초록 ▼

The present invention includes an assembly and method to pump fluids produced by a drilled well within a geological formation having a borehole wall fixed by casing. The invention includes a subsurface pump having a stationary member and a mobile member. A pump anchor fixes the pump to the well casi

The present invention includes an assembly and method to pump fluids produced by a drilled well within a geological formation having a borehole wall fixed by casing. The invention includes a subsurface pump having a stationary member and a mobile member. A pump anchor fixes the pump to the well casing. A hollow continuous tube or coiled tubing extends within the well bore from the surface down to the lower portion of the well bore. The bottom end of the coiled tubing is connected to the mobile member of the pump. Preferably, the coiled tubing can be coiled and uncoiled from a reel located on the surface. A hollow polished rod has a bottom end coupled to a free top end of the coiled tubing. The hollow polished rod is connected to means to operate the hollow rod according to a selected movement, preferably reciprocating axial movement. The pumped fluids are recovered on the surface from the hollow polished rod and coiled tubing.

대표청구항 ▼

[ What is claimed is:] [1.] In a well borehole drilled within a geological formation, an assembly for extracting production fluids from the well borehole to the ground surface comprising:a casing lining the well borehole;an upper housing connected to an upper end of said casing;a subsurface pump hav

[ What is claimed is:] [1.] In a well borehole drilled within a geological formation, an assembly for extracting production fluids from the well borehole to the ground surface comprising:a casing lining the well borehole;an upper housing connected to an upper end of said casing;a subsurface pump having a stationary member and a reciprocating member, said stationary member anchored to said casing; anda hollow tube connected to said reciprocating member and extending substantially to the ground surface;wherein reciprocating movement of said hollow tube produces production fluids through said hollow tube to the ground surface. [19.] A method for extracting production fluids from a drilled well within a geological formation, the well having a borehole wall fixed by casing which is perforated at preselected depths, the method comprising the steps of:connecting a hollow tube to a mobile member of a subsurface pump;lowering the subsurface pump into the casing with the hollow tube;anchoring the subsurface pump within the lower end of the casing; andproviding reciprocating movement to the hollow tube to produce production fluids through the hollow tube.