JOHN DAVID WATSON
Pilots at Chisholm Hl Rd, Weatherford, TX
License number
Texas A4774785
Issued Date
Jan 2013
Expiration Date
Jan 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
155 Chisholm Hills Rd, Weatherford, TX 76087
Professional information
Artificial Lifting Device For Well Fluids Using A Continous Loop
US Patent:
6158515, Dec 12, 2000
Filed:
Feb 4, 1998
Appl. No.:
9/018719
Inventors:
Richard H. Greer - Hawkins TX
Herbert W. Markwardt - Arlington TX
Stephen B. Markwardt - Fort Worth TX
Walter R. Shaw - Alvarado TX
John R. Watson - Weatherford TX
Herbert W. Markwardt - Arlington TX
Stephen B. Markwardt - Fort Worth TX
Walter R. Shaw - Alvarado TX
John R. Watson - Weatherford TX
Assignee:
Lift Systems LLC - Fort Worth TX
International Classification:
E21B 4308
US Classification:
166369
Abstract:
Fluid is lifted from a well with a continuous loop of fibrous material, such as rope. The rope loop is formed around a drive sheave on the surface with a return sheave down inside of the well. The drive sheave has ridges along the side surfaces of a groove. The rope lays in the groove in contact with the ridges. A motor rotates the drive sheave so as to lift the oily rope from the well. Guides and wipers are provided to direct the rope into the drive sheave and to the wipers. The wipers are slotted cards that scrape a quantity of oil from the outside surface of the rope. The oil falls down into a bottom of a housing for collection purposes.