Submersible pump control

Patent metadata

Field	Value
Publication number	US-9057256-B2
Application number	US-201213347673-A
Country	US
Kind code	B2
Filing date	Jan 10, 2012
Priority date	Jan 10, 2012
Publication date	Jun 16, 2015
Grant date	Jun 16, 2015

Abstract

A system can include an interface to receive sensed data and economic data; a production control framework that includes a module for modeling motor efficiency of an electric submersible pump, a module for modeling gas composition of a fluid being pumped by an electric submersible pump, a module for modeling solid dynamics in a fluid being pumped by an electric submersible pump, a module to update one or more of the modules for modeling in response to receipt of data via the interface; and an interface to output control commands to a controller for an electric submersible pump based at least in part on data received by the interface and analyzed by the production control framework. Various other apparatuses, systems, methods, etc., are also disclosed.

First claim

The invention claimed is:

1. A system comprising:
a first interface to receive sensed data and economic data;
a production control framework that comprises
a module for modeling motor efficiency of an electric submersible pump wherein the module for modeling motor efficiency is stored in a memory,
a module for modeling gas composition of a fluid being pumped by an electric submersible pump wherein the module for modeling gas composition is stored in a memory, and
a module for modeling solid dynamics in a fluid being pumped by an electric submersible pump, wherein the module for modeling solid dynamics is stored in a memory; and
a module to update one or more of the modules for modeling in response to receipt of data via the first interface, wherein the module to update is stored in a memory; and

a second interface to output control commands to a controller for an electric submersible pump based at least in part on data received by the first interface and analyzed via modeling by the production control framework.

2. The system of claim 1 wherein the module for modeling motor efficiency comprises a pump performance curve.

3. The system of claim 1 wherein the module for modeling gas composition comprises a phase envelope model that comprises a bubblepoint line.

4. The system of claim 1 wherein the module for modeling solid dynamics comprises a sand limit model.

5. The system of claim 1 wherein the module for modeling solid dynamics comprises an asphaltene envelope model or a wax envelope model.

6. The system of claim 1 wherein the module for modeling motor efficiency comprises an algorithm to adjust voltage while maintaining a constant frequency.

7. The system of claim 6 wherein the algorithm to adjust voltage while maintaining a constant frequency achieves a minimum current draw by a motor of an electric submersible pump.

8. The system of claim 1 wherein the economic data comprises real time market data.

9. The system of claim 8 wherein the real time market data comprises oil price data for a type of oil being pumped by an electrical submersible pump controllable by the interface to output control commands.

10. The system of claim 8 wherein the real time market data comprises electricity price data for powering an electrical submersible pump controllable by the interface to output control commands.

11. The system of claim 1 wherein the controller to control an electric submersible pump comprises a variable speed drive controller.

12. The system of claim 1 wherein the production control framework comprises an enhanced oil recovery module for modeling injection of steam into a geologic environment to assist production of oil from the geologic environment by an electric submersible pump, wherein the enhanced oil recovery module is stored in a memory.

13. The system of claim 1 wherein the production control framework comprises a chemical injection module for modeling injection of one or more chemicals that interact with asphaltenes or wax, wherein the chemical injection module is stored in a memory.

14. The system of claim 1 further comprising an electric submersible pump that comprises one or more sensors.

Assignees

• Ige Adunola
• Ilochonwu Obinna
• Watson Arthur I
• Harris Grant T
• Roberge Ian
• Schlumberger Technology Corp

Inventors

• Ige Adunola
• Ilochonwu Obinna
• Watson Arthur I
• Harris Grant T
• Roberge Ian

Classifications

• E21B43/128 Primary

  Adaptation of pump systems with down-hole electric drives · CPC title

• G05B13/04

  involving the use of models or simulators · CPC title

• G05B17/02

  electric · CPC title

• G06Q10/067

  Enterprise or organisation modelling · CPC title

• G05D7/0676 Primary

  by action on flow sources (G05D7/0688, G05D7/0694 take precedence) · CPC title