Abstract: A pump pulling apparatus that is adapted for attachment to a vertical LFG well for the purpose of moving a pump such as a dewatering pump up and down the well. The apparatus is an upright vertical column on which a reversible winch is mounted. The column may be secured to the wellhead and a cable attaches to the down-well pump and the winch is operable to lower the pump into the well and to raise the pump out of the well.

Abstract: A multi-directional drill-type device that can be shuttled vertically through well casings of various diameters to add new perforations at the desired spacing and positions along the casings to optimize well performance is disclosed. The apparatus is especially suited to add perforations to well casings of existing vertical LFG extraction wells. The apparatus includes a motor in a housing that may be purged with inert gas and with an output shaft that rotates around a first axis. The motor output shaft drives plural drill assembly modules that have drill bits that rotate around an axis normal to the first axis and which reciprocate into and out of the apparatus.

Abstract: A gate or gate-type valve is used as a flow regulating device specifically for use in saturated gaseous, high particulate, high temperature, and low pressure environments such as in landfill gas wellfields and similar environments where particulate and water gathering can obstruct the operation of a typical gate valve. The valve has a T-shaped body with a fluid flow tube and a transverse plunger tube. A plunger threads into the plunger tube to define a fluid-tight seal between the plunger and the plunger tube and has a distal end that opens and closes the fluid flow tube as the plunger is rotated between open and closed positions.

Abstract: An eccentric, smoothly tapered body for installation into cylindrical pipe to cause a constriction in the pipe to facilitate measuring the flow of fluid through the pipe. The body defines a flow constrictor having a smoothly tapered inner surface having a leading edge and a trailing edge and an apex therebetween. A bore extends through the flow constrictor at the apex. Pressure is measured at the bore at the apex and upstream of the flow constrictor and flow rate is calculated from the pressure differential therebetween.

Abstract: An eccentric, smoothly tapered body for installation into cylindrical pipe to cause a constriction in the pipe to facilitate measuring the flow of fluid through the pipe. The body defines a flow constrictor having a smoothly tapered inner surface having a leading edge and a trailing edge and an apex therebetween. A bore extends through the flow constrictor at the apex. Pressure is measured at the bore at the apex and upstream of the flow constrictor and flow rate is calculated from the pressure differential therebetween.