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1. WO2016138014 - SMART LOAD PIN FOR DRAW-WORKS

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

CLAIMS

What is claimed is:

A method for controlling a draw-works system, comprising:

measuring, with a load pin, a load on a hook of a draw-works system;

converting, with the load pin, the measured load to a digital value representative of the measured load, wherein the digital value represents the value of the measured load in engineering units; and

transferring, from the load pin, the digital value representative of the measured load to a control system located at a derrick.

The method of claim 1, further comprising adjusting, with the control system, operation of the draw-works system based, at least in part, on the received digital value representative of the measured load.

The method of claim 1, wherein converting comprises:

converting, with a transducer strain gauge of the load pin, the measured load to an analog voltage representative of the measured load;

converting, with an analog-to-digital converter of the load pin, the analog voltage representative of the measured load to a digital value; and

compensating, with an MCU of the load pin, the digital value to account for known variations in the measurement of the load to obtain the digital value representative of the measured load.

The method of claim 1, wherein the measured load is represented as a tension value.

The method of claim 1, wherein the load pin is coupled to at least one of a traveling block, a drilling hook, and a top drive of the draw-works system.

The method of claim 1, wherein transferring comprises transferring the digital value via at least one of a physical communications bus and a wireless communication system.

A load pin, comprising:

a strain sensor for measuring a load on a hook of a draw-works system; and

electronic circuitry coupled to the strain sensor and configured to perform steps comprising:

converting the measured load to a digital value representative of the measured load, wherein the digital value represents the value of the measured load in engineering units; and

transferring, from the load pin, the digital value representative of the measured load to a control system located at a derrick.

The load pin of claim 7, wherein the electronic circuitry comprises:

an operational amplifier coupled to the strain sensor; and

an analog-to-digital converter (ADC) coupled to the operational amplifier.

The load pin of claim 8, wherein the electronic circuitry is further configured to perform steps comprising scaling and offset conversion of an output of the analog-to-digital converter (ADC).

The load pin of claim 7, wherein the electronic circuitry is configured to perform steps comprising:

converting, with a transducer strain gauge of the load pin, the measured load to an analog voltage representative of the measured load;

converting, with an analog-to-digital converter of the load pin, the analog voltage representative of the measured load to a digital value; and

compensating, with an MCU of the load pin, the digital value to account for known variations in the measurement of the load to obtain the digital value representative of the measured load

The load pin of claim 7, wherein the load pin is configured to be coupled to at least one of a traveling block, a drilling hook, and a top drive of the draw-works system.

The load pin of claim 7, wherein transferring comprises transferring the digital value via at least one of a physical communications bus and a wireless communication system

A computer program product, comprising:

a non-tangible computer readable medium comprising code to perform steps comprising:

receiving data regarding a load on a hook of a draw-works system;

converting the measured load to a digital value representative of the measured load, wherein the digital value represents the value of the measured load in engineering units; and

transferring the digital value representative of the measured load to a control system located at a derrick.

The computer program product of claim 13, wherein the measured load is represented as a tension value.

The computer program product of claim 14, wherein the tension value is measured from at least one of a traveling block, a drilling hook, and a top drive of the draw-works system.

The computer program product of claim 13, wherein transferring comprises transferring the digital value via at least one of a physical communications bus and a wireless communication system.

The computer program product of claim 13, wherein the medium further comprises code to perform steps comprising scaling and offset conversion of the measured load.