Otto Energy Begins Drilling Duhat-2 Well in Lyete Island
Otto Energy Limited, as operator of the Service Contract 51 joint venture onshore the island of Leyte in the Philippines, provided the following update on the Duhat-2 exploration drilling campaign.
Progress
Otto is pleased to advise that at 1600 hours (local time) July 24, the Desco Rig 30 drilling rig commenced drilling the Duhat-2 exploration well. Drilling is expected to take approximately 31 days on a dry-hole basis.
Forward Plan
The forward plan is to drill the 8.5 inch pilot hole to 755 feet (230 meters) and then open this hole to 17.5 inch prior to setting the 13.375 inch casing.
Location and Proposed Depth
The exploration well, Duhat-2, is intended to be drilled to 3,445 feet (1,050 meters) and is proposed to test the San Isidro anticline on the western side of the northwest Leyte peninsula.
The earliest well drilled on northwest Leyte was a stratigraphic test at San Isidro-1 completed in May 1958 on the north-western tip of the island to 1,499 feet (457 meters). No hydrocarbons were detected. This was followed by the off-structure Calubian-1 in November 1958 which reached a total depth of 8,373 feet (2,552 meters). Oil shows were reported in side wall samples from the Tagnocot Formation despite the well being off structure, importantly these shows were in good quality sandstones now being targeted at Duhat-2.
There have been two previous attempts to test the crest of the San Isidro anticline with San Isidro SX-1/2 in 2000 and Duhat-1 in 2011. Both wells were programmed to reach a total depth of 3,281 feet (1,000 meters), though failed to drill beyond feet 984 feet (300 meters) due to an inability to progress beyond stressed claystone formations. A review of lessons learned from the Duhat-1 and Duhat-1A drilling campaign in 2011 highlighted the need for a rig with increased draw works, hook load and mud handling capacity to mitigate the risk of stuck pipe incidents and maximise the ability to reach prognosed reservoir intervals beneath the problematic claystone formations.
During 2012, Otto Energy, on behalf of its Joint Venture partners, acquired 93 miles (150 kilometers) of new, high quality 2D seismic data over the San Isidro anticline. Mapping with the better quality 2012 seismic data and regular line spacing has confirmed a large faulted anticline and allowed the optimal placement of the Duhat-2 well away from the fracture zones seen at Duhat-1.
The proposed Duhat-2 well is planned to test potential for multiple oil bearing sand intervals in the Middle Miocene Tagnocot Formation. Prospective Resource oil volumes range from approximately 1 to 88 million barrels, with a mean Prospective Resource of 34 million barrels.
WHAT DO YOU THINK?
Generated by readers, the comments included herein do not reflect the views and opinions of Rigzone. All comments are subject to editorial review. Off-topic, inappropriate or insulting comments will be removed.
- Blockchain Demands Attention in Oil and Gas
- Macquarie Sees USA Oil Production Exiting 2024 at 14MM Barrels Per Day
- CNPC Opens Sea-Land Oil Storage and Transport Facility in Bangladesh
- Oman Sees Increasing Ship-to-Ship Transfers of Russian Oil Bound for India
- US Govt Makes Record Investment of $6B for Industrial Decarbonization
- Eni, Fincantieri, RINA Ink Deal on Maritime Decarbonization
- Perenco Still Searching for Missing Person After Platform Incident
- Czech Utility CEZ Bucks Weaker Prices, Demand to Log Record Annual Profit
- Oil Falls as US Inventories Increase
- Ithaca Energy Studies Deal for Eni's UK Upstream Assets
- Equinor Makes Discovery in North Sea
- Standard Chartered Reiterates $94 Brent Call
- India Halts Russia Oil Supplies From Sanctioned Tanker Giant
- DOI Announces Proposal for Second GOM Offshore Wind Auction
- Centcom, Dryad Outline Recent Moves Around Red Sea Region
- PetroChina Set to Receive Venezuelan Oil
- Czech Conglomerate to Buy Major Stake in Gasnet for $917MM
- US DOE Offers $44MM in Funding to Boost Clean Power Distribution
- Oil Settles Lower as Stronger Dollar Offsets Tighter Market
- UK Grid Operator Receives Aid to Advance Rural Decarbonization
- Chinese Mega Company Makes Major Oilfield Discovery
- VIDEO: Missile Attack Kills Crew Transiting Gulf of Aden
- Norway Regulator Blasts Proposal to Halt New Oil and Gas Permits
- Chinese Mega Company Makes Another Major Oilfield Discovery
- What Is the Biggest Risk to Offshore Oil and Gas Personnel in 2024?
- Vessel Sinks in Red Sea After Missile Strike
- Exxon Rights in Stabroek Do Not Apply to Hess Merger with Chevron: Hess
- Analysts Reveal Latest Oil Price Outlook Following OPEC+ Cut Extension
- Equinor Makes Discovery in North Sea
- Standard Chartered Reiterates $94 Brent Call