The Bozhong Sag is the largest petroliferous sag in the Bohai Bay Basin,and the source rocks of Paleogene Dongying and Shahejie Formations were buried deeply.Most of the drillings were located at the structural high,a...The Bozhong Sag is the largest petroliferous sag in the Bohai Bay Basin,and the source rocks of Paleogene Dongying and Shahejie Formations were buried deeply.Most of the drillings were located at the structural high,and there were few wells that met good quality source rocks,so it is difficult to evaluate the source rocks in the study area precisely by geochemical analysis only.Based on the Rock-Eval pyrolysis,total organic carbon(TOC)testing,the organic matter(OM)abundance of Paleogene source rocks in the southwestern Bozhong Sag were evaluated,including the lower of second member of Dongying Formation(E_(3)d2L),the third member of Dongying Formation(E_(3)d_(3)),the first and second members of Shahejie Formation(E_(2)s_(1+2)),the third member of Shahejie Formation(E_(2)s_(3)).The results indicate that the E_(2)s_(1+2)and E_(2)s_(3)have better hydrocarbon generative potentials with the highest OM abundance,the E_(3)d_(3)are of the second good quality,and the E_(3)d2L have poor to fair hydrocarbon generative potential.Furthermore,the well logs were applied to predict TOC and residual hydrocarbon generation potential(S_(2))based on the sedimentary facies classification,usingΔlogR,generalizedΔlogR,logging multiple linear regression and BP neural network methods.The various methods were compared,and the BP neural network method have relatively better prediction accuracy.Based on the pre-stack simultaneous inversion(P-wave impedance,P-wave velocity and density inversion results)and the post-stack seismic attributes,the three-dimensional(3D)seismic prediction of TOC and S_(2)was carried out.The results show that the seismic near well prediction results of TOC and S_(2)based on seismic multi-attributes analysis correspond well with the results of well logging methods,and the plane prediction results are identical with the sedimentary facies map in the study area.The TOC and S_(2)values of E_(2)s_(1+2)and E_(2)s_(3)are higher than those in E_(3)d_(3)and E_(3)d_(2)L,basically consistent with the geochemical analysis results.This method makes up the deficiency of geochemical methods,establishing the connection between geophysical information and geochemical data,and it is helpful to the 3D quantitative prediction and the evaluation of high-quality source rocks in the areas where the drillings are limited.展开更多
为了构建新型弓形虫DNA疫苗并鉴定,试验以弓形虫SAG1作为疫苗候选抗原,融合小鼠树突状细胞(DC)表面分子DEC-205的单链抗体(single chain antibody fragment against DEC-205,scFv DEC-205),构建可表达弓形虫速殖子的表面抗原SAG1和scFvD...为了构建新型弓形虫DNA疫苗并鉴定,试验以弓形虫SAG1作为疫苗候选抗原,融合小鼠树突状细胞(DC)表面分子DEC-205的单链抗体(single chain antibody fragment against DEC-205,scFv DEC-205),构建可表达弓形虫速殖子的表面抗原SAG1和scFvDEC-205-SAG1的DNA质粒,对该质粒进行酶切鉴定,同时用该质粒对真核细胞进行转染,对目标蛋白的表达情况进行鉴定。结果表明:经电泳、双酶切及测序证实目的基因大小与实际相符,重组质粒pVAX1-scFvDEC205-SAG1构建成功;经Western-blot和细胞免疫荧光试验证实重组质粒pVAX1-scFvDEC205-SAG1可成功表达目的蛋白。说明成功构建重组DNA疫苗pVAX1-scFvDEC205-SAG1并在体外表达。展开更多
文摘The Bozhong Sag is the largest petroliferous sag in the Bohai Bay Basin,and the source rocks of Paleogene Dongying and Shahejie Formations were buried deeply.Most of the drillings were located at the structural high,and there were few wells that met good quality source rocks,so it is difficult to evaluate the source rocks in the study area precisely by geochemical analysis only.Based on the Rock-Eval pyrolysis,total organic carbon(TOC)testing,the organic matter(OM)abundance of Paleogene source rocks in the southwestern Bozhong Sag were evaluated,including the lower of second member of Dongying Formation(E_(3)d2L),the third member of Dongying Formation(E_(3)d_(3)),the first and second members of Shahejie Formation(E_(2)s_(1+2)),the third member of Shahejie Formation(E_(2)s_(3)).The results indicate that the E_(2)s_(1+2)and E_(2)s_(3)have better hydrocarbon generative potentials with the highest OM abundance,the E_(3)d_(3)are of the second good quality,and the E_(3)d2L have poor to fair hydrocarbon generative potential.Furthermore,the well logs were applied to predict TOC and residual hydrocarbon generation potential(S_(2))based on the sedimentary facies classification,usingΔlogR,generalizedΔlogR,logging multiple linear regression and BP neural network methods.The various methods were compared,and the BP neural network method have relatively better prediction accuracy.Based on the pre-stack simultaneous inversion(P-wave impedance,P-wave velocity and density inversion results)and the post-stack seismic attributes,the three-dimensional(3D)seismic prediction of TOC and S_(2)was carried out.The results show that the seismic near well prediction results of TOC and S_(2)based on seismic multi-attributes analysis correspond well with the results of well logging methods,and the plane prediction results are identical with the sedimentary facies map in the study area.The TOC and S_(2)values of E_(2)s_(1+2)and E_(2)s_(3)are higher than those in E_(3)d_(3)and E_(3)d_(2)L,basically consistent with the geochemical analysis results.This method makes up the deficiency of geochemical methods,establishing the connection between geophysical information and geochemical data,and it is helpful to the 3D quantitative prediction and the evaluation of high-quality source rocks in the areas where the drillings are limited.
文摘为了构建新型弓形虫DNA疫苗并鉴定,试验以弓形虫SAG1作为疫苗候选抗原,融合小鼠树突状细胞(DC)表面分子DEC-205的单链抗体(single chain antibody fragment against DEC-205,scFv DEC-205),构建可表达弓形虫速殖子的表面抗原SAG1和scFvDEC-205-SAG1的DNA质粒,对该质粒进行酶切鉴定,同时用该质粒对真核细胞进行转染,对目标蛋白的表达情况进行鉴定。结果表明:经电泳、双酶切及测序证实目的基因大小与实际相符,重组质粒pVAX1-scFvDEC205-SAG1构建成功;经Western-blot和细胞免疫荧光试验证实重组质粒pVAX1-scFvDEC205-SAG1可成功表达目的蛋白。说明成功构建重组DNA疫苗pVAX1-scFvDEC205-SAG1并在体外表达。
