Abstract
The environmental conditions for which the digging techniques are to be developed have been set at 3,000 to 5,000 m as depth, 400 degrees C as temperature and 500 kg/cm{sup 2} as pressure. The environmental temperature was set at 250 degrees C as the first phase in the previous year. In this year, the temperature level is increased to 400 degrees C for the feasibility study on technological development. For development of the high-temperature bed digging apparatuses, masts, sub-structures, drawworks, slurry pumps, and pipe addition handling are studied as the problems involved in the rotary table method. Also studied are the related themes, e.g., drill pipes, drill collars, casing pipes, slurry, cementing and instruments to be installed in geothermal wells. For development of the bits, various problems to be solved are studied, including slurry circulation systems, bit diameter and speed of rotation, and bit configurations as those involved in the digging systems; heat-resistant materials, bit tooth forms, hardening of the edges, bearing configurations and cooling mechanisms as those involved in the bit structures; and optimum service conditions and selective use standards for roller cutter and solid bits. Other items studied include structures of the apparatuses for geothermal well mouth, and
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Citation Formats
None.
FY 1975 Report on results of Sunshine Project. Development of techniques of digging high-temperature beds (Feasibility study on digging high-temperature beds); 1975 nendo koon chiso kussaku gijutsu no kaihatsu seika hokokusho. Koon chiso kussaku ni kansuru feasibility study.
Japan: N. p.,
1976.
Web.
None.
FY 1975 Report on results of Sunshine Project. Development of techniques of digging high-temperature beds (Feasibility study on digging high-temperature beds); 1975 nendo koon chiso kussaku gijutsu no kaihatsu seika hokokusho. Koon chiso kussaku ni kansuru feasibility study.
Japan.
None.
1976.
"FY 1975 Report on results of Sunshine Project. Development of techniques of digging high-temperature beds (Feasibility study on digging high-temperature beds); 1975 nendo koon chiso kussaku gijutsu no kaihatsu seika hokokusho. Koon chiso kussaku ni kansuru feasibility study."
Japan.
@misc{etde_20102610,
title = {FY 1975 Report on results of Sunshine Project. Development of techniques of digging high-temperature beds (Feasibility study on digging high-temperature beds); 1975 nendo koon chiso kussaku gijutsu no kaihatsu seika hokokusho. Koon chiso kussaku ni kansuru feasibility study}
author = {None}
abstractNote = {The environmental conditions for which the digging techniques are to be developed have been set at 3,000 to 5,000 m as depth, 400 degrees C as temperature and 500 kg/cm{sup 2} as pressure. The environmental temperature was set at 250 degrees C as the first phase in the previous year. In this year, the temperature level is increased to 400 degrees C for the feasibility study on technological development. For development of the high-temperature bed digging apparatuses, masts, sub-structures, drawworks, slurry pumps, and pipe addition handling are studied as the problems involved in the rotary table method. Also studied are the related themes, e.g., drill pipes, drill collars, casing pipes, slurry, cementing and instruments to be installed in geothermal wells. For development of the bits, various problems to be solved are studied, including slurry circulation systems, bit diameter and speed of rotation, and bit configurations as those involved in the digging systems; heat-resistant materials, bit tooth forms, hardening of the edges, bearing configurations and cooling mechanisms as those involved in the bit structures; and optimum service conditions and selective use standards for roller cutter and solid bits. Other items studied include structures of the apparatuses for geothermal well mouth, and wear of digging tools for the air drilling method. (NEDO)}
place = {Japan}
year = {1976}
month = {Mar}
}
title = {FY 1975 Report on results of Sunshine Project. Development of techniques of digging high-temperature beds (Feasibility study on digging high-temperature beds); 1975 nendo koon chiso kussaku gijutsu no kaihatsu seika hokokusho. Koon chiso kussaku ni kansuru feasibility study}
author = {None}
abstractNote = {The environmental conditions for which the digging techniques are to be developed have been set at 3,000 to 5,000 m as depth, 400 degrees C as temperature and 500 kg/cm{sup 2} as pressure. The environmental temperature was set at 250 degrees C as the first phase in the previous year. In this year, the temperature level is increased to 400 degrees C for the feasibility study on technological development. For development of the high-temperature bed digging apparatuses, masts, sub-structures, drawworks, slurry pumps, and pipe addition handling are studied as the problems involved in the rotary table method. Also studied are the related themes, e.g., drill pipes, drill collars, casing pipes, slurry, cementing and instruments to be installed in geothermal wells. For development of the bits, various problems to be solved are studied, including slurry circulation systems, bit diameter and speed of rotation, and bit configurations as those involved in the digging systems; heat-resistant materials, bit tooth forms, hardening of the edges, bearing configurations and cooling mechanisms as those involved in the bit structures; and optimum service conditions and selective use standards for roller cutter and solid bits. Other items studied include structures of the apparatuses for geothermal well mouth, and wear of digging tools for the air drilling method. (NEDO)}
place = {Japan}
year = {1976}
month = {Mar}
}