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Mist drilling is used if only modest amounts of water inflow are experienced during air drilling. A small amount of water is injected into ...
Read More »Mist Drilling
Drilling
Drilling is a process whereby a hole is bored using a drill bit to create a well for oil and natural gas production. There are various kinds of oil wells with different 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 of oil or gas in fields of proven economic and recoverable oil or gas
- Relief wells are drilled to stop the flow from a reservoir 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 an oil producing unit so as to maintain reservoir pressure or to lower the viscosity of the oil, allowing it to flow into a nearby well.
Natural Gas Drilling
Natural gas drilling, like nitrogen, can be used in lieu of dry air to reduce the risk of downhole fires. However, as it is released to the ...
Read More »Nitrogen Drilling
Nitrogen may be used in place of air drilling in underbalanced drilling operations. Its major advantage is that mixtures of nitrogen and ...
Read More »Dry Air Drilling
Dry Air Drilling Overview Dry air drilling is an old underbalanced drilling technique used primarily in environmentally sensitive areas to prevent formation contamination. A basic air drilling surface setup is shown in Figure 1. FIGURE 1 However, effective hole cleaning is a problem with standard air drilling. The drag force on …
Read More »Introduction to Underbalanced Drilling
This topic covers the underbalanced drilling method, which is defined as the practice of drilling a well with the wellbore fluid gradient less than the natural formation gradient. Besides minimizing lost circulation and increasing the penetration rate, this technique has a widely recognized benefit of minimizing the damage caused by …
Read More »The Principles of Geosteering | Geosteering Best Practices
In this topic, we present a brief list of principles to guide you through planning your GeoSteering project and in ....
Read More »Case Study of Geosteering
The Honeoye Storage Corporation (HSC) operates a gas storage facility in Ontario County, New York, about 40 miles south of Rochester ...
Read More »Geosteering Practices
Four critical factors must be determined to steer a well accurately. We will describe each factor below...
Read More »Preparing the Geosteering Plan
No Geosteering Team can steer a horizontal, or high-angle extended-reach wellbore without first preparing a geosteering plan from surface to kick-off point ...
Read More »Drilling Measurements and Logging Tools in Geosteering
Horizontal drilling technology has come a long way since the mid-1980’s. With the advent of Measurement While Drilling (MWD) and Logging While Drilling (LWD) tools in ...
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