Double packer apparatus

Abstract

A double packer apparatus according to embodiments of the present invention may include a first guide unit provided in a borehole within a ground, a second guide unit provided within the ground to cover an external surface of the first guide unit, a packer unit to support the second guide unit in the borehole, and seal a portion of an area provided within the ground, and a photographing unit to enter the first guide unit and photograph the ground, wherein a portion of the external surface of the first guide unit includes a transparent window for photographing the ground. A ground may be investigated directly using a configuration described in the foregoing, thereby contributing to an enhancement of efficiency.

1 . A double packer apparatus, comprising:
 a first guide unit provided in a borehole within a ground;   a second guide unit provided within the ground to cover an external surface of the first guide unit;   a packer unit to support the second guide unit in the borehole, and to seal a portion of an area provided within the ground;   a photographing unit to enter the first guide unit, and photograph the ground,   wherein a portion of the external surface of the first guide unit includes a transparent window for photographing the ground,   the second guide unit includes an open portion that is oriented to face the transparent window of the first guide unit, and   an injection unit constructed to inject water into the open portion of the second guide unit.   
     
     
         2 . The double packer apparatus of  claim 1 , wherein the first guide unit and the second guide unit have hollow guide pipes having different diameters on concentric circles. 
     
     
         3 . (canceled) 
     
     
         4 . (canceled) 
     
     
         5 . A double packer apparatus, comprising:
 a first guide unit provided in a borehole within a ground, and having a transparent window on a portion of an external surface;   a second guide unit, provided within the ground to cover an external surface of the first guide unit, in which a portion of an area facing the transparent window is penetrated;   a packer unit to support the second guide unit in the borehole, and seal a portion of an area provided within the ground;   a photographing unit to enter the first guide unit, and photograph the ground at a location facing the transparent window, and   an injection unit constructed to inject water into the open portion of the second guide unit.   
     
     
         6 . The double packer apparatus of  claim 5 , wherein the first guide unit and the second guide unit have hollow guide pipes having different diameters on concentric circles. 
     
     
         7 . (canceled) 
     
     
         8 . The double packer apparatus of  claim 5 , wherein the transparent window is formed using an acrylic material.