ANALYZING AN OILFIELD NETWORK FOR OILFIELD PRODUCTION

• US 20100049490A1
• Filed: 02/19/2009
• Published: 02/25/2010
• Est. Priority Date: 03/07/2008
• Status: Active Grant

• Current Assignee: Schlumberger Technology Corporation (Schlumberger NV)
• Original Assignee: Schlumberger Technology Corporation (Schlumberger NV)
• Inventors: Bennett, James, Ferramosca, Adrian, Watters, Colin, Lucas-Clements, Daniel
• Granted Patent: US 8,073,665 B2
• Time in Patent Office: Days
• US Class Current: 703/10
• CPC Class Codes: E21B 43/00 Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells applicable only to water E03B

Abstract

A method for performing an analysis of an oilfield network. The oilfield network includes multiple wellsites. The method includes collecting oilfield data from the oilfield network, modeling a first wellsite using the oilfield data to create a first production model of the first wellsite, and modeling a second wellsite using the oilfield data to create a second production model of the second wellsite. The method further includes modeling a sub-network of the oilfield network to create a third production model of the sub-network. The modeling of the sub-network includes identifying a junction of a branch associated with the first wellsite and a branch associated with the second wellsite. A fourth production model is created for the junction by combining the first production model with the second production model. The production model of the sub-network is created using the fourth production model of the junction. The method further includes solving the oilfield network based on the third production model to create a production result, and storing the production result.

Claims

1. A method for performing an analysis of an oilfield network comprising:

collecting oilfield data from the oilfield network, wherein the oilfield network comprises a plurality of wellsites;

modeling a first wellsite of the plurality of wellsites using the oilfield data to create a first production model of the first wellsite;

modeling a second wellsite of the plurality of wellsites using the oilfield data to create a second production model of the second wellsite,

modeling a sub-network of the oilfield network to create a third production model of the sub-network, wherein modeling the sub-network comprises;

identifying a junction of a branch associated with the first wellsite and a branch associated with the second wellsite;

combining the first production model with the second production model to create a fourth production model for the junction, wherein the third production model is created using the fourth production model;

solving the oilfield network based on the third production model to create a production result; and

storing the production result.

2. The method of claim 1, wherein solving the oilfield network is performed using a Wegstein solver.

3. The method of claim 1, wherein solving the oilfield network is performed using a Newton solver.

4. The method of claim 1, wherein modeling the first wellsite comprises:

generating a production function for a first value of an operational condition;

generating a production function for a second value of the operational condition; and

joining the production function for first value with the production function for the second value into the first production model.

5. The method of claim 1, further comprising:

using the production result in an oilfield application.

6. The method of claim 1, further comprising:

defining the oilfield network using the production result to obtain a defined oilfield network;

implementing the defined oilfield network to obtain an implemented oilfield network; and

monitoring the implemented oilfield network.

7. A system for oilfield network analysis comprising:

an oilfield transceiver for obtaining oilfield data for an oilfield;

an oilfield modeler executing on a processor for modeling at least a portion of the oilfield using the oilfield data;

an oilfield analyzer executing on the processor comprising;

an offline tool configured to model the portion of the oilfield to create a first production model; and

a network solver configured to solve the portion of the oilfield based on the first production model to create a production result; and

a data repository to store the production result.

8. The system of claim 7, wherein the network solver comprises a Wegstein solver for solving the oilfield network.

9. The system of claim 7, wherein the network solver comprises a Newton solver for solving the oilfield network.

10. The system of claim 7, wherein the offline tool comprises a single branch solver, wherein the single branch solver is configured to model at least one of a plurality of wellsites in the portion of the oilfield to create a second production model, and wherein the offline tool models the portion of the oilfield using the second production model to create the first production model.

11. The system of claim 7, wherein the oilfield production tool is operatively connected to an oilfield application.

12. The system of claim 7, wherein the oilfield production tool is operatively connected with a plug-in.

13. The system of claim 7, wherein the oilfield analyzer further comprises at least one selected from a group consisting of a fluid modeler, a flow modeler, and an equipment modeler.

14. The system of claim 7, wherein the oilfield modeler comprises at least one selected from a group consisting of a wellbore modeler and a network modeler.

15. The system of claim 7, wherein the oilfield analyzer further comprises a production analyzer.

16. The system of claim 7, further comprising a report generator configured to generate a report of the production result.

17. A computer readable medium comprising computer readable program code embodied therein for causing a computer system to:

collect oilfield data for an oilfield network comprising a plurality of wellsites;

model a first wellsite of the plurality of wellsites using the oilfield data to create a first production model of the first wellsite, wherein modeling the first wellsite comprises;

generating a production function for a first value of an operational condition;

generating a production function for a second value of the operational condition; and

joining the production function for first value with the production function for the second value into the first production model

model a sub-network of the oilfield network using the first production model to create a second production model of the sub-network; and

solve the oilfield network based on the second production model to create a production result; and

display the production result.

18. The computer readable medium of claim 17, wherein the computer readable program code further causes the computer system to:

model a second wellsite of the plurality of wellsites using the oilfield data to create a third production model of the first wellsite

wherein modeling the sub-network comprises;

identifying a junction of a branch associated with the first wellsite and a branch associated with the second wellsite; and

combining the first production model with the third production model to create a fourth production model for the junction, wherein creating the second production model uses the fourth production model.

19. The computer readable medium of claim 17, wherein the computer readable program code further causes the computer system to:

defining the oilfield network using the production result to obtain a defined oilfield network, wherein the defined oilfield network is implemented the defined oilfield network to obtain an implemented oilfield network; and

monitoring the implemented oilfield network.

20. The computer readable medium of claim 17, wherein solving the oilfield network is performed using at least one selected from a group consisting of a Wegstein solver and a Newton solver.