevaluationWang
XiaDepartment of Materials Science and EngineeringSouthwest
Petroleum
UniversityChengduSichuan610500.Tel13881705708Emailswpi_wx@126.comMixing
experiment and critical proportion calculation for contamination of
productsLi HuiduoLiang JinghuaZhu Fenget alOGSTVol. 30 No. 3, pp.
180182, 3/25/2011. ISSN 1000-8241In ChineseContamination treatment
is one of the key links of operation management for long-distance
products pipeline. Based on the method of mixing some or all
contamination back to the pure oilaccording to the quality control
indicators and testing methods regulated by GB 17930-2006 motor
gasoline and GB/T 19147-2003 motor diesel fuelcombined with the
actual operating situation of batch transportation pipeline in
Chinaa mixing experiment of batch transportation oil is carried out
for the particular pipeline. The results show that in diesel mixed
with gasolinethe most sensitive quality item to mixing proportion
is the closed fl ash pointin gasoline mixed with dieselthe signifi
cant infl uence on quality item is fi nal boiling pointresearch
octane numberanti-explosion indexand the sensitivity of the fi nal
boiling point is the most prominent. According to the testing
resultscritical mixing proportion calculation formula available for
the actual production is recommended with the sensitive quality
item as the control target.Key wordsproducts pipelinebatch
transportationcontaminationmixingexperimentcritical mixing
proportioncalculation formulaLi HuiduoPetroChina Pipeline R&D
[email protected]
DESIGN & CALCULATION / INSPECTION TECHNOLOGYInfl uence of
reduced pipeline on the batch transportation of cold-hot
contaminated crude oilLu QinliDu MingjunMa Guiyanget alOGSTVol. 30
No. 3, pp. 183186, 3/25/2011. ISSN 1000-8241In ChineseThe governing
equation is established regarding the effect of hydraulic transient
on the contamination ratio of the cold-hot contaminated crude oil
batch transportation due to reduced pipeline or elevation. FLUENT
software is applied to simulate the cold-hot crude oil passing
through the reduced pipeline where the effect of the transportation
sequence and the velocity are investigated. The study shows that
the contamination length grows faster in the reduced pipelinewhile
the length grows slower in the expanded pipeline. The contamination
lengths are large for both cases of Russian Oil fi rst and Daqing
Oil fi rst. Andthe contamination ratio vibrates at the joint
location of an expanded pipeline with regard to the cross-sections
on upstream pipeline.Key wordscrude oil pipelinehydraulic
transientcold-hot crude oilbatch transportationcontamination
rationumerical calculationLu QinliLiaoning Shihua
UniversityFushunLiaoning113001.Tel15841344152Emailluqinli123@126.comTemperature
fi eld simulation of heavy oil dehydration sediment tankHan
HaicangOGSTVol. 30 No. 3, pp. 187191, 3/25/2011. ISSN 1000-8241In
ChineseLiaohe Oilfield mainly produces heavy oil. The oil is
pipelined from oil well to complex station for dehydration
processing. Howeverthe sediment tank structure and oil/water
velocity field are differentwhich result in the fluctuation of
temperature