Learning Info

A Brief History of Oil
06.05.2017
3 271
A Brief History of Oil
Oil is a uniquely rich energy source. The amount of energy stored in a gallon of oil is equal to the…
Hand Tool: Wrench Size Chart
06.05.2017
9 568
Hand Tool: Wrench Size Chart
Wrench Size Chart
Drilling Rig Rotary System
04.05.2017
26 331
Drilling Rig Rotary System
The rotary system includes all of the equipment used to achieve bit rotation. Originally, the main d…
Drilling Fluid Classifications: Pneumatic Fluids
02.05.2017
5 630
Drilling Fluid Classifications: Pneumatic Fluids
Pneumatic (air/gas based) fluids are used for drilling depleted zones or areas where abnormally low…
Drilling Fluid Classifications
02.05.2017
7 685
Drilling Fluid Classifications
 Drilling fluids are separated into three major classifications: •  Pneumatic&nb…
Casing Handling Tools
29.04.2017
14 248
Casing Handling Tools
A wide variety of the elevator and spider assemblies are available to run casing. Some elevators are…
Casing Size Selection
29.04.2017
10 177
Casing Size Selection
Once the setting depths have been determined the next step is obviously to select the sizes of the c…
Standard Gravity
28.04.2017
2 087
Standard Gravity
In the preceding formula, the specific weight is determined from the specific mass using the local a…
API 8-rd Connections
28.04.2017
22 901
API 8-rd Connections
The most common type of casing connection in use is the API 8-rd connection, where 8-rd means 8-roun…
Commonly Used Bit Sizes That Will Pass Through API Casing
25.04.2017
13 026
Commonly Used Bit Sizes That Will Pass Through API Casing
You may need to use the following below table to determine bit size and casing size. 
Casing Joint Length
25.04.2017
13 500
Casing Joint Length
The lengths of casing joints vary. In the manufacture of seamless casing, it all depends...
Casing Dimensions
25.04.2017
14 064
Casing Dimensions
Casing comes in odd assortment of diameters ranging from 4.-in. to 20-in. that may seem...
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