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SOLUTION MINING A STABLE ROOF UNDER AN INERT GAS
申请公布号：US2016160644(A1)
申请号：US201514753818
申请日期：2015.06.29
申请公布日期：2016.06.09
发明人：STRYBOS Ronald
分类号：E21D13/00
主分类号：E21D13/00
地址：Houston TX US
摘要：This method includes a solution mined underground salt cavern, wherein the salt cavern has a main body with a mean diameter of DN, and an upper portion comprising an inert gas pad, a stream of leaching water which is injected below the inert gas pad with a velocity V, thereby leaching an Nth tier adjacent to the upper portion having a height H1 and a mean diameter DN+1 that is smaller than DN by a ratio R raising the inert gas pad by an amount A1, providing a stream of leaching water which is injected below the inert gas pad with a velocity V, thereby leaching a N+1th tier adjacent to the Nth tier having a height H2 and a to a mean diameter DN+2 that is smaller than DN+1 by a ratio R, and repeating steps c and d a number of times T, thereby forming a stable roof.
主权项：1: A method of solution mining a stable roof under an inert gas blanket, comprising: a) providing a solution mined underground salt cavern, wherein said salt cavern has a main body with a mean diameter of DN, and an upper portion comprising an inert gas pad, b) providing a stream of leaching water which is injected below the inert gas pad with a velocity V, thereby leaching an Nth tier adjacent to the upper portion having a height H1 and a mean diameter DN+1 that is smaller than DN by a predetermined ratio of between 15 and 35%, c) raising the inert gas pad by a predetermined amount A1, d) providing a stream of leaching water which is injected below the inert gas pad, thereby leaching a N+1th tier adjacent to the Nth tier having a height H2 and a to a mean diameter DN+2 that is smaller than DN+1 by a predetermined ratio R, e) repeating steps c and d a predetermined number of times T, thereby forming a stable roof.