A method of designing an optimized seawater pumping apparatus, using a computer in a system in which a seawater pumping apparatus including a pumping pipe and a well disposed to surround a lateral surface of a land-buried portion of the pumping pipe is installed to reduce seawater intrusion in a land in which an aquifer with a seawater-fresh water boundary surface is formed, includes applying an optimization algorithm to initial condition data of the aquifer to generate n decision variable sets of the seawater pumping apparatus, applying an underground water flow model to each of the n decision variable sets to generate n prediction results of change in the seawater-fresh water boundary surface, calculating a performance evaluation value of each of the n prediction results, and selecting a decision variable set having a maximum performance evaluation value, where n is an integer and equal to or greater than 2.

The present method and apparatus use information on the voltage V and the current I drawn by a pump motor to determine the water or liquid level height H in a well in which the pump is employed. In typical examples, the power of the motor can be related to the pressure and the fluid flow, and equations can then be used to relate fluid flow Q1 to fluid height H in the well. Glossary for FIG Calc.=Calculation Meas.=Measurement Detr.=Determines Avg.=Average Param.=Parameter Calib.=Calibration =command CD=Control device (example smart phone).

The present method and apparatus use information on the voltage V and the current I drawn by a pump motor to determine the water or liquid level height H in a well in which the pump is employed. In typical examples, the power of the motor can be related to the pressure and the fluid flow, and equations can then be used to relate fluid flow Q1 to fluid height H in the well. Glossary for FIG Calc.=Calculation Meas.=Measurement Detr.=Determines Avg.=Average Param.=Parameter Calib.=Calibration =command CD=Control device (example smart phone).

Methods and systems to assess clogging from bacteria associated with a first well are disclosed. The first well is maintained in a quiescent state for a first period of time. Water is not pumped from the first well in the quiescent state. A pump attached to the first well is turned to an ON state. Water is pumped from the first well during the ON state. A water sample is received from the first well during the ON state. The water sample is collected during a first time period corresponding to a surge in mobile particles. A first activity level for a first type of bacteria in the water sample is determined. The activity level is analyzed for clogging specific information related to a state of clogging associated with the first well.

Methods and systems to assess clogging from bacteria associated with a first well are disclosed. The first well is maintained in a quiescent state for a first period of time. Water is not pumped from the first well in the quiescent state. A pump attached to the first well is turned to an ON state. Water is pumped from the first well during the ON state. A water sample is received from the first well during the ON state. The water sample is collected during a first time period corresponding to a surge in mobile particles. A first activity level for a first type of bacteria in the water sample is determined. The activity level is analyzed for clogging specific information related to a state of clogging associated with the first well.

An industrial water well with heat resistant well casing. A thermally resistant well casing is provided within the well bore at a depth where a submersible pump is carried within the casing. The thermally resistant pipe will not be damaged by the heat generated by a failing or failed submersible pump, permitting the pump to be extracted and repaired/replaced before collapse of the casing.

A device for cleaning water wells comprises a downhole tool composed of an electrohydraulic unit (7) with an oscillatory circuit and an ultrasonic unit (4) with an electroacoustic transducer (3) arranged successively in a single housing, sensors of pressure (10) and flow (11), a hydrophone (12), a pump, an ultrasonic generator (13), a pulse generator (14), monitoring equipment (15) for the sensors, a downhole tool control unit (16) equipped with a synchronizer of operation of the electrohydraulic unit (7) and the ultrasonic unit (4), and also with a device for controlling pulse width, beating frequency and spectrum of the signal of the oscillatory circuit of the electrohydraulic unit in order to change the treatment zone. Furthermore, a discharge chamber (8) and a protective cap (9) are arranged in the bottom part of the downhole tool.

A device for cleaning water wells comprises a downhole tool composed of an electrohydraulic unit (7) with an oscillatory circuit and an ultrasonic unit (4) with an electroacoustic transducer (3) arranged successively in a single housing, sensors of pressure (10) and flow (11), a hydrophone (12), a pump, an ultrasonic generator (13), a pulse generator (14), monitoring equipment (15) for the sensors, a downhole tool control unit (16) equipped with a synchronizer of operation of the electrohydraulic unit (7) and the ultrasonic unit (4), and also with a device for controlling pulse width, beating frequency and spectrum of the signal of the oscillatory circuit of the electrohydraulic unit in order to change the treatment zone. Furthermore, a discharge chamber (8) and a protective cap (9) are arranged in the bottom part of the downhole tool.

A module gathers information about water quality indicators in the air above water in a water well and in the ambient air outside the water well. The module sends the information to a database. A detector tracks the substances present inside and outside the well and how it changes over time.

A module gathers information about water quality indicators in the air above water in a water well and in the ambient air outside the water well. The module sends the information to a database. A detector tracks the substances present inside and outside the well and how it changes over time.