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Geothermal gradient

Тяжелая нефть | Устройство для удаления пятен | Фрахт судна без команды | Челночный вертолет | Эксплуатационное бурение | Aliphatic solvent | Slabbing board | British Gas Corporation (BGC) | Drilling contractor | Wet natural gas |


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  1. C) pressure gradient
  2. C) pressure gradient

a measure of the rise of rock temperature

with increasing depth below the

Earth's surface

Geophysics

the physics of the Earth, a hybrid discipline

involving a combination of physical

and geological principles

 

Heptane

the saturated hydrocarbon (alkane)

with seven carbon atoms in its molecule

(C7H16), the seventh member of the

paraffin series - a liquid under

normal conditions

 

Sealant polymer

a polymer added to drilling mud

in order to make a porous formation

impermeable

 

Hybrid platform

a gravity platform whose base and storage

area are made of reinforced concrete

but whose upper sections are

made of steel

 

Hydraulics

the branch of applied science that deals

with fluids in motion

 

Water hammer

the energy developed by the sudden

stoppage of fluid in motion

 

Hydrogenation

the process whereby a double

carbon-to-carbon bond is converted to a

single bond by addition of hydrogen

 

 

Hydroxyethylcellulose

a derivative of ethylene and cellulose

added to drilling muds as a suspension

agent, also widely used in the textile and

paper industries

 

Jet bit

a modified drill bit utilizing a hydraulic jet

to increase the drilling rate

 

 

Hydrophone

an underwater microphone used to

detect sound signals traveling through

the water

 

Hydrocyclones

cone-shaped centrifuges used for removing

sand, silt and other solid particles

from drilling mud, also called desanders

and desilters

 

 

Killing a well

overcoming the tendency of a well to flow

naturally by filling the well bore with

drilling mud of sufficiently high density

 

Homologous series

a series of hydrocarbons in which successive

members differ in molecular

composition by CH2, e g alkanes,

alkenes and alkynes

 

 

Horizon

a stratum or layer of strata assumed

to have been laid down in a continuous

manner

 

Massif

a consolidated mass of rock forming part

of a continent or mountain range which

has relatively uniform characteristics

 

 

Hotel platform, rig

see accommodation platform

 

Gravimetric survey

a geological survey method in which measurements

of the variations in the surface

gravitational field are used to determine the

nature of the underlying rocks

Gravity platform

a platform, generally made of reinforced

concrete, which sits on the sea bed and

is kept in position by its own weight, no

piling being used

Pressure

the force of one body acting on another

by weight or the application of power

Measured as force per unit area, e g

pounds per square inch (psi)

Double block & bleed

a valving arrangement which ensures no

flow in a line, even though the valves

may leak It consists of two block valves

in the main line, with a small bleeder

valve draining the line between the

block valves

Double

two sections of drill pipe, casing or tubing

joined together

 

 

Deaeralor

a piece of equipment designed to

remove dissolved oxygen and carbon

dioxide from boiler feed water in order to

reduce corrosion in the boiler system

 

 

Dehydration

the elimination or removal of water which is

chemically combined with a substance

 


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