Drilling With Casing Overcomes Losses To Thief Zone

Adams, H.; Rosenberg, Steven Michael; Montgomery, Monty; Galloway, Greg

doi:10.4043/17687-ms

Cited by 5 publications

(2 citation statements)

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“…3 Since a tie-back would be required if a liner was utilized, it was decided to drill well A3 with a full string of casing rotated at surface through a casing drive tool. Specifically, severe mud losses in the TB-4 sand were recorded in the A-1 well, using oil-based mud (OBM).…”

Section: Offshore Casing While Drilling Technical Choices In Overcomimentioning

confidence: 99%

A Staged Approach to the Introduction of Casing and Liner Drilling

Davies

Clark

McClain

et al. 2006

Offshore Technology Conference

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractOperators are always looking for ways to reduce risk in high cost environments and maximize value. Many challenges exist in the drilling environment today including depleted sands, lost circulation zones, weak formations and rubble zones. Casing and liner drilling has found its way from a niche market into the mainstream drilling environment through recent successes in a variety of these applications. There exist several options to drilling down casing or liners. These include retrievable BHA's with traditional measurement and logging equipment and non-retrievable BHA's that are drilled or reamed into place and cemented. This paper presents several case studies where non-retrievable casing/liner drilling technology has either improved the economics of a challenging application or made the application technically viable. These applications vary from onshore wells with tight fracture gradient schemes, shallow onshore wells looking to improve economics in surface hole intervals to offshore wells reducing risk by drilling or reaming down casing and liner strings. Applications will be taken from the Gulf of Mexico, South Texas, West Africa, Australia and Norway. The justification of using casing/liner drilling technology on these wells will be explored, as well as the lessons learned to apply to future drilling programs.

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Section: Offshore Casing While Drilling Technical Choices In Overcomimentioning

confidence: 99%

A Staged Approach to the Introduction of Casing and Liner Drilling

Davies

Clark

McClain

et al. 2006

Offshore Technology Conference

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“…The benefits of CWD to drill through difficult formations are well documented (Adams et al 2005;Tessari and Warren 2006;Beaumont et al 2010;, eliminating NPT from conventional drilling operations by eliminating the need to trip pipe in openhole and run casing, mitigating many downhole problems. CWD results in a "plastering effect" that apparently strengthens the formations while drilling ahead (Adams et al 2005; Lopez and Bonilla 2010; Watts et al 2010;Karimi et al 2011a, b), reducing NPT from sloughing shale, tight hole, bridges, losses, cuttings transport (large-diameter surface hole), unstable zones, and stuck pipe.…”

Section: Introductionmentioning

confidence: 99%

Casing During Drilling With Rotary-Steerable Technology in the Stag Field—Offshore Australia

Graves

Herrera

2013

SPE Drilling &Amp; Completion

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Summary Originally discovered in 1993, the Stag oil field, located on the Northwest shelf of Western Australia, has produced more than 58 million bbl since production began in 1998 (Goodacre et al. 2000). The field is shallow (680 m subsea), encompassing highly unconsolidated and highly permeable sandstone. Reservoir depletion, unconsolidated rock, water breakthrough, and sand production have created conditions under which infill-drilling campaigns have become increasingly problematic in the Stag field in recent years. There have been numerous papers documenting the history of the Stag field (McDiarmid et al. 2001; Muecke et al. 2002; Wibawa et al. 2008). On three recent infill wells, the intermediate 12¼-in. intervals were drilled and cased with casing-while-drilling (CWD) technology with a rotary-steerable system (RSS). This was used to navigate wellbore congestion, to drill designer well paths to avoid "incoherencies" [a seismic attribute that is mappable and correlates with drilling problems (Chima et al. 2012)], to land the horizontal section, and then to drill horizontal tangent sections out to the initial reservoir penetration (liner point). The CWD applications progressed from a "new technology" trial to a stretch reach and performance goal, to finally successfully being used as a key enabling technology to drill a well that might otherwise be undrillable because of instability issues. The directional CWD 12¼-in.-hole intervals were drilled from just below the 13-⅜in. surface casing to the 9⅝-in.-casing point, building from 25° inclination to horizontal and holding thereafter. This program (the first applications of this type in Australia) resulted in two consecutive world-record runs. The result is that CWD is a viable enabling technology that will be used to drill future Stag infill wells and should be considered as a viable alternative on other drilling projects. This paper will discuss the identification of the technology application, planning, implementation, results, and lessons learned. This paper will end with a notional conversation regarding CWD becoming a mainstream method.

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Liner Drilling Technology as a Tool to Reduce NPT - Gulf of Mexico Experiences

Rosenberg

Gala

2011

SPE Annual Technical Conference and Exhibition

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It is increasingly difficult to find hydrocarbon reserves located in benign environments, a situation which has resulted in the oil and gas industry moving to locations where significant drilling challenges are encountered. These challenges often lead to costly nonproductive time (NPT) and increased operational risk. To reach their objectives, operators must make decisions "outside the box" to mitigate these risks. Liner drilling (LD) technology has been introduced in recent years as a well construction technique and has proved to significantly reduce NPT and operational risks. As seen in some of the case histories, LD in lieu of conventional drilling methods was identified as the only practical way for the operator to accomplish his objective(s)—well abandonment being the only other alternative. This paper presents five case histories, in both shelf and deepwater Gulf of Mexico (GOM), where LD technology was applied to mitigate lost circulation, wellbore stability issues, and other drilling hazards. Also included is a discussion of the liner tool and casing bit systems that were implemented as well as brief well histories depicting the drilling hazards mitigated and the eventual outcomes. The operational parameters are highlighted together with the LD results and the associated value to the operator.

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Drilling With Casing Overcomes Losses To Thief Zone

Cited by 5 publications

References 0 publications

A Staged Approach to the Introduction of Casing and Liner Drilling

A Staged Approach to the Introduction of Casing and Liner Drilling

Casing During Drilling With Rotary-Steerable Technology in the Stag Field—Offshore Australia

Liner Drilling Technology as a Tool to Reduce NPT - Gulf of Mexico Experiences

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