There have been significant changes in technology in the production of oil since its first production as you will read more here. Considering the value of oil to our lives, it is suitable to review the changes that have followed its discovery. The ancient people in Mesopotamia used a hardened substance called bitumen to construct sailing vessels and put jewelry pieces together. The pharaohs in Egypt used the substance to make the pyramids stand tall. Bitumen, asphalt and motor led to increased curiosity about oil among people.
From this site, you find out that oil was first extracted by digging. At the time, oil was used as medicine and the Chinese also lit their lamps as well as warm their houses using this product. Little information about oil existence was available at the time as you have seen in this site.
The next discovery to be made as you will find here, was the spring pole. The device as you discover more here, was attached to a tree which provided the required resistance to reach greater depth, was used by the Ruffner brothers to enhance salt extraction. Oil was still not the primary goal but the people believed it could serve several purposes. However when steam power was introduced, the brothers were able to drill salt at a faster rate. A chemist at Yale by the name Benjamin Silliman discovered more about distillation of oil into Kerosene that could be used in lamps to provide lighting and even cook. It is at this point that the society became interested in the commodity and commercial drilling began.
As you learn more about how the demand for oil surged in this website. The number of oil deposits discovered in the earth increased. However there were hard sediments that made drilling difficult hence the need for improved equipment. As a result, a technique called rotary drilling was developed whose head penetrated the hard rock without the need to remove debris regularly. One event that marked how effectiveness of the rotary drill in the process of oil extraction was observed in Texas when a rig struck a rock resulting into a lot of oil flowing to the surface. Because the world was getting ready for the first war, the need for oil skyrocketed leading to the development of better oil tools as a result of competition. The most successful development for the rotary drill was the ability to dig deeper.
At the moment as we learn more here, rotary rigs are still in use for extracting oil. Besides been in use, the equipment has had significant changes technologically to improve efficiency. From what you have read in this website, you can see that the rigs can do more work than they did in the past. One such case is the increased mobility of the rig to extract oil from several oil wells.