OBM Rheology Modifier


Global Drilling Fluids and Chemicals Limited at its manufacturing Facility in Gujarat, India manufactures one of the most Popular Oil Base Mud Additives for the Oilfield Industry chemically Known as Oil Base Mud Rheology Modifier. 
We manufacture the same in a wide variety of Grades. Please also see:
GLO ASPHOTEX 1000 (OBM Rheology Modifier) manufacture by GDFCL is a modified sodium sulphonated asphaltic compound. Its versatile mud conditioner contributes to the stability of drilling fluids, stabilizes shale, inhibits dispersion of drilled solids, reduces torque and drag, controls high temperature water loss and acts as an alternative to oil usage etc. and aids emulsification of oil.
For shale control, fluid loss control, Torque and Drag Reduction ,Inhibition of Swelling clays  of all water mud’s.
COMMON NAME - Sulphonated Asphalt /Sulfonated Asphalt
  • It compatible with all water based mud systems.
  • Improves lubricity thereby reducing torque and drag of the drilling string.
  • Seals small fractures in stressed shale formulation.
  • Prevents bit and down hole assembly bailing by preferentially oil wetting the drill string.
  • Reduces the down hole with temperature fluid loss and contributes to corrosion inhibition.
  • Controls high temperature water loss.
  • Inhibits swelling  clay and water wetting of shale’s
  • Reduces HTHP(High Temperature High Pressure) Fluid Loss
  • Improves Filter cake Quality and helps seal micro fractures 
Physical Properties:
Properties Value
Appearance Blackish brown  powder
Bulk Density 850-950 Kg / m3
PH (1% Solution ) >8.5
Moisture Content (% by weight) < 10
Solubility in  water (%)
Min 75
Solubility in Oil (%) Min 25
Solubility 75% Soluble in water balance Soluble in Oil
Sulphonat Group Positive
Thermal Stability 250°C
Particle Size > 90% through BSS 40.
HPHT Fluid Loss ml/30 Min 25-30
Lubricity Coeficient 0.3 Max
GLO ASPHOTEX 1000 (OBM Rheology Modifier) manufacture by GDFCL is a Free flowing Powder and can be added Directly to the Mud System through the Mixing Hopper with a good Agitation system. Typical concentration range from 3-7 lb/bbl (8.55 Kg/m3 -20 Kg/m3) for shale Stabilization. Dosage may be Increased to 10 lb/bbl if required. 
GLO ASPHOTEX 1000 (OBM Rheology Modifier) manufacture by GDFCL is  packed in 25kg or 50 Lbs (22.68 Kg) sacks or 1.2 Mt Jumbo Bags . Private Labeling and customized packaging is also available on request.
Safety and Handling:
GLO ASPHOTEX 1000 (OBM Rheology Modifier) manufacture by GDFCL must be handled as a Industrial chemical, wearing protective equipment and observing the precautions as mentioned in the MSDS
For Further Information on GLO ASPHOTEX 1000 and Information on Performance and Case Studies Please contact us at This e-mail address is being protected from spambots. You need JavaScript enabled to view it