geophysical Survey
Estimated on the basis of geological evidence seen at the surface soil may not be exact location of the mines. Often petroleum mines are very deep, it is more conform to adopt another method.
This geophysical survey illustrate grabhiti, magnetic and sesmika survey method are more effective. Geophysical survey, high technology, skilled and experienced manpower and requires a large budget and if the field survey and data processing takes a long time for.
Drilling basis, or not, and what to change employer to confirm that the drilling is. At the same time it would take for geophysical survey is difficult to estimate.
Geochemical (biogeochemical) Survey
Geophysics sarbhesamgai biogeochemical survey is also important. This underground water, hydro-carbon and is judged by how much gas volume. Usually petroleum mines near the ocean hydro carbon and the gas volume of water than the other place is.
Only after checking the place where a lot of water and hydro-carbon gas is increasing the amount that can be detected. All kinds of straw appears that the possibility of lumping of the petroleum, mining drilling is sure to be possible places.
2. installation access
Geological mapping, geophysical and biogeochemical Survey mines likely to prove petroleum drilling and other development work after drilling for advance access to the place where the installation is necessary.
For this purpose, land acquisition, pahumcamarga construction, electrical work, etc. It is important to expand the line. In addition, many budget and requires time. Nepal is also at least 1 year of experience in this work done faster if it will take.
3. Drilling
Petroleum drilling and mining potential prathamapataka new place is to make sure that is done. It is considered the most risky investment.
Vaildakyata drilling success rate is 10 to 25 percent of the total. This means that 1 to 2.5 10 Drilling Petroleum found only likely to draw. Modern technology, highly experienced and skilled manpower, the study used the place of drilling success rate is 50 percent of the total.
If we look at the current international experience gahiraianusara drilling a well and $ 1 million to 50 million to 10 million dollars may seem. By this it could be estimated, it is how risky and expensive.
4. Development and Production
When drilling for petroleum products if a draw and it was found that how much and what quality crude petroleum that is wearing the actual facts.
From here on the basis of its oil out economically beneficial and sustainable only when it is certified that the production process SELF. Before starting production of oil deep
Development must.
First draw metal or concrete casing to put that on the one hand, on the other underground water well does the passing of the oil sands protects machines.
Caching has been cooled, the oil level below the rock part of the blast or other method to phutaincha, so that the oil can be easily gathered opinions troughs. Only after the oil surface of the soil begins to drag the process.
If the oil pressure is stored in the place highly owing 15 percent of their oil comes from oil sands jaminasamma himself. The rest of the oil pump is keen to bring a tannuparne. Special kinds of pumps for the oil drag, so the depth of need.
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