Wells – Processes – With indicating – testing – measuring or locating
Patent
1983-06-08
1984-09-04
Novosad, Stephen J.
Wells
Processes
With indicating, testing, measuring or locating
166 53, 166369, 405129, E21B 4302, E21B 4312
Patent
active
044691769
ABSTRACT:
In a landfill gas recovery system, the breakthrough danger is minimized, and the system efficiency is improved, by providing pressure-equalizing low-impedance gas paths such as aggregate-filled symmetry trenches positioned within the landfill and surrounding, at least partially, the primary collection zone. The symmetry trenches may be connected to the system's low-pressure source to serve as secondary collectors. A sensing trench positioned within the landfill along the periphery of the collector's zone of influence can be used to monitor the collector pressure and to automatically maintain it at a safe level. The sensing trench can also serve as a secondary equalizing path in heterogeneous landfills. Hot spots may advantageously be tapped by auxiliary collectors whose pressure level bears a predetermined proportional relationship to the primary collector pressure.
REFERENCES:
patent: 2207334 (1940-07-01), Reynolds et al.
patent: 2266000 (1941-12-01), Charles
patent: 3705851 (1972-12-01), Brauer
patent: 4026355 (1977-05-01), Johnson et al.
patent: 4183408 (1980-01-01), Pilkington
patent: 4276778 (1981-07-01), Ham
patent: 4323367 (1982-04-01), Ghosh
Roqueta Alex
Zison Stanley W.
Getty Synthetic Fuels, Inc.
Novosad Stephen J.
Peterson Gordon L.
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