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油田化学专业英语

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2021-02-08 16:40
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2021年2月8日发(作者:陶)


石油科技英语



词汇、结构和书面表达


(20%)




1





D. All of




these rock types came from particular environment of deposition.



2



The classic particles are



B. obtained



from the original rock.



3



General fold terminology


A. is related to




elements of individual feature.


4



Inflection occurs



D. when




concavity changes to convexity.



5



Concentric folds consist of strata parallel to



C. each other



.


6



Applied seismics is derived to some extent from seismology,



A. which




is the recording and interpretation of earthquake waves.


7



The most



A. modern




technology at the Rig Site should be used.


8




B. Fishing




tools are needed at the rig site to recover any part of the drilling that fails.


9




B. Step-by-step


, chronological drilling procedures form the heart of the well plan.


10



Special- purpose computers were



D. so expensive




that one company only owned a few in the past.


11



A



C. digital




computer is a counting device that operates on discrete data.


12



Digital computers are designed for



B. both special and general uses



.


13



The artist asked that his painting



A. be




displayed at the National Gallery.


14



The relationship between oil exploration and production is



A. stronger than ever




.


15



Earth structure is fundamental to an understanding of the study of earth processes,


A. and







are important in exploring for oil.


16



All tubulars are transferred directly and automatically from horizontal pipe racks to the center line of the hole or


D. vice versa


.




17



Crude oil and natural gas are the raw



A. materials




of the petroleum industry.


18



When petroleum is first taken



C. from




the ground it is not very useful.


19



The basic problem in petroleum geochemical studies is



B. that




the generation processes cannot be reliably duplicated in the laboratory.


20



Darcy’s law describe


s the



D. rate




of flow of fluids through rocks.


21



The geophysical methods used in



A. investigating




the shallow features of the earth's crust vary in accordance with the physical properties of the rocks.


22



The static methods in



B. which




the distortions of a static physical field are detected are used.


23



When petroleum is first taken



C. from




the ground it is not very useful.


24



The declining cost and improved reliability of devices



A. allow




a new approach to computer maintenance.


25



In the morning customers receives a package



D. including




a replacement part installation instructions.


26



Computers can be



C. made of



modules called field replaceable units.


27



Petroleum is a




B. mixture




of many oils, but they can be separated in the way we have described.


28



The petroleum is made very hot and passed



C. into




the bottom of a tall tower.


29



Solution polymerization-This is, perhaps, the



D. oldest




process still in use.



30



Near the end of the reaction, a



C. terminating




agent is added to stop polymerization.



31




A. Soon after




the tube has been inserted into the main, it is gradually turned toward the gas flow.


32



This rate can no longer be maintained. This rate can be maintained



D. until it can't be




.


33



In some cases it is



A. superior




to separate and to remove water from the well fluid before it flows through pressure reductions.


34



Flow conditions become


D. more complicated




for shell and tube heat exchangers.


35



Measurement



B. while




drilling is the downhole measurement of important parameters and the simultaneous transmission of those measurements to the surface.


36



Orchestral instruments



C. can be grouped




under the following types: String, woodwind, brass, and percussion.


37




D. Deep




depressions in the ocean floor are called trenches.


38




A. That




xenon could not form chemical compounds was once believed by scientists.


39



Amplifiers such as those in computers and sound-reproducing systems are responsible for


C. strengthening



an erratic input signal.


40




D. How the continents originated




has been a topic of continual geogical research.


41



Coals can sometimes give rise to gas accumulations and it is thought that some gas was derived


D. on


the devolatilization of older coals.



42




B. When




she comes, shall tell her to wait for you.


43



She did not understand me




C. before





I explained it to her.


44



All over the world, at various



B. depths




beneath land and sea. there are accumulations of hydrocarbons formed long ago by decomposition of animal and vegetable remains.



46




C. By means of




a suitable linkage that diagram actuates the pointer over graduated scale on the face of the instrument.


47



If the concentration is high enough, the flame will be



B. put out




.


48



This heat is measured by the change in electrical resistance of the filament









changes in its temperature.


C. through




49



It may even be worthwhile the field personal



B. to test




cement mixes with the actual fields water in the cook’s oven.



50



How to use even the simplest wiper plugs and stage collars is worth



C. explaining




in the well plan.


51



It is true that the share of oil and gas in the total energy spectrum today shows



B. signs


of diminishing.


52



Customer demand has



C. propelled



this growth.


53



Oil was first



D. commercially




exploited on any scale in the late nineteenth century.


54



Although water is considered



C. not pressed




, the total compressed volume is quite large.



55



The crude oil



B. flows out from



the wellhead.


56



The electronic computer has become



B. more and more




important in the lives of all the people in the world.


57



Computers can work



D. through




a series of problems and make thousands of logical decision quickly.



58



If a process uses its high priority to hog the computer, its priority



B. will drop


.


59



All the competing processes would then wake up to



C. fight over




the new memory.


60



Water in the permeable carrier bed is,



D. as




we have noted, moving laterally down a fluid potential gradient, from areas of higher fluid potential to areas of lower fluid potential.


61



The petroleum engine must also be _


A. prevented from


_ running to cool.


62



In basins _


C. where




source



rock and crude cannot be correlated.


63



_


C. As


_ civilizations grew more complex, better methods of communication were needed.


64



The conversion predominantly _


D. take place


_in the vapor phase in the presence of a data list.


65



No longer will such a control system be used only on large complex systems _


B. because




it is the only feasible way to maintain control and gather information.


66



_


D. Even if


_ oil companies can no longer control the price of oil, they can work to better control themselves.


67



The U.S. federal government became interested in space travel to the moon and embarked on a program_



A. in the 1960’s


.



68



Crude oil is a raw material, like iron ore, _


C. which


_ must be processed before it can be used.


69



_


D. Should


_ I fail, I would try again.



70



_


B. However


_ ,in petrochemical application ,there is a need to separate the C


4


isomers.


71




In the case of blast furnace and other manufactured gases, the operator should _


A. take care


_ that he does not breathe any of the escaping gas.


72



The reason _


D. for


_ using diamond bits is to drill less expensive and safer wells.


73



_


C. From


_ an operational viewpoint, the later steam rigs were highly efficient.


74



If the circulating fluid is a liquid, it is usually made up mostly of water, _


B. though


_ occasionally oil is the major component.


75



For difficulties in work distribution, a compromise for_



B. both ….and


_centralized _____decentralized means to coexist has been proved practical and effective.


76



The gas is very under saturated _


A. with respect to


_ both constituents and electric corporation.


77



A number of there systems have been in use for some time for applications _


C. such as


_ control of batch reactor sequence.


78



_


A. Strange as


_ it may seem, there is a



return to control in some instance.


79



_


B. Without


_ new and emerging technologies, many future oil and gas endeavors may not be possible.


80



There are a number of ways _


D. in which


_ the porosity parameters can be calculated depending upon the complexity of the formation.


81



For difficulties in work distribution, a compromise for_



B. both ….and


_centralized _____decentralized mean to coexist has been proved practical and effective.


82



It must be stressed that organic chemical data _


B. be used to


_ alone.



83



Computer development and uses of the future will depend on the ingenuity of men, _


D. regardless of


_ their direction of form.


84



A number of these systems have been in use for some time for applications _


C. such as


_ control of batch reactor sequence.


85



_


C. Coupled with


_ system control, real- time monitoring of rotating equipment and other system components can reduce fuel consumption.


86



You will usually want to start DOS _


C. whenever


_ you start you computer.


87



The computer is a very valuable aid _


B. in


_ log analysis for a number of reasons.


88



The atoms are _


B. joined



into


_ together _____ molecules.


89



_


C. Had you come


_ ten minutes later, I should have been out.


90



_


C. Which of


_ the processes which can run is to run next? Associated with each process is a priority.


91



_


C. When


_ the end of a chain linked together, two hydrogen are eliminated creating a ring structure.



92



_


C. To remove


_ this hazard, a simple portable explosive indicator is required whereby a survey of such enclosures may be conducted.



93



Diamond bits are sold _


B. by


_ the carat weight of the diamonds in the bit, plus a setting charge.



94



The earliest mechanical or power similar to steam rigs, _


B. except




the steam engines were replaced by gas.


95



The circulation equipment for a modern rotary rig usually includes _


D. not only




but also


_ the mud pump ______ mud- conditioning equipment.


96



In petroleum application, the total mixed stream _


D. is used


_without the need for separating the individual C


4


isomers.


97



Diamond drilling bits are specialized drilling tools _


C. proven


_ by experience and worthy of an economic analysis.



98



Mud-system _


C. consists of


_ two tanks with 800 bbl working volume, one shale shaker, mud agitator and one Thule mud cleaner.


99



It must be stressed that organic chemical data _


D. should not be used


_ alone but must be integrated with information.


100



Hydrogen is a good moderator. _


A. even better is


_



deuterium combined with oxygen to form “heavy water”.




101



People were afraid _


C. of


_ leaking the oil.



102



The gas is very under saturated _


A. with respect to


_ both constituents and electric corporation.


103



Heavy fuel oils are among the least valuable products obtained from crude oil, _


B. and


_ they are also the easiest to find substitutes for.



104



_


A. Strange as


_ it may seem, there is a



return to control in some instance.



105



Side scan radar has been in use for many years to provide imagery of the surface and to find structure _


A. related to


_ the topography.



106



There are a number of ways _


D. in which


_ the porosity parameters can be calculated depending upon the complexity of the formation.



107



Chemistry has played an essential part _


A. in


_ the development of the refining process.



108



Hydrogen is a good moderator. _


A. even better is


_



deuterium combined with oxygen to form “heavy water”.




109



In petroleum application, the total mixed stream _


D. is used


_without the need for separating the individual C


4


isomers.


110



It must be stressed that organic chemical data _


D. should not be used


__ alone but must be integrated with information.



111



Diamonds _


B. used


_ in oilfield bits are of natural origin and range from as small a 15 stones per carat to seven carats per stone in special applications.



112



Diamond drilling bits are specialized drilling tools _


C. proven


_ by experience and worthy of an economic analysis.



113



Mud-system _


C. consists of


_ two tanks with 800 bbl working volume, one shale shaker, mud agitator and one Thule mud cleaner.




- 1 -


114



The well plan is the primary mechanism _


C. by which


_ technology gets to the rig site.


115



_


B. If


_ the event in question is signaled by another process, then there is no problem.


116



_


B. However


_ ,in petrochemical application ,there is a need to separate the C


4


isomers.


117



The reason _


D. for


_ using diamond bits is to drill less expensive and safer wells.



118



_


C. Had you come


_ ten minutes later, I should have been out.


119



The atoms are _


B. joined




into


_ together _____ molecules.



120



Crude oil is a raw material, like iron ore, _


C. which


__ must be processed before it can be used.


121



Concentric folds consist of strata parallel to



D. each other




.



122



Folding in layered rocks consists



C. of




deformation of strata without faulting.


123



Folds are manifest as different types according



B. to




morphology and origin.



124



An inflection point occurs



A. where




bed curvature in one direction changes to bed curvature in the opposite direction.


125




A syncline is a concave



B. upward




.


126



Wireline logs nowadays are



B. taken




in every well at convenient intervals.


127



Wireline logs measure electrical properties of rocks,



A. which




can be indirectly interpreted in terms of rock type, porosity and fluid content.


128



Shales are composed



D. of




argillaceous or very fine grained minerals.


129



The gamma-ray log is an example of a



C. nuclear




log.


130



Well logs are now



B. recorded




on digital tapes.



131



There


A. are


three general classifications of diamonds used in the petroleum industry.


132



The reason for



A. using




diamond bits is to drill less expensive.



133



Diamonds used in oilfield range


C. from



to




as small as 15 stones per carat









seven carats per stone in special applications.


134



The diamonds are held in place by the matrix which is bonded


A. to




the steel shank.


135



Quality is roughly defined



C. when




considering diamonds for oil well bits.


136



The drilling fluid must



D. be circulated




downward through the drill stem.



137



The circulating fluid is usually made up



B. of




water.


138



Both types of circulating fluids are called



D. drilling mud




.


139



The first pit the mud enters is usually a



D. settling pin




.



140



Mud control is one of the most complex subject the drilling crew has to deal



A. with




.


141



Density is weight per unit of



B. volume




.



142



The mud weight is usually tested by a



C. balance





.



143



Fill the clean, dry cup


A. with




the mud to be weighted.



144



It is absolutely essential



B. that




all parts of the mud balance be kept clean if accurate results are to be obtained.



145



To calibrate the mud balance,



C. do




the following.



146



The qualifications and experience of drilling personnel



A. are




important ingredients in ensuring rig performance and safety.



147



All of these have an effect



B. on




the quality and ability of personnel.


148



A crew familiar with the rig will make



A. fewer




mistakes in an emergency.


149



Crew training has



C. been neglected




as well.


150



Frequent safety meeting may seem insignificant



D. on




the surface.



151



Consider running a seating nipple just


A. above




the collars to check for pressure integrity.


152



Drill collars should be examined



C. before




use.



153



The condition of the drill line should be double checked as well



C. as




the ton-mile records.



154



Some contractors are stretching the life of the drill line to the extent



D. that




it can cause serious safety hazard.



155



Deteriorated suction lines mean



C. corroded suction lines




.



156



Knowing the distributions of field sizes for play types is crucial to













profitability of plays.


C. predict



157



Many of the fields are actually



B. too small




to be economic.


158



The average field size is






should be used in an economic analysis of a play type.


C. what



159




B. For




this reason, targeting only the largest fields in a competitive basin may lead to poor economic performance.



160



Competition caused companies to take greater efforts in order



D. that




they can remain a player.



161



For this reason computers can be _


B. defined


_ as devices.




162



Digital computers work by _


A. using


_specific information .)


163



Regardless _


C. of


_ their direction or form ,computer development and use of the future will depend on the ingenuity of men .



164



There is_


A. no


_ memory associated with events.



165



This differs considera


bly from Dijkstra’s P and V synchronization operations, in that no memory _


A. is associated with


_events.



166



The event- wait code in the kernel _


A. is


_like a coroutine linkage.



167



In addition _



_reducing the volume of paper, we can use in a long time.


168



The X.12 standard is actually made _



_ of four parts.




- 2 -


169



In some cases, Yacc fails to produce a parser when _


C. given


_ a set of specifications.


170



Let’s look at starting DOS , step—


_



_ stey




172



Unix _



_ a wide range of emotions.


173



The declining cost and improved reliability of device permit a new approach



D. to


computer maintenance.




174



Seismic data are recorded in amplified form _


B. so as to


_achieve full scale of the seismogram.



175



The program is designed to run _



_an IBM XT computer .




176



There are _


A.a number of


_of ways to do that.



177



This network gathering oil and gas from hundreds of _


B. thousands


_of individual wells.



178



A pipeline was selected _


C. as


__ a transportation system.



179



W.H. Jolles has detailed three types of tanker loading systems for exposed Artic terminals, all of _


D. which


_have advantages and disadvantages.



180



The Chuckchi Sea _


A. is


_ typical of most frontier regions.



181



From large central storage facilities, oil _


C. is moved


_through large----diameter.


182



It is difficult to pinpoint a typical throughput _


B. for


_an individual crude trunk line.


183



The fact _


A. that


_they traverse long distances complicates their construction and operation.


184



_


A. Such


_a gas is called an ideal gas.



185



Gas transmission pipelines are made _



_steel pipe and are buried below ground surface.


186



Gas provides home _


C. heating


_.



187



The size of compressors within the station varies _



_a wide range.


188



Both aboveground storage and belowground storage _


B. are


_used for both natural gas and hydrocarbon liquids.



189



Free water in the tank _



_the oil can also be determined by gauging.


190



Construction costs



also vary _


ing


_to location.


191



LNG is produced in a liquefaction plant by cooling the feed gas to produce a _



---viscosity liquid boiling at about minus 160


0


C at atmospheric pressure.



192



This employs the same principles as a domestic refrigerator, _


gh


_the equipment is much more complicated.


193



Gaseous fuels



have _


A. many


_ advantages.


194



A refinery _



_ the Far East for instance had considerable success.


195



Strange _



_ it may seem, there is a return to decentralized control.


196



Most liquefaction plants are _



_in a series of parallel modules.


197



The construction of all pipeline _


B. follows


_ this general sequence.



198



_


A. Much


_ gas is moved.


199



The basic thermodynamic processes in engineering thermodynamics _



_the isochoric process.


200



Oil and gas _



_not the only materials transported by pipeline.



阅读理解题


(40%)




1



There is little doubt in the minds of most petroleum geologists


1



What is the subject of this passage?


A. Origin and generation of oil and gas



2



According to this passage, which of the following sentences is true?


D. Crude oil is a complex mixture


3



What is the meaning of the word



D. complicated


4



Conditions favorable foe generation of petroleum normally occur?


B. under depths of about 1.500 meters below the surface



5



When is the petroleum generated?


C. During burial of the sediment


2



Cable-tool rigs were relatively simple to operate and easy to repair.


6



Which of the following is mainly discussed by the author?



B. Rotary rigs




7



According to this passage, when did rotary rigs begin using air drilling?



C. in the mid 1950s



8



Which sentence could be implied from this passage?



A. Rotary rigs are better than cable rigs


9



What does



- 3 -


B. restricted



10



According to this passage, which of the following sentences is true?


A. The later steam rigs were more efficient than the earliest mechanical or power rigs



3



Measurement while drilling(MWD) is the downhole measurement



11



What does the passage mainly discuss?



D. The generation of measurement while drilling


12



According to this passage, which sentence among the following sentences is true?



B. Drilling is a complicated technological process with many uncertainties



13



Which of following words can replace



C. consolidate



14



Which company introduced the first commercial MWD system?



B. Teleco


15



When did the first U. S patents and technical papers on MWD appear?


A. in the early 1930's


4



During this century the petroleum industry has risen


16



The passage primarily discusses


A. some problems related to the petroleum



17



The word


D. significantly



18



Which of the following would best illustrate hydrocarbons?



A. compounds of hydrogen and carbon, either gaseous, liquid or solid according to the complexity of their molecules at normal temperatures and pressures


19



The word


B. contains


20



The sentence in the last paragraph


A. The task of petroleum industry is to find them


5



Geophysics is the application of the principles of physics


21



Which of the following is the author's main purpose in the passage?


D. Application of geophysics


22



According to this passage, which of following objects cannot be investigated by geophysics?


D. Core of the earth


23



Which sentence could be implied from this passage?


A. Geophysics is often the only satisfactory way towards a solution of oil prospecting



24



What does



B. the earth



25



According to this passage, which of the following sentence is true?



A. One of the aims of pure geophysics is to deduce the physical properties of the earth



6



One of the areas in which the technical advances


26



What is the primary topic of this passage?



A. Transporting Oil



27



Where was the world's first producing well?



B. The one near Titusville, Pennsylvania


28



The word


C. pulling



29



With which of the statements is the author most likely to agree?



A. The pipelines offers many advantages for transporting oil


30



The word


A. achieved



7



Crude oil is a raw material, like iron ore


31



What is the main topic of the passage?


A. Refining oil



32



With which of the statements is the author most likely to agree?




- 4 -


C. Crude oil is a mixture of a number of different hydrocarbons


33



The word


D. Hydrogen and carbon


34



According to this passage, which of following sentences is true?



A. Small, light hydrogen and carbon molecules are gases


.


35



The word


A. Sulfur and other chemicals



8



Catalytic cracking is a process for the conversion


36



What is the primary topic of this passage?


B. Catalytic cracking


37



With which of the statements is the author most likely to agree?


A. Catalytic cracking is to convert heavy hydrocarbon fractions mainly into high- quality lighter components



38



The word


D. fuel oil components


39



According to this passage, which of following sentences is true?



C. With increasing cost of crude oil there is an increasing application of catalytic cracking


40



The word


B. The catalyst enhances the rate of cracking reactions and selectively to promote certain types of reactions



9



The migration of petroleum in general terms is better understood than its origin


41



What does the passage mainly discuss?



C. The migration of petroleum




42



According to this passage, which of the following sentences is true?


A.


Primary migration takes place within the source rock, and secondary migration through the permeable carrier beds to the trap or to the surface



43



Which sentence could be implied from this passage?


A. The essential character of petroleum is acquired before secondary migration begins



44



What does the word



A. primary migration



45



According to this passage, which of the following sentences is true?



C. Secondary migration is a demonstrable process


10



Horizontal wells are sorted by the radius of curvature


46



What does the passage mainly discuss?



B. Long radius horizontal wells


47



The word


A. specially



48



With which of the statements is the author most likely to agree?



C. Long radius holes are now used almost exclusively offshore


49



The word


A. additional


50



According to this passage, what topic may the author discuss in the folloing paragraphs?


C. Other radius wells



11



When petroleum is first taken from the ground


51



What may be the main topic of the passage?



B. Development of fuels


52



The word


A. oil




53



With which of the statements is the author most likely to agree?



C. There are also many other uses for oil products besides fuels


54



The word


D. easily ignited and capable of burning rapidly


55



According to this passage, which of the following statements is likely to be true?


A. Kerosene is better for burning in lamps than gasoline



12



The greatest natural source of energy available to produce


56



The passage mainly focuses on


C. an introduction of water drive


57



The word


C. make visible




- 5 -


58



Which of the following would best illustrate


B. Water moves in the rocks to replace the oil as is produced because of expansion of the minutely compressed water



59



The word


D. given up


60



Why does the gas-oil ratio remain about the same in a water drive reservoir?



B. Because pressure, remaining high, prevents gas from evolving to form a high gas saturation



13



When the crude oil has been brought to surface


61



It is essential to apply some form of water settling treatment before the oil is _______ to the refinery or to the shipping point.



C. ready for shipment



62



Sarir oil field in Libya for instance had four gathering centers ______ a drainage area of about 150 square miles.



A. occupying




63



The crude oil _____ the wellhead.



B. flows out from




64



The oil from each producing well is ______from the wellhead to a “gathering center” through a “flowline”.




B. transferred


65



Sarir oilfield in Libya for instance had ______ gathering centers to which were connected a total of some 40 production wells



covering a drainage area of about 150 square miles.



B




B. two


14



What causes oil to flow from a reservoir?


66



When pressure is ______, oil was easily produced.



B. high



67



The energy available in nature to produce petroleum deposits originates in the __________ environment as petroleum does.



C. same



68



How many pounds is the pressure in the fluid within a given porous rock per square inch per 100 feet of depth?



D. 46


69



Weight of rock overburden is supported _____ by the rock itself.



B. chiefly


70



Rock porosity is not influenced ______ by rock overburden .



C. greatly


15



Many proposals have been made to classify the different


71



Many ____have been made to classify the different physical shapes of petroleum reservoirs.


A. suggestions



72



Generally, reservoirs have _______geological features.



A. four



73



It is common to find traps _______filled with water.



B. entirely




74



Upward escape of oil has been stopped by the impermeable material. This usually happens in _______.


C. reservoirs formed as a result of an unconformity


75



Azmari Limestone fields is in ______.


C. Californla



16



Rocks formed from materials derived from pre



existing


76



In the first paragraph the word “ultimately” means_____.



A. finally



77



In the sentence “This means …. not unique”



The word “exclusive ” means _______.



D. unique



78



There can be many classifications based upon _____.


A. lithology



79



______these rock types came from a particular environment of deposition.



D. All of



80



The clastic particles are ______from the original rock.


B. obtained


17



Oil usually has to be transported great distances from


81



In the past, main methods of transporting the oil are _______.


D. ship and tanker


82



In the following, which one is not mentioned?



C. Pairs


83



When wast he first oil pipeline installed?




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A.1865



84



How long was the longest pipeline ?



C.1765


85



The first pipeline was made of lengths of ______ pipes.



B. iron


18



The greatest natural source of energy available to produce


86



The greatest natural source of energy available to produce oil today traces its source back to __________.


A. the ancient seas



87



Although water is considered __________,the total compressed volume is quite large.


C. not pressed


88



This source of energy is the great quantity ______existing in the porous channels of rock associated with present- day oil deposits.



A. salt



water



89



In the following reservoirs which one is not producing by energy supplied by water drives.


D. Yurgon field


90



When the rate is once again reduced. pressure will



________ .


B. increase


19



If oil, water and gas were placed in a bottle


91



For a given height above the free level, capillary will be ______ in two pores of different size.



same


92



In general, ______the permeability of a given, _______ will be connate-water fraction within the sand.




lower




the higher



93



“irreducible minimum water saturation” has _____ been applied to the percent of water.



B. sometimes


94



The nature and thickness of the transition zones between water and oil, oil and gas and water and gas are influenced by _____ factors.



A. five


95




If oil, water and gas were placed in a bottle ,from top to bottom, the order would be ___.



A. gas ,oil and water




20



A BRIEF MATHEMATICAL ANALYSIS AND SOME COMPUTED


96



We can conclude that



________.



C. the advantage of the torsional log is considerable



97



In the first paragraph the word “acoustic ”means _____


.


A. sound



98



Because the torsional signal is simple when the rock around the hole is homogeneous,______.



B. we infer that we can use it to determine depth of invasion or degree of hole damage anytime the factors complicate the waveforms


99



If shear speed in undamaged shale is 1.4 km/s and in damaged shale is 1.1 km/s, hole radius is 10cm, and the shale is damaged to a radius of 20cm, onset times for the two waveforms at 25 cm and 50cm yield a


shear speed for the 1.0km/s,



_____.


can interpret that it is a sign of damaged zone



100



Shear speed is best measured with a tool that generates and detects shear waves only, compressible waves in the borehole fluid and surrounding formation should be ________ and without coupling effects.



B. orderly and neat


21



From large central storage facilities oil is moved through large-diameter


101



Oil is moved from storage facilities to ___________.


C. refineries


102



Oil is moved to refineries through _________ trunk-lines.


D. both a and b


103



Pumping stations are needed to keep pressure to ________.


B. overcome friction


104



Crude trunk lines are made of __________.


A. steel


105



Control of crude oil trunk line is a compl


ex operation. The word “complex” means______.



D. complicated


22



Natural gas is usually produced in oil fields at some


106



On subsequent expansion the gas is very under saturated __________.


D. with respect to


107



The gas distributed was 50/50 percent mixture of oil gas and natural gas.50/50 means __.


A. go halves



108



Considerable amount of dust was stirred up. Dust was ________.



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