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Sakhalin-1 project drills world’s longest extended-reach well

Exxon Mobil subsidiary Exxon Neftegas Limited has successfully drilled the world’s longest extended-reach well at the Odoptu field, offshore far east Russia.

The Odoptu OP-11 well reached a total measured depth of 40,502 feet (12,345 meters or 7.67 miles) to set a record for extended-reach drilling (ERD). The Odoptu OP-11 also set a world record with a horizontal reach of 37,648 feet (11,475 meters or 7.13 miles).

Exxon Neftegas completed the record-setting well in only 60 days using ExxonMobil’s Fast Drill Process and Integrated Hole Quality technology to maximize performance in every foot of hole drilled at OP-11.

Odoptu, one of three Sakhalin-1 Project fields, is situated 5 to 7 miles (8 to 11 kilometers) offshore northeast Sakhalin Island. The ERD process enables onshore drilling beneath the seafloor to the offshore oil and gas reservoirs in one of the most challenging sub-arctic environments in the world.

Since the first Sakhalin-1 well was drilled in 2003, six of the world’s 10 record-setting ERD wells have been drilled at the project. The specially designed Yastreb rig has been used throughout, setting multiple industry records for measured depth, rate of penetration and directional drilling.

Since startup, the Sakhalin-1 project has produced approximately 300 million barrels (39 million tons) of oil for export to world markets. It also has been a key supplier of approximately 235 billion cubic feet (6.8 billion cubic meters) of associated natural gas to customers in Khabarovsk Krai, in far eastern Russia.

Sakhalin-1 includes the Chayvo, Odoptu, and Arkutun Dagi oil and gas fields located off the northeast coast of Sakhalin Island in the Russian Far East. Potential recoverable resources are 2.3 billion barrels (307 million tons) of oil and 17.1 trillion cubic feet (485 billion cubic meters) of natural gas.



They will soon reach Japan underground?

Henry Gibson

Provide current nuclear reactors at every coal mine to provide heat for making steam and for heating coal to high temperatures and producing oxygen and then both the cost and the amount of CO2 needed to produce liquid fuels from coal will be much lower.

There is no reason why molten salt liquid fuel reactors cannot be built that will produce temperatures high enough to produce hydrogen from water to make into liquid fuels by combining it with CO2 from any source including the air. These units can be very small because they do not require the efficiencies of a large steam turbine. Any electricity generated from such high temperatures can be done with very efficient Stirling engines or with less efficient but cheap and small gas turbines in multiple units. The advent of centrifugal fuel processing and other technologies has eliminated the need for large reactors with massive amounts of moderators. Most power companies should reconsider any large steam turbines coal fired or not and none should be gas fired because engines are more efficient and redundant. All power companies should be required to loan monies for combined heat and power units in all buildings rather than building any new gas fired generators themselves. ..HG..

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