The Ordos Basin is the largest continental multi-energy mineral basin in China,which is rich in coal,oil and gas,and uranium resources.The exploitation of mineral resources is closely related to reservoir water.The ch...The Ordos Basin is the largest continental multi-energy mineral basin in China,which is rich in coal,oil and gas,and uranium resources.The exploitation of mineral resources is closely related to reservoir water.The chemical properties of reservoir water are very important for reservoir evaluation and are significant indicators of the sealing of reservoir oil and gas resources.Therefore,the caprock of the Chang 6 reservoir in the Yanchang Formation was evaluated.The authors tested and analyzed the chemical characteristics of water samples selected from 30 wells in the Chang 6 reservoir of Ansai Oilfield in the Ordos Basin.The results show that the Chang 6 reservoir water in Ansai Oilfield is dominated by calcium-chloride water type with a sodium chloride coefficient of generally less than 0.5.The chloride magnesium coefficients are between 33.7 and 925.5,most of which are greater than 200.The desulfurization coefficients range from 0.21 to 13.4,with an average of 2.227.The carbonate balance coefficients are mainly concentrated below 0.01,with an average of 0.008.The calcium and magnesium coefficients are between 0.08 and 0.003,with an average of 0.01.Combined with the characteristics of the four-corner layout of the reservoir water,the above results show that the graphics are basically consistent.The study indicates that the Chang 6 reservoir in Ansai Oilfield in the Ordos Basin is a favorable block for oil and gas storage with good sealing properties,great preservation conditions of oil and gas,and high pore connectivity.展开更多
BACKGROUND Congenital bronchobiliary fistula is a rare developmental abnormality with an abnormal fistula between the respiratory system and biliary tract. The aim of this report is to analyze and summarize the clinic...BACKGROUND Congenital bronchobiliary fistula is a rare developmental abnormality with an abnormal fistula between the respiratory system and biliary tract. The aim of this report is to analyze and summarize the clinical features and experience of diagnosing and treating congenital bronchobiliary fistula(CBBF) occurring in the neonatal period.CASE SUMMARY The onset of symptoms was 3 d after birth in our patient with progressive cyanosis and respiratory distress, and a large amount of green fluid was noticed in her respiratory secretion. We performed computed tomography(CT),fiberoptic bronchoscopy, and cholangiography to make a diagnosis, as well as fistulography with a bronchoscope for the first time. These examinations provided us with valuable images to make a correct diagnosis. The fistula was dissected and removed with excellent results. Surgical removal of the fistula was successful, and the baby recovered well and was discharged. She has been followed for 4 mo without any signs of discomfort.CONCLUSION The main symptom of CBBF is bile-like sputum. CT, bronchoscopy,fistulography, and intraoperative cholangiography can provide important evidence for diagnosis. Surgical resection of the fistula is the first choice of treatment.展开更多
基金supported by the Jiangsu Natural Science Foundation project(SBK2021045820)the Chongqing Natural Science Foundation general Project(cstc2021jcyj-msxmX0624)+1 种基金the Graduate Innovation Program of China University of Mining and Technology(2022WLKXJ002)the Postgraduate Research&Practice Innovation Program of Jiangsu Province(KYCX22_2600).
文摘The Ordos Basin is the largest continental multi-energy mineral basin in China,which is rich in coal,oil and gas,and uranium resources.The exploitation of mineral resources is closely related to reservoir water.The chemical properties of reservoir water are very important for reservoir evaluation and are significant indicators of the sealing of reservoir oil and gas resources.Therefore,the caprock of the Chang 6 reservoir in the Yanchang Formation was evaluated.The authors tested and analyzed the chemical characteristics of water samples selected from 30 wells in the Chang 6 reservoir of Ansai Oilfield in the Ordos Basin.The results show that the Chang 6 reservoir water in Ansai Oilfield is dominated by calcium-chloride water type with a sodium chloride coefficient of generally less than 0.5.The chloride magnesium coefficients are between 33.7 and 925.5,most of which are greater than 200.The desulfurization coefficients range from 0.21 to 13.4,with an average of 2.227.The carbonate balance coefficients are mainly concentrated below 0.01,with an average of 0.008.The calcium and magnesium coefficients are between 0.08 and 0.003,with an average of 0.01.Combined with the characteristics of the four-corner layout of the reservoir water,the above results show that the graphics are basically consistent.The study indicates that the Chang 6 reservoir in Ansai Oilfield in the Ordos Basin is a favorable block for oil and gas storage with good sealing properties,great preservation conditions of oil and gas,and high pore connectivity.
文摘BACKGROUND Congenital bronchobiliary fistula is a rare developmental abnormality with an abnormal fistula between the respiratory system and biliary tract. The aim of this report is to analyze and summarize the clinical features and experience of diagnosing and treating congenital bronchobiliary fistula(CBBF) occurring in the neonatal period.CASE SUMMARY The onset of symptoms was 3 d after birth in our patient with progressive cyanosis and respiratory distress, and a large amount of green fluid was noticed in her respiratory secretion. We performed computed tomography(CT),fiberoptic bronchoscopy, and cholangiography to make a diagnosis, as well as fistulography with a bronchoscope for the first time. These examinations provided us with valuable images to make a correct diagnosis. The fistula was dissected and removed with excellent results. Surgical removal of the fistula was successful, and the baby recovered well and was discharged. She has been followed for 4 mo without any signs of discomfort.CONCLUSION The main symptom of CBBF is bile-like sputum. CT, bronchoscopy,fistulography, and intraoperative cholangiography can provide important evidence for diagnosis. Surgical resection of the fistula is the first choice of treatment.
