Drilling Equipment
The Effect of Weighting Materials on mud
Barite Barite (or barytes) is barium sulphate, BaSO4 and it is the most commonly used weighting material in the drilling industry. Barium sulphate has a specific gravity in the range of 4.20 - 4.60. The specific gra…
Drilling Equipment
WELL CONTROL SYSTEM
Blowout preventers (BOPs) Blowout preventers (BOPs), in conjunction with other equipment and techniques, are used to close the well in and allow the crew to control a kick before it becomes a blowout. Blowout preventer equipment sh…
Oilfield Glossary
Handling Tools for Drilling
Spinning Chain A relatively short length of chain attached to the tong pull chain on the manual tongs used to make up drill pipe. The spinning chain is attached to the pull chain so that a crew member can wrap the spinning cha…
Oilfield Glossary
Bottom hole assembly
Float Collars A float collar is a one way valve placed at one or two joints above the shoe. The float collar provides the same functions as a float shoe by preventing fluid back flow into the casing: mud backflow during running in…
Drilling Equipment
Introduction to Drilling Bits ROLLER CONE BITS
DRILLING BITS: ROLLER CONE BITS: As the name implies, roller cone bits are made up of (usually) three equal-sized cones and three identical legs which are attached together wi…
Drilling Equipment
Oil Well Drilling mud pits
MUD PITS Mud pits are required for holding an excess volume of drilling mud at the surface. This surface volume allows time for settling of the finer rock cuttings and for release of entrained gas bubbles not mecha…
Drilling Equipment
Drilling Mud Circulation System
CIRCULATING SYSTEM A major function of fluid-circulating system is to remove the rock cuttings from the hole as the drilling progresses. Drilling fluid is most commonly a suspension of clay and other materials in water…
Drilling Equipment
Drilling Rig Rotary Table Sizes
Land drilling rigs can be classified according to the drilling depth into different sizes Light duty rigs: drill holes from about (3000-5000 ft) deep or (1000-1500 meters Medium duty rigs: drill to depth ranging from (4000-10000 ft)…
Drilling Equipment
Machining, Rotary Drilling Methods
CABLE TOOL METHOD Cable tool method has its beginnings 4000 years ago in China. it was the earliest drilling method and has been in continuous use for about 4000 years. The Chinese used tools constructed of bamboo …
Oilfield Glossary
Drilling problems Lost Circulation
LOST CIRCULATION Lost circulation is the loss of mud or cement to the formation during drilling operations. Lost :circulation causes . increased well costs, due to lost rig time and loss of expensive drilling fluid - . …
Oilfield Glossary
Rotary System accessories
Pipe Ramp An angled ramp for dragging drill pipe up to the drilling platform or .bringing pipe down off the drill platform Pipe Rack .A horizontal support for tubular goods RAT HOLE A hole in the rig floor 30 to 35 feet…
Oilfield Glossary
Cement Plugs Oilfield Glossary
Cement Plugs The main functions of cement plugs are,below Separate mud from cement Wipe the casing from mud before cement is pumped and then wipe casing from the cement - .film after the complete volume of cement is pumped …
Drilling problems
Cementing equipment Hardware
CEMENTING HARDWARE : Some or all of the following equipment is used during cementing operations Guide shoes A guide shoe is used to guide the casing through the hole, avoiding jamming the casing in washed…