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Multiple sliding sleeves can also be used in conjunction with openhole packers to provide considerable flexibility in zonal flow control for the life of the wellbore. This type of completion is also being adopted in some water injection wells, although these require a much greater performance envelope for openhole packers, due to the ...
A sliding sleeve is a standard component for the completion of an oil or gas well. Their main uses are to shut off flow from one or more reservoir zones or to regulate pressure between zones. There are two main categories of sliding sleeves: open/close and choking. Open/close sleeves are shifted between a full open position and a closed position.
Modern wells have blowout preventers intended to prevent such an occurrence. An accidental spark during a blowout can lead to a catastrophic oil or gas fire . Prior to the advent of pressure control equipment in the 1920s, the uncontrolled release of oil and gas from a well while drilling was common and was known as an oil gusher , gusher or ...
Patents describe in detail how several tracers are typically used in the same well. Wells are hydraulically fractured in different stages. [9] Tracers with different half-lives are used for each stage. [9] [10] Their half-lives range from 40.2 hours (lanthanum-140) to 5.27 years . [11]
In exploration wells that are later abandoned, the wellhead may be recovered for refurbishment and re-use. Offshore, where a wellhead is located on the production platform it is called a surface wellhead , and if located beneath the water then it is referred to as a subsea wellhead or mudline wellhead.
By 1992, IronMind had moved all design and production of its grippers in-house. [14] The next generation of the Silver Crush Grippers, released in 1993, marked the next major step in gripper evolution; their stainless-steel handles replaced the previous chrome-plated mild steel handles, and a new assembly technique eliminated the drift pin central to the design of the older grippers. [15]
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