DURING the course of hydrocarbon evolution and migration, large quantities of H<sub> </sub>2S are often produced.This process is most familiar to petroleum geologists, and may lead to forming of natural ga...DURING the course of hydrocarbon evolution and migration, large quantities of H<sub> </sub>2S are often produced.This process is most familiar to petroleum geologists, and may lead to forming of natural gas deposits. Themost important H<sub>2</sub>S-forming reactions are bacterial sulfate reduction （BSR）, and thermochemical sulfatereduction （TSR）. Whereas BSR is restricted to relatively low temperature （【100℃） and shallowdepths, TSR becomes important at elevated temperature （】150℃） and greater depth of burial. BecauseH<sub>2</sub>S is highly soluble in water, any groundwater in the vicinity of a TSR-active zone will also become enriched in H<sub>2</sub>S. The central hypothesis of this paper is that hot groundwaters associated with TSR in carbonate terrains acquire the ability to transport gold and other elements （e.g. Ag, Hg, As, Sb, Tl）展开更多
On the basis of the analysis of field thermogeochemical data along abnormal zones of a thermal stream in the Bukhara-Khiva, oil-and-gas region of the Turan (Tegermen, Chagakul, Shimoly Alat, Beshtepa) was succeeded to...On the basis of the analysis of field thermogeochemical data along abnormal zones of a thermal stream in the Bukhara-Khiva, oil-and-gas region of the Turan (Tegermen, Chagakul, Shimoly Alat, Beshtepa) was succeeded to obtain important data on a deep structure of sites. Data of gas-chemical and geothermal observations show about confinedness of abnormal concentration of methane to zones of the increased values of the temperature field the measured values of temperatures (Tegermen Square and others). On geoelectric section mines 2-D of inversion of the MT-field depth of 4000 m are lower, among very high-resistance the chemogenic and carbonate deposits of the Paleozoic is traced the subvertical carrying-out abnormal zone. This zone is identified as the channel of a deep heat and mass transfer with which hydrocarbon (HC) deposits are connected. It is shown that electro-investigation when using a geophysical complex can and has to become “advancing” at exploration by oil and gas.展开更多
文摘DURING the course of hydrocarbon evolution and migration, large quantities of H<sub> </sub>2S are often produced.This process is most familiar to petroleum geologists, and may lead to forming of natural gas deposits. Themost important H<sub>2</sub>S-forming reactions are bacterial sulfate reduction （BSR）, and thermochemical sulfatereduction （TSR）. Whereas BSR is restricted to relatively low temperature （【100℃） and shallowdepths, TSR becomes important at elevated temperature （】150℃） and greater depth of burial. BecauseH<sub>2</sub>S is highly soluble in water, any groundwater in the vicinity of a TSR-active zone will also become enriched in H<sub>2</sub>S. The central hypothesis of this paper is that hot groundwaters associated with TSR in carbonate terrains acquire the ability to transport gold and other elements （e.g. Ag, Hg, As, Sb, Tl）
文摘On the basis of the analysis of field thermogeochemical data along abnormal zones of a thermal stream in the Bukhara-Khiva, oil-and-gas region of the Turan (Tegermen, Chagakul, Shimoly Alat, Beshtepa) was succeeded to obtain important data on a deep structure of sites. Data of gas-chemical and geothermal observations show about confinedness of abnormal concentration of methane to zones of the increased values of the temperature field the measured values of temperatures (Tegermen Square and others). On geoelectric section mines 2-D of inversion of the MT-field depth of 4000 m are lower, among very high-resistance the chemogenic and carbonate deposits of the Paleozoic is traced the subvertical carrying-out abnormal zone. This zone is identified as the channel of a deep heat and mass transfer with which hydrocarbon (HC) deposits are connected. It is shown that electro-investigation when using a geophysical complex can and has to become “advancing” at exploration by oil and gas.
