| 摘要 |
A downhole production instrumentation comprising a modular tool 16 used in the acquisition and control of information, and actuation of electromechanical devices in a production well. The tool 16 is suitable for both permanent and retrievable applications for measurement of production fluid and geological formation parameters. Multi well/multi-zone monitoring and control can also be provided with the instrumentation of the present invention. A data acquisition surface unit located at the surface provides production well monitoring and control. The tool 16 comprises a plurality of interchangeable instrumentation modules 20a-h and a control module 22. Interface between the downhole control module and the data acquisition surface unit 18 is provided over a single conductor cable 32, which supports both communication and power over a single conductor. This cable may be connected to a plurality of tools in a corresponding plurality of zones by a parallel connection to the single conductor. Each tool 16 has a unique address for communication with the data acquisition surface unit . Each instrumentation module 20a-h interfaces over a tool bus with the control module 22. A standard interface and connection between modules allows the tool 16 to be configured (or reconfigured) using a control module any one or a number of interchangeable instrumentation modules. The downhole modules include instrumentation (sensors), such as, pressure, temperature and flow gauges, gamma ray and pulse neutron detectors, or any other suitable devices for measuring production fluid, geological parameters and the like. |
