What is the difference between horizontal and directional drilling?

A more complex way of directional drilling utilizes a bend near the bit, as well as a downhole steerable mud motor. Horizontal drilling is any wellbore that exceeds 80 degrees, and it can even include more than a 90-degree angle (drilling upward).

What is HDD in trenching?

Horizontal Directional Drilling (HDD) is a construction technique whereby a tunnel is drilled under a waterway or other designated area, and a pipeline or other utility is pulled through the drilled underground tunnel.

What is horizontal directional drilling HDD and where it is used?

Horizontal Directional Drilling (HDD) is a method of installing underground pipelines, cables and service conduit through trenchless methods. It involves the use of a directional drilling machine, and associated attachments, to accurately drill along the chosen bore path and back ream the required pipe.

What are the advantages of using horizontal drilling compared to vertical drilling?

“Horizontal wells are better producers and are the best in terms of environmental conservation rather than vertical which is cheap,” Tumushabe told East African Business Week at the Total ESP oil field. He said with horizontal drilling, you access many oil pockets within the ground from the same point.

What is directional drilling used for?

Directional drilling is the practice of accessing an underground oil or gas reserve by drilling in a non-vertical direction. Directional drilling is also called directional boring. Directional drilling increases the efficiency of oil and gas extraction, and can also lessen the environmental impact of drilling.

What is the purpose of directional drilling?

What is the difference between horizontal and vertical drilling?

Like the name, horizontal wells are drilled from the side. Vertical wells drill downward, but horizontal well is drilled off of a vertical borehole. Specifically, a well is horizontal if it’s dug at an angle of at least eighty degrees to a vertical wellbore.

What is the benefit of horizontal drilling?

The advantages of using horizontal drilling include: Durability, as the pipes are very strong. Quicker installation with less disruption to landscaping. Lower installation cost with a smaller crew.

Why is horizontal drilling bad?

Horizontal drilling in the Marcellus shale involves large volume hydraulic fracturing, which poses a number of risks to aquatic species and habitats. This type of hydraulic fracturing requires about five million gallons of water per well, with 1-3 wells per pad.