Exxon Mobil Corp. subsidiary Exxon Neftegas Limited (ENL), has completed drilling of the Z-11 well, the longest measured depth extended-reach drilling (ERD) well in the world. Located on
The multiphase Sakhalin-1 project includes the Chayvo field which is located 5 to 7 miles (8 to 11 km) offshore. The Z-11 was drilled to the Chayvo reservoir from the Yastreb rig, the world's largest land-based drilling rig. Overall, the Chayvo field reached its peak production rate of 250,000 b/d of oil in February 2007 after an on-schedule startup in October 2005. The Z-11 is the 17th ERD producing well to be completed as part of the Sakhalin-1 Project. It was drilled in 61 days, more than 15 days ahead of schedule and below expected cost with no safety or environmental incidents.
Since the first Sakhalin-1 well was drilled in 2003, the time required to drill these world-class wells has been reduced by more than 50%. When compared to industry benchmarks, Sakhalin-1 wells are the world's fastest drilled ERD wells.
"ExxonMobil, through the operatorship of Exxon Neftegas Limited, is pleased that the Sakhalin-1 Consortium achieved this record-setting milestone," said Neil Duffin, president of ExxonMobil Development Company. "Our consortium is committed to the continuing development of the Sakhalin-1 Project which will require significant investment, planning, execution, operating expertise and the employment of leading-edge technology."
The project team applied ExxonMobil proprietary technologies, including Integrated Hole Quality (IHQ) technology and the Fast Drill Process, to deliver the Z-11 well.
"The physics based modeling and experimental validations of our IHQ technology allowed us to successfully design and drill the Z-11," said Steve Cassiani, president of ExxonMobil Upstream Research Company. "With this technology we were able to take into account a broad range of interdependent design variables including rock strengths, stresses, and wellbore hydraulics to successfully drill this well."
Used in conjunction with IHQ technology was an optimization process called Fast Drill, which is a unique energy-based analysis tool and work process that allows rig site and drilling engineering personnel to maximize performance in every foot of hole drilled.
The Sakhalin-1 Project will bring significant economic benefits to
Exxon Neftegas Limited (30% interest) is operator for the project, which includes the Japanese company Sakhalin Oil and Gas Development Co. Ltd., (30%); affiliates of Rosneft, the Russian state-owned oil company, RN-Astra (8.5%), Sakhalinmorneftegas-Shelf (11.5%); and the Indian state-owned oil company ONGC Videsh Ltd. (20%).
Source:ExxonMobil
Recommended Reading
US NatGas Flows to Freeport LNG in Texas Seen at Five-month High, LSEG Data Shows
2024-05-17 - The startup and shutdown of Freeport and other U.S. LNG export plants often has a major impact on global gas prices.
Canada’s Pembina Pipeline in No Rush to Invest in TMX
2024-05-14 - The Trans Mountain Pipeline’s toll structure has too much "uncertainty," said Pembina CFO Cameron Goldade on an earnings call.
LM Energy to Expand Gas Gathering System in the Delaware
2024-05-13 - LM Energy is building new compressor stations and adding 70 miles of pipeline in the Delaware Basin.
ONEOK to Expand NGL Network Around Houston Through $280MM Acquisition
2024-05-13 - Easton Energy is agreeing to sell 450 miles of lines along Southeast Texas coast to ONEOK.
Enbridge Plans to Increase Permian Oil Pipeline’s Capacity
2024-05-10 - Midstream company Enbridge announced an open season on the Gray Oak Pipeline for a proposed 120,000 bbl/d expansion and updated its M&A efforts.