And the evolution of the stages involved in the oil and gas

 
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and natural gas fields, drilling of exploratory wells, and subsequently drilling and operating 
the wells that recover and bring the crude oil and raw natural gas to the surface. 
People did not start drilling for buried petroleum until the middle of the 19th Century. 
However its presence had been known for quite a long time. In the mid-nineteenth century, a 
lack of whale oil matched with the development of procedures for refining "rock oil" into lamp 
oil. Demand for oil and gas has occasionally surged and slumped, as have prices and 
exploration activity. Regardless of the market for petroleum, however, both the exploration 
and production of oil are expensive endeavors. Even with the most sophisticated technology, 
finding hidden petroleum deposits involves creative interpretation of the land. 
 
 
 
 
 
 
 
 
 
 
 
 
 

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1.1 PURPOSE STATEMENT 
Tend to explain What Oil and Gas Exploration and Production involve and, how the stages 
run. An explanation of the overview of the stages and the evolution of procedures and 
technology involved have evolved, are detailed in this work. 
 

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2.0 Exploration 
The only way to prove what lies in buried rocks is to drill a well.
Even with current geology 
and geophysical procedures, drilling stays hazardous. An exploratory or "wildcat" well in a 
region that has not been drilled before faces high chances against success: approximately one 
of seven to 10 exploratory wells finds commercial accumulations of oil or gas. To be 
commercially feasible, a well must be able to produce enough oil or gas to reach the costs of 
drilling and placing it on production. In wildcat areas the first exploratory wells are often 
drilled as tests. Produce valuable information about the nature of the rocks, and their oil and 
gas potential through the analysis of core samples, rock cuttings and data gathered from 
surveys. 
A financial analysis is a determining factor in the classification of a well into: 
1- Oil Well 
2- Natural Gas Well 
3- Dry Hole 
In the event that the well can sufficiently deliver oil or gas to take care of the expense of 
consummation and generation, it will be put to production, If not classified as dry hole even if 
oil or gas is found. 
If exploratory wells establish the presence of producible quantities of oil or gas, 
"development" wells are drilled to define the size and extent of the field. In development 
drilling the odds for success are higher: about six or seven successful wells for every 10 
drilled. But the element of risk is still present. There may not be enough oil or gas to make the 
site commercially feasible or the technology required to produce oil or gas may be too 
expensive. 

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