Method for vertical shaft electric-heating-assisted depressurizing production of natural gas hydrate reservoir
A natural gas and hydrate technology, which is applied in the field of natural gas hydrate reservoir exploitation, can solve problems such as reservoir damage, application limitations, and high economic costs, and achieve the effects of easy control, enhanced recovery, and simple structure
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[0016] The following describes the present invention in detail with reference to the drawings, but does not limit the scope of implementation of the present invention.
[0017] (1) According to the geological data of the gas hydrate reservoir, a gas hydrate reservoir with an average effective thickness of 30m is preferred. A vertical well is drilled and completed with casing 10, which is made of stainless steel. The boundary is separated by a glass fiber reinforced plastic casing 8 to force the current on the stainless steel casing of the gas hydrate reservoir section to pass through the gas hydrate reservoir 13, thereby heating the gas hydrate reservoir. The casing 10 is connected to the gas hydrate through the perforation 9 Property 13;
[0018] (2) Install ground control cabinet 1. The control cabinet is composed of power supply 4, power conditioning equipment 3 and switch 2, where power supply 4 is used to provide AC power for heating natural gas hydrate reservoir 13, and power...
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