A sectional pumping apparatus for well casing includes a discharge pipe, a submersible pump, a pump housing, a swab tool, and a central axis. The discharge pipe, the submersible pump, the pump housing, and the swab tool are concentrically positioned along the central axis. The discharge pipe includes a first tubular body and a flange connector. The flange connector is radially connected around the first tubular body. The submersible pump is hermetically attached to a pump end of the first tubular body. The submersible pump and the pump end are positioned within the pump housing as the first tubular body is hermetically attached to a top end of the pump housing through the flange connector. The swab tool is hermetically attached to a bottom end of the pump housing and is in fluid communication with the discharge pipe through the submersible pump.

Disclosed is a non-powered seawater pumping apparatus for reducing seawater intrusion in a land in which an aquifer with a seawater-fresh water boundary surface is formed. The seawater pumping apparatus includes a pumping pipe having two open end portions, a first end portion of the open end portions being positioned below a sea level and a second end portion being positioned below the seawater-fresh water boundary surface in the land, and a well disposed to surround a lateral surface of a land-buried portion of the pumping pipe, which is buried in the land, so as to space away the land-buried portion of the pumping pipe from the land. The pumping pipe is filled with seawater, and the well comprises a screen having a plurality of through holes formed along a circumference of the well at a lower end portion of the well.

Disclosed is a non-powered seawater pumping apparatus for reducing seawater intrusion in a land in which an aquifer with a seawater-fresh water boundary surface is formed. The seawater pumping apparatus includes a pumping pipe having two open end portions, a first end portion of the open end portions being positioned below a sea level and a second end portion being positioned below the seawater-fresh water boundary surface in the land, and a well disposed to surround a lateral surface of a land-buried portion of the pumping pipe, which is buried in the land, so as to space away the land-buried portion of the pumping pipe from the land. The pumping pipe is filled with seawater, and the well comprises a screen having a plurality of through holes formed along a circumference of the well at a lower end portion of the well.

A water sampling assembly for sampling water within a groundwater production well includes a primary pump and a water sampler. The primary pump is positioned within the groundwater production well. Additionally, the primary pump defines at least a portion of an annulus between the primary pump and one of the support casing and the well screen. The water sampler is configured to obtain a plurality of water samples from the groundwater production well without removal of the water sampler from the groundwater production well. Additionally, the water sampling assembly can further include a flow detection assembly that is conjoined with the water sampler within a single jacket to form a conjoined system. The flow detection assembly is configured to detect a flow, i.e. a dynamic flow and/or an ambient flow, of the water within the groundwater production well.

A system and method for operating a low-yield well. The method starts with a pressure transducer telling a control box that a storage tank is low on water. The controller then activates the well pump, the water then flows up a pipe past a pressure transducer showing the back pressure, through a regulator and into the storage tank. The controller is constantly monitoring the tank level and the back-pressure level to indicate when to turn off the well to either stop from over filling the storage tank, or over pumping the well. The controller makes adjustments dependent on the back pressure (which indicates the level of water left in the well) and determines how long to withdraw water and how long to wait until the water can be withdrawn again. The system prevents pumping the well dry, and keeps the pump and well in good operating condition.

A system and method for operating a low-yield well. The method starts with a pressure transducer telling a control box that a storage tank is low on water. The controller then activates the well pump, the water then flows up a pipe past a pressure transducer showing the back pressure, through a regulator and into the storage tank. The controller is constantly monitoring the tank level and the back-pressure level to indicate when to turn off the well to either stop from over filling the storage tank, or over pumping the well. The controller makes adjustments dependent on the back pressure (which indicates the level of water left in the well) and determines how long to withdraw water and how long to wait until the water can be withdrawn again. The system prevents pumping the well dry, and keeps the pump and well in good operating condition.

A sectional pumping apparatus for well casing includes a discharge pipe, a submersible pump, a pump housing, a swab tool, and a central axis. The discharge pipe, the submersible pump, the pump housing, and the swab tool are concentrically positioned along the central axis. The discharge pipe includes a first tubular body and a flange connector. The flange connector is radially connected around the first tubular body. The submersible pump is hermetically attached to a pump end of the first tubular body. The submersible pump and the pump end are positioned within the pump housing as the first tubular body is hermetically attached to a top end of the pump housing through the flange connector. The swab tool is hermetically attached to a bottom end of the pump housing and is in fluid communication with the discharge pipe through the submersible pump.

A system and method for reducing lifting cost per gallon of a vertical water well of this disclosure includes: lowering a location device into the open well bore of the vertical water well until the location device reaches a depth in a range of 0 feet to 30 feet above a bottom end of the vertical water well; determining a predetermined location vertically offset 10 feet to 30 feet below, and coaxial to, the bottom end; drilling, from a horizontally offset position, a horizontal water well using a boring/drilling assembly including a signal transmitter; determining, using signals transmitted and received, a location of the boring/drilling assembly relative to the predetermined location; steering the boring/drilling assembly so that the horizontal water well intersects the predetermined intersecting well depth; intersecting the predetermined location with the boring/drilling assembly; and extending the depth of the vertical water well until it reaches the predetermined location.

A method of preventive well maintenance with pumping equipment in the well for well rehabilitation using CO.sub.2 with varying lengths of producing intervals utilizing varying methods to deliver cleaning energy and varying porosity of aquifers to determine varying quantities of energy over the entire well structure.

A water well rehabilitation system is provided for a water well having an open borehole through an aquifer substrate which extends to the bottom of the water well. The system includes an acid injection assembly having a concentrated acid supply, a water supply, and an eductor to mix the concentrated acid with water to form an acid solution to inject into one or more predetermined elevations in the open borehole. An acid injection control assembly includes a concentrated acid control valve and a water supply control valve cooperatively operative to maintain a predetermined acid concentration in the acid solution formed in and discharged from the eductor. A flush water assembly is disposed to inject an amount of flush water into the water well, and a well monitoring assembly monitors at least one operating parameter while a rehabilitation process is being performed in the water well.