Gilsonite is a Unique Natural Resin ABSTRACT GILSONITE has been used successfully for many years in sealant and adhesive products. These applications were restricted to products that could utilize the inherent variability of GILSONITE. Now with new production technology and quality control, this unique natural resin can be considered as a substitute for synthetic resins at […]
For many years, Gilsonite had been recognized by the industry as a solution to shale sloughing, hole enlargement, and borehole instability. In the early 1980s, at the request of American Gilsonite Company, owned by Chevron Corporation, the Chevron Drilling Fluids at the Drilling Technology Center, investigated how Gilsonite works under downhole conditions. A review of […]
Bore-Plate Shale Stabilizer was developed by American Gilsonite Company with three main objectives in mind. These are: excellent shale stability, excellent reaction in a water environment (drilling fluid), and easy dispersability. These objectives were achieved and tested under the guidance of Chevron’s Drilling Technology Center using the O-G-S Downhole Simulation Cell (DSC) in Houston, Texas. First, […]
Mud-Filtrate Invasion in Coring: Mud-filtrate invasion during coring operations has been a major factor affecting the validity of in-situ saturations in reservoir rock. Laboratory studies have documented the possible effects of the drilling mud filtrate invasion on the rock wettability. Considerable effort has been devoted to the measurements of relative permeability by the laboratories of […]
Bore-Plate toxicity SUMMARY Test Substance : Bore- PlateTest Species : Brown shrimp (Crangon crangon)Test Type : Acute toxicity. 96 h LC 50Test Conditions : Semi-static test conditions according to guidelines issued by the Ministry of Agriculture, Fisheries and Food, Burnham-on-Crouch, U. K. Results Test substance : Bore- Plate 96h LC50 95% confidence limits (mg/l) (mg/l) […]
Gilsonite as a Borehole Stabilizer: Evaluate Its Effectiveness and Benefits by N. Davis II and C.E. Tooman, Chevron Services Co. SPE Members Copyright 1988, IADC/SPE Drilling Conference This paper was prepared for presentation at the 1988 IADC/SPE Drilling Conference held in Dallas, Texas, February 28-March 2, 1988 This paper was selected for presentation by an […]
Sloughing Shales Sloughing shales solution or heaving shales were encountered in ATDM Gilsonite Co. operations in the Hackberry Field, La. during the late 1960’s. . Numerous fishing jobs because of sloughing shales plagued drilling operations, and the costs of reaming tight holes and weighting up the drilling fluids raised drilling costs substantially. One of the most […]
Gilsonite help Torque and Drag Reduction Lubrication Tests performed in the O-G-S Downhole Simulation Cell (DSC) using cores of various age and hardness in a Bore-Plate®- treated mud system indicate that Bore-Plate(a patented blend of specially-treated Gilsonite grades and other additives) can reduce the effects of drilling fluid filtrate invasion. In water based mud systems, filtrate […]
Gilsonite support to prevent lost circulation What is lost circulation? In the drilling of oil Wells, gas Wells, and the like, the process of pumping a drilling fluid through the well hole to and from the bottom is referred to as circulation. The maintenance of circulation of the drilling fluid is essential to successful drilling by the rotary […]
Gilsonite Resin is composed of a wide variety of different types of hydrocarbon molecules. They may be characterized into two major categories, aliphatics and aromatics. Gilsonite contains approximately 45% to 50% of each. Aliphatics are those hydrocarbons which have the carbon atoms bonded to each other in single bonds. Usually, aliphatics are drawn with the […]