Based on the sheet, scanning electron microscope and high pressure mercury analysis method, this paper takes Jiyuan oilfield-Ma Jia mountain district 4 5 sandstone reservoir as the research object, from the reservoir ...Based on the sheet, scanning electron microscope and high pressure mercury analysis method, this paper takes Jiyuan oilfield-Ma Jia mountain district 4 5 sandstone reservoir as the research object, from the reservoir petrology, pore type and porosity, permeability, the system analyzed the reservoir characteristics and its control factors. The results show that the sandstone in the 4 5 section of Baoziwan-Majiashan area of Jiyuan oilfield is fine in size and high in filling content. The pore types were dominated by intergranular pores and dissolved pores, with a low face rate. The reservoir property is relatively poor, with mean porosity of 11.11% and mean permeability of 1.16 × 10<sup>−</sup><sup>3</sup> µm<sup>2</sup>. In the low porous, low otonic background, the development of relatively high pore hypertonic areas. Compaction and cementation should play a destructive role in reservoir properties, and dissolution should play a positive role in reservoir properties. Compaction adjusts the migration of clay minerals and miscellaneous bases in the original sediment in the study area, greatly reducing the porosity and permeability of the reservoir;the development of the cement cement, carbonate cementation and some quartz secondary compounds reduces the storage space;the dissolution effect, especially the secondary dissolution pores of the reservoir, which obviously improves the properties of the reservoir.展开更多
A summary is given on the activation cross section measurements performed byChina Institute of Atomic Energy（CIAE）,Lanzhou University（LU）,Peking University（PU）and Sichuan University（SU）from 1989 to 1994 for ge...A summary is given on the activation cross section measurements performed byChina Institute of Atomic Energy（CIAE）,Lanzhou University（LU）,Peking University（PU）and Sichuan University（SU）from 1989 to 1994 for generation of long-lived radionuclides of im-portance in fusion reactor technology.The cross sections are measured for the reactions <sup>109</sup>Ag（n,2n）<sup>108</sup>Ag<sup>m</sup>,<sup>151</sup>Eu（n,2n）<sup>150</sup>Eu<sup>m</sup>,<sup>153</sup>Eu（n,2n）<sup>152</sup>Eu<sup>8</sup>,<sup>159</sup>Tb（n,2n）<sup>158</sup>Tb,<sup>179</sup>Hf（n,2n ）<sup>178</sup>Hf<sup>m2</sup>,<sup>182</sup>W（n,n′α）<sup>178</sup>Hf<sup>m2</sup>,<sup>187</sup>Re（n,2n）<sup>186</sup>Re<sup>m</sup> and <sup>193</sup>Ir（n,2n）<sup>192</sup>Ir<sup>m2</sup>at 14 MeV,<sup>109</sup>Ag（n,2n）<sup>108</sup>Ag<sup>m</sup>,<sup>151</sup>Eu（n,2n）<sup>150</sup>Eu<sup>m</sup>,<sup>159</sup>Tb（n,2n）<sup>158</sup>Tb and <sup>179</sup>Hf（n,2n）<sup>178</sup>Hf<sup>m2</sup>at 9.5 and 9.9 MeV,and<sup>98</sup>Mo（n,γ）<sup>199</sup>Mo（β<sup>-</sup>）→<sup>99</sup>Tc,<sup>165</sup>Ho（n.γ）<sup>166</sup>Ho<sup>m</sup> and <sup>151</sup>Eu（n,γ）<sup>152</sup>Eu<sup>8</sup> in the energy range of20～1100 keV.Some of them were calculated by systematic and HFTT code,which was basedon the compound nucleus evaporation and the preequilibrium exciton model.展开更多
The cross section for <sup>108</sup>Cd（n,p）<sup>108</sup>Ag<sup>m</sup> reaction is measured by the activationmethod at an incident neutron energy of 14.6±0.2MeV.The result i...The cross section for <sup>108</sup>Cd（n,p）<sup>108</sup>Ag<sup>m</sup> reaction is measured by the activationmethod at an incident neutron energy of 14.6±0.2MeV.The result is 18.1±3.3mb.展开更多
The cross sections of long-lived radionuclides of importance in fusionreactor technology are measured by activation method for <sup>137</sup>Ba（n,p）<sup>137</sup>Cs,<sup>182</sup>...The cross sections of long-lived radionuclides of importance in fusionreactor technology are measured by activation method for <sup>137</sup>Ba（n,p）<sup>137</sup>Cs,<sup>182</sup>W（n,n’x）<sup>178</sup>Hf<sup>m2</sup> and <sup>193</sup>Ir（n,2n）<sup>192</sup>Ir<sup>m2</sup> reactions at 14 MeV.The neutron fluencesare determined by the cross sections of <sup>93</sup>Nb（n,2n）<sup>92</sup>Nb<sup>m</sup>,<sup>54</sup>Fe（n,x）<sup>51</sup>Cr and<sup>54</sup>Fe（n,p）<sup>54</sup>Mn reactions.The induced gamma ray activities of the irradiated Ba<sub>2</sub>O<sub>3</sub>,Wand Ir samples and their monitor foils are measured by a calibrated Ge（Li）detector oran anti-Compton gamma ray spectrometer.展开更多
文摘Based on the sheet, scanning electron microscope and high pressure mercury analysis method, this paper takes Jiyuan oilfield-Ma Jia mountain district 4 5 sandstone reservoir as the research object, from the reservoir petrology, pore type and porosity, permeability, the system analyzed the reservoir characteristics and its control factors. The results show that the sandstone in the 4 5 section of Baoziwan-Majiashan area of Jiyuan oilfield is fine in size and high in filling content. The pore types were dominated by intergranular pores and dissolved pores, with a low face rate. The reservoir property is relatively poor, with mean porosity of 11.11% and mean permeability of 1.16 × 10<sup>−</sup><sup>3</sup> µm<sup>2</sup>. In the low porous, low otonic background, the development of relatively high pore hypertonic areas. Compaction and cementation should play a destructive role in reservoir properties, and dissolution should play a positive role in reservoir properties. Compaction adjusts the migration of clay minerals and miscellaneous bases in the original sediment in the study area, greatly reducing the porosity and permeability of the reservoir;the development of the cement cement, carbonate cementation and some quartz secondary compounds reduces the storage space;the dissolution effect, especially the secondary dissolution pores of the reservoir, which obviously improves the properties of the reservoir.
基金The project cartied OHt under IAEA Research Agreement No 5060/CF
文摘A summary is given on the activation cross section measurements performed byChina Institute of Atomic Energy（CIAE）,Lanzhou University（LU）,Peking University（PU）and Sichuan University（SU）from 1989 to 1994 for generation of long-lived radionuclides of im-portance in fusion reactor technology.The cross sections are measured for the reactions <sup>109</sup>Ag（n,2n）<sup>108</sup>Ag<sup>m</sup>,<sup>151</sup>Eu（n,2n）<sup>150</sup>Eu<sup>m</sup>,<sup>153</sup>Eu（n,2n）<sup>152</sup>Eu<sup>8</sup>,<sup>159</sup>Tb（n,2n）<sup>158</sup>Tb,<sup>179</sup>Hf（n,2n ）<sup>178</sup>Hf<sup>m2</sup>,<sup>182</sup>W（n,n′α）<sup>178</sup>Hf<sup>m2</sup>,<sup>187</sup>Re（n,2n）<sup>186</sup>Re<sup>m</sup> and <sup>193</sup>Ir（n,2n）<sup>192</sup>Ir<sup>m2</sup>at 14 MeV,<sup>109</sup>Ag（n,2n）<sup>108</sup>Ag<sup>m</sup>,<sup>151</sup>Eu（n,2n）<sup>150</sup>Eu<sup>m</sup>,<sup>159</sup>Tb（n,2n）<sup>158</sup>Tb and <sup>179</sup>Hf（n,2n）<sup>178</sup>Hf<sup>m2</sup>at 9.5 and 9.9 MeV,and<sup>98</sup>Mo（n,γ）<sup>199</sup>Mo（β<sup>-</sup>）→<sup>99</sup>Tc,<sup>165</sup>Ho（n.γ）<sup>166</sup>Ho<sup>m</sup> and <sup>151</sup>Eu（n,γ）<sup>152</sup>Eu<sup>8</sup> in the energy range of20～1100 keV.Some of them were calculated by systematic and HFTT code,which was basedon the compound nucleus evaporation and the preequilibrium exciton model.
文摘The cross section for <sup>108</sup>Cd（n,p）<sup>108</sup>Ag<sup>m</sup> reaction is measured by the activationmethod at an incident neutron energy of 14.6±0.2MeV.The result is 18.1±3.3mb.
基金IAEA project under Research Agreement No.5060/CF.
文摘The cross sections of long-lived radionuclides of importance in fusionreactor technology are measured by activation method for <sup>137</sup>Ba（n,p）<sup>137</sup>Cs,<sup>182</sup>W（n,n’x）<sup>178</sup>Hf<sup>m2</sup> and <sup>193</sup>Ir（n,2n）<sup>192</sup>Ir<sup>m2</sup> reactions at 14 MeV.The neutron fluencesare determined by the cross sections of <sup>93</sup>Nb（n,2n）<sup>92</sup>Nb<sup>m</sup>,<sup>54</sup>Fe（n,x）<sup>51</sup>Cr and<sup>54</sup>Fe（n,p）<sup>54</sup>Mn reactions.The induced gamma ray activities of the irradiated Ba<sub>2</sub>O<sub>3</sub>,Wand Ir samples and their monitor foils are measured by a calibrated Ge（Li）detector oran anti-Compton gamma ray spectrometer.
