oil and gas

the passage of oil depends on the viscosity of the fluid and the permeability of the porous stratum but most importantly on driving pressure. this can be due surface gas, as in gas- cap reservoir, or to water as in water –drive reservoir. at the surface gas often comes out of solution in the oil and helps to lift the oil by expansion. this is often enhanced by passing gas down between the tubing and casing to promote the «air-lift» effect.

the production from each well paces to a central gathering station where gas is separated and solids are removed by either setting or centrifuging . the gas separation is purely mechanical at this stage. the separated crude oil and gas are now ready for further processing.

wells often must be treated to improve the recovery from a reservoir , or to remove barriers within the producing formation which prevent easy passage of the fluid into the well-bore. such processes are knows as well-stimulation treatmen​

my room is very light and large. there is a sofa on the right.next to the sofa there is a yellow nightstand. you can see a vase with flowers on my dresser. on the left side of the dresser there is a window. and next to the window there is my desk where i do my homework. of course,  i have a computer desk with my new net-book which connected to internet. along the long wall of my room there is a book-case with many shelves for books and cd-disks. there are some posters with my favorite pop-singers on the walls. and in the middle of the room there is a colorful carpet. i love my room!

  моя комната светлая и большая. справа стоит диван. рядом с диваном есть желтая тумбочка. вы можете видеть вазу с цветами на моем туалетном столике. с левой стороны от комода есть окно. а рядом с окном мой стол, где я делаю . конечно, у меня есть компьютерный стол с моим новым ноутбуком, который подключен к интернету. вдоль длинной стены моей комнаты есть книжный шкаф с множеством полок для книг и компакт-дисков. есть несколько плакатов с моими любимыми поп-исполнителями на стенах. а в середине комнаты есть красочный ковер. я люблю мою комнату!