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A platform for research: civil engineering, architecture and urbanism
Low-permeability artificial rock core and preparation method thereof
The invention relates to the technical field of oil reservoir core preparation, in particular to a low-permeability artificial core and a preparation method thereof.The low-permeability artificial core is prepared from 100 parts of quartz sand, 3-15 parts of montmorillonite, 5-20 parts of Na2CO3 powder, 5-15 parts of silica fume, 3-8 parts of feldspar sand, 2-5 parts of dolomite powder, 1-3 parts of kieselguhr, 0.5-2 parts of mineral enhancer and 1-3 parts of silica sol; according to the method, the ultralow-permeability rock core with the permeability being smaller than 1mD and the porosity being smaller than 5% can be prepared, and the low-permeability requirement which is difficult to meet by an existing artificial rock core is met; the prepared low-permeability rock core can be widely applied to research work of oil reservoir seepage mechanism, oil increasing mechanism, oil reservoir development and the like, and the problem of scarcity of the actual oil reservoir rock core is solved.
本发明涉及油藏岩心制备技术领域，尤其涉及一种低渗透人造岩心及其制备方法，包括以下份数的原料：100份石英砂、3～15份蒙脱石、5～20份Na2CO3粉末、5～15份硅灰、3～8份长石砂、2～5份白云石粉、1～3份硅藻土、0.5～2份矿物质增强剂、1～3份硅溶胶；本发明可以制备出渗透率小于1mD、孔隙度小于5%的超低渗透岩心,填补了现有人造岩心难以满足的低渗需求；制备的低渗岩心可广泛应用于油藏渗流机理、增油机理、油藏开发等研究工作,解决了实际油藏岩心稀缺的难题。
Low-permeability artificial rock core and preparation method thereof
The invention relates to the technical field of oil reservoir core preparation, in particular to a low-permeability artificial core and a preparation method thereof.The low-permeability artificial core is prepared from 100 parts of quartz sand, 3-15 parts of montmorillonite, 5-20 parts of Na2CO3 powder, 5-15 parts of silica fume, 3-8 parts of feldspar sand, 2-5 parts of dolomite powder, 1-3 parts of kieselguhr, 0.5-2 parts of mineral enhancer and 1-3 parts of silica sol; according to the method, the ultralow-permeability rock core with the permeability being smaller than 1mD and the porosity being smaller than 5% can be prepared, and the low-permeability requirement which is difficult to meet by an existing artificial rock core is met; the prepared low-permeability rock core can be widely applied to research work of oil reservoir seepage mechanism, oil increasing mechanism, oil reservoir development and the like, and the problem of scarcity of the actual oil reservoir rock core is solved.
本发明涉及油藏岩心制备技术领域，尤其涉及一种低渗透人造岩心及其制备方法，包括以下份数的原料：100份石英砂、3～15份蒙脱石、5～20份Na2CO3粉末、5～15份硅灰、3～8份长石砂、2～5份白云石粉、1～3份硅藻土、0.5～2份矿物质增强剂、1～3份硅溶胶；本发明可以制备出渗透率小于1mD、孔隙度小于5%的超低渗透岩心,填补了现有人造岩心难以满足的低渗需求；制备的低渗岩心可广泛应用于油藏渗流机理、增油机理、油藏开发等研究工作,解决了实际油藏岩心稀缺的难题。
Low-permeability artificial rock core and preparation method thereof
一种低渗透人造岩心及其制备方法
SONG DONGJIANG (author) / DU HUAJUN (author) / LIU LIANGGUANG (author) / SUN QIHAI (author)
2024-03-15
Patent
Electronic Resource
Chinese
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