The Rotary drilling technique makes use of a rotational drill bit that is sharpened at the tip to bore into the earth crust. This method is one of the most efficient methods of drilling used in the mining, oil and even the construction industry. This method of drilling stands out from the rest due to its ability to cut through hard and difficult formations.
The rotary drill system is made up of a hoisting equipment, prime mover, circulation equipment and a strong rotating equipment used in the drilling of a hole or a well – as stated by: http://adpgroupltd.com/drilling-services/multi-purpose-rotary-drilling-rigs.
Brief History of the Rotary Drilling Technique
The rotary drilling technique was first developed in ancient Egypt. The concept evolved with time and was modified by the various periods of development. In early 1500, Leonardo da Vinci designed the rotary drill which is similar to the format used in the design of rotary machines today. The rotary drill system, however, did not become popular until early 1900.
The very first modern rotary machine that is common today was invented by the English Engineer Robert Beart, in 1845. This design consists of a drilling device to be attached to a moving animal that is forced to move in circles. This movement provides the rotation required for the drilling.
The Standard Rotary System
The standard rotary system is made up of a complex combination of a hoisting equipment, a circulating equipment, a rotating equipment, and a standard prime mover. The first standard rotary system was driven by steam engines. From here they were powered by gas than currently by diesel engines.
With the rate of technological advancements in the world today, the rotary drilling components are steadily evolving. What we have today is a comprehensive drill system that makes use of a sharp drill bit driven into the target ground using the necessary equipment to achieve rotational movement.
Currently, the diesel engine is the primary source of power for rotary rigs. The gas engines which makes use of Natural gas is also used as a source of power. For some drilling systems, the reciprocating turbines are used to produce the required energy need on the location of drilling. The energy moves through the prime movers into the circulating equipment, the hoisting and the rotary itself. Larger rigs make use of power for lighting, compression and water needs too.
The hoisting equipment in the rotary system functions as a lift that moves the rotary tool in and out of the drill well or hole. It is made of a derrick fitted on top of a strong rectangular mass that is forged with steel. The rotary also has a steel floor for easy movement. This floor is called the “substructure.”
The hoisting equipment is also responsible for providing support to the pulleys or cables used in raising or lowering the tool. It acts as a stabilizer to the entire drill system.