| 摘要 |
An earth loop heat transfer system which, in certain aspects, has a heat transfer loop extending down into the earth and having a first portion, a second portion, and a bottom portion at a first level in the earth, heat transfer fluid flowable down to the bottom portion and up therefrom and in the second portion to the earth surface, and valve apparatus in the heat transfer loop for controlling flow of heat transfer fluid; and, in one aspect, such a system combined with a rig useful in well operations for supplying heat transfer fluid for use on the rig, either from a loop or loops with portion(s) in water or portion(s) in earth, or both. |
