Directional drilling is a form of drilling using a directed pattern to reach a specific location. It is usually used for the purpose of discovering oil and gas deposits underground, view surprise directional drilling. The technique uses two holes, called the drill heads, into the targeted area. These holes are then simultaneously fed into the horizontal drill system.
This type of drilling is generally done for exploration and sometimes for the purpose of producing petroleum products. In order to gain profit from directional drilling, there are a few notable papers that have been published in recent years. These renowned studies have helped the oil and gas industry better understand directional wells. Some of these papers have been incorporated into classes pertaining to geology, which many students sign up for in order to better understand and learn the details of directional drilling.
One of the most notable papers on the subject was written by David Wright and Mark Raup. These two professors at Tulane University produced a research paper entitled " fracture zones of earth's continental margin." The study examined the formation of faults and fractures in the Colorado shale layer. They determined that the formation of these faults and fractures occurs due to the impact of large meteoritic impacts. Changes in temperature, pressure and other factors lead to the generation of new faults and fractures.
Another paper that has been published on the subject was co-authored by Paul G Johnson and Brian Keil. This study looked at the effects that reservoir development has on underground storage. reservoir development is basically the building of huge amounts of reservoir around the earth's surface, in order to provide an abundant supply of liquid resources to meet our energy needs. When this reservoir base is filled with a large amount of water, there is the possibility that there will be a significant change in the concentration and quality of the natural gases trapped within.
Drilling wells in response to the rising natural gas supply can actually reduce the size of the reservoir. This means that less natural gas will be stored underground and consequently, less pressure will be exerted upon the reservoir walls. The study concluded that the directional drilling will not have any significant environmental impact on the underground storage of natural gas.
With regards to the natural gas production, the study found that drilling wells at a horizontal angle of about 45 degrees will result in the least amount of air and hydrostatic pressure being applied. If horizontal wells are drilled at a greater angle than this, air and hydrostatic pressure is likely to be significantly increased. When this happens, the gas will likely be trapped close to the surface. To address this, researchers suggest that the angle of the drill bit should be kept at a greater degree so as to avoid trapping air beneath the ground. This will help in preventing air bubbles from accumulating and creating a pressure problem. Read more at https://en.wikipedia.org/wiki/Directional_drilling