{"id":3355,"date":"2017-03-05T10:21:23","date_gmt":"2017-03-05T06:51:23","guid":{"rendered":"http:\/\/gilsoniteco.com\/?page_id=3355"},"modified":"2017-09-10T11:53:08","modified_gmt":"2017-09-10T08:23:08","slug":"oil-gas","status":"publish","type":"page","link":"http:\/\/gilsoniteco.com\/?page_id=3355","title":{"rendered":"Oil & Gas"},"content":{"rendered":"

Oil & Gas<\/p>\n

\"Oil<\/p>\n

Gilsonite in Oil & Gas<\/h2>\n

With unmatched benefits in cementing and drilling fluids, Gilsonite is proven under pressure.
\nWith a unique blend of strength, flexibility, bonding and high-temperature capability, Gilsonite adds properties that increase performance in cementing and drilling fluids in a way no other single additive can.<\/p>\n

Gilsonite, the recognized industry standard for filtration control, is equally effective at controlling lost circulation and improving wellbore stability.<\/p>\n

Gilsonite in oil and gas well cementing is a highly developed technology. Cement-water slurries, with or without various additives, have been used for many years in cementing procedures carried out from time to time during the drilling of the productive life of a well. Cementing is often applied during drilling and completion procedures in connection with the protection of production zones, isolation and confinement of water zones, support of borehole wall, anchorage of the casing, and control of lost circulation not overcome by methods associated with the circulation of drilling mud. Such cementing procedures by Gilsonite additives are ordinarily regarded as being of the primary character.<\/p>\n

Gilsonite<\/a> is used in drilling mud fluids<\/a> and oil well cementing<\/a>. Gilsonite, in a range of softening points and particle sizes, is a standard ingredient in oil-based drilling muds<\/a> used in shales and other difficult geological formations. The addition of specially-treated Gilsonite to water-based drilling fluids<\/a> helps minimize hole washout by stabilizing troublesome shales and seals off highly permeable sands while reducing torque and drag. \u00a0The addition of Gilsonite to oil well cement reduces slurry weight without loss of compressive strength and acts as an effective bridging and plugging agent to seal fractures in weak formations while cementing. \u00a0Also, Gilsonite use in Mud drilling according to FLC ” Filtrate Loss Control ” or \u00a0” Fluid Loss Control<\/a> ” in oil base mud.<\/p>\n

In oil & gas<\/strong> industry, drilling fluids or liquids perform a variety of functions that influence the drilling rate, the cost, efficiency, and safety of drilling operator. There are many types of drilling fluid systems<\/a> available such as water base muds, oil base muds, stable foam muds, air or gas base muds from which the right system may be chosen. Main drilling mud additives<\/a> include viscosifying agents, fluid loss control agents, drilling fluid dispersants and corrosion inhibitors. Cement and cement additives<\/a> are considered to be critical inputs in the completion of any oil and gas well.<\/p>\n

An important characteristic of Gilsonite is its softening point temperature. In oil-based muds, it is used as a fluid-loss control agent. In water-based muds, it is used as a shale stabilizing additive and is difficult to evaluate unless tested at or above its softening point.<\/p>\n

Gilsonite is effective at sealing off permeable formations even when drilling such zones at a highly overbalanced pressure differential. In this manner, Gilsonite helps prevent the occurrence of stuck pipe and stuck logging tools across these zones.<\/p>\n

Gilsonite is used in cementing slurries to provide density control, scouring action for mud removal, and to support compressive strength development. It has a unique reaction with shale that improves cement bond development and strength.<\/p>\n

All the common varieties of Gilsonite are substantially incompressible and have a specific gravity sufficiently near to that of water that properly sized granules of the Gilsonite can be readily suspended in the aqueous liquid carrier. Thus, Gilsonite is used for this purpose in powder. Pellet size is variable according to the characteristic of the wellbore. The softening point is very important, as Gilsonite must soften at a temperature above the temperature of the well formation. The recommended softening point is from 150<\/span> to 180<\/span>\u00b0C and pellet from 4<\/span> to 100<\/span>. Actually, with more technological devices, the most commonly used is 200\/200<\/span> (softening point\/pellet).<\/p>\n

Cementing features<\/h3>\n