Accordingly, an improved pumping system is herein disclosed. In one embodiment, the pumping system includes a subsurface pump, a tubing string, and a surface pumping unit. The subsurface pump is anchored downhole and driven by repeated upward and downward motion of the tubing string. The subsurface
Accordingly, an improved pumping system is herein disclosed. In one embodiment, the pumping system includes a subsurface pump, a tubing string, and a surface pumping unit. The subsurface pump is anchored downhole and driven by repeated upward and downward motion of the tubing string. The subsurface pump pumps fluids to the surface via the tubing string. The upward and downward motion of the tubing string is imparted by any suitable surface pumping unit such as, e.g. a beam pumping unit or a hydraulic pumping unit. This pumping system advantageously provides for a minimal number of strings downhole, requiring at most only (1) casing and (2) the production tubing. Accordingly, the well may be drilled using a very slender hole, thereby allowing for sharply reduced drilling and production costs.
대표청구항▼
Accordingly, an improved pumping system is herein disclosed. In one embodiment, the pumping system includes a subsurface pump, a tubing string, and a surface pumping unit. The subsurface pump is anchored downhole and driven by repeated upward and downward motion of the tubing string. The subsurface
Accordingly, an improved pumping system is herein disclosed. In one embodiment, the pumping system includes a subsurface pump, a tubing string, and a surface pumping unit. The subsurface pump is anchored downhole and driven by repeated upward and downward motion of the tubing string. The subsurface pump pumps fluids to the surface via the tubing string. The upward and downward motion of the tubing string is imparted by any suitable surface pumping unit such as, e.g. a beam pumping unit or a hydraulic pumping unit. This pumping system advantageously provides for a minimal number of strings downhole, requiring at most only (1) casing and (2) the production tubing. Accordingly, the well may be drilled using a very slender hole, thereby allowing for sharply reduced drilling and production costs. ough a filler neck coupled to said inlet neck; at least one, generally annular, outwardly extending projection extending from an external surface of said housing and engaged with said inlet neck arranged to engage said inlet neck to retain said valve housing in a fixed position in said valve chamber so that said valve housing is retained proximate to said fuel tank; said neck being overmolded over said at least one, generally annular, outwardly extending projection; and said valve housing having at least one annular, radially outwardly extending lip generally and extending externally of said inlet neck. 2. The apparatus of claim 1, wherein said retainer includes multiple axially spaced apart, annular, radially outwardly extending projections coupled to said housing and overmolded in said inlet neck. 3. The apparatus of claim 1, wherein said sealing lip is sized and dimensioned to contact an internal surface of a jumper hose placed over an external surface of said inlet neck. 4. A fuel tank valve apparatus for installation on a fuel tank, said fuel tank valve apparatus comprising: an inlet neck defining a valve chamber having an inlet opening defined by an open end of said inlet neck, said inlet neck being attachable to said fuel tank; a valve housing formed for at least partially being disposed in said valve chamber; a valve retained in communication with said valve housing; at least one, generally annular, outwardly extending projection extending from an external surface of said housing and engaged with said inlet neck to retain said valve housing in a fixed position in said valve chamber to position said valve relative to said fuel tank; said neck being overmolded over said at least one, generally annular, outwardly extending projection; and said valve housing includes at least one annular, radially outwardly extending lip generally and extending externally of said inlet neck. 5. The apparatus of claim 4, wherein said retainer includes multiple axially spaced apart, annular, radially outwardly extending projections coupled to said housing overmolded in said inlet neck. 6. The apparatus of claim 4, wherein said sealing lip is sized and dimensioned to contact an internal surface of a jumper hose placed over an external surface of said inlet neck. 7. A non-permeable fuel tank attachment for installation on a fuel tank, said non-permeable fuel tank attachment comprising: an inlet neck defining a valve chamber having an inlet opening defined by an open end of said inlet neck; said inlet neck being formed of a material compatible for welding attachment to said fuel tank and providing a non-permeable connection and barrier to prevent the escape of fuel and fuel vapor from said fuel tank; a valve housing formed for at least partially being disposed in said valve chamber at least one outwardly extending projection extending from an external surface of said valve housing for coupling said valve housing with said inlet neck to retain said valve housing in a fixed position in said valve chamber to position said valve relative to said fuel tank; said inlet neck being overmolded over said at least one outwardly extending projection; and said valve housing including at least one annular, radially outwardly extending lip generally and extending externally of said inlet neck. 8. The apparatus of claim 7, wherein said retainer includes multiple axially spaced apart, annular, radially outwardly extending projections coupled to said housing and overmolded in said inlet neck. 9. The apparatus of claim 7, wherein said sealing lip is sized and dimensioned to contact an internal surface a jumper hose placed over an external surface of said inlet neck. 10. A method of installing a fuel tank apparatus on a fuel tank, said fuel tank including a hydrocarbon impermeable barrier layer, said fuel tank apparatus including an inlet neck, a valve housing positioned at least partially in a valve chamber defined by said inlet nec
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이 특허에 인용된 특허 (10)
Tornquist Fernando Maria Solanet,ARX, Assembly and method for the extraction of fluids from a drilled well within a geological formation.
Poppe Wassily (Lombard IL) Chen Yu-Tsai (Glenn Ellyn IL) Paschke Edward E. (Wheaton IL), Filled composition comprising crystalline copolyamide from terephthalic acid, isophthalic acid and hexamethylene diamine.
Hammond Bravo, William Anthony, Artificial simultaneous production and maintenance system assisted by mechanical pumping with flexible tubing for fluid extraction.
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