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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0458517 (1983-01-17) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 271 인용 특허 : 5 |
A process for recovering heavy hydrocarbonaceous oil in situ is disclosed. After a communication path is established between injection and production wells, a hot viscous fluid at least 20% of which is produced hydrocarbonaceous oil from the production well is circulated between the wells providing
A process for recovering heavy hydrocarbonaceous oil in situ is disclosed. After a communication path is established between injection and production wells, a hot viscous fluid at least 20% of which is produced hydrocarbonaceous oil from the production well is circulated between the wells providing high sweep efficiency and good recovery of oil in place. In a preferred embodiment, the fluid comprises recirculated bitumen from the production well, steam, and small amounts of inert gas and emulsified water. The final stage is a recovery by conventional means.
A method for improving the recovery of viscous hydrocarbonaceous oil from a subterranean formation penetrated by at least one injection well and at least one production well, said wells being in fluid communication with said formation, comprising: (a) establishing a heated communication path between
A method for improving the recovery of viscous hydrocarbonaceous oil from a subterranean formation penetrated by at least one injection well and at least one production well, said wells being in fluid communication with said formation, comprising: (a) establishing a heated communication path between said injection and production wells, in a communication development step, (b) injecting heated fluid having a viscosity of at least one centipoise at 200°C. into said injection well, in a recirculation step, until a suitable portion of said subterranean formation is heated, said heated fluid being heated to a temperature from substantially 100°C. to 300°C. before being injected, and (c) recovering produced hydrocarbonaceous oil from said formation, in a recovery step, at least substantially 20% by mass of said heated fluid being viscous hydrocarbonaceous oil produced from said production well.
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