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Author Topic: The Basics of Natural Gas - Part 2  (Read 1016 times)

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The Basics of Natural Gas - Part 2
« on: May 11, 2013, 12:41:08 PM »
Natural Gas sources

The search for Natural Gas begins with geologists (people who study the structure of the earth) locating the types of rock that are usually found near Gas and Oil deposits.

Today their tools include seismic surveys that are used to find the right places to drill wells.  Seismic surveys use echoes from a vibration source at the earth's surface (usually a vibrating pad under a truck built for this purpose) to collect information about the rocks beneath.  Sometimes it is necessary to use small amounts of dynamite to provide the vibration that is needed.

Scientists and engineers explore a chosen area by studying rock samples from the earth and taking measurements.  If the site seems promising, drilling begins.  Some of these areas are on land but many are offshore, deep in the ocean.  Once the gas is found, it flows up through the Well to the surface of the ground and into large pipelines. 

Some of the gases that are produced along with Methane, such as Butane and Propane (also known as 'by-products'), are separated and cleaned at a gas processing plant.  The by-products, once removed, are used in a number of ways.  For example, propane can be used for cooking on gas grills.

Because natural gas is colorless, odorless and tasteless, mercaptan (a chemical that has a sulfur like odor) is added before distribution, to give it a distinct unpleasant odor (smells like rotten eggs).  This serves as a safety device by allowing it to be detected in the atmosphere, in cases where leaks occur.

We can also use machines called "digesters" that turn today's organic material (plants, animal wastes, etc.) into natural gas.  This replaces waiting for thousands of years for the gas to form naturally.

See  previous post in this series for definition of terms.
Next topic in the series - Natural Gas Storage
« Last Edit: May 11, 2013, 01:01:33 PM by Adewale Odubiyi »

Adewale Odubiyi
Owner, Nigeria Oil & Gas Forum

Nigeria Oil & Gas Forum

The Basics of Natural Gas - Part 2
« on: May 11, 2013, 12:41:08 PM »


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