Whois & Analysis for enlink.com

A value chain is a set of activities that a firm operating in a specific industry performs in order to deliver a valuable product or service for the market.

The concept comes through business management and was first described by Michael Porter in his 1985 best-seller, Competitive Advantage: Creating and Sustaining Superior Performance.

The oil and gas industry is usually divided into three major components: upstream, midstream and downstream.

The midstream sector involves the transportation (by pipeline, rail, barge, oil tanker or truck), storage, and wholesale marketing of crude or refined petroleum products.

Pipelines and other transport systems can be used to move crude oil from production sites to refineries and deliver the various refined products to downstream distributors.

Natural gas pipeline networks aggregate gas from natural gas purification plants and deliver it to downstream customers, such as local utilities.

In financial accounting, an asset is an economic resource.

Anything tangible or intangible that can be owned or controlled to produce value and that is held to have positive economic value is considered an asset.

Simply stated, assets represent value of ownership that can be converted into cash (although cash itself is also considered an asset).

In microeconomics, supply and demand is an economic model of price determination in a market.

It postulates that in a competitive market, the unit price for a particular good, or other traded item such as labor or liquid financial assets, will vary until it settles at a point where the quantity demanded (at the current price) will equal the quantity supplied (at the current price), resulting in an economic equilibrium for price and quantity transacted.

A core sample is a cylindrical section of (usually) a naturally occurring substance.

Most core samples are obtained by drilling with special drills into the substance, for example sediment or rock, with a hollow steel tube called a core drill.

The hole made for the core sample is called the "core bowling".

A variety of core samplers exist to sample different media under different conditions.

More continue to be invented on a regular basis.

In the coring process, the sample is pushed more or less intact into the tube.

Removed from the tube in the laboratory, it is inspected and analyzed by different techniques and equipment depending on the type of data desired.