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1. Intermediate casing spool is used along with intermediate casing hanger to suspend intermediate casing. 2. Tubing head adaptor flange is placed in between wellhead and christmas tree. 3. After the christmas tree is installed it should be pressure tested in order to check it for leaks. 4. One should never forget to bleed off pressure when having equipment pressure tested. 5. Generally they install two master valves on christmas tree but only the upper one is usually used thus keeping the other one for 6. Adjustable choke is а very important part of christmas tree as it regulates oil and tubing pressure. 7. Dognut is attached to the wellhead by means оf screwlegs. valves to control pressure.
TRANSLATE INTO ENGLISH
1.Обычно скважина работает через регулируемый штуцер. ствольной задвижки, блока-крестовины, оголовка елки, 6.Для обеспечения герметичности фонтанной арматуры используют первичное и вторичное уплотнения, а также 7.Муфтовая подвеска типа А-1 имеет внутреннюю резьбу с обоих концов, совпадающую с резьбой применяемых НКТ. 8. 9.Трубная головка представляет из себя катушку с двумя фланцами, которая устанавливается на колонную головку.
FIND INCORRECT STATEMENTS AND CORRECT TНЕМ 1. The main purpose of christmas tree is to indicate where the well is located especially when it is covered with snow. 2. Casing spool provides for internal configuration for casing hanger. -: 4. Tree top adaptor is generally used for а choke installation which shows tubing pressure. 5. Master valve internal diameter must be equal to or bigger than internal diameter of tubing being used. б. Pressure test is not really important if primary and secondary seals are installed. Tubing hanger is used to suspend tubing string in the hole.
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