Floating layer recovery apparatus

An apparatus for recovery of a layer of a first underground liquid floating on a second underground liquid in a well, said apparatus comprising:

• a pump;
• float means disposed in said well in said first liquid,
• central cavity extending partially upward from the bottom of said float;
• a radial channel extending from said central cavity to the side of said float;
• screen disposed in said central cavity having a plurality of openings for receiving said first liquid entering said radial channel;
• conduit coupled to said screen for directing said first liquid from said screen to said pump;
• and
• means for adjusting the height of said screen to change the level of the lowest of said openings in said screen with respect to said float.

Apparatus for recovery of a layer of a first underground liquid floating on a second underground liquid in a well, said apparatus comprising:

• first float means disposed in said well in said first liquid, said float means having an effective buoyancy such that is it floats in said first liquid;
• second float means disposed in said well in said first liquid, said second float means having an effective buoyancy such that is floats near the bottom of said first liquid;
• an inlet means moveable concurrently with said second float for permitting entry of said first liquid;
• conduit means coupled to said inlet means and extending below said second float means;
• third float means disposed in said second liquid and having an effective buoyancy such that said third float means will remain submerged in said second liquid, said conduit means being coupled to said third float;
• and
• guide means for slidably connecting said second float between said first and third float means.

Apparatus for recovery of a layer of a first underground liquid floating on a second underground liquid in a well, said apparatus comprising:

• said float means disposed in said well in said first liquid, said float means having an effective buoyancy such that it floats in said first liquid;
• second float means disposed in said well in said first liquid, said second float means having an effective buoyancy such that it floats near the bottom of said first liquid;
• an inlet means disposed in a predetermined position with respect to said second float for permitting entry of said first liquid;
• conduit means coupled to said inlet means and extending below said second float means;
• third float means disposed in said second liquid and having effective buoyancy such that said third float means will remain submerged in said second liquid, said conduit means coupled to said third float;
• and
• guide means for slidably connecting said second float between said first, and third float means.