Natural Gas

Definition(s)


Natural gas

Typical composition is (approximate percentages) 80% methane, 7% Ethane, 6% Propane, 2.5% Butane, 1.5% Isobutane, and 3% Pentane. Used in UB Drilling where it is available from local pipelines or other sources at reasonable cost. Has advantage of eliminating downhole corrosion and combustion problems, but surface handling presents safety issues during connections and tripping.

Source: IADC UBO / MPD Glossary, December 2011. Global Standards

Natural gas

“Natural gas” means all kinds of gaseous hydrocarbons, whether wet or dry, produced from oil or gas wells; and also includes the residue gas remaining after the extraction of liquid hydrocarbons or by-products from wet gas.

Source: Law of Information Energy, Petroleum Act B.E. 2514 (1971), Thailand, as of June 2013. Legislation

Natural gas

A highly compressible, highly expandable mixture of hydrocarbons which occurs naturally in a gaseous form and passes a meter in vapor phase.

Source: Oil and Gas and Sulphur Operations in the Outer Continental Shelf, 30 CFR 250 (2013). Regulations

 

Natural gas

A highly compressible, highly expandable mixture of hydrocarbons which occurs naturally in a gaseous form and passes a meter in vapor phase.

Source: The Oil Industry (Development) Act, 1974, Act No. 47 of 1974, India, as amended as of May 2013. Legislation

 

Natural Gas

“Natural gas” means gas obtained from bore-holes and consisting primarily of hydrocarbons.

Source: The Petroleum and Natural Gas Rules, 1959 (As amended from time to time), India, as amended as of May 2013. Regulations

 

Natural Gas

“Natural gas” means gas obtained from bore- holes and consisting primarily of hydrocarbons and includes-

  1. gas in liquid state, namely, liquefied natural gas and regasified liquefied natural gas,
  2. compressed natural gas,
  3. gas imported through transnational pipe lines, including CNG or liquefied natural gas,
  4. gas recovered from gas hydrates as natural gas, (v) methane obtained from coal seams, namely, coal bed methane, but does not include helium occurring in association with such hydrocarbons.

Source: The Petroleum and Natural Gas Rules, 1959 (As amended from time to time), India, as amended as of May 2013. Regulations