Taking the Um7 meandering river complex sandstone reservoir of Bohai Bay C oilfield as an example, the interlayer type is defined according to the interlayer lithology and sedimentary genesis, and the identification m...Taking the Um7 meandering river complex sandstone reservoir of Bohai Bay C oilfield as an example, the interlayer type is defined according to the interlayer lithology and sedimentary genesis, and the identification mode of different types of interlayer is established, and the interlayer comparison of the whole area is carried out by using this mode. The results show that the interlayer can be further defined as the stable distributed interlayer and the randomly distributed interlayer according to the morphology of the interlayer. The distribution characteristics of the two types of interlayers are characterized by the well-to-well comparison method and the data analysis method, and the three-dimensional characterization is carried out. The results more closely reflect the spatial distribution of the interlayer, but also are closer to the underground real situation.展开更多
This note mainly reports a successful preparation of a alumina-pillared layered titanate with a high interlayer spacing through a step-wise exchange process. X-ray diffeaction patterns indicate that the resultant alum...This note mainly reports a successful preparation of a alumina-pillared layered titanate with a high interlayer spacing through a step-wise exchange process. X-ray diffeaction patterns indicate that the resultant alumina-pillared layered titanate has an interlayer spacing of 1.70 nm, which is 0.17 nm higher than that of previously reported,and has a thermal stability over 500℃. The surface area (N2,BET method) of the product is determined to be 72.4 m2.g-1. The N2 adsorption and desorption isotherm of the product demonstrates that the resultant alumina-pillared layered titanate is porous, with both thecropores and mesopores.展开更多
Based on the drilling data of the Upper Ordovician Wufeng Shale and the Lower Silurian Longmaxi Shale in southern Sichuan Basin,the construction of matrix pores and the development condition of fractures in a marine o...Based on the drilling data of the Upper Ordovician Wufeng Shale and the Lower Silurian Longmaxi Shale in southern Sichuan Basin,the construction of matrix pores and the development condition of fractures in a marine organic-rich shale are quantitatively evaluated through the establishment of the reservoir petrophysical models and porosity mathematical models.Our studies show that there are four major characteristics of the Longmaxi Shale confirmed by the quantitative characterization:(1)the pore volume of per unit mass is the highest in organic matter,followed in clay minerals,finally in brittle minerals;(2)the porosity of the effective shale reservoir is moderate and equal to that of the Barnett Shale,and the main parts of the shale reservoir spaces are interlayer pores of clay minerals and organic pores;(3)the porosity of the organic-rich shale is closely related to TOC and brittle mineral/clay mineral ratio,and mainly increases with TOC and clay mineral content;(4)fractures are developed in this black shale,and are mainly micro ones and medium-large ones.In the Longmaxi Shale,the fracture density increases from top to bottom,reflecting the characteristics with high brittle mineral content,high Young’s modulus,low Poisson's ratio and high brittleness at its bottom.展开更多
文摘Taking the Um7 meandering river complex sandstone reservoir of Bohai Bay C oilfield as an example, the interlayer type is defined according to the interlayer lithology and sedimentary genesis, and the identification mode of different types of interlayer is established, and the interlayer comparison of the whole area is carried out by using this mode. The results show that the interlayer can be further defined as the stable distributed interlayer and the randomly distributed interlayer according to the morphology of the interlayer. The distribution characteristics of the two types of interlayers are characterized by the well-to-well comparison method and the data analysis method, and the three-dimensional characterization is carried out. The results more closely reflect the spatial distribution of the interlayer, but also are closer to the underground real situation.
文摘This note mainly reports a successful preparation of a alumina-pillared layered titanate with a high interlayer spacing through a step-wise exchange process. X-ray diffeaction patterns indicate that the resultant alumina-pillared layered titanate has an interlayer spacing of 1.70 nm, which is 0.17 nm higher than that of previously reported,and has a thermal stability over 500℃. The surface area (N2,BET method) of the product is determined to be 72.4 m2.g-1. The N2 adsorption and desorption isotherm of the product demonstrates that the resultant alumina-pillared layered titanate is porous, with both thecropores and mesopores.
基金supported by the National Basic Research Program of China(Grant No.2013CB228001)Special Issue of Major National Science and Technology(Grant No.2011ZX05018-001)+1 种基金National Oil and Gas Resources Survey and Evaluation Program(Grant No.2009GYXQ15-01)PetroChina Technology Research Project of Unconventional Oil and Gas Exploration and Development(Grant No.2011A-4801)
文摘Based on the drilling data of the Upper Ordovician Wufeng Shale and the Lower Silurian Longmaxi Shale in southern Sichuan Basin,the construction of matrix pores and the development condition of fractures in a marine organic-rich shale are quantitatively evaluated through the establishment of the reservoir petrophysical models and porosity mathematical models.Our studies show that there are four major characteristics of the Longmaxi Shale confirmed by the quantitative characterization:(1)the pore volume of per unit mass is the highest in organic matter,followed in clay minerals,finally in brittle minerals;(2)the porosity of the effective shale reservoir is moderate and equal to that of the Barnett Shale,and the main parts of the shale reservoir spaces are interlayer pores of clay minerals and organic pores;(3)the porosity of the organic-rich shale is closely related to TOC and brittle mineral/clay mineral ratio,and mainly increases with TOC and clay mineral content;(4)fractures are developed in this black shale,and are mainly micro ones and medium-large ones.In the Longmaxi Shale,the fracture density increases from top to bottom,reflecting the characteristics with high brittle mineral content,high Young’s modulus,low Poisson's ratio and high brittleness at its bottom.
基金Project(2021YFA1401300)supported by the National Key Research and Development Program of ChinaProject(2021RC3021)supported by the Science and Technology Innovation Program of Hunan Province,ChinaProject(2021JJ40780)supported by the Natural Science Foundation of Hunan Province,China。
