Gas condensate is a mixture of liquid hydrocarbons condensing from natural gases .
Content
General information
Gas condensate is a colorless or slightly colored liquid. Under natural conditions (in deposits), as a rule, it is in a gaseous state. It is condensed from natural (formation) gases with increasing pressure (above the pressure at the beginning of condensation ) and / or lowering the temperature ( dew point for hydrocarbons ). It consists of gasoline (boiling range from 30-80 to 200 ° C), kerosene (200-300 ° C) and, to a lesser extent, higher boiling components. For most gas condensates, the yield of gasoline fractions is 70-85%. [one]
Depending on the presence / absence of gases in the product, an unstable gas condensate ( crude gas condensate ), which contains dissolved gases, and a stable gas condensate obtained by degassing an unstable gas (mainly by rectification ) are distinguished.
In turn, stable condensate , depending on the place of production, is divided into field condensate ( lease condensate - English), obtained directly from the field, near the well, and factory condensate ( plant condensate - English), produced at gas processing plants. [2]
Source
The source of gas condensate is hydrocarbon deposits .
The main volume is obtained from gas condensate and gas condensate-oil fields (deposits). Less from associated petroleum gas in the process of field oil treatment (during its separation). [1] A certain (usually insignificant) amount of gas condensate can also be present in pure gas deposits . [3]
The content of liquid components in one cubic meter of gas for various fields ranges from 10 to 700 cm³ [4] .
With a decrease in pressure, as gas is consumed, gas condensate is released in the geological formation and disappears for the consumer. Therefore, when exploiting fields with a high content of gas condensate, C 3 and higher hydrocarbons are released from the gas produced on the earth’s surface, and the C 1 –C 2 fraction is pumped back to maintain pressure in the formation.
Resources and Stocks
At the beginning of 2013, prospective resources (C3) and explored recoverable reserves (A + B + C1) of gas condensate were estimated at 2 billion tons in Russia. [five]
Accumulation when using gas engines
Gas condensate can accumulate in automotive gas equipment. The liquid is brownish-brown in color, has an unpleasant corrosive smell of benzene resins (depending on the composition of the gas combustible mixture), can have a range of odors from harsh acetone to the smell of tobacco smoke (this depends on the composition of the additives that are added to the smell of gas). It is recommended to drain regularly from the gas reducer. It is advisable not to touch it with your hands, as it can be hazardous to health.
Application
Stable gas condensate is used exclusively as a raw material for processing into the following products: gasoline , naphtha , kerosene , oils, as well as for the production of aromatic hydrocarbons: benzene , toluene , xylene . [one]
See also
- Liquefied Natural Gas , Liquefied Petroleum Gases
- Gasoline
- Gas condensate reservoir
- condensate
Notes
- ↑ 1 2 3 Answers to questions from a representative of the Sea News | Mining University (Inaccessible link) . www.spmi.ru. Date of treatment December 9, 2016. Archived December 20, 2016.
- ↑ Fifty shades of condensates . www.ogfj.com. Date of treatment December 9, 2016.
- ↑ LAPSHIN VLADIMIR ILYICH, VOLKOV ANDREY NIKOLAEVICH, KULKOV ANATOLY NIKOLAEVICH, KONSTANTINOV ALEXANDER ANDREYEVICH. On the classification of formation fluids of oil and gas condensate deposits // Vesti gazovoy nauki. - 2014-01-01. - Vol. 2 . - ISSN 2306-8949 .
- ↑ Chemical Catalog - Gas Condensates // Chemical Encyclopedia. ch. ed. I.L. Knunyants
- ↑ CONDITION AND USE OF THE MINERAL - RAW MATERIAL RESOURCES OF THE RUSSIAN FEDERATION: OIL AND CONDENSATE // Information and Analytical Center "MINERAL"
Links
- GEOCHEMICAL CLASSIFICATION OF GAS CONDENSATES // Geology, geography and global energy. 2013. No 2 (49)