| 摘要 |
The invention relates to a system for modeling an oilfield, which has process facilities and wellsite operatively connected, each wellsite having a wellbore penetrating a subterranean formation for extracting fluid from an underground reservoir. The system includes multiple wellsite simulators, each modeling a portion of the wellsite, at least one non-wellsite simulator, each modeling a portion of a non-wellsite region of the oilfield; and at least one coupling positioned among the wellsite simulators and the non-wellsite simulator. The coupling selectively links the wellsite simulators and the non-wellsite simulator according to a pre-defined configuration for selective communication. |
| 主权项 |
1. A system for modeling an oilfield having at least one process facility and at least one wellsite operatively connected thereto, each of the at least one wellsite having a wellbore penetrating a subterranean formation for extracting fluid from an underground reservoir therein, comprising:
a computer processor; a wellbore simulator, a surface network simulator, and a reservoir simulator executing on the computer processor and configured to model at least a portion of the at least one wellsite of the oilfield, wherein the wellbore simulator, the surface network simulator, and the reservoir simulator are collectively referred to as wellsite simulators; a fast productivity index (PI) coupling established between the reservoir simulator and the wellbore simulator to impose a hydraulic response between them; a process simulator and an economic simulator executing on the computer processor and collectively referred to as non-wellsite simulators; a plurality of general node couplings established between the process simulator, the economics simulator, and the surface network simulator, wherein the oilfield is modeled by communicating between the wellsite simulators and the non-wellsite simulators using at least the plurality of general node couplings and by:
querying, using the fast PI coupling, the reservoir simulator for a well linear inflow performance relationship (IPR) curve at a current operating point;passing, using the fast PI coupling, the well linear IPR curve as a boundary condition to the surface network simulator to calculate a network pressure and a flow rate; andsetting, using the fast PI coupling, the flow rate calculated by the surface network simulator in the reservoir simulator, and wherein the economics simulator models costs of the oilfield at every time step of modeling at least the portion of the at least one wellsite and the at least one process facility using the wellsite and non-wellsite simulators. |
