Wells – Processes – Assembling well part
Patent
1989-08-22
1991-04-30
Dang, Hoang C.
Wells
Processes
Assembling well part
52 20, 137371, 166 751, 404 25, E21B 3303
Patent
active
050109570
ABSTRACT:
An environmental monitoring well housing and protection method. A housing is disposed over the end of an environmental monitoring well pipe and set in concrete along with the well pipe itself so that the space between the housing and the well pipe is filled with concrete below the end of the well pipe. The housing has an interior ledge for receiving and supporting a cover. A flexible gasket is placed on the ledge, the cover is placed on the flexible gasket, and the two are fastened down by a pair of bolts that screw into threaded bores in the ledge. The cover thickness is substantially the same as the distance from the top of the housing down to the ledge, so that where the top of the housing is mounted flush with the ground the top of the cover is also flush with the ground. The cover includes recesses for the heads of each of the bolts, so that the resultant well head is entirely flush with the surface of the ground. The flexible gasket has an adhesive material on its underside for attachment to the ledge.
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Birdwell William A.
Dang Hoang C.
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