DOWNHOLE MOTOR'S OPERATING TIME AND RPM RECORDER Russian patent published in 2009 - IPC E21B45/00 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to the control means of the well sinking process parametres. Recorder consists of a body with a power supply element installed therein and an electronic unit provided on the board and including the following electronic components: the point whereat executive programme is programmed, with built-in temperature sensor and calendar time timer, a measuring element, an energy-independent memory chip and data I/O port the input/output whereof is connected to the point where executive programme is programmed. At that, the above electronic components are connected to each other by means of input/output system. As a measuring element, electronic unit consists of at least one gyro, the sensitivity axis of which is parallel to the electronic unit board installed in the body along its longitudinal axis, and at the same time, the sensitivity axis has an angular displacement by the acute angle value of more than 0° up to less than 90° relative to the body longitudinal axis, and as the point where executive programme is programmed, the electronic unit includes a microcontroller wherein executive programme is programmed, with built-in ATsP analog-to-digital converter, temperature sensor and calendar time timer. Besides electronic unit consists of voltage converter of the measuring element and at least one buffer amplifying element.

EFFECT: increasing accuracy and reliability of the downhole motor operating time and rpm measurement.

4 cl, 5 dwg