Drilling Fluid Loss Control Additive
Iran Gilsonite FLC Drilling Fluid Loss Control Additive
There are basically three types of drilling muds:
1– Oil-Based-Muds – OBM: Base material is Oil product, such as diesel oil
2– Water_Based_Muds – WBM: Base material is water
3– Synthetic_Based_Muds – SBM: Base materials is polymers
Gilsonite is vastly used in all drilling muds but in different aspects and manners.
In oil-based muds, Gilsonite acts as a Fluid Loss Control agent or FLC. While as a hydrocarbon, it reacts well with the base material of the mud and increases the drilling efficiency significantly. Also since Gilsonite has a high softening point, applying Gilsonite will significantly reduce the loss of fluids.
In stricter environmental drilling, where Synthetics Muds are used, applying Gilsonite may decrease the costs by 80% compared to the substitute material UHT-Co Polymers.
Gilsonite in drilling application has several market myths and complications. One issue is that the natural bitumen from Iran has increasingly replaced the American Gilsonite among the mud makers, especially in Asia. This is because the price of Iranian Gilsonite is nearly 30% of the AmericanGilsonite, while the quality of Iranian Gilsonite responds well to the international standards of Drilling Mud, defined by the Oil companies.
Fluid loss control by Gilsonite
HPHT Gilsonite fluid loss control additive aid stable to the high temperature such as 400°F. The composition comprises a mixture of a uintaite such as natural asphalt in combination with solubilized lignite such as a causticized lignite and carbon black. The HPHT fluid loss control aid also comprises a product made by the process of combining the uintaite such as natural bitumen solubilized lignite such as causticized lignite and carbon black with one another since in some instances the natural asphalt and lignite might interact with one another and change the nature of the starting compounds. Additionally, the introduction of the composition of matter of the present invention into a drilling fluid could also alter the foregoing compounds used in the composition, and for this reason the invention also comprises a product produced by the process of combining the various compounds for the manufacture of the composition as well as a product produced by introducing the composition into a drilling fluid.
HTHP Gilsonite Fluid Control Loss Additive
The invention also comprises a process for the control of HPHT fluid loss in subterranean wells by adding the composition or product produced by the process of forming the composition into a subterranean well. An uintaite employed according to the present invention may comprise natural asphalt an asphaltic material or solidified hydrocarbon which may be found in Utah and Colorado and may comprise one of the purest natural bitumen.
Gilsonite Drilling Mud Additive
The product relates to a composition comprising an HPHT drilling fluid loss control additive aid, stable at elevated temperatures and which also acts as an excellent shale stabilizer, bore hold lubricant, sealant for depleted sand, and wall cake conditioner. The HPHT fluid loss control aid broadly comprises a Gilsonite (asphaltite, Asphaltum, Gilsonite, uintaite, natural asphalt, natural bitumen) which also contains a surfactant such as a nonionic surfactant. The HPHT fluid loss control aid also contains a solubilized lignite such as causticized lignite and carbon black. The fluid loss control aid reduces HPHT filtrate loss, has good stability at elevated temperatures such as at 300 °F, stabilizes troublesome shales and decreases bore hole erosion, helps seal depleted sands, reduces torque and drag, causes no adverse effects on the flow properties of the properly conditioned drilling fluid, and lowers total well costs.
