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The Proposed Technical Plan for the Drilling of Dabie Sulu Scientific Borehole

Wei Zhang

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Abstract

Special drilling technologies are needed for the drilling of a 5000 m deep scientific core hole in very hard crystalline rock formation. According to the technical level and current status of the drilling techniques in the world, a hybridized drilling technology (petroleum drilling/geo drilling) should be adopted for the drilling under such hostile drilling conditions. This technology is characterized by installing a high speed top drive head and a diamond wireline coring system onto a petroleum rotary rig, which has been proven in praxis to be the most cost effective method for continuous coring in deep and hard formation.

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What this paper is about

Special drilling technologies are needed for the drilling of a 5000 m deep scientific core hole in very hard crystalline rock formation. According to the technical level and current status of the drilling techniques in the world, a hybridized drilling technology (petroleum drilling/geo drilling) should be adopted for the drilling under such hostile drilling conditions. This technology is characterized by installing a high speed top drive head and a diamond wireline coring system onto a petroleum rotary rig, which has been proven in praxis to be the most cost effective method for continuous coring in deep and hard formation.

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Available abstract

Special drilling technologies are needed for the drilling of a 5000 m deep scientific core hole in very hard crystalline rock formation. According to the technical level and current status of the drilling techniques in the world, a hybridized drilling technology (petroleum drilling/geo drilling) should be adopted for the drilling under such hostile drilling conditions. This technology is characterized by installing a high speed top drive head and a diamond wireline coring system onto a petroleum rotary rig, which has been proven in praxis to be the most cost effective method for continuous coring in deep and hard formation.

Key concepts: Coring, Drilling, Scientific drilling, Petroleum engineering, Borehole, Wireline, Geology, Measurement while drilling

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