18 July 2017
The final string of casing set and cemented in the hole to prevent caving of the hole, the flow of fluid into the hole from other […]
18 July 2017
A formation or horizon of a well from which oil may be produced. The oil zone is usually immediately under the gas zone and on top […]
18 July 2017
The surface area overlying an oil reservoir or reservoirs. The term usually includes not only the surface area, but also the reservoir, the wells, and the […]
18 July 2017
1) of a wellbore, having no casing. 2) of a hole, having no drill pipe or tubing suspended in it.