| http://www.w3.org/ns/prov#value | - In one embodiment of the invention, this allows the drilling of a lateral wellbore 104 a in a subterranean zone 102 a at a first depth 218 and then the drilling of a lateral wellbore 104 b in a subterranean zone 102 b at a second depth 220, while ensuring that any gas or other fluid obtained from lateral wellbore 104 a at first depth 218 does not flow past sealing member 210 and interfere with the
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