Pushing the ERD Envelope at Wytch Farm

Cocking, D.A.; Bezant, P.N.; Tooms, P.J.

doi:10.2523/37618-ms

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Torque and Drag Analysis1

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1998

1999

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“…Experience on previous ER wells had indicated that the use of fibrous LCM pill had a very beneficial effect in improving wellbore cleaning and reducing both torque and drag [4]. When torque values began to increase in the 8 ½" section, LCM was used to reduce torque by improving hole cleaning effectiveness.…”

Section: Torque and Drag Analysismentioning

confidence: 99%

Shallow Kick-off Extended Reach Drilling in GOM

Meize¹,

Chesebro'²,

Stubblefield³

et al. 1999

SPE/IADC Drilling Conference

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Section: Torque and Drag Analysismentioning

confidence: 99%

Shallow Kick-off Extended Reach Drilling in GOM

Meize¹,

Chesebro'²,

Stubblefield³

et al. 1999

SPE/IADC Drilling Conference

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Application of Steerable Rotary Drilling Technology to Drill Extended Reach Wells

Colebrook

Peach

Allen

et al. 1998

IADC/SPE Drilling Conference

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fax 01-972-952-9435. AbstractA steerable rotary drilling system (SRD system) has been used on several extended reach wells at the Wytch Farm oilfield in southern England.Recently the SRD system successfully drilled the 8½" hole section of the first well ever to have a step out of more than 10km. The record breaking well, M11SPZ/SPY, has a measured depth of 34,967ft [10,658m] and a horizontal departure of 33,181ft [10,113m]. The reservoir section required rotary drilling techniques to be used. Improvements in drilling operations and reductions in cost were made in drilling the reservoir section. This section was geosteered throughout the reservoir with the SRD system giving control of both the inclination and azimuth.The 9 5 / 8 " casing was set from surface to 28,986ft. The SRD system drilled from 29,337ft (MD) to TD at 34,967ft (MD). The SRD system drilled a total of 7,680ft in 44 days (this included a side-track for geological reasons) against the plan of 5,548ft in 49 days. This improvement against the plan was achieved largely by the elimination of the requirement to slide a steerable motor in order to steer the well. Continuous rotation of the drillstring helped reduce drillstring torque and drag and improved hole cleaning. This led to more efficient weight transfer to the bit and allowed higher average penetration rates.

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Pushing the ERD Envelope at Wytch Farm

Cited by 2 publications

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Shallow Kick-off Extended Reach Drilling in GOM

Shallow Kick-off Extended Reach Drilling in GOM

Application of Steerable Rotary Drilling Technology to Drill Extended Reach Wells

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