Rig: Randolph Yost

Name Randolph Yost
Owner Shelf Drilling Offshore Resources Limited II
Manager Shelf Drilling, Ltd.
Rig Type Jackup
Sub Type Independent Leg Cantilever
Jackup Type Standard
Max Water Depth (ft) 300
Max Drill Depth (ft) 25000
Dimensions (ft) 243 x 200 x 26
Leg Length (ft) 410
Competitive Yes

Current Location

Country USA (Alaska)
Region North America

Drilling Equipment

Drawworks Type National Oilwell Varco E-3000
Drawworks HP 1600
Mud Pumps Type National Oilwell Varco A-1700-PT Triplex
Top Drive National Oilwell Varco TDS-4S
Hookload Capacity (lbs) 1000000

Rig Construction Details

Rig Design LeTourneau
Rig Model 116-C
Year Built 1979
Country of Build USA
Yard Name Brownsville, Texas
Group Yard Name Marathon LeTourneau Offshore

Rig Contract Details

Operating Status Cold Stacked
Operator Kadmas

Rig Images


11 Jul 2013

KrisEnergy completes Tayum-1 exploration well offshore Kalimantan, Indonesia

KrisEnergy Ltd (“KrisEnergy” or “the Company”), an independent upstream oil and gas company, announces it has completed drilling of the Tayum-1 exploration well in the Kutai production sharing contract (“PSC”) offshore Kalimantan in the Makassar Strait, Indonesia. KrisEnergy is the operator of the Kutai PSC. Tayum-1, located approximately 8 km east-southeast of the Dambus-1 gas indication well, was drilled directionally to a total depth of 11,095 feet measured depth (“feet MD”), or -8,410 feet total vertical depth subsea (“feet TVDSS”). Preliminary well log evaluation indicates that the well encountered approximately 49 vertical feet of net gas pay from multiple sandstone intervals between 2,377 feet MD (-2,295 feet TVDSS) and 7,180 feet MD (-5,903 feet TVDSS) within the Miocene to Pliocene section, from which two gas samples were recovered. Two further gas samples were also recovered from what are interpreted to be shaly-sand gas pay intervals between 6,647 feet MD and 6,660 feet MD (-5,567 to -5,575 feet TVDSS) and 7,366 feet MD to 7,402 feet MD (-6,023 feet TVDSS to -6,046 feet TVDSS). The well has been plugged and abandoned as a gas discovery (by MDT sampling) and the Company is evaluating the results together with the data from two earlier gas discoveries, Dambus and Mangkok. The Randolph Yost jack-up rig, which is owned by Shelf Drilling Co., was released on 10 July 2013. KrisEnergy holds a 54.6% operated working interest in the Kutai PSC and is partnered by Salamander Energy with 23.4% and Orchid Kutai Ltd. with 22%.

3 Jun 2013

Spud of Tayum-1 Exploration Well

Salamander announces the spud of the Tayum-1 exploration well in the Kutai PSC, offshore East Kalimantan, Indonesia. Salamander has a 23.4% non-operated interest in the Kutai PSC. The Tayum well will be drilled by the Randolph Yost jack-up rig to a depth of approximately 2,563 metres total vertical depth sub-sea and is targeting multiple stacked deltaic sandstone reservoirs of Upper Miocene age adjacent to the Dambus discovery. The mean gross pre-drill estimate of prospective recoverable resource is c. 80 Bcf, with an upside (P10) case of 182 Bcf. The operator is carrying c. 73 Bcf (2C) of contingent resource, with an upside case of 115 Bcf (3C), on the block and success at Tayum could result in a commercial development.

22 Apr 2013

KrisEnergy begins drilling Bulu gas appraisal well in Indonesia

KrisEnergy Ltd (“KrisEnergy” or “the Company”), an independent upstream oil and gas company, announces that at 1000 GMT on 19 April 2003, the Randolph Yost jack-up rig commenced drilling of the Lengo-2 appraisal well in the Bulu production sharing contract (“PSC”) in the East Java Sea, Indonesia. The Lengo-2 appraisal well is intended to delineate the Lengo gas discovery drilled in 2008. Lengo-2 is approximately 3.3 km south of the Lengo-1 discovery well and is expected to reach a total measured depth of 2,726 feet (831 metres) in approximately 22 days. “Since KrisEnergy was established in 2009 we have been strategically building our portfolio of operated and non-operated assets along the entire exploration-to-production life cycle. Lengo-2 is the first well to drill under our operatorship and we have put great importance on the planning and execution of this well under a robust health, safety and environmental management system that of course follows international standards,” said Chris Gibson-Robinson, KrisEnergy’s Director of Exploration & Production. The Bulu PSC covers 697 sq km in three separate areas – Bulu A, Bulu B and Bulu C – over the East Java Basin in water depths of 50 to 60 metres. KrisEnergy holds a 42.5% operated working interest in the Bulu PSC and is partnered by AWE Limited with 42.5%, PT Satria Energindo with 10% and PT Satria Wijayakusuma with 5%. The Randolph Yost jack up rig is owned by Shelf Drilling Co. Subsequent to drilling of the Lengo-2 appraisal well, the rig will mobilise to the KrisEnergy operated Kutai PSC where it will drill the Tayum-1 exploration well.

About The Rigs Website

What you are seeing is a selection of sample rig information from the Infield Rigs database. If you would like to see more detailed information regarding the unit, please click here to contact a member of the Infield Rigs Team or call us on +44 207 423 5000