Understanding Slant and Horizontal Directional Drilling 01Jun Posted By: admin0 Comment(s)
Drilling can be done in various ways instead of the same old traditional type. It can be done either by slanting or the horizontal directional method.
Vertical drilling was the primary method for gaining access to underground resources. As years pass, new devices in the method of drilling have changed the whole drilling process. Drilling for oil, water, and resources is easier and efficient with the below methods. Let us have a detailed look at them.
Different Types of Drilling
Slanted Drilling is where the drill angle is slightly slanted. Slanted drilling has a variable angle of 30 to 45 degrees. The modern drilling techniques have made it possible to use steel pipes for drilling, which is more flexible to change its direction wherever possible based on the requirements. This is best suited for non-vertical wells.
In this process, the well is drilled in the shape of letter “J.” To a certain distance, the drilling is turned horizontally deep and then in the vertical direction. Since it does not need to be in a constricted shape or direction, there is more chance of accessing the surrounding resources such as gas and oil.
Horizontal drilling is considered to be more advantageous as the coverage is high.
Horizontal Vs. Slanted Directional Drilling
Slanted dripping aims at touching the end of the well whereas horizontal drilling tries to get through some space to have a wider exposure. More than the difference in angles between the horizontal and vertical drilling, there are many other differences to look upon.
It is easier with horizontal drilling to turn the angle with a just couple of meters whereas vertical drilling needs to reach up to 2000 meters before attempting to turn the angle. Also, horizontal drilling is more costly than vertical drilling, however horizontal drilling more efficient and productive.
Since horizontal drilling is found to be more beneficial, it is preferred by most companies over the slanted drilling method.