Casing Drilling Directional Wells

Warren, T.M.; Lesso, Bill

doi:10.4043/17453-ms

Cited by 8 publications

(3 citation statements)

References 5 publications

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“…As a result, hazards can be divided into four categories: low, medium, high, and very high. The methodical process of locating, evaluating, and reacting to a project's possible risks is known as risk management [16].…”

Section: Casing While Drilling-related Safety Issues Versus Tradition...mentioning

confidence: 99%

Casing While Drilling

Bhatkar,

Wadgaonkar

2024

Advances in Oil and Gas Well Engineering

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Conventional drilling methods have faced significant operational and financial challenges, such as the cost of purchasing, inspecting, handling, and transporting drill equipment, and, most importantly, tripping in and out of the drill string whenever the Bottom Hole Assembly (BHA) requires replacement, a wiper trip, or total depth is reached. Tripping the drill string in and out not only contributes to Non Productive Time (NPT), but also causes well control issues such as wellbore instability and lost circulation. All of this has prompted the oil and gas sector, as well as any other engineering industry, to look for innovative techniques and approaches to address these issues. A new drilling method has emerged as a result of technological developments and continuous improvements to conventional drilling methods. Casing when drilling has been established as a result of technological developments and continuous improvements to traditional drilling processes. Casing Drilling is the process of drilling and casing a well at the same time, employing active casing to maximize production. This paper provides an overview of the casing while drilling method (CwD) and its practical application in well drilling. The typical drilling method and casing while drilling are also compared. The CwD approach outperforms the standard drilling method by a wide margin.

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Section: Casing While Drilling-related Safety Issues Versus Tradition...mentioning

confidence: 99%

Casing While Drilling

Bhatkar,

Wadgaonkar

2024

Advances in Oil and Gas Well Engineering

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“…[12][13] The assembly is locked to the casing with a specialized tool designed to transmit torque, axial load, and fluid pressure from the casing to the drilling assembly. A conventional rotary steerable directional assembly is run below the casing shoe to drill a pilot hole that is simultaneously underreamed to a diameter large enough to accept the casing.…”

Section: Directional Casing Drillingmentioning

confidence: 99%

Designing High-Angle/Casing-Directionally-Drilled Wells

Borland¹,

Watts²,

Lesso³

et al. 2006

Offshore Technology Conference

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractThis paper discusses the design and testing of 10 ¾-in. and 7 5/8-in. casing directional drilling equipment and procedures that ConocoPhillips plans to use on a mature North Sea asset. ConocoPhillips has worked with Tesco Corp. and Schlumberger in assembling the tools necessary to complete this task. These include: downhole casing drilling tools, underreamers, positive displacement motors, MWD tools, rotary steerable systems (RSS), and high capacity winches for this work. Testing this equipment in commercial North Sea operations is prohibitively expensive. Therefore, tests were conducted at a drilling test facility near Cameron, Texas, where operations were conducted over a wide range of rotating speed, weight and flow conditions as well as inclinations from vertical to horizontal. High frequency surface and downhole drilling mechanics measurements assisted in diagnosing problems and improving the systems. The project serves as a blueprint for managing technical developments among multiple operators and service companies.

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“…A conventional rotary steerable directional assembly is run below the casing shoe to drill a pilot hole that is simultaneously underreamed to a diameter large enough to accept the casing. [12][13] The assembly is locked to the casing with a specialized tool designed to transmit torque, axial load, and fluid pressure from the casing to the drilling assembly. However, use of this system on a conventional offshore rig requires modification to the surface equipment.…”

Section: Casing Directional Drillingmentioning

confidence: 99%

Drilling High-Angle Casing Directionally Drilled Wells With Fit-for-Purpose String Sizes

Borland¹,

Watts²,

Warren³

et al. 2006

Proceedings of IADC/SPE Drilling Conference

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TX 75083-3836, U.S.A., fax 1.972.952.9435. AbstractThis paper discusses the design and testing of 10 ¾-in. and 7 5/8-in. casing directional drilling equipment and procedures that ConocoPhillips plans to use on a mature North Sea asset. ConocoPhillips has worked with Tesco Corp. and Schlumberger in building the tools necessary to complete this task. These include: downhole casing drilling tools, underreamers, positive displacement motors, MWD tools, rotary steerable systems (RSS), and high capacity winches for this work. Testing this equipment in commercial North Sea operations is prohibitively expensive. Therefore, tests were conducted at a drilling test facility near Cameron, Texas, where operations were conducted over a wide range of rotating speed, weight and flow conditions as well as inclinations from vertical to horizontal. High frequency surface and downhole drilling mechanics measurements were made that allowed for diagnosing problems and improving the systems.

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Casing Drilling Directional Wells

Cited by 8 publications

References 5 publications

Casing While Drilling

Casing While Drilling

Designing High-Angle/Casing-Directionally-Drilled Wells

Drilling High-Angle Casing Directionally Drilled Wells With Fit-for-Purpose String Sizes

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