Gilsonite

Natural Asphalt Natural Bitumen

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Gilsonite in Oil & Gas

FLUID LOSS CONTROL

FILTRATE LOSS CONTROL

FLC

 

 

 

 

 

 

 

ABOUT THE GILSONITE

What is Gilsonite?

Gilsonite is a natural, resinous hydrocarbon. This natural asphalt or Natural bitumen  is similar to hard petroleum asphalt and is often called a natural asphalt, asphaltite, uintaite, or asphaltum. Gilsonite is soluble in aromatic and aliphatic solvents, as well as petroleum asphalt. Due to its unique compatibility, Gilsonite is frequently used to harden softer petroleum products. Gilsonite in mass is a shiny, black substance similar in appearance to the mineral obsidian. It is brittle and can be easily crushed into a dark brown powder.
Gilsonite is found below the earth's surface in vertical veins or seams that are generally between two and six feet in width, but can be as wide as 28 feet. The veins are nearly parallel to each other and are oriented in a northwest to southeast direction. They extend many miles in length and as deep as 1500 feet. The vein will show up on the surface as a thin outcropping and gradually widen as it goes deeper. Due to the narrow mining face, Gilsonite is mined today, much like it was 50 or 100 years ago. The primary difference is that modern miners use pneumatic chipping hammers and mechanical hoists.

 

SIMPLE SPECIFICATION OF GILSONITE

Test Test Result Method
Color in Mass ---- Black
Color in streak or Powder ---- Brown
Specific Gravity at 25/25 C ASTM-D3289 0.8
ASH content, wt% ASTM-D3147 7.60
Moisture content wt% ASTM-D3173 0.5
Volatile matter at 900C ASTM-D3175 62.3
Solubility in cs 2 wt% ASTM-D4 74.9
Softening point C ASTM-D-36 160
Penetration ---- 3
Flash point ---- 380-400 F
Fixed carbon ASTM-D3172 27.5
Elemental analysis:
N content , wt%
C content , wt%
H content , wt%
S content , wt%
ASTM-D5291
ASTM-D5291
ASTM-D5291
Lp-242
0.59
74.4
7.3
4.5

Other specification according to API or OCMA standards.

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