Casing Running Milestones for Extended-Reach Wells

Mason, Colin; Allen, Frank; Ramirez, A.A.; Wolfson, L.; Tapper, R.

doi:10.2118/52842-ms

Cited by 23 publications

(3 citation statements)

References 6 publications

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“…The open hole slack-off friction factor was calculated to be 0.35, which was higher than seen on previous wells, see Reference [1] for further details. Here 224 roller centralisers were installed at one per joint (coverage 2,778m) at the bottom of the string.…”

Section: Bp Exploration Experiencementioning

confidence: 72%

Planning Fit for Purpose Solutions with Roller Technology - the Value of Applied e-valuation

Fraser¹,

Mike²,

Mason³

2003

Proceedings of SPE/IADC Drilling Conference

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fax 01-972-952-9435. AbstractExtended-reach drilling and completion operations are often at the limits of current technology. Roller tool technology has frequently been used to overcome onerous torque and drag challenges associated with drilling and completing high angle wells. These tools significantly reduce mechanical friction, and as described in this paper, enable completion operations to match the reach obtained by current drilling practices. Significantly, roller tool technology is currently being used to drill and complete a series of 16 horizontal wells from a semi-submersible rig in the North Sea. A record 15,360ft high angle well with a horizontal reach of over 13,300ft and true vertical depth (TVD) of only 2,900ft has recently been drilled and completed. This well sets a new benchmark for shallow extended-reach wells in the industry. The appropriate application of roller tool technology is instrumental to cost-effective drilling and completion of high departure wells now, and in the future. In order to further progress this technology and to ensure that it is used in the most appropriate way, demands that quality data be captured from each operation and interpreted in a consistent and correct manner.

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Section: Bp Exploration Experiencementioning

confidence: 72%

Planning Fit for Purpose Solutions with Roller Technology - the Value of Applied e-valuation

Fraser¹,

Mike²,

Mason³

2003

Proceedings of SPE/IADC Drilling Conference

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“…For example, this may explain, why significantly higher friction factors are associated with running casing than with tripping drillpipe in the same wellbore 6 . It is possible that t he higher casing running friction factors contain the effect of hole clearance and stiffness effects that is not properly accounted for in the models.…”

Section: Stiff-s Tring Modelmentioning

confidence: 99%

Step Changes Needed To Modernize T&D Software

Mason

Chen

2007

All Days

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TX 75083 -3836 U.S.A., fax 1 .972. 952.9435. AbstractTorque and drag (T&D) modeling is regarded as an invaluable process to assist in well planning and to predict and prevent drilling problems. Although T&D software has existed for over 20 years, some confusion still exists over the validity of the models used to characterize drilling and completion operations. This paper provides an assessment of current limitations of the various T&D models (soft-string and stiffstring) and appraises their validity. Field data from various operations is used to illustrate certain limitations. The paper defines future requirements for what is considered to be the next generation of T&D models . Probably the most important technical requirement is a more realistic stiff-string model to correctly account for the impact of tubular stiffness, hole clearance and tortuosity effects.

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“…Field case studies (Allen et al 1997;Cocking et al 1997;Naegel et al 1998;Mason et al 1999;Mason et al 2003;Rae et al 2003Rae et al , 2004Eck-Olsen et al 2007;Redlinger and McCormick 2011) reveal that casing-floatation methodologies have an obvious potential to eliminate casing running from the list of most-challenging operations. This study intends to fill in the gaps in understanding associated with the buoyancy effect on the phenomena.…”

Section: Introductionmentioning

confidence: 99%

Buckling of Buoyancy-Assisted Tubulars

Arslan¹,

Ozbayoglu

Miska

et al. 2014

SPE Drilling &Amp; Completion

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Use of buoyancy provides multiple solutions to overcome the drag problem for wells with shallow and high step-out profiles. Although both full-and partial-flotation methodologies have been used successfully to extend the reach in many field cases, the influence of buoyancy on tubular instability has not been investigated yet. This paper presents an extensive experimental and analytical study, focusing on static tubular instability inside horizontal wellbores with emphasis on buoyancy. In terms of the experimental research, running tubulars into horizontal wellbores was simulated with four different pipes, varying buoyancy, and varying loading speed. Throughout the tests, axial loads both applied to the pipe and transmitted through the pipe were recorded simultaneously, with respect to pipe displacement. Experiments reveal that currently existing models give reasonable approximations as long as buoyancy is not included in the tests. The major interpretation from the experiments is contrary to what currently existing expressions imply (i.e., tubular buckles immediately as effective weight approaches zero; even for naturally buoyant conditions, considerable amount of axial load is still required for both buckling initiation and helix formation). As buoyancy increases further, results and predictions diverge from each other considerably. To eliminate the discrepancies between results and predictions, theoretical study was conducted. Empirical correlations that also consider the influence of buoyancy on critical buckling loads are presented. Finally, another pipe was also tested within different buoyancy conditions to validate the equations developed. Experimental results of this pipe closely match the new analytical findings. This experimental and analytical study provides useful results for future applications with buoyancy-assisted tubulars, in terms of practical engineering and design calculations.

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Casing Running Milestones for Extended-Reach Wells

Abstract: This paper was prepared for presentation at the 1999 SPE/IADC Drilling Conference held in Amsterdam, Holland, 9-11 March 1999.

Cited by 23 publications

References 6 publications

Planning Fit for Purpose Solutions with Roller Technology - the Value of Applied e-valuation

Planning Fit for Purpose Solutions with Roller Technology - the Value of Applied e-valuation

Step Changes Needed To Modernize T&D Software

Buckling of Buoyancy-Assisted Tubulars

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