UBD is a procedure used to drill oil and gas wells where the pressure in the wellbore is kept lower than the static pressure of the formation being drilled. As the well is being drilled, formation fluid flows into the wellbore and up to the surface. This is the opposite of the usual situation, where […]

Overpulls/ Stuck Pipe In Surface Hole If any tight hole is experienced when drilling with water the followint actions should be taken to prevent stuck pipe: When heavy overpulls are experienced, and the above precautions have been taken, but the weight indicator regularly indicate a drop-off in overpulls and then an increase again, do not […]

Exploring Well Drilling Methods: Choosing the Right Approach for Your Project. Well drilling is a fundamental process in accessing underground resources like water, oil, and natural gas. The choice of drilling method depends on factors such as depth, geology, and the type of resource being extracted. Here’s a breakdown of the most common well drilling […]

Classic beam pump system showing:Surface pumping unit.Polished rod, sucker rods, and barrel inside well.Uses reciprocating motion to lift oil from formation.Inset shows rotary drilling rig with components like blowout preventer, casing, and mud circulation.

It is a complex operation and the drilling industry engages the services of personnel and a complicated array of machinery and materials to drill an oil/gas well to depths greater than 6000 meters, The drilling industry has seen technological progress, however, these advances have not changed the fact that, besides the use of complicated machinery, […]

When drilling a well and keeping the wellbore fluid gradient below that of the natural formation gradient, this is called Underbalanced Drilling (UBD) and it has its differences with traditional methods. Namely, the well can flow throughout the drilling because the bottomhole circulating pressure always remains lower than the formation pressure. As well as penetrating […]

Crude oil is a mixture of comparatively volatile liquid hydrocarbons (compounds composed mainly of hydrogen and carbon), though it also contains some nitrogen, sulfur, and oxygen. Those elements form a large variety of complex molecular structures, some of which cannot be readily identified. Regardless of variations, however, almost all crude oil ranges from 82 to […]

Oil well drilling involves a complex system of equipment and processes designed to penetrate underground formations, extract hydrocarbons, and ensure safe operations. Understanding the key components of a drilling rig is essential for efficient well construction. Key Insights from the Document: Drilling Rig Components – Includes the crown block, traveling block, top drive, and drill […]

A drilling rig derrick hand is responsible for assisting the driller and mud engineer with operations on an oil rig. In this job, you guide the pipe as your team connects it to the drill hole, mix the drilling fluid, or “mud,” and repair and perform maintenance on the rig and associated equipment like the […]

An opening in the rig floor near the rotary table, but between the rotary table and the vee-door, that enables rapid connections while drilling. The mousehole is usually fitted underneath with a length of casing, usually with a bottom. A joint of drillpipe that will be used next in the drilling operation is placed in […]