Drilling
Drilling is a process whereby a hole is bored using a drill bit to create a well forĀ oilĀ andĀ natural gasĀ production. Ā There are various kinds ofĀ oilĀ wells with differentĀ functions:
- Exploration wells (or wildcat wells) are drilled for exploration purposes in new areas. The location of the exploration well is determined by geologists.
- Appraisal wells are those drilled to assess the characteristics of a proven petroleum reserve such as flow rate.
- Development or production wells are drilled for the production ofĀ oil orĀ gasĀ in fields of proven economic and recoverableĀ oilĀ orĀ gas
- Relief wells are drilled to stop the flow from a reservoirĀ when a production well has experienced a blowout.
- An injection well is drilled to enable petroleum engineers to inject steam, carbon dioxide and other substances into anĀ oil producing unit so as to maintain reservoir pressure or to lower the viscosity of theĀ oil, allowingĀ it to flow into a nearby well.
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Determining Density of Oil and Water Mixture: A Comprehensive Guide
To calculate the density of a mixture consisting of oil and water, we can use the following formula:(V1)(D1) + (V2)(D2)…
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Bottomhole Assembly Tools
Bottomhole Assembly (BHA) Components consist of varying tool types from: Stabilizers Stabilizers, by centralizing the drill string at selected points…
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What is a Drill Collar?
A drill collar is a device used at the lowest part of a drill string, an important part of the…
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Drill Pipe
Dimensions and Strengths Like other oilfield tubulars, drill pipe comes in a variety of lengths, diameters, weights and grades of…
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Kelly The Key to Efficient Operations
The kelly is a primary link between the drilling rig's surface equipment and the bit, and is therefore a critical…
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Drill String Design | Drill String Overview
A well-designed drill string is instrumental in optimizing penetration rates, controlling wellbore deviation, maintaining an "in gauge" ...
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Drill String and Bit Considerations in Deviated Wells
Drill String Design As inclination angle increases in a directional or horizontal well, the borehole walls support more of the…
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Underbalanced Drilling in Directional Wells
Drilling Directional Wells Underbalanced The main justifications for drilling a directional well underbalanced are to (1) reduce drilling costs, and/or…
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Drilling Hydraulics in Deviated Wells
One of a drilling fluid's primary functions is to remove drilled cuttings and transport them to the surface-in other words,…
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Horizontal Drilling | What is a horizontal drilling?
Horizontal drillingĀ is the process of directing part of a well course through a reservoir such that its inclination angle is…
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