The paleo-temperature evolution of Sinian reservoir of Anping （安平） 1 well was rebuilt by taking the method of apatite fission track and Easy%Ro model. The result of apatite fission track determines the accurate bu...The paleo-temperature evolution of Sinian reservoir of Anping （安平） 1 well was rebuilt by taking the method of apatite fission track and Easy%Ro model. The result of apatite fission track determines the accurate burial history and overcomes the flaw that the vitrinite reflectance is taken as paleo-temperature indicator simply. The authors used the laser Raman technique to analyze the methane present in the calcite and quartz fluid inclusions of Sinian reservoir, finding that the methane is water soluble gas. The authors also simulated the paleo-pressure of fluid inclusion by using PVTsim software and finally worked out the methane solubility in water.展开更多
The Sinian reservior in Anpingdian （安平店）-Gaoshiti （高石梯） structure, Middle Sichuan （四川） basin, is of great importance to prospect for oil and gas. This article dissects the hydrocarbon accumulation mechan...The Sinian reservior in Anpingdian （安平店）-Gaoshiti （高石梯） structure, Middle Sichuan （四川） basin, is of great importance to prospect for oil and gas. This article dissects the hydrocarbon accumulation mechanism of this area on the basis of comprehensive methods of organic geochemistry, fluid inclusion, modeling of hydrocarbon generation and expulsion from source rocks, and by combining structure evolutions and analyzing the key geologic features of hydrocarbon origin and trap. According to the fluid inclusion homogenization temperature analysis, there exist at least three stages of fluid charging in the Sinian reservoir. From Middle-Late Jurassic to Early Cretaceous, oil cracked to gas gradually owing to high temperature at 200-220℃. The Sinian gas pool was mainly formed at the stage when natural gas in trap was released from water and paleo-gas pools were being adjusted. It was a process in which natural gas dissipated, transferred, and redistributed, and which resulted in the present remnant gas pool in Anpindian-Gaositi tectonic belt. The authors resumed such an evolution process of Sinian reservoir as from paleo-oil pools to paleo-gas pools, and till today＇s adjusted and reconstructed gas pools.展开更多
基金supported by the National Basic Research Program of China (No. 2005CB422106)
文摘The paleo-temperature evolution of Sinian reservoir of Anping （安平） 1 well was rebuilt by taking the method of apatite fission track and Easy%Ro model. The result of apatite fission track determines the accurate burial history and overcomes the flaw that the vitrinite reflectance is taken as paleo-temperature indicator simply. The authors used the laser Raman technique to analyze the methane present in the calcite and quartz fluid inclusions of Sinian reservoir, finding that the methane is water soluble gas. The authors also simulated the paleo-pressure of fluid inclusion by using PVTsim software and finally worked out the methane solubility in water.
基金supported by the National Basic Research Pro-gram of China (No. 2005CB422106)SINOPEC Forward Looking Project (PH08001)
文摘The Sinian reservior in Anpingdian （安平店）-Gaoshiti （高石梯） structure, Middle Sichuan （四川） basin, is of great importance to prospect for oil and gas. This article dissects the hydrocarbon accumulation mechanism of this area on the basis of comprehensive methods of organic geochemistry, fluid inclusion, modeling of hydrocarbon generation and expulsion from source rocks, and by combining structure evolutions and analyzing the key geologic features of hydrocarbon origin and trap. According to the fluid inclusion homogenization temperature analysis, there exist at least three stages of fluid charging in the Sinian reservoir. From Middle-Late Jurassic to Early Cretaceous, oil cracked to gas gradually owing to high temperature at 200-220℃. The Sinian gas pool was mainly formed at the stage when natural gas in trap was released from water and paleo-gas pools were being adjusted. It was a process in which natural gas dissipated, transferred, and redistributed, and which resulted in the present remnant gas pool in Anpindian-Gaositi tectonic belt. The authors resumed such an evolution process of Sinian reservoir as from paleo-oil pools to paleo-gas pools, and till today＇s adjusted and reconstructed gas pools.
