High temperature wellbore monitoring method and apparatus
First Claim
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1. An apparatus comprising a downhole element and a master element connected together via a sealed connection;
- wherein the downhole element consists of a temperature sensor and a pressure sensor without any electronics and is embedded in a sealed housing resistant to high temperature;
wherein the master element comprises electronics that control the temperature sensor and the pressure sensor;
wherein the sealed connection is resistant to high temperature;
wherein the sealed connection is a cable; and
wherein the master element comprises further a controlled current source supplying a current to the downhole element via the sealed connection and said current being alternatively switched in polarity.
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Abstract
The invention provides an apparatus for use in high temperature conditions, constituted of a downhole element and a master element connected together via a sealed connection; wherein the downhole element comprises a temperature sensor and a pressure sensor without any electronics and is embedded in a sealed housing resistant to high temperature; wherein the master element comprises electronics needed for function of the temperature sensor and the pressure sensor; and wherein the sealed connection is resistant to high temperature.
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Citations
6 Claims
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1. An apparatus comprising a downhole element and a master element connected together via a sealed connection;
- wherein the downhole element consists of a temperature sensor and a pressure sensor without any electronics and is embedded in a sealed housing resistant to high temperature;
wherein the master element comprises electronics that control the temperature sensor and the pressure sensor;
wherein the sealed connection is resistant to high temperature;
wherein the sealed connection is a cable; and
wherein the master element comprises further a controlled current source supplying a current to the downhole element via the sealed connection and said current being alternatively switched in polarity. - View Dependent Claims (2, 3, 4, 5, 6)
- wherein the downhole element consists of a temperature sensor and a pressure sensor without any electronics and is embedded in a sealed housing resistant to high temperature;
Specification