What is a multilateral well?
A multilateral well is a well with two or more laterals (horizontal, vertical, or deviated) drilled from a main mother well. This allows one well to produce from several reservoirs. Multilateral wells are suitable for complex geology where drilling more new wells to penetrate to those reservoirs is not economical.
Why multilateral wells are better than typical horizontal wells?
Multilateral technology is very attractive for heavy oil applications. The incremental production over single horizontal wells is in general greater than 70%. This advantage is because multilaterals provide greater reservoir contact in low-productivity reservoirs.
What is vertical well?
A vertical well is a technique for accessing an underground reserve of oil or natural gas that involves drilling vertically into the ground. Drilling wells vertically is a traditional method of oil extraction, as compared to their more modern counterpart, directional drilling.
What is multilateral completion?
Multilateral completion systems allow the drilling and completion of multiple lateral boreholes within a single mainbore. This allows for alternative well-construction strategies for vertical, inclined, horizontal, and extended-reach wells. Multilaterals can be constructed in both new and existing oil and gas wells.
What is a deviated well?
Deviated well means a well that is not drilled vertically for its whole length, or a well with an inclination designed to be other than zero degrees from vertical.
How is a horizontal well drilled?
Most horizontal wells are started by drilling a vertical well. After drilling down to the target rock, the pipe is pulled out of the well and a motor is attached to the drill bit. The motor is fuelled by a flow of drilling mud down the drill pipe, rotating the bit without rotating the entire pipe.
What is a driven well?
Driven wells are constructed by driving a small-diameter pipe into shallow water-bearing sand or gravel. Usually a screened well point is attached to the bottom of the casing before driving.
How does a horizontal well work?
Horizontal drilling is the process of drilling a well from the surface to a subsurface location just above the target oil or gas reservoir called the “kickoff point”, then deviating the well bore from the vertical plane around a curve to intersect the reservoir at the “entry point” with a near-horizontal inclination.
What are the characteristics of a multilateral well?
A multilateral well can have lateral branches into different formation layers. Multilateral wells make it possible to connect several well paths to one wellbore. A multilateral well is a well that has more than one branch radiating from the main wellbore.
What is the meaning of multilateral?
More Example Sentences Learn More About multilateral Did you know? Since lateral means “side”, multilateral means basically “many-sided”.
What is multilateralism in international relations?
Multilateralism is when at least three governments participate in a particular issue or to try to solve a problem. Multilateralism is an example of cooperation among world governments and used in contrast with unilateralism.
What is a multi-branch well?
A multilateral well is a well that has more than one branch radiating from the main wellbore. Word builder multi- The prefix multi- is used in a number of words which refer to several things.