Crude oil and natural gas are naturally occurring substances that are found in rock in the Earth’s crust. These organic raw materials are created by the compression of the remains of plants and animals in sedimentary rock such as sandstone, limestone, and shale.
The sedimentary rock itself is a product of deposits in ancient oceans and other bodies of water. As layers of sediment were deposited on the ocean floor, the decaying remains of plants and animals were integrated into the forming rock. The organic material eventually transforms into oil and gas after being exposed to specific temperatures and pressure ranges deep within the Earth’s crust.
Oil and gas are less dense than water, so they migrate through porous sedimentary source rock toward the Earth’s surface. When the hydrocarbons are trapped beneath less-porous cap rock, an oil and gas reservoir is formed. These reservoirs of oil and gas represent our sources for crude oil and gas.
Hydrocarbons are brought to the surface by drilling through the cap rock and into the reservoir. Once the drill bit reaches the reservoir, a productive oil or gas well can be constructed and the hydrocarbons can be pumped to the surface. When the drilling activity does not find commercially viable quantities of hydrocarbons, the well is classified as a dry hole, which is typically plugged and abandoned.
Some of the major domains where we have handled projects in the past includes –