Drilling Rigs: Spar Bourgoyen et. al. (1986) Introduction to Drilling Engineering Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J 38 Land Rigs: Conventional Rigs!! • The mast structure is built on site and left it on site permanently after the end of drilling operation. • The height of conventional drilling rigs are variable. • Conventional drilling rigs are unconventional now! http://www.geoexpro.com/ Introduction to Drilling Engineering Why do we need to have a mast for drilling? Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J 39 Land Rigs: Portable Rigs • The mast is mounted on a truck, also called truck mounted. • Portable mast drilling rigs are usually used for drilling shallow to medium depth holes up to 1,000 m. • The deck height is usually 10 to 20 ft. http://rogermontgomery.com/ • Application in work-over and well intervention operations, shallow depths (eg. Coil Seam Gas), mineral exploration and research. • Can drill slant well from surface! • They are mostly hydraulic! http://gefco.com/ Introduction to Drilling Engineering Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J 40 Land Rigs: Portable Rigs • Slant wells, where the drilling can be started at a given inclination. • The trajectory would be a hold section from surface. • 2 to 5 people operation, with daily rate of starts from $6,000 a day! • Rig up is in order of few hours! Introduction to Drilling Engineering Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J 41 Land Rigs: Jackknife or Cantilever • It is the most common onshore drilling rig. • The rig breaks into parts and each part is transported by trucks. • Medium to ultra deep onshore drilling is performing used this rig. • The mast can accommodate stands comprised of three to four drill pipes (singles). • Rig-up is done by either hydraulic Mitchell & Miska (2011) jacks or hoisting system. Introduction to Drilling Engineering Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J 43 Land Rigs: Jackknife or Cantilever • Can drill in medium to deep depending on their power. • The rigs are often classified based on the hoisting power, the depth that can drill or the maximum hook load. • A crew of 10 to 20 people work 24 hours a day, 7 days a week. • Rig-up is in order of few days. http://www.energyandresources.vic.gov.au/ • Can be Kelly drive or top-drive system. Introduction to Drilling Engineering Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J 44 Land Rigs: Helitransportable Rigs • Composed of parts that can be transported by Helicopter • Used for remote areas where portable rigs can not be deployed. • Light rigs drilling shallow wells. https://www.youtube.com/watch?v=IM dtxZiqz-c Introduction to Drilling Engineering Curtin University is a trademark of Curtin University of Technology CRICOS Provider Code 00301J 47 Determine the type of drilling rig required for drilling the well with provided information: (d) Under Great Lakes basin located in United States, which is being shared by eight states in US and two Canadian provinces, it has been reported to have considerable amount of oil and gas resources. At the same time, there are a lot of environmental considerations about drilling activities on the lake, as It contains the largest volume of fresh water in the world roughly about 300,000 square miles. For a given target in the lake, the distance from the proposed well location to land is estimated to be Y km and total vertical depth is Z ft. Water depth varies but it is about X ft. Great Lakes Basin 900 500 Dryden Kenora CANADA Fort Frances Lake Nipigon Longlac Great Lakes Basin Diverted drainage Lake basin 75 150 225 km Hearst Nipigona Marathon Thunder Ontario Minnesota 3Bay ! Timmins Isle Royale Rouyn-Noranda Lake Superior Wawa New Liskeard Duluth Superior Houghton Marquette Sault Ste Marie Greater Sudbury Quebec CANADA Montréal Ottawa Escanaba River 159 Wisconsin $t Paul Eau Claire USA Manitoutin Lake Nipissing Parry Georgian Sound Alpena. Lake Bay Midlande Lose Huron Sichos OTTAWA Green Bay . Lake Michigan Owen Manitowoc Ludington Saginawa saginale Toronto Lake. Michigan Sarnia lag SSY Windsor Madison Milwaukee Grand Racine Rapids Benton Detroit Harbor Chicago) South Bond Gary Sandusky Peoria Wayne Akron Indiana Ohio USA Kingston Sound Oshawa Goderich V Ontario Hamilton Buffalo Rochester New York Binghamton Erie Cleveland Scranton Illinois Toledo Lake Erie fort Pennsylvania Pittsburgh 400 400 Columbus il 900 75 850 800 Source: Based on a map from The Atlas of Canada. Adapted by CRS. (K. Yancey 3/23/06) Figure 4: Great lakes, after Pervaze et al. (2008)

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