Patent ID: 8251149

Claim:
A method to extract oil from a pool of oil in the ground, comprising the steps of (a) providing an oil extraction apparatus comprising (i) an elongate housing; (ii) at least one baffle wall ( 51 ) fixedly secured to said housing to pool oil during the operation of said oil extraction apparatus, (iii) a plurality of staggered, interconnected, rotatable units ( 42 A, 42 B) each including a hollow cylindrical conduit having a first end, a second end, a first gear mounted on said first end, a second gear mounted on said second end, a drive shaft extending through said conduit, at least one helical blade attached to and extending about said drive shaft, said first gear ( 46 ) on a first one of said units ( 42 A) engaging said second gear ( 45 ) on a second one of said units ( 42 d ) staggered from said first one of said units such that when said first one of said units rotates, said first gear rotates said second gear and said second unit, said first end of said first one of said units ( 42 A) rotatably extending through said baffle wall ( 51 ), said second end of said second one of said units adjacent said baffle wall (iv) motive power to rotate said units ( 42 A, 42 D); (b) boring an elongate canted opening in the ground at a selected angle from the ground; (c) inserting said oil extraction apparatus in the bore such that a portion of said first one of said units is submerged in said pool of oil; and, (d) operating said motive power to rotate said units ( 42 A, 42 B) such that (i) oil from said pool travels up said first one of said units and pools adjacent said baffle wall ( 51 ), and (ii) oil pooling adjacent said baffle wall travels up said second one of said units.