دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

without crystal form.

Kerogen that lacks distinct form or shape under microscopic exam. May describe oil prone Kerogen.

n: very fine particles of almost pure amorphous carbon, usually produced from gaseous or liquid hydrocarbons by thermal decomposition or by controlled combustion with a restricted air supply. It is used in the manufacture of carbon paper, tires, cosmetics, and so on.

n: rock texture in which individual rock, mineral, or organic fragments are cemented together by an amorphous or crystalline minera1 such as calcite. Compare crystalline texture.

n: The component of a tree that is extracted in the paper-manufacturing process and used as an additive in drilling fluids. Specifically, lignin is a highly polymerized, amorphous material that makes up the middle lamella of woody fibers and cements the fibe

n: a saturated aliphatic hydrocarbon having the formula CnH2n+2 (e.g., methane, CH4;ethane, C2H6). Heavier paraffin hydrocarbons (i.e., C18H38) form a wax-like substance that is called paraffin. These heavier paraffins often accumulate on the walls of tubing and other production equipment, restricting or stopping the flow of the desirable lighter paraffins.

normal or straight carbon chain alkanes with carbon chain lengths of C18+. The alkanes in this range solidify at temperatures from 80oF to over 200oF. Paraffin is amorphous but may appear to have structure in slow growth examples.

n: a semisolid or solid complex, amorphous mixture of organic compounds having no definite melting point or tendency to crystallize. Resins may be a component of compounded materials that can be added to drilling fluids to impart special properties to the fluid.

n: a mineral that has the chemical formula SiO2 (silicon dioxide). It is relatively hard and insoluble. Quartz is a form of silica, but usually contains impurities that give it color.

n: A chemically resistant dioxide of silicon that occurs in crystalline (quartz),amorphous (opal) and cryptocrystalline (chert) forms.

n: (S) a pale yellow, nonmetallic chemical element. In its elemental state- free sulfur-it has a crystalline or amorphous form. In many gas streams, sulfur may be found as volatile sulfur compounds- hydrogen sulfide, sulfur oxides, mercaptans, carbonyl sulfide. Reduction of their concentration levels is necessary for corrosion control and, in many cases, necessary for health and safety reasons.