Abstract: An apparatus for isolating a testing zone in a bore hole screen casing includes a lower plug member sealingly positionable at a desired longitudinal point within the casing and an upper plug that is independent of the lower plug is also sealingly positionable at another desired point along the longitudinal bore of the screen casing. The isolated test zone is defined between the lower and upper plug members and both the longitudinal length of the isolated test zone and the location of the test zone are selectively variable. A fluid carrying conduit is connected to the upper plug member and is in communication through a bore in the upper plug member with the isolated test zone for accessing and sampling fluid therein.

Abstract: A screen placement apparatus and system wherein the apparatus includes a motor for providing rotational torque to an auger received within a ground screen and a disposable cutting tip having a cutting diameter equal to or greater than the outer diameter of the screen is connected to the end of the auger. The screen is placed into the ground by simultaneously drilling the hole with the disposable cutting tip, drawing the drill cuttings up through the screen with the auger, and inserting the screen into the hole. The drill cuttings, drawn up through the hole, are discharged through discharge openings. After the desired depth is reached, the auger and motor are longitudinally moved with respect to the screen and cutting tip thereby permanently disconnecting the disposable cutting tip and leaving it within the ground. The auger is, thereafter, retracted from within the ground screen.

Abstract: A hole cleaning device which may be attached to the top of an auger or auger extension for rotation therewith includes two diametrically opposed blades arranged to resemble one flight of an auger, the outside diameter of the blades being suitably larger than the hole-digging auger itself. The two blades are secured to a mounting sleeve adapted to be secured to the upper end of the auger tube which supports the auger or to the top auger collar. To the top sides of the two blades are secured two elongated and radially extending deflecting elements, these being arcuately shaped and upstanding. As a hole is being drilled into the soil, the displaced soil is lifted and deposited onto the surface of the ground in an area around the hole. When the hole is drilled to full depth, the cleaning blades engage the soil build up, lifting and throwing it radially outwardly. For slow auger speeds, the loose soil is stacked in an annular pattern spaced from the hole.