초록 ▼

A well pumping method and apparatus whereby fluids such as water or oil are pumped out of a well casing in an annular space between an electrical power cable and an associated protective metal coil tubing which surrounds the cable. To this end, the downhole end of the tubing is connected to the outl

A well pumping method and apparatus whereby fluids such as water or oil are pumped out of a well casing in an annular space between an electrical power cable and an associated protective metal coil tubing which surrounds the cable. To this end, the downhole end of the tubing is connected to the outlet of a submersible motor and pump assembly. In carrying out the invention, a process is practiced which includes: (a) providing hollow, flexible tubing having a length approximating the depth of the well; (b) inserting an electrical cable within said tubing, said cable and tubing sized to create a substantially annular space between said wire and said tubing; (c) attaching said electrical wire and said tubing to a submersible motor and pump assembly; (d) lowering said pump and motor assembly into said well casing; and (e) pumping said fluid out of the well casing in the annular space between the electrical cable and flexible tubing.

대표청구항 ▼

A method of pumping fluid from the bottom of a well comprising: (a) locating a submersible pump and motor assembly within a well casing, said assembly suspended in said well casing by an electrical power cable surrounded by hollow, flexible metal coil tubing, said power cable and tubing extending be

A method of pumping fluid from the bottom of a well comprising: (a) locating a submersible pump and motor assembly within a well casing, said assembly suspended in said well casing by an electrical power cable surrounded by hollow, flexible metal coil tubing, said power cable and tubing extending between said assembly and a wellhead; and (b) pumping fluid from the well in a substantially annular space between said electrical cable and said hollow flexible metal coil tubing.