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| Drilling Mud / Fluid |
Mixture of base substance and additives used to lubricate drill bit and to counter act natural pressure in formation. Drilling mud provides circulation, flushing rock cuttings from bottom of well bore to surface. |
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| Drilling Mud Nomenclature |
Oil Based Mud (OBM)
Pseudo Oil Based Mud (POBM)
Water Based Mud (WBM). |
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| Dry gas |
Or Lean gas is natural gas composed mainly of methane. |
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| Esters |
Compounds formed by combination of acids and alcohols. |
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| Ethanol |
Chemical formed by fermentation or synthesis. |
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| Ethene |
Or Ethylene simplest member of class of aliphatic organic compounds called alkenes, which contain at least one carbon-carbon double bond. Ethylene is a colorless, slightly sweet-smelling gas of formula H2C=CH2. It is slightly soluble in water and is produced in commercial amounts by cracking and fractional distillation of petroleum and from natural gas. |
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| Gasoline |
Mixture of lighter liquid hydrocarbons used chiefly as a fuel for internal-combustion engines. Produced by fractional distillation of petroleum; by condensation or adsorption from natural gas; by thermal or catalytic decomposition of petroleum or its fractions; by hydrogenation of producer gas or coal; or by polymerization of hydrocarbons of lower molecular weight. |
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| Greenhouse Gases |
Gases that alter thermal properties of atmosphere (for example, water vapour, carbon dioxide, methane, nitrous oxide, CFCs, halons and ozone). |
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