Exploration – Wild Cat
Conventional Design – Telescopic
Complex Design – Manobore
Production hole drilling phase
Liners and Tiebacks
Typical Well Design
Designs of Wells
Extended Reach Wells
Main Components of a Drilling Rig
Power and Prime Movers
Well Control Component
Well Control Equipments:
Blowout Preventers (BOP)
Choke and Kill Lines
Choke and Kill Manifolds
Upper and Lower Kelly Cocks
Drill Pipe (DP)
Heavy Weight or Heavy Wall Drill Pipe (HWDP)
Downhole Drilling Tools
Measurement While Drilling Tools (MWD)
Logging While Drilling Tools (LWD)
Pressure While Drilling Tools (PWD)
Seismic While Drilling Tools. (SWD)
Types of Bits
Fixed Cutter Bit
Drill pipe (DP), Heavy weight drillpipe (HWDP), drill collar (DC), casing (csg) and tubing (tbg) described the following data:
- Outside diameter (OD)
- Weight of pipe (pounds/f t, #/ft, ppf)
- Grade of the pipe (Combination of letter and number for example: grade K-55). The number represents the yield of the pipe multiplied by 1000 psi)
- Length of the pipe (ft, m)
Cased hole completion
Artificial Lift systems
The space between hole (wellbore, casing) and the outside the pipe (drillpipe, casing, tubing etc). Drilling fluid is pumped through the drillpipe and then up the annulus.
Top of the cement in the annulus.
Top of liner.
It is the setting depth of the casing or end of the casing where it is cemented in a particular phase. It is also referred as casing shoe depth.
Abbreviation for Bottom Hole Assembly. The part of the drill string from bottom of the DP (which is top of the DC) to the bit. Generally includes bit; subs, stabilizers,
reamers, other downhole tools and all drill collars. Can also include Heavy Weight drillpipe.
Various kinds of rock with different or same mineralogy that the well will be drilling.
MD and TVD
Measured depth along the well and TVD is the true vertical depth of the well.
Abnormal pressure > 0.465 psi/ft
Normal pressure = 0.465 psi/ft
Sub-normal pressure < 0.465 psi/ft
More details can be obtained from 501 Solved Problems for Drilling Operations.
The Oil Drilling (Video)
The Mud Lag Time (Video)
The General Calculations(Video)
The Weatherford RSS (Video)
The Gyrodata RSS (Video)
The Dyna-Drill Motor (Video)
The Jaguar Mud Motor System (Video)
The Baker Hughes Navi-Drill (Video)
The Mud Motor Basic Function (Video)
The Hunting Mud Motors (Video)