Gilsonita in oil and water base drilling

Gilsonita in oil and water base drilling

Gilsonita is generic name widely used for a glossy black carbonaceous resin classified as an asphaltite. Its name of Gilsonite which is using in Spanish language. An important feature of gilsonita is the temperature of its softening point. In oil-based sludge it is used as an agent to control fluid loss. Being a hydrocarbon is naturally wetted by oil. In water-based sludge it is used as an additive for shale stabilization and is difficult to evaluate unless it is tested at its softening point or at a higher point. As a hydrocarbon, the powder should be coupled to water using a glycol or similar water-wetting agent.

Drilling Gilsonita

Gilsonita is a solid hydrocarbon of the group of asphaltites has been present in both sedimentary rock outcrops and subsoil (related to either the possible rock fountain or to subsequent silastic sequences), and taking advantage of zones. It is bright, black, concoideal fracture, in appearance very similar to that of Obsidian mineral.Gilsonita was detected in two wells, in both cases caused serious problems during drilling such as sludge and packing losses, since the appearance of this mineral in the subsoil presents complications from the point of view at depths greater than 6500 feet. The occurrence information of Gilsonita during well drilling is scarce as is the documentation of geological studies related to its genesis in watersheds. Dissemination of results of drilling and analysis of samples allows the opening of a technical discussion for both exploration and drilling activities (analysis of wells and outcroppings, dissolution methods, identification with seismic attributes, generation - migration processes hydrocarbons, etc.) in order to know the experience of this type of occurrences in subsoil.

Gilsonita has a hardness of between 2 and 2.5 and a specific gravity of 1.07. Contains 40 to 50% carbon and burns with bright flame easily. It is used in oil well drilling additives to control fluid loss and filtering control. It is similar to a hard petroleum asphalt and is often called a natural asphalt, asphaltite, uintaite, or asphalt .gilsonia is soluble in aromatic and aliphatic solvents as well as petroleum asphalt. Due to its unique compatibility, It is frequently used to harden softer products derived from petroleum.

It is in mass is a bright, black substance similar in appearance to the obsidian minerals. It is fragile and can be easily crushed into a dark brown powder.Gilsonita is found beneath the surface of the earth in vertical veins or seams that are generally between two and six feet wide.

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