Geology
Well Design
Drilling Tools
Rig Equipment
Technology
100
Formed by transformation of pre-existing rocks as a result fo high temperature and pressure
What is metamorphic rock?
100
This is where the well deviates from vertical
What is the kick off point?
100
This is often called a "drag" bit
What is a PDC bit?
100
This eliminates wave motion whilst drilling
What is the motion compensator?
100
This pipe connects the drillpipe to the drill collars
What is heavy weight drill pipe?
200
The Jurassic period is part of this Era
What is Mesozoic era?
200
This is usually designed to be at least 200psi above the pore pressure
What is mud weight?
200
These helps keep the pipe centred during cementation
What is a centraliser?
200
Failure to keep the hole full of mud whilst tripping can cause this.
What is a kick?
200
This is a tool that determines if there is a bond between the casing and the formation
What is a cement bond log tool?
300
A structural trap which is a fold, concave upward with younger rocks in fold
What is a syncline
300
This can be solved by changing the well trajectory or mud weight.
What is wellbore instability?
300
This is how single joints of pipe are made up to the drill string
What is a mouse-hole connection?
300
This is a more efficient rotating system for the rig.
What is a top drive system?
300
This type of drilling fluid does not react with shales and clays
What is oil / synthetic oil based mud?
400
Barrier that inhibits movement or oil and/or gas
What is a seal?
400
This string is the primary barrier in the well
What is the production casing?
400
This gives us the inclination and azimuth of the wellbore.
What is MWD reading?
400
This is the primary method of removing solids from the mud
What is the shaker system?
400
This has allowed deeper and more tortuous wells to be drilled.
What is a rotary steerable drilling tool?
500
The percent of interconnected void spaces in the rock
What is effective porosity
500
This is a critical part of the lower completion and failure to do correctly will result in excess water production
What is zonal isolation (with cement)?
500
This kind of bit is more likely to result in drillstring failures due to the high WOB they require
What is roller-cone bit
500
This is part of the hoisting equipment that often sits on the rig floor
What is the draw works
500
This type of casing / liner will not taper the well casing strings as standard casings will
What is expandable casing?
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