Measuring of fluid level in a well
First Claim
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1. A method to set pump activate and pump inactivate conditions, in a well containing a pumpable liquid, to pump the liquid comprising:
- transmitting a first continuous sonic signal at a first frequency to a well casing thereby creating a reflected well casing sonic signal;
receiving the reflected well casing sonic signal from first sonic signal;
transmitting a second continuous sonic signal at a second frequency, different than said first frequency, to a well tubing thereby creating a reflected well tubing sonic signal;
receiving a reflected well tubing sonic signal from said second sonic signal;
transmitting a third continuous sonic signal at a third frequency, different than said first frequency and different than said second frequency, to the well annulus;
receiving a reflected well annulus sonic signal from said third sonic signal;
utilizing at least one of the reflected signals corresponding to the transmitted signal to determine an initial liquid level P2 of the well;
pumping the liquid from the well until the well is at a no liquid pumpable state P0;
utilizing at least one of the reflected signals corresponding to the transmitted signal to determine the no liquid pumpable state P0;
storing the data generated from the reflected signal used at the no liquid pumpable state P0;
storing the data generated from the corresponding transmitted signal at the initial liquid level P2 of the well;
continuously monitoring the liquid level of the well and converting the data generated to activate the pump to pump the liquid at a liquid level less than or equal to the initial liquid level P2;
continuously monitoring the liquid level of the well and converting the data generated to inactivate the pump at a liquid level P1 above the no liquid pumpable state P0;
thereby activating the pump and inactivating the pump to pump the liquid.
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Abstract
A method of using a variety of sonic transmissions is utilized to determine fluid level in a well. It is known that wells replenish fluid at different rates even in the same formation or well field. Maximum production at minimum pumping cost is achieved for a given well.
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Citations
18 Claims
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1. A method to set pump activate and pump inactivate conditions, in a well containing a pumpable liquid, to pump the liquid comprising:
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transmitting a first continuous sonic signal at a first frequency to a well casing thereby creating a reflected well casing sonic signal;
receiving the reflected well casing sonic signal from first sonic signal;
transmitting a second continuous sonic signal at a second frequency, different than said first frequency, to a well tubing thereby creating a reflected well tubing sonic signal;
receiving a reflected well tubing sonic signal from said second sonic signal;
transmitting a third continuous sonic signal at a third frequency, different than said first frequency and different than said second frequency, to the well annulus;
receiving a reflected well annulus sonic signal from said third sonic signal;
utilizing at least one of the reflected signals corresponding to the transmitted signal to determine an initial liquid level P2 of the well;
pumping the liquid from the well until the well is at a no liquid pumpable state P0;
utilizing at least one of the reflected signals corresponding to the transmitted signal to determine the no liquid pumpable state P0;
storing the data generated from the reflected signal used at the no liquid pumpable state P0;
storing the data generated from the corresponding transmitted signal at the initial liquid level P2 of the well;
continuously monitoring the liquid level of the well and converting the data generated to activate the pump to pump the liquid at a liquid level less than or equal to the initial liquid level P2;
continuously monitoring the liquid level of the well and converting the data generated to inactivate the pump at a liquid level P1 above the no liquid pumpable state P0;
thereby activating the pump and inactivating the pump to pump the liquid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method to set pump activate and pump inactivate conditions, in a well containing a pumpable liquid, to pump the liquid comprising:
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selectively transmitting a first sonic signal at a first frequency to a well casing thereby creating a reflected well casing sonic signal;
receiving the reflected well casing sonic signal, when said first sonic signal is transmitted, from said first sonic signal;
selectively transmitting a second sonic signal at a second frequency, different than said first frequency, to a well tubing thereby creating a reflected well tubing sonic signal;
receiving a reflected well tubing sonic signal, when said second sonic signal is transmitted, from said second sonic signal;
selectively transmitting a third sonic signal at a third frequency, different than said first frequency and different than said second frequency, to the well annulus;
receiving a reflected well annulus sonic signal, when said third sonic signal is transmitted;
utilizing at least two of the reflected signals from the corresponding transmitted signals to determine the initial liquid levels P2 of the well;
pumping the liquid from the well until the well is at a no liquid pumpable state P0;
utilizing at least two of the reflected signals corresponding to the transmitted signals to determine the no liquid pumpable state P0;
storing the data generated from the reflected signals used at the no liquid pumpable state P0;
storing the data generated from the corresponding transmitted signal at the initial liquid level P2 of the well;
monitoring the liquid level of the well and converting the data generated to activate the pump to pump the liquid at a liquid level less than or equal to the initial liquid level P2;
monitoring the liquid level of the well and converting the data generated to inactivate the pump at a liquid level P1 above the no liquid pumpable state P0;
thereby activating the pump and inactivating the pump to pump the liquid. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification