What is Petroleum Well or Oil Well ?

An oil well is a perforated tree through a portion of the eartha crust in order to recover crude petroleum products. From the concept of good to its abandonment, it undergoes several stages of development. Oil wells can be run in a variety of positions and not all produce the same product. They will always produce at least a small amount of natural gas, which may or may not be caught for sale.

The first registered oil well was built in 347 CE in China and technology had spread to Japan since the seventh century. These simple drilling constructions, made of bamboo, have been replaced as technology and processes have been refined. The modern age has brought perforated petroleum wells with a rigid cable and then rotary drills. Modern drilling techniques allow nearly horizontal drilling, providing access to hydrocarbon reserves that are deep in the subsoil.

Perforation starts once a suitable site has been selected and all plans have been finalized. A hole between 5 and 50 inches (12.7-91.4 cm) was exerted. This section is the wider segment of the hole, as each subsequent perforated segment will be slightly smaller so as to reduce the pressure originating from the bottom. After each section is perforated, a casing made of steel is placed inside the hole and cemented in place. There are usually no more than five successive segments practiced in any hole.

The oil well must be completed, ie it must be adapted for oil production and harvesting. Often the pressure accumulated within the reserve is sufficient to force the oil on its own strong, but if the pressure level is insufficient, a pump is installed in place. The oil is then harvested by a series of valves known as production trees set top installation. These keep track of the oil pressure inside the well and adjust accordingly. Eventually, the installation will be abandoned when it is no longer profitable to operate.

A petroleum well can produce mainly petroleum or gas and can produce both. Small amounts of natural gas, which is a byproduct of the oil creation itself, are present in every oil well. Some wells produce almost entirely gas.

Oil wells can be placed either onshore or offshore. The function of the good is the same regardless of the position, but due to the difficulty of drilling and maintaining a well in the sea, offshore wells are much more expensive. These wells are punched only when the presence of a large amount of oil has been proven. They also require more planning and have more security requirements.