Gilsonite drilling fluid loss controller additive

Gilsonite drilling fluid loss controller additive

The invention relates to a composition comprising an drilling Gilsonite HPHT fluid loss control 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 gilsonite fluid loss control aid broadly comprises a Gilsonite (asphaltite, asfaltit,Gilsonita,uintaite, natural asphalt, natural bitumen) which also contains a surfactant such as a nonionic surfactant. The HPHT fluid loss control aid also contains 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.
To achieve these and other advantages, and in accordance with the purpose of the invention, as embodied and broadly described, the invention comprises a composition comprising an HPHT fluid loss control aid stable at elevated temperatures, and which also acts as an excellent shale stabilizer, bore hole lubricant sealant for depleted sands, and wall cake conditioner. The HPHT fluid loss control aid broadly comprises Gilsonite, an asphaltic material or solidified hydrocarbon produced by ATDM Gilsonite Company in Iran. The Gilsonite employed according to the present invention also contains a surfactant, especially, a nonionic surfactant.

Gilsonite is high temperature high pressure filtrated loss additive

combination of these compounds as a HPHT fluid loss control aid, reduces HPHTfiltrate loss has good stability at elevated temperatures such as at about 300 °F and sometimes as high as 400 °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 drilling fluid properly conditioned and lowers total well costs. The invention also comprises a product made by combining the components of the composition as well as a product made by the process of adding the composition or product to a drilling fluid. Lastly, the invention comprises a process for controlling HPHT Gilsonite drilling fluid loss in subterranean wells by adding the composition or product into a subterranean well.
Drilling fluids as used in the written description and the claims include not only conventional drilling fluids or drilling muds including petroleum oil, synthetic oil and fresh water and salt water types as known in the art but also completion fluids and work over fluids.

Related Products

Gilsonite support cementing of oil well

Gilsonite support cementing of oil well

A cement produced by Gilsonite is suitable for blocking or plugging an abandoned pipeline or back filling a mine shaft, tunnel or excavations contains Portland cement or a mixture of at least two components selected from Portland cement, A cementitious slurry, formulated from the cement mix, may have a density less than or equal to 1500 kg/m3, and exhibits good compressive strength. In the formulation of the cementing composition of the invention, it is preferable to employ [...]

Gilsonite construction grade in asphalt and pavement

Gilsonite construction grade in asphalt and pavement

Gilsonite has been the subject of exhaustive study to improve characteristics for use in paving. Various properties of asphalt are manipulated to produce a product that has the appropriate wear properties, rut resistance, fatigue and low temperature cracking resistance, adhesion strength, viscosity and pour point. Rut resistance is resistance to longitudinal surface depressions in the wheel paths. Adhesion strength is the maximum adhesion strength of the joint sealant and the joint reservoir, including but not [...]

Gilsonite ink grade

Gilsonite ink grade

ATDM Gilsonite Ink grade is a quick drying high gloss and corrosion resistant asphalt enamel. It is using for fully resistance to water, acids, alkalis, electrolysis and natural elements.Gilsonite ink powder is readily soluble without heating in aromatic solvents (Benzene, Toluene, Xylene) and in most chlorinated solvents. It is also soluble without heating in aliphatic and low aromatic solvents (VMP and other Naphtha, Ink Oils and Mineral Spirits), but mixing time is longer. Without heating, the pulverized [...]

Gilsonite paint and coat grade

Gilsonite paint and coat grade

Maximum water and weather resistance is obtained by using a paint containing gilsonite coat and the gas-proofed tung or oiticica (or mixtures of the two) oil without the addition of any other drying oil, but it is found that while this combination is commercially usable, it is difficult to brush, and it is preferred to add a viscosity reducing drying oil. For this purpose it is found that perilla oil is particularly satisfactory. Other drying oils such as linseed, soya bean, sunflower seed, hemp seed, menhaden, or [...]

gilsonite increase softening point and performance of road

gilsonite increase softening point and performance of road

Gilsonite asphalt grade is natural occurring hydrocarbon substances characterized by a high softening point (above 110° C) in the class known as asphaltite. They are mined much like other minerals and sold essentially in their native state. They are fully compatible with asphalt and have long been known as asphalt hardeners and reinforcing agents. Gilsonite applicable in asphalt is currently sold all over the world as an asphalt modifier in the form of a dry bulk solid granular powder.Gilsonite increase [...]

Gilsonite foundry grade

Gilsonite foundry grade

Gilsonite foundry sand help:1. Reduce imperfections due to the rapid reaction between the silica sand mold and the oxidized surface of molten iron.2. Improve sand peel from casting at shakeout.3.Produce smoother, cleaner casting surface.4. Minimise imperfections, casting losses, scrap.Foundry gilsonite additivesDuring pouring, the gases given off from the gilsonite which is carbonaceous additives form a gaseous film which prevents the molten metal from making direct contact with the clay-coated [...]