DRILLING FLUIDS

Geflow’s Gilsonite is the only drilling fluid additive that provides all of these benefits:

•  Control fluid loss
•  Stabilizing shales
•  Prevents circulation lost
• Strengthens wellbore to increasing wellbore stability
• Minimizing differential sticking
•  Promotes effective filter cake development
•  Performing in oil- and water-based drilling muds
•  Performing in HP/HT environments
•  Minimizing HSE risks

Geflow’s Gilsonite prevents formation damage Gilsonite forms a physical and chemical bonds with permeable formations, creating an effective seal to prevents the passage of drilling fluids. By uniquely functioning as both a malleable and solid plugging agents, Gilsonite controls fluid losing and seepaging, preventing lost circulation and protects reactive and low-reactive shale surfaces, even at elevated bottomhole temperature.
Strengthen proven the wellbore HT/HP wells, shales and underpressured zones require specialized drilling fluid and wellbore-strengthening technique. Adding Gilsonite to a SBM, OBM or WBM strengthens the well by:

• Reduce the pore pressure transmission and sealing micro-fractures in shale and low-porosity sand
•  Keep the interbedding formations intact
•  Develop the effective filter cake
• Provide the “smear effect” that creates a continuous protective sealant along the wellbore wall Most effective additive to prevent differential sticking
  Gilsonite minimizes the occurrence of stuck pipe and stuck logging tools by thoroughly sealing permeable formation, even in zones with a highly overbalanced pressure differential and improve the filter cake lubricity.

HEALTH, SAFETY AND ENVIRONMENTAL ADVANTAGE
All-natural Gilsonite is safe for operations Naturally occurring Gilsonite has significant health advantages over synthetic product. Gilsonite is;

•  Non-toxic (unlike coal or fly ash)
•  Non-carcinogenic
•  Non-mutagenic

Gilsonite is safe to handle, use and storage, and passes discharge requirements for deepwater operations.

CEMENTING

For more than 55 years, the industry has depended on Gilsonite as a lost circulation additive and a critical component for primary cementing operations in some of the world’s toughest drilling environment.
Adding Gilsonite during cementing operations enhancing characteristics that are critical to effectively cementing the casing, isolating hydrocarbon formations and preventing annular gas flows.
By its physical and chemical properties, Gilsonite providing a range of important benefits in slurry and set cement that are unmatched by any other single additives.

Cement slurry benefit
• Increasing the yield
• Reducing slurry weight
• Controling free water
• Lowering slurry water ratio
• Promoting the favorable rheologies resulting in lower ECDs
• Preventing the lost circulation
• Scours wellbore/enhances mud removal Set cement benefit
• Maintaining the compressive strength, unlike coal or fly ash
• Increasing the flexibility
• Reducing the cracking
• Heals micro fissures
• Reducing the permeability
• Strengthens bond to the formation and the casing
• Reducing the environmental risk
• Assures zonal isolation
Eliminates the problems of free water by Gilsonite By controlling free water, Gilsonite helps stabilize slurry and eliminates the need and cost of additional free-water-control agents. As a lost circulation materials, it also improves zonal isolation by preventing water channeling on the wellbores.