Petroleum Industry and Petroleum Geology

Recovery Techniques

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In primary recovery stage, reservoir drive comes from a number of natural mechanisms. These include: natural water displacing oil downward into the well, expansion of the natural gas at the top of the reservoir, expansion of gas initially dissolved in the crude oil typically, Secondary recovery techniques increase the reservoir's pressure by water injection. Enhanced, or Tertiary oil recovery methods increase the mobility of the oil in order to increase extraction. Fracking is the process of drilling down into the earth before a high-pressure water mixture is directed at the rock to release the gas inside. Fracking is a slang term for hydraulic fracturing. Fracking refers to the procedure of creating fractures in rocks and rock formations by injecting fluid into cracks to force them further open. The larger fissures allow more oil and gas to flow out of the formation and into the wellbore, from where it can be extracted.