Newly Applied BHA Elements Contribute Towards Mainstreaming of Coiled tubing Drilling Applications

Gleitman, D.D.; Hardin, Jim; Hightower, C.M.; Gantt, L.L.; Smith, B.E.; Upchurch, Eric R.; Smith, M. B.

doi:10.2118/35130-ms

Cited by 8 publications

(1 citation statement)

References 5 publications

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“…Coiled tubing drilling underwent a rapid development in the nineties because this technique can be used to drill slim sidetracks from existing oil wells to reach bypassed oil (Gleitman 1996). Figure 2 shows the principles of this technique.…”

Section: Drillingmentioning

confidence: 99%

Drilling and Logging in Space: An Oil-Well Perspective

Peeters¹,

Blair²

2000

Space 2000

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Growing interest in extraterrestrial subsurface exploration has prompted an examination of advanced technologies for drilling slim holes and obtaining geophysical data in these holes. The borehole surveys with geophysical measurements called "logging", complement, and under favorable conditions, replace soil sampling. Very shallow drilling systems were used extensively during the Apollo lunar missions, and are in the planning stages for use on Mars. The prime objective is to gather scientific data, but these data could eventually provide a basis for the commercial use of space mineral resources. Given the strong scientific interest in water on Mars and the Moon, subsurface characterization with geophysical methods is attractive, because these methods can cover a much larger volume than soil sampling. Space technology has boosted the development of borehole geophysical instruments because both in space and in boreholes the instruments have to function in hostile environments, in confined spaces, and to be able to withstand large g-forces. This paper reviews oil industry drilling and geophysical borehole techniques that could be adopted for space applications. Coiled tubing drilling has many advantages because the surface facilities are compact, and an electrical cable in the tubing can transmit power and data. Moreover geophysical sensors can be embedded in the drill collars, which ensures that measurements are carried out while drilling, and this avoids risky reentry of geophysical tools in the hole. If kevlar is used for the coiled tubing, a laser beam could be transmitted via optic fibers in the coiled tubing wall. Using this beam to cut the rock would virtually eliminate mud and downhole motor requirements, and save a lot of weight. The quest for water and the strict requirements for redundancy, simplicity, and rugged instruments led to the selection of electromagnetic wave resistivity, natural gamma radiation, geophones, and induced epithermal neutron instruments as detectors. All these detectors can in principle be fitted into a coiled tubing string, and a combination of these measurements can provide quantitative information on the porosity, water-saturation, seismic velocity, and lithology of the Martian or Lunar soil.

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Section: Drillingmentioning

confidence: 99%

Drilling and Logging in Space: An Oil-Well Perspective

Peeters¹,

Blair²

2000

Space 2000

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A new orientation design model and numerical solution for coiled tubing drilling

Gao

2015

Journal of Natural Gas Science and Engineering

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Coiled Tubing Window Milling

1996

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Committees of the IADC and SPE. Permission to copy is restricted to an abstract of not more than 300 words. Illustrations may not be copied. The abstract should contain conspicuous acknowle~gment of where and by whom the paper is presented. Write Librarian, SPE P .0. Box 833836, Richardson, TX 75083-3836, U.SA. Telex, 163245 SPEDAL. ' AbstractReliable, low cost coiled tubing window milling technology has become the cornerstone of ARCO Alaska's coiled tubing sidetrack program at Prudhoe Bay. ARCO began to investigate coiled tubing drilling technology in 1989. The program grew into an aggressive field application of this technology, with over thirty wells drilled in the last 2 1/2 years. The program's frrst window was cut below production tubing with a coiled tubing bottom hole assembly (BRA) in the fall of 1994. To date, 14 wells have been sidetracked using this technique.The windows are cut off of a specifically formulated cement plug without the use of a whipstock. Reliability, always high, has continued to improve, while the cost and time required continue to come down. ARCO has been able to reduce sidetrack costs by an average of 40% compared to conventional sidetrack methods through the continued evolution of coiled tubing drilling technology, of which window milling is a part 1 • This window milling technique should also have the potential to save time and money in slim hole and conventional drilling applications as well.

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Newly Applied BHA Elements Contribute Towards Mainstreaming of Coiled tubing Drilling Applications

Cited by 8 publications

References 5 publications

Drilling and Logging in Space: An Oil-Well Perspective

Drilling and Logging in Space: An Oil-Well Perspective

A new orientation design model and numerical solution for coiled tubing drilling

Coiled Tubing Window Milling

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