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1. Pipelines may be classified as liquid lines, gas lines, multi-phase lines and water lines.
2. Multi-phase flow lines are designed to handle fluids which may contain both liquid and gas.
3. If scraper is not available, one can use a wax-knife to clean casing of wax, but handle it carefully in order to prevent any damage to it.
4. Cathodic protection is used to protect pipeline from wax build up.
5. Hot oiler is a person specially trained to stand high temperatures of the oil being produced.
6. Pigs are used only in the pipelines with thick pipe walls otherwise the noise they make when grunting inside would negatively affect oilfield personnel.
7. Hot oiling and running scrapers are two methods of well dewaxing.
ANSWER THE QUESTIONS IN ENGLISH
1. What is the purpose of pipelines in oil industry?
2. How can pipelines be classified?
3. What is specific in multi-phase lines design?
4. How can pipelines be protected from internal corrosion?
5. What is cathodic protection and how does it work?
6. What is dewaxing?
7. What types of dewaxing do you know?
8. Describe hot oiling operation.
9. What types of scraping tools do you know?
10. What is the inconvenience when using a wax-knife?
11. What is the difference between wax-knives and scrapers?
12. What purposes are pipeline pigs used for?
MAKE UP A SITUATION AND TALK TO YOUR FRIEND
1. Being a foreman answer a labourer's questions on methods of pipe dewaxing.
2. Talk to the site supervisor and find out how he is going to launch a pig and why.
3. Talk to the pipeline construction crew foreman and convince him that water pipelines can not be used for oil and gas and why.
MAKE UP 5 QUESTIONS TO THE TEXT AND ANSWER THEM
9. LISTEN TO THE TEXT ON THE TAPE
NEW WORDS
1. Blowdown valve - задвижка для стравливания давления, продувки
2. Bypass valve - задвижка отводной линии
3. End closure - глухой фланец, крышка камеры
4. Flow tee - тройник линии притока
5. Pig - обрабатывать скребком.
6. Pig launcher - камера пуска скребков
7. Pig receiver - камера приема скребков
8. Pig trap - ловушка скребка
9. Pigging bars -решетка для скребка
10. Purge - очищать, удалять
11. Reducer - ограничитель, переходник
12. Sweet gas system - система очистки газа от сероводорода
LISTEN TO THE TEXT AGAIN
ANSWER THE QUESTIONS
1. Why is it always necessary to ensure that a pig receiver is set up to receive a pig before launching a pig?
2. When inserting a pig into a launcher how far can one push it?
3. Why is it always necessary to stand to the side when opening the end closure?
RETELL THE TEXT
READ THE TEXT TO CHECK YOURSELF
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