Downhole sensor systems and methods thereof

• US 8,925,379 B2
• Filed: 02/12/2013
• Issued: 01/06/2015
• Est. Priority Date: 04/10/2009
• Status: Active Grant

• Current Assignee: Schlumberger Technology Corporation (SLB)
• Original Assignee: Schlumberger Technology Corporation (SLB)
• Inventors: Yamate, Tsutomu, Terabayashi, Toru, Vasques, Ricardo, Kanayama, Kazumasa, Hosoda, Yuji, Briquet, Stephane
• Primary Examiner(s): FITZGERALD, JOHN P
• Application Number:
  US13/764,787
• Publication Number:
  US 20130145837A1
• Time in Patent Office: 693 Days
• Field of Search: 731/521.8, 7315223-15228
• US Class Current: 73/152.18
• CPC Class Codes: E21B 49/00 Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
• CPC Class Codes: E21B 49/08 Obtaining fluid samples or testing fluids, in boreholes or wells

Abstract

A sensor module for a sensing apparatus configured for operation downhole, within a borehole. The sensor module comprises a sensor array having a plurality of sensors to sense selected formation parameters and a control system for selective and independent operation of each sensor of the sensor array. Each sensor of the sensor array is configured or designed as a discrete sensor unit for individual and independent communication and control. Each sensor of the sensor array may have an associated electronics module that provides standardized electronic connectivity with the control system.

Claims

1. A downhole fluid characterization system configured for operation downhole, within a borehole, comprising:

a fluid sampling and analysis module, the fluid sampling and analysis module comprising;

a housing;

a flowline in the housing for fluids withdrawn from a formation to flow through the fluid sampling and analysis module downhole, within a borehole, the flowline having a first end for the fluids to enter and a second end for the fluids to exit the fluid sampling and analysis module;

a sensor array having a plurality of sensors arranged in fluid communication with the flowline to sense selected formation parameters; and

a control system configured or designed for selective and independent operation of each sensor of the sensor array, wherein

each sensor of the sensor array has an associated electronics module that provides standardized electronic connectivity with the control system.

2. The downhole fluid characterization system according to claim 1, wherein each sensor of the sensor array is interchangeable and replaceable.

3. The downhole fluid characterization system according to claim 1, wherein each sensor of the sensor array is interconnected with at least one other sensor of the sensor array.

4. The downhole fluid characterization system according to claim 1, wherein the same electronics module is associated with each sensor of the sensor array.

5. The downhole fluid characterization system according to claim 1, wherein each sensor of the sensor array is arranged in a corresponding sensor port so that each sensor is in fluid communication with the flowline.

6. The downhole fluid characterization system according to claim 5, wherein each sensor of the sensor array is accessible from outside the housing.

7. The downhole fluid characterization system according to claim 1, wherein each sensor of the sensor array includes a section of the flowline and an electrical connector, wherein the plurality of sensors are arranged linearly such that the flowline section and electrical connector of each sensor is connected with a corresponding flowline section and electrical connector of at least one other sensor of the sensor array.

8. The downhole fluid characterization system according to claim 7, wherein each sensor of the sensor array is tubular in shape and the plurality of sensors have the same outer diameter.

9. The downhole fluid characterization system according to claim 1, wherein the control system is configured or designed to communicate with a surface system for control and communication of each sensor of the sensor array.

10. The downhole fluid characterization system according to claim 9, wherein the control system is configured or designed for data telemetry with the surface system for control and configuration of each sensor of the sensor array.

11. The downhole fluid characterization system according to claim 9, wherein the control system is configured or designed to acquire sensor data from each sensor of the sensor array.

12. The downhole fluid characterization system according to claim 9, wherein the control system comprises a plurality of sensor control systems, each sensor control system being integrated with a corresponding sensor of the plurality of sensors.

13. The downhole fluid characterization system according to claim 9, wherein the control system is configured or designed to provide the surface system with the location and identity of each sensor of the sensor array.

14. The downhole fluid characterization system according to claim 13, wherein the control system automatically provides the surface system with the location and identity of each sensor of the sensor array based on plug and play architecture.

15. A method of downhole characterization of formation fluids utilizing a downhole tool comprising:

deploying a tool downhole for sampling and characterizing formation fluids located downhole in an oilfield reservoir, the tool comprising;

a fluid analysis module, the fluid analysis module comprising;

a flowline for fluids withdrawn from a formation to flow through the fluid analysis module, the flowline having a first end for the fluids to enter and a second end for the fluids to exit the fluid analysis module;

providing a sensor array having a plurality of sensors in fluid communication with the flowline to sense selected formation parameters; and

configuring a control system for selective and independent operation of each sensor of the sensor array, wherein

each sensor of the sensor array comprises a discrete sensor unit configured or designed for individual and independent communication and control.

16. The method of downhole characterization of formation fluids according to claim 15, further comprising:

inputting tool configuration into a control and communication module;

inputting sensor configuration into the control and communication module;

configuring a data acquisition system based on the sensor configuration;

initiating tool communication;

verifying tool and sensor configurations; and

commencing data acquisition based on the result of the verification of tool and sensor configurations.