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Архитектура Аудит Военная наука Иностранные языки Медицина Металлургия Метрология Образование Политология Производство Психология Стандартизация Технологии |
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Архитектура Аудит Военная наука Иностранные языки Медицина Металлургия Метрология Образование Политология Производство Психология Стандартизация Технологии |
Match the headings and the paragraphs of the text you have read. There is one extra heading.Стр 1 из 2Следующая ⇒
АНГЛИЙСКИЙ ЯЗЫК
Методические указания к практическим занятиям по дисциплине «Английский язык» для студентов всех направлений подготовки и всех форм обучения
Составитель Л. М. Калянова
Тюмень ТюмГНГУ
Английский язык. Методические указания к практическим занятиям по дисциплине «Английский язык» для студентов всех направлений подготовки и всех форм обучения / сост. Л. М. Калянова; Тюменский государственный нефтегазовый университет. – Тюмень: издательский центр БИК, ТюмГНГУ, 2015. – 34 с.
Методические указания рассмотрены и рекомендованы к изданию на заседании кафедры естественно-научных и гуманитарных дисциплин « 26» февраля 2015 года, протокол № 7.
Аннотация
Данные методические указания предназначены для студентов имеющих базовые знания по английскому языку не ниже среднего уровня и изучающих вопросы нефтегазового дела в рамках профессионального иностранного языка. Цель методических указаний – подготовить студентов к профессиональному общению на английском языке. Указания могут использоваться как для аудиторной, так и для самостоятельной работы студентов. Тексты составлены на основе аутентичной учебной и научной литературы. СОДЕРЖАНИЕ Предисловие………………………………………………….…4
Unit I ENGINEERING JOBS……………………………………….…..5
Unit II OIL FORMATION…………………………………………….…8
Unit III HOW OIL BECOMES OIL……………………………………...11
Unit IV OIL EXPLORATION……………………………………………14
EXPLORATION METHODS……………………………………15 Unit V OIL EXTRACTION……………………………………………...20
Unit VI LIFE OF AN OIL WELL (PART I)………………………………23
Unit VII LIFE OF AN OIL WELL (PART II)………………………….…..27
Unit VIII DRIVE MECHANISMS…………………………………………..29
БИБЛИОГРАФИЧЕСКИЙ СПИСОК…………………………...33
ПРЕДИСЛОВИЕ
Целью данных методических указаний является формирование уровня иноязычной компетенции, позволяющего бакалавру ТюмГНГУ использовать иностранный язык как средство межкультурной коммуникации в профессиональных сферах общения. Методические указания включают восемь разделов, в основу которых положен тематический принцип. В каждом разделе представлена система упражнений для усвоения лексики (аутентичные тексты, лексический минимум, подстановочные упражнения, предтекстовые и послетекстовые задания, нацеленные на развитие навыков устной и письменной речи, упражнения по переводу). Грамматические упражнения представлены на базе терминологии по специальности. Методические указания предназначены для студентов технических вузов, обучающихся по направлению “Нефтегазовое дело”.
В результате освоения дисциплины студент должен: Знать: грамматические структуры изучаемого языка в объеме необходимом для овладения языковой и коммуникативной компетенциями, определенными целями изучения данной дисциплины; основы техники перевода. Уметь: осуществлять поиск новой информации при работе с текстами из учебной, научно-популярной литературы, периодических изданий, инструкций, проспектов и справочной литературы; понимать устную (монологическую и диалогическую речь) на бытовые и специальные темы; осуществлять устный обмен информацией при обсуждении проблем общенаучного и общетехнического характера. Владеть: навыками устной разговорно-бытовой речи и профессионального общения по широкой специальности вуза; навыками всех видов чтения: ознакомительным чтением - количество неизвестных слов, относящихся к потенциальному словарю, не превышает 2-3% по отношению к общему количеству слов в тексте; изучающим чтением – количество неизвестных слов не превышает 5-6% по отношению к общему количеству слов в тексте; допускается использование словаря; навыками письменной фиксации информации, получаемой при чтении текста и навыками письменной реализации коммуникативных намерений.
UNIT I ENGINEERING JOBS 1. Match the following engineering jobs with their translation and give an explanation to each of these jobs:
2. Learn the following vocabulary:
3. Read and translate the text below and do the exercises:
ENGINEERING JOBS
Professional engineers may work as: Design engineers : They work as part of a team to create new products and extend the life of old products by updating them and finding new applications for them. Their aim is to build quality and reliability into the design and to introduce new component s and materials to make the product cheaper, lighter, or stronger. Production engineers : They ensure that the production process is efficient, that materials are handled safely and correctly, and that faults which occur in production are corrected. The design and development departments consult with them to ensure that any innovations proposed are practicable and cost-effective. Just below the professional engineers are the technical engineers . They require a detailed knowledge of a particular technology – electrical, mechanical, electronic, etc. Engineering technicians may work as: Test/Laboratory technicians: They test samples of the materials and of the product to ensure quality is maintain ed. Installation and service technicians : They ensure that equipment sold by the company is install ed correctly and carry out preventative maintenance and essential repairs. Production planning and control technicians: They produce the manufacturing instructions and organize the work of production so that it can be done as quickly, cheaply, and efficiently, as possible. Inspection technicians : They check and ensure that incoming and outgoing components and products meet specifications. Designers (draftsman ): They produce the drawings and design documents from which the product is manufacture d. There are also many skilled workers, such as: Mechanics: They can be different in accordance with their work- engine mechanic, maintenance mechanic, and others. Welders: They do specialized joining, fabricating, and repair work. Electricians: They wire and install electrical equipment.
4. Give the Russian equivalents to the following English verbs and compose sentences with them: 1) to create 6) to require 2) to extend 7) to occur 3) to update 8) to maintain 4) to handle 9) to carry out 5) to ensure 10) to install
5. Give the English equivalents to the following expressions: 1) найти новое применение 2) создать новую продукцию 3) модернизировать продукцию 4) профилактический уход (ремонт) 5) необходимый ремонт
6. Translate the following phrases: 1) incoming information; professional engineer; engineer taking part in the experiment; joining detail. 2) innovations proposed; detailed knowledge; equipment sold; highly skilled work; produced by the plant; well-done work.
7. State who fulfills the following tasks: 1) tests completed motors from a production line. 2) finds out why a new electronics assembly doesn’t work. 3) sees that the correct equipment is available on a production line. 4) finds a cheaper way of manufacturing a workpiece. 5) repairs heating system installed by their company. 6) sees that a new product is safe to use.
UNIT II OIL FORMATION Oil and natural gas have been foremost on people’s minds for the past years. Nations and the world are run by oil. It fuels our cars, our homes and provides us with electricity. It is used in the making of plastics and cosmetics. Oil is also prevalent in our lives, but most people don’t know where the oil we use comes from.
1. Learn the following vocabulary: 1. crude oil сырая нефть 2. mixture смесь 3. hydrocarbons углеводороды 4. separation разделение, разложение на части 5. refining очистка, перегонка (нефти) 6. volatile летучий, быстро испаряющийся 7. viscous густой, вязкий 8. residue [´ rezidju: ] остаток 9. reservoir [´ rezə vwɑ: ] rock порода-коллектор 10. source rock материнская порода 11. porous пористый 12. porosity пористость 13. permeable (impermeable) проницаемый (непроницаемый) 14. permeability проницаемость 15. cap rock покрывающая порода, покрышка залежи 16. sulfur сера 17. nitrogen азот 18. oxygen кислород 19. feedstock исходное сырье 20. split up разделять 21. arranged систематизированный 22. tarry [´ tæ ri] смолистый 23. alter изменить 24. sink погружаться 25. decay разрушаться, разлагаться 26. fine-grained мелкозернистый 27. exert оказывать (давление) 28. trap ловушка 29. property свойство 30. shale сланец 31. accumulate накапливать, накоплять 32. limestone известняк 33. sandstone песчаник
2. Read and translate the text below and do the exercises: OIL FORMATION
Crude oil is a complex mixture of hydrocarbons with minor proportions of other chemicals such as compounds of sulphur, nitrogen and oxygen. To use the different parts of the mixture they must be separated from each other. This separation is called refining. Crude oils from different parts of the world, or even from different depths in the same oilfield, contain different mixtures of hydrocarbons and other compounds. This is why they vary from light colored volatile liquids to thick, dark oils – so viscous that they are difficult to pump from the ground. Hydrocarbons vary in structure depending on the number of carbon atoms and the way in which the hydrogen atoms combine with them. Hydrocarbons can be arranged as straight chains, branched chains or closed rings. There are two main chemical families of hydrocarbons – the alkanes and the alkenes. As the structure of hydrocarbons varies so much, thousands of synthetic products can be manufactured with many different properties. Hydrocarbons with small molecules make good fuels. Methane (CH4) has the smallest molecules, and is a gas, used for cooking and heating and generating electricity. Gasoline, diesel, aviation fuel and fuel oil are all liquid fuels. Hydrocarbon molecules can be split up into smaller ones, or built up into bigger ones, or altered in shape, or modified by adding other atoms. This is why they are a very useful starting point (called a chemical feedstock) for making other materials. Even the thick black tarry residue left after distillation is useful. It is called bitumen, and is used in tarmac for road surfacing, and for roofing. Oil is formed from the remains of tiny plants and animals (plankton) that died in ancient seas between 10 and 600 million years ago. After the organism died, they sank into the sand and mud at the bottom of the sea. Over the years, the organisms decayed in the sedimentary layers. In these layers there was little or no oxygen present. So microorganisms broke the remains into carbon-rich compounds that formed organic layers. The organic material mixed with the sediments, forming fine-grained shale, or source rock. As new sedimentary layers were deposited, they exerted intense pressure and heat on the source rock. The heat and pressure distilled the organic material into crude oil and natural gas. The oil flowed from the source rock and accumulated in thicker, more porous limestone or sandstone, called reservoir rock. Movements in the Earth trapped the oil and natural gas in the reservoir rocks between layers of impermeable rock, or cap rock, such as granite or marble.
UNIT III HOW OIL BECOMES OIL 1. Learn the following vocabulary: 1. depression впадина 2. restricted basin ограниченный бассейн 3. decompose – decomposition разлагаться - разложение 4. expansion распространение (на большую площадь) 5. recover oil добывать нефть 6. adjacent (to) смежный, прилегающий 7. pocket карман 8. apex [´ eipeks] вершина 9. fold складка 10. migrate мигрировать, перемещаться 11. lens [´ lenz] чечевицеобразная залежь, линза 12. pinch out выклиниваться 13. unconformity несогласное напластование 14. truncated [´ trʌ ŋ keitid] срезанный, эродированный 15. fracture разлом, трещина 16. preserve [pri´ zə: v] сохранять 17. interweave [ˏ intə ´ wi: v] перемешивать, вкраплять 18. compaction уплотнение 19. mudstone = mudst аргиллит 20. thrust fault сброс 21. cook подвергаться тепловой обработке 22. kerogen [´ kerə dʒ i: n] кероген (органическое вещество биту- минозных сланцев) 23. abundance распространенность, изобилие
2. Read the following text and do the exercises: HOW OIL BECOMES OIL Petroleum (literally rock oil, from the Greek petra- for rock and Latin – oleum for oil) is a general term used to refer to all forms of oil and natural gas that is mined from the earth. What most people concern themselves with is crude oil, the liquid mixture of naturally occurring hydrocarbons, and natural gas, which is a gaseous mixture of naturally occurring hydrocarbons. Hydrocarbons are complex molecules that are formed from long strings of hydrogen and carbon, such as propane (C3H8) or butane (C4H10). Petroleum is the final product that we get out of the ground. But how does it get there? Petroleum begins as living animals, microscopic organisms (like diatoms or plankton) that live in the oceans. When these organisms die, their bodies sink and collect on the ocean floor. These organisms live all over the oceans and their bodies fall and collect on the ocean bottoms all over the world. When the organic matter becomes buried and begin to decompose, they are referred to as kerogen. Despite the apparent abundance of dead organisms raining down on the ocean bottoms, there are specific conditions that must be met for these organisms to be transformed into petroleum. First, the area that the kerogen collects must be a restricted basin, a depression where sediment can accumulate and where there is poor water circulation. When the oxygen is gone, the decomposition stops and the remaining matter are preserved. The kerogen must be buried under sediment where it will be altered through high temperatures and high pressures. As the heat and pressure breaks down the kerogen, the hydrocarbon chains are freed. Long chains of hydrocarbon are oil; shorter chains are gas, generally methane (CH4) and condensates such as ethane, propane and butane. As the heat and pressure continues, the longer chains will continue to break into shorter chains. If the process continues long enough, all that will remain will be methane. Compaction of the sediment, and the expansion of the kerogen as it is transformed into petroleum cause it to be forced out of the rock it was created in (the source rock) and into nearby sediments. If these sediments are porous enough (have microscopic holes) and permeable enough (allowing for the flow of liquids), then the petroleum will migrate through the rock. Since gas and oil are lighter than water, they can travel through water-saturated rock. Eventually the oil will stop migrating as it meets rock that is not porous or permeable, and will collect in a trap. It is these petroleum traps that geologists search for and that the oil companies drill into to recover the oil. Despite the simplicity, there are several conditions that must occur, otherwise, no oil will be made. First, there needs to be a source rock that contains the organic matter to be converted into petroleum. This source rock is generally shale or other mudstones. There must be a reservoir rock, usually sandstone or limestone that is porous and permeable where the oil can be stored and transported. There needs to be a trap, something that is non-porous and non-permeable that will hold the petroleum in the reservoir and prevent it from migrating further. Finally, there needs to be enough heat and pressure to sufficiently cook the oil and gas out of the kerogen. If anyone of these conditions is not met, then petroleum cannot be formed. The important step in the process is the trap. Something needs to block or trap the petroleum so it will accumulate into a large enough deposit for geologists to be able to locate it. Petroleum traps come in several varieties, in various sizes and can be made through structural processes (like folds and faults), or by sedimentary processes. Structural traps work by folding or breaking the reservoir rock and placing it adjacent to an impermeable rock layer, like shale. There are three types of structural traps. One of the most common is a trap from the folding of the rocks. Anticlines bend the reservoir rock and create a pocket at the apex of the fold where the petroleum cannot migrate. Normal and thrust faults can result in petroleum traps by breaking the reservoir rock and moving it so that it is against an impermeable rock layer. The other way to trap petroleum is through stratigraphic traps. The diagram shows five different types of stratigraphic traps. The differences between these and structural traps is that these traps occur by the nature of how the sediment was deposited and not whether it was broken or folded. The first two, sandstone lenses and sandstone pinch-outs, are the result of the changes in deposition of the sediment. Thick layers of mud are covered by thinner layers of sand from migrating shoreline, or by the sand deposited by large rivers. As sea level changes or rivers migrate, the different sand and mud layers are interwoven creating lenses or pinch-outs. These sand layers allow the petroleum to accumulate and the mudrock layers trap the petroleum. Unconformities can create traps by burying truncated sandstone or limestone layers with layers of mudstone. Finally, salt domes can push up through buried sediment and deform the overlying layers of rock. This causes folds and fractures to form in the rock, trapping the oil salt domes are the primary places where the oil is found.
3. State whether the following sentences are true or false: 1. A restricted basin is not the place for the kerogen to collect. 2. Decomposition does not stop when the oxygen is gone. 3. The oil continues migrating in porous and permeable rocks. 4. The traps are important steps in the process of oil accumulation. 5. Structural geology is the subject for the students to miss. 6. Structural traps are of two types. 7. Stratigraphic traps are the ones that occur by nature. 8. It takes thousands of years for the petroleum to be made. 9. There are some specific conditions for the organisms to be met. 10. Shorter hydrocarbon chains are oil. UNIT IV OIL EXPLORATION Oil exploration is the search by petroleum geologists for hydrocarbon deposits beneath the Earth’s surface. Oil and gas explorations are grouped under the science of petroleum geology. 1. Learn the following vocabulary:
2. Read the following text and do the exercises: EXPLORATION METHODS Visible surface features such as oil seeps, natural gas seeps, pockmarks (underwater craters caused by escaping gas) provide basic evidence of hydrocarbon generation (be it shallow or deep in the Earth). However, most exploration depends on highly sophisticated technology to detect and determine the extent of these deposits. Areas thought to contain hydrocarbons are initially subjected to a gravity survey or magnetic survey to detect large scale features of the subsurface geology. Features of interest (known as leads ) are subjected to more detailed seismic surveys which work on the principle of the time it takes for reflected sound waves to travel through matter (rock) of varying densities and using the process of depth conversion to create a profile of the substructure. Finally, when a prospect has been identified and evaluated and passes the oil company's selection criteria, an exploration well is drilled in an attempt to conclusively determine the presence or absence of oil or gas. Oil exploration is an expensive, high-risk operation. Offshore and remote area exploration is generally only undertaken by very large corporations or national governments. Typical Shallow shelf oil wells (e.g. North sea) cost $10 – 30 Million, while deep water wells can cost up to $100 Million plus. Hundreds of smaller companies search for onshore hydrocarbon deposits worldwide, with some wells costing as little as $500, 000 USD.
Finding Oil The task of finding oil is assigned to geologists, whether employed directly by an oil company or under a contract from a private firm. Their task is to find the right conditions for an oil trap – the right source rock, reservoir rock and entrapment. Many years ago, geologists interpreted surface features, surface rock and soil types, and, perhaps some small core samples obtained by shallow drilling. Modern oil geologists also examine surface rocks and terrain, with the additional help of satellite images. However, they also use a variety of methods to find oil. They can use sensitive gravity meters to measure tiny changes in the Earth’s gravitational field that could indicate flowing oil, as well as sensitive magnetometers to measure tiny changes in the Earth’s magnetic field caused by flowing oil. They can detect the smell of hydrocarbons using sensitive electronic noses called sniffers. Finally, and most commonly, they use seismology, creating shock waves that pass through hidden rock layers and interpreting the waves that are reflected back to the surface. The shock waves travel beneath the surface of the Earth and are reflected back by the various rock layers. The reflections travel at different speeds depending upon the type or density of rock layers through which they must pass. The reflections of the shock waves are detected by sensitive microphones or vibration detectors – hydrophones over water, seismometers over land. The readings are interpreted by seismologists for signs of oil and gas traps.
(David Lambert “The Field Guide to Geology”, UNIT V
OIL EXTRACTION 1. Learn the following vocabulary: 1. extract oil добывать нефть 2.establish (v) оценивать, устанавливать 3. refinery [ri´ fain(ə )ri] нефтеперерабатывающий завод 4. reserves запасы 5. decrease (v) [di: ´ kri: s] уменьшать, убывать, понижаться 6. increase (v) [in´ kri: s] увеличивать, повышать, усиливать 7. discover (v) обнаруживать, открывать 8. recover (v) получать (керн), добывать (нефть, газ) 9. pump (v\n) качать/насос 10. substance вещество, материя 11. сomposition состав, соединение 12. viable [´ vaiə bl] жизнеспособный 13. recovery factor коэффициент нефтеотдачи 14. extract (v) извлекать (нефть, газ или инструмент из скважины) 15. excess pressure избыточное давление 16. sluggish медлительный, медленный 17. treacle [´ tri: kl] вязкая жидкость 18. seam [´ si: m] пласт; тонкий слой; прослой 19. large-scale крупномасштабный 20. commercial production промышленная добыча 21. production facilities производственное оборудование 22. trap (pocket) ловушка (для отделения газа от жидкости или нефти от воды) 23. reservoir [´ rezə vwɑ: ] пласт-коллектор; пластовый резервуар 24. sufficient [sə ´ fiʃ (ə )nt] достаточный 25. to force оказывать давление, заставлять 26. to inject нагнетать 27. atmospheric temperature температура воздуха 2. Read the following text and do the exercises: OIL EXTRACTION Discovering new reserves of oil is only the beginning of the story. It's then the job of a new team of economists, scientists and engineers to decide whether – and how – to go into large-scale commercial production. Once oil or gas have been discovered, it has to be established how much is there, how much can be recovered, what its quality is and how the oil and gas can be transported safely to a refinery or terminal. In other words, is the find economically viable? If so, further wells will have to be drilled and production facilities established. The recovery factor – the amount of oil that can be economically extracted compared with the total amount estimated to be in the ground – varies widely. Twenty years ago a recovery factor of about 30 per cent was normal. Today the average is about 45 per cent. Improved technology is likely to increase this further. Crude oil is found in underground pockets or traps. Gas and water are generally found in the reservoir too – usually under pressure. This pressure is sometimes sufficient to force the oil to the surface of the well unaided and excess pressure may cause problems. In the early stages of production an oilfield may have freely flowing wells, but as oil is extracted the pressure decreases and pumping may become necessary. Alternatively, it may be possible to increase the pressure by injecting further gas or water into the edges of the reservoir. In other cases, the pressure is inadequate from the beginning and pumps at the bottom of wells have to be used. The fluid extracted from the well usually contains oil, gas and water. It has to be processed so that the crude oil and gas can be transported by pipeline or tanker. Crude oil is a natural substance whose composition varies. Even in the same oilfield, where oil is obtained from different depths, it can vary greatly in composition and appearance. It may be an almost colourless liquid or a sluggish, black substance, so heavy that it cannot be pumped at atmospheric temperatures. Generally, however, crude oils look rather like thin, brown treacle. There is no single solution to the problem of getting oil out. Production and transport methods will depend on where the oil is found, and in particular, whether it has been found under the land or under the sea. Obviously, it is a lot harder and more expensive to drill for oil beneath the sea than on land, which is one reason why the majority of the oil that we use is produced onshore. There are several different types of platform that can be used, depending on the conditions. Usually, the legs of the platform must extend at least 30 metres above the surface of the sea, keeping all equipment well clear of the largest waves. For smaller offshore discoveries it is not usually economic to install a platform. In some cases, floating or underwater production systems controlled remotely have been developed. Oil is generally produced in places far away from where it is used: in deserts, frozen wastes, jungles or far offshore. A pipeline hundreds of miles long or super-tanker – or both – may be the only way of getting the oil to the refinery where it will be turned into a useable product. To reach the edges of the reservoir, wells are commonly drilled at an angle. It is now possible drill vertically downwards and then outwards horizontally. This can save a great deal of money, as several wells can be drilled from a single, point and oil extracted from thin seams of rock. 3. Agree or disagree with the following statements: 1. Crude oil is the only hydrocarbon found in a reservoir. 2. Reservoir pressure causes problems. 3. The fluid extracted from the well usually contains oil. 4. Crude oil is a natural substance whose composition is stable.
4. Answer the following questions: 1. What team is needed to solve the problem of production? 2. Who usually estimates the quality and quantity of oil in a reservoir? 3. What is the reason of an increased recovery factor? 4. Is crude oil the only hydrocarbon found in a reservoir? 5. Does reservoir pressure cause problems? 6. Why is pumping so necessary? 7. What is the way to increase pressure? 8. Does oil in one reservoir differ from that of the other one? 9. What does oil look like? 10. What do production and transport methods depend on? 11. Where is it cheaper to drill oil? 12. What is the only way of getting oil to the recovery? Why?
5. Make your own sentences using the following expressions: 1) production 2) inject 3) production facilities 4) economically viable 5) recovery factor
6. Translate the following sentences into Russian: 1. Сырая нефть находится в подземных ловушках. 2. Давление необходимо, чтобы поднять нефть на поверхность буровой скважины. 3. Как только нефть извлекли, давление уменьшается. 4. Нефть добывается в местах, далеких от мест, где она используется: в пустынях, джунглях, далеко в морях. UNIT VI LIFE OF AN OIL WELL (Part I) 1. Words and expressions to be learnt:
2. Read and translate the following text:
LIFE OF AN OIL WELL (Part I) The life of a producing well begins with the first barrel of oil brought to the surface. It ends when the well is abandoned as uneconomical because the cost of producing oil is greater than the price received for it. The life of a well varies greatly from field to field. A small pool may be in production for only a few years, others may produce for 75 years or more. The recovery of oil is basically a displacement process. Oil does not have the ability to expel itself from the reservoir, but must be moved from the rock formation to the well bore by a displacing agent. Fortunately oil has two natural displacement agents that usually occur with it–gas and water. The varying pressures and the natural displacement agents provide general basis for different phases that are commonly called: the flush, settled and stripper periods of production. The flush production is usually the first stage in well’s life though not always. This occurs when the drill taps an oil-bearing formation that has enough natural pressure to enable the petroleum to flow by itself. With variations three types of “drives” can generate this force. Gas Cap Drive. Often there is a considerable cap of gas tapped above the oil in formation. When the rock is penetrated this gas expands and exerts enough pressure on the oil to move it toward the well bore leading to the surface. Dissolved Gas Drive. This is similar to a gas cap drive. In some oil accumulations the gas does not form a cap but remains dissolved in the oil. When the formation is opened the gas expands and drives mixture to the surface. In principle, this is similar to the action of gas dissolved in soda pop; gas expands when the bottle is opened. Water Drive. In many oil reservoirs water is present beneath the oil. In formations thousands of feet deep, the gas, oil and water exist under great pressure. When a drill opens the reservoir, the resulting release of pressure enables the underlying water to drive the oil to the well bore and in some cases, upward to the surface. As the natural water pressure reduces by oil production, water from the surrounding porous rock tends to flow into reduced pressure zone. Thus, water displaces oil and drives it toward the well bore. The second stage in a well’s life is a settled period of production. The settled production is reached when the initial pressure of a flush well expends itself and the well’s production rate tapers off to a lower average daily flow or a “settled” rate of production. At this point the well is usually put “on pump”. Many wells never flow naturally and must be pumped from the start. Others drop in flow rate shortly after the production begins and become settled early in their lives. The stripper period of production (the marginal production) exists when a well reaches the point of producing below its “settled” or economic rate. A stripper well is usually an older well which yield 10 barrels of oil a day but is kept in production because its output is steady and the yield is good over a long period of time. A stripper well is generally pumped intermittently allowing time for the oil to accumulate in the well bore. Today there are nearly 400, 000 stripper wells in the country and their slow but sure production gives us one-fifth of the oil supply.
3. Agree or disagree with the following statements: 1. The life of a well is just the same in every oilfield. 2. Oil has three natural displacement agents. 3. The flush production is usually the last stage in well’s life. 4. There are four types of “drives” which can generate the force that enables the petroleum to flow by itself. 5. In many oil reservoirs oil is present beneath the water. 6. Many wells always flow naturally and must not be pumped from the start. 7. A stripper well is usually a new well which yield 1000 barrels of oil a day.
4. Answer the following questions: 1. When does the life of a producing well begin and end? 2. How long may the reservoirs be in production? 3. What kind of a process is the recovery of oil? 4. What are the two natural displacement agents occur with oil? 5. What provides the general basis for different phases in the life of oil well and what are these phases? 6. What does the “flush production” mean? 7. What “drives” generate the force to expel oil to the surface? 8. Can you speak about each “drive” separately? 9. When do we speak that the well reaches its settled period of production? 10. What does the expression “to put the well on a pump” mean? 11. When do we speak that the well reaches its marginal production? 12. In what way are stripper wells pumped?
5. Complete the following sentences: 1. The life of a producing well begins … 2. A small pool may be … 3. Oil does not have the ability … 4. The flush production is usually … 5. When the rock is penetrated … 6. In some oil accumulations … 7. When a drill opens the reservoir … 8. The settled production is reached … 9. The stripper period of production … 10. A stripper well is generally pumped …
6. Give Russian equivalents to the following terms: 1. a producing well 2. uneconomical 3. the cost of a producing well 4. a displacement process 5. the ability to expel itself 6. a displacing agent 7. flush production 8. oil-bearing formation 9. oil accumulations 10. dissolved in the oil 11. beneath the oil 12. release of pressure 13. reduced pressure zone 14. pumped intermittently UNIT VII LIFE OF AN OIL WELL (Part II) 1. Words and expressions to be learnt: 1. sufficient - достаточный 2. insufficient - недостаточный 3. to reduce - уменьшать(ся) 4. water flooding [´ flʌ diŋ ] - закачка воды 5. gas flooding - закачка газа 6. secondary recovery methods - вторичные методы добычи 7. to include - включать (в себя) 8. carefully located - тщательно распланированное местоположение 9. auxiliary [ɔ: ɡ ´ ziljə ri] service wells - вспомогательные скважины 10. to permit - позволять, давать возможность 11. pattern - схема, план, сетка 12. essential - существенный, важный 13. to raise - повысить, поднять 14. case - случай 15. permeable [´ pə: mjə bl] - проницаемый 16. assist - помогать, помощь 17. enhanced [in´ hɑ: nst] oil recovery (EOR) - повышение нефтеотдачи пласта 18. tertiary [´ tə: ʃ ə ri] recovery - третичная добыча 19. miscible [´ misibl] displacement - вытеснение нагнетанием смешивающихся с нефтью жидкостей 20. acid [´ æ sid] - кислота 21. alkalis [´ æ lkə laiz] - алкалоиды 22. to add - добавлять 23. surfactants [sə: ´ fæ ktə nts] - поверхностно-активные вещества (ПАВ) 24. considerable - значительный 25. hydrochloric [´ haidrə ˏ klorik] acid - соляная кислота 26. frequently - часто 27. to prevent - предотвращать, мешать 28. reaction rate - скорость реакции 29. pay zone - продуктивная зона 30. to etch out - вытравливать, разъедать 31. tiny - крошечный, мельчайший 32. channel - ход, канал, путь (в породе) 33. well bore - забой скважины 34. mobile [´ moubail] - подвижный, мобильный 35. to push - продвигать, выталкивать 36. steam injection - закачка пара (в пласт) 37. fire flooding - поджиг 38. in situ [in´ si: tju: ] (лат.) - на месте нахождения 39. fracturing - гидроразрыв 40. specially treated fluid - специально (особо) обработанная жидкость 41. to split - раскалывать, расщеплять 42. fissures [´ fiʃ ə z] - трещины, щели 43. propping agents - расклинивающие агенты (при гидроразрыве пласта) 44. chemically compounded pellets [´ pelits] - таблетки, гранулы 45. walnut shells - ореховая скорлупа
2. Read and translate the following text: LIFE OF AN OIL WELL (Part II) When natural reservoir pressure is insufficient or when it has been reduced by production, oil engineers have learnt to increase the natural pressure. Water and gas flooding are often used as secondary recovery methods. Both methods include drilling, carefully located, auxiliary service wells to permit the most efficient injection pattern. This is essential for the optimum recovery. It should be noted that the applying of the secondary recovery methods permit to raise the extraction to 80 per cent in place. There are cases when some underground formations are not sufficiently permeable or crude oil is too viscous to allow the trapped oil and gas to move toward the well bore. When this happens nature is given a big assist by applying enhanced oil recovery (EOR) methods or tertiary processes which may be divided into four groups: chemical, miscible (gas), thermal and exotic. Various chemicals: acids, polymers, alkalis are added to the injection water in order to improve displacement efficiency when the major part of the oil is not recovered by water-flooding. These chemicals are called surfactants. They are pumped into reservoir and it takes a considerable time to increase the recovery of oil. Hydrochloric acid is frequently used, but in a modified form to keep the well equipment from corrosion, to prevent the acid to form an emulsion with the oil and to control the reaction rate. When the acid reaches the pay zone or production formation it reacts with certain materials in the reservoir rock etching out tiny channels through which oil and gas can flow toward the well bore. Polymers and alkalis make oil more mobile. Miscible recovery–a fluid (usually a gas) is injected into the well. Then it is mixed with the oil, reduces its viscosity and pushes the oil from the pores to the production well, then to the surface. The most commonly used hydrocarbon gases are methane, propane, butane or carbon dioxide. But the use of such gases gives problems because of corrosion well and production equipment. The most widely used thermal process is steam injection. Sometimes fire flooding in situ method is applied. The fourth group processes includes microbial recovery (oil-eating microbes), electrical heating (electrical stimulation of the reservoir), fracturing. All these processes are still at the research. Let’s take, for example, fracturing. Fracturing opens up underground channels for trapped hydrocarbons but by the force different than chemical reaction. A specially treated fluid is pumped into the producing well under extreme pressure, thus splitting rocks and opening horizontal fissures. Propping agents are added to the fluid–sand, metal or chemically compounded pellets and even walnut shells. When the pressure reduces, these propping agents keep the propped fissures open so that the oil and gas can flow toward the well bore more easily.
3. Answer the questions: 1. When are secondary recovery methods used? 2. What are the most commonly used? 3. What are EOR methods and when are they used? 4. What chemicals are added to improve displacement efficiency? 5. What acid is most frequently used? 6. What is miscible recovery? 7. What thermal process is most widely used? 8. What are the exotic enhanced oil recovery methods? 9. What is fracturing? UNIT VIII DRIVE MECHANISMS 1. Words and expressions to be learnt: 1. oil sands нефтеносный песок; нефтеносные породы 2. a pile скопление (песка) Популярное:
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