Abstract
Although, most of the oil and gas industry is made up of conventional and unconventional drilling, the drilling techniques are not fundamentally different. The main difference is the degree of difficulty encountered during the drilling process. It also turns out that unconventional drilling relies heavily on unbalanced drilling or some form of drilling mud management. In that sense, unconventional drilling requires better programming and the use of more sophisticated tools. As a result, most of the innovative techniques are applied to unconventional drilling. It is also true that these techniques are quickly adopted by the conventional drilling industry. Although unconventional drilling techniques are more expensive, they have high rate of return, particularly when followed up with proper reservoir management. Most of the time companies begin drilling conventional oil only, but then begin unconventional drilling later on. Although it can be very expensive to develop, unconventional oil plays have the opportunity to be repeated many times. The process is amenable to phased development, thus increasing the effectiveness of long-term reservoir management and profitability.
Published Version
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