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Casing Shoe
In oil drilling and borehole mining, a casing shoe or guide shoe is a bull-nose shaped device which is attached to the bottom of the casing string. A casing hanger In petroleum production, the casing hanger is that portion of a wellhead assembly which provides support for the casing string when it is lowered into the wellbore. It serves to ensure that the casing is properly located. When the casing string has ..., which allows the casing to be suspended from the wellhead, is attached to the top of the casing. References Drilling technology {{engineering-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drilling (oil)
An oil well is a drillhole boring in Earth that is designed to bring petroleum oil hydrocarbons to the surface. Usually some natural gas is released as associated petroleum gas along with the oil. A well that is designed to produce only gas may be termed a gas well. Wells are created by drilling down into an oil or gas reserve that is then mounted with an extraction device such as a pumpjack which allows extraction from the reserve. Creating the wells can be an expensive process, costing at least hundreds of thousands of dollars, and costing much more when in hard to reach areas, e.g., when creating offshore oil platforms. The process of modern drilling for wells first started in the 19th century, but was made more efficient with advances to oil drilling rigs during the 20th century. Wells are frequently sold or exchanged between different oil and gas companies as an asset – in large part because during falls in price of oil and gas, a well may be unproductive, but if price ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borehole Mining
Borehole Mining (BHM) is a remote operated method of extraction (mining) of mineral resources through boreholes based on in-situ conversion of ores into a mobile form (slurry) by means of high pressure water jetting ( hydraulicking). This process is carried-out from a land surface, open pit floor, underground mine or floating vessel through pre-drilled boreholes. History Based on the US Patent database, the method history can be traced back to the beginning of the XX Century (1906). The most advanced BHM tool design was patented in 1926. With a few improvements, this design concept remains a base for the modern BHM tools and technologies. In the US, the major R&D were conducted by USBM in the 1970 and 80s. Borehole mining of Uranium in Kazakhstan remains the most advanced BHM project in the world.G. Abramov, Geotechnology - A Solution For Unconventional Uranium, IJSRED Volume 3 Issue 3 June 2020 The process # A borehole is drilled to a required depth; # A casing column is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Casing String
In drilling technology, casing string is a long section of connected oilfield pipe that is lowered into a wellbore and cemented. The purpose of the casing pipe is as follows: * prevent the collapse of the borehole * prevent formation fluids from entering the borehole in an uncontrolled way (blow out) * prevent fluids in the borehole ( such as produced oil or gas, drilling mud etc.) from entering other formations Background The pipe segments (called "joints") are typically about in length, male threaded on each end and connected with short lengths of double-female threaded pipe called couplings. (Some specialty casing is manufactured in one piece with a female thread machined directly into one end.) Specification 5C3 of the American Petroleum Institute standardizes 14 casing sizes from to outside diameter ("OD").''Technical Report on Equations and Calculations for Casing, Tubing, and Line Pipe used as Casing or Tubing; and Performance Properties Tables for Casing and Tubing: 7t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Casing Hanger
In petroleum production, the casing hanger is that portion of a wellhead assembly which provides support for the casing string when it is lowered into the wellbore. It serves to ensure that the casing is properly located. When the casing string has been run into the wellbore it is hung off, or suspended, by a casing hanger, which rests on a landing shoulder inside the casing spool. Casing hangers must be designed to take the full weight of the casing, and provide a seal between the casing hanger and the spool. Casing Hangers may also be suspended within the wellhead by means of radial distortion of the wellhead bore e.g. the "Pos-Grip" method. This is installed to support the individual casing strings in the well. It is the landing base or the casing head. This is usually welded or screwed to the top of the surface casing string. The surface casing serves as a foundation pile for the well which transfers the hanging load to the earth. The casing head is prepared with a bowl into w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
