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US 12,590,519 B2Granted
Method and system for updating a reservoir simulation model based on a well productivity index
AssigneeSaudi Arabian Oil Company
InventorBabatope Kayode
Life of this patent
Estimating the term…
Abstract
A method comprises measuring a pressure at a plurality of times and a measured flow rate in a well. A measured productivity index (PI) is determined based, at least in part, on the measured flow rate and the pressure at the plurality of times. A flow rate at a second time is simulated, and a fluid pressure at the second time and a third time is simulated. A simulated PI is simulated based, at least in part, on the flow rate at the second time, and the fluid pressure at the second time and at the third time. An updated reservoir simulation model is generated by updating at least one parameter of the reservoir simulation model based, at least in part, on a difference between the measured PI and the simulated PI.
Claims11
A method, comprising:
- measuring, using a downhole pressure sensor, a pressure at a plurality of times in a well penetrating a hydrocarbon reservoir;
- measuring, using a flow meter, a measured flow rate in the well;
- determining a measured productivity index (PI) for the well based, at least in part, on the measured flow rate and the pressure at the plurality of times;
- generating, using a reservoir modeler, a reservoir simulation model comprising a discretized representation of a spatial distribution of a permeability of the hydrocarbon reservoir, the reservoir simulation model configured to simulate a fluid flow rate from the hydrocarbon reservoir;
- obtaining, from the reservoir modeler, a fluid pressure distribution at a first time, wherein the fluid pressure distribution represents fluid pressure throughout at least a portion of the hydrocarbon reservoir;
- simulating a flow rate at a second time, a first fluid pressure at the second time and a second fluid pressure at a third time using a reservoir simulator based on the reservoir simulation model and the fluid pressure distribution at the first time, wherein the second time is later than the first time and the third time is later than the second time;
- simulating a simulated PI for the well based, at least in part, on a quotient of the flow rate at the second time and a difference between the first fluid pressure at the second time and the second fluid pressure at the third time;
- generating an updated reservoir simulation model by updating at least one parameter of the reservoir simulation model based, at least in part, on a difference between the measured PI and the simulated PI;
- simulating the fluid pressure distribution at a fourth time using the updated reservoir simulation model;
- identifying a location for drilling an infill well based, at least in part, on the fluid pressure distribution at the fourth time;
- planning a wellbore path to intersect the location, and
- drilling the infill well guided by the wellbore path using a drilling system.
9 more elements
A non-transitory computer-readable memory comprising computer-executable instructions stored thereon that, when executed on a processor, cause the processor to perform:
- receiving a pressure measured using a downhole pressure sensor at a plurality of times in a well penetrating a hydrocarbon reservoir;
- receiving a measured flow rate in the well, the measured flow rate measured using a flow meter;
- determining a measured productivity index (PI) the well based, at least in part, on the measured flow rate and the pressure at the plurality of times;
- generating, using a reservoir modeler, a reservoir simulation model comprising a discretized representation of a spatial distribution of a permeability of the hydrocarbon reservoir, the reservoir simulation model configured to simulate a fluid flow rate from the hydrocarbon reservoir;
- obtaining, from the reservoir modeler, a fluid pressure distribution at a first time, wherein the fluid pressure distribution represents fluid pressure throughout at least a portion of the hydrocarbon reservoir;
- simulating a flow rate at a second time, a first fluid pressure at the second time and a second fluid pressure at a third time using a reservoir simulator based on the reservoir simulation model and the fluid pressure distribution at the first time, wherein the second time is later than the first time and the third time is later than the second time;
- simulating a simulated PI for the well based, at least in part, on a quotient of the flow rate at the second time, and a difference between the first fluid pressure at the second time and the second fluid pressure at the third time;
- generating an updated reservoir simulation model by updating at least one parameter of the reservoir simulation model based on a difference between the measured PI and the simulated PI;
- simulating the fluid pressure distribution at a fourth time using the updated reservoir simulation model, and
- identifying a location for drilling an infill well based, at least in part, on the fluid pressure distribution at the fourth time.
7 more elements
A system, comprising:
- a well penetrating a hydrocarbon reservoir equipped with a flow meter and a downhole pressure sensor, wherein the flow meter is configured to measure a measured flow rate in the well and the downhole pressure sensor is configured to measure a downhole pressure at a plurality of times in the well;
- a reservoir simulator, configured to:
- determine a measured productivity index (PI) for the well based, at least in part, on the measured flow rate and the downhole pressure,
- generate, using a reservoir modeler, a reservoir simulation model comprising a discretized representation of a spatial distribution of a permeability of the hydrocarbon reservoir, the reservoir simulation model configured to simulate a fluid flow rate from the hydrocarbon reservoir,
- obtain, from the reservoir modeler, a fluid pressure distribution at a first time,
- simulate, using the reservoir simulation model, a flow rate at a second time, a first fluid pressure at the second time and a second fluid pressure at a third time, wherein the second time is later than the first time and the third time is later than the second time,
- simulate a simulated PI for the well based, at least in part, on a quotient of the flow rate at the second time and a difference between the first fluid pressure at the second time and the second fluid pressure at the third time;
- generate an updated reservoir simulation model by updating at least one parameter of the reservoir simulation model based on a difference between the measured PI and the simulated PI;
- and
- simulate the fluid pressure distribution at a fourth time using the updated reservoir simulation model;
- a well planning system configured to:
- identify a location of hydrocarbon based, at least in part, on the fluid pressure distribution at the fourth time;
- and
- plan a wellbore path to intersect the location;
- and
- a drilling system configured to drill a well based, at least in part, on the wellbore path.
13 more elements
Dependencies are inferred from the claim text.