公开(公告)号：WO2013185083A2

公开(公告)日：2013-12-12

申请号：PCT/US2013044798

申请日：2013-06-07

Applicant: BRAUN INTERTEC GEOTHERMAL LLC

Inventor： FREITAG SCOTT ,  BARR KELTON DOUGLAS LEIGHTON ,  BEECROFT DAVID MICHAEL

IPC: F24J3/08 ,  E21B33/02

CPC classification number: F24J3/081 ,  F24J3/086 ,  Y02E10/12 ,  Y02E10/16

Abstract: This disclosure provides equipment and processes for ground heat exchange. Embodiments of the ground heat exchange system may comprise a geothermal well that includes an inner tube positioned coaxially inside a borehole in geologic units, a substantially-liquid impermeable outer liner sealed at the bottom, and a liquid supply system. The outer liner may include one or more layers of a substantially-liquid impermeable fabric or coating. A fluid such as water is supplied by the liquid supply system and flows co-axially through the inner tube. The fluid pressure in the annulus between the inner tube and the outer liner presses the outer liner against the borehole wall, providing sealing contact and preventing interconnection of aquifers of the geologic units.

Abstract translation: 本公开提供了用于地面热交换的设备和方法。 地面热交换系统的实施例可以包括地热井，其包括同轴地位于地质单元内的钻孔内的内管，在底部密封的基本上液体不可渗透的外衬套和液体供应系统。 外衬里可以包括一层或多层基本上液体不可渗透的织物或涂层。 诸如水的流体由液体供应系统供应并且同轴地流过内管。 内管和外衬套之间的环空中的流体压力将外衬套压靠在井壁上，提供密封接触并防止地质单元的含水层互连。