Fluid well pumping system

Details Fluid well pumping system Fluid well pumping system

2002-07-09

2003-05-06

Gartenberg, Ehud (Department: 3746)

Pumps

Condition responsive control of pump drive motor

By controlling drive motor motive fluid

C417S121000, C417S254000, C417S392000, C417S904000

Reexamination Certificate

active

06558128

ABSTRACT:

BACKGROUND
Conventional systems are known for removing fluid such as water or oil from wells where there is an abundant supply of fluid, however, in shallow locations or locations with a low production volume, these systems may not be cost justified. For example, in oil formations 500-1000 feet deep which only produce a few barrels of oil per day, multiple oil wells are often situated close together. Equipment and maintenance costs are often economically prohibitive in these shallow wells.
Furthermore, due to pressure, chemical conditions, and sand and grit in most oil wells the equipment is subject to high breakdown rates and requires frequent maintenance, repair or replacement. Consequently, particularly for a shallow, low production situations, there is a need for inexpensive, low maintenance pumping systems. Prior approaches to this type of pumping system have involved complex controls, sensors and electronics normally lowered into the well. This results in excess complexity, cost and maintenance.
One approach to a pumping system is shown in U.S. Pat. No. 4,653,989 issued to Mason. Mason shows a series of pneumatic displacement chambers connected to an air compressor at the surface of the well, by a single air line. Each chamber is connected to the air line through a motorized valve. A float including a disk shaped magnet, rides up and down in each displacement chamber. When fluid fills the chamber, the float approaches the top and the magnet is detected by a sensor which causes the control system to open the motorized valve connecting the chamber to the air line. Once the motorized valve is open, compressed air forces the fluid into the next chamber, or alternatively, into a holding tank on the surface. As the float approaches the bottom of the chamber, the magnet is detected by a sensor which causes the control system to close the motorized valve connecting the chamber to the air line. The Mason patent additionally teaches that the float be provided with flutes between its lower surface and the internal surface of the chamber to avoid the possibility of the float being used as a valve. The design of the Mason patent is costly and complex, requiring a magnetic sensor system located down hole and a motorized valve in connection with each chamber of the well pump, in addition to other shortcomings.
Another well pump is shown in U.S. Pat. No. 4,050,854 to Hereford et al. The Hereford patent shows a well pump including chambers that are costly and complex, among other disadvantages.
Consequently, there remains a need for a simple, efficient, low cost, low maintenance pumping system with a minimum of electronic components and complexity. The present inventions address these needs.
SUMMARY
It is an object of this invention to provide an improved fluid pumping system.
It is a further object of this invention to provide a simple, efficient, low-cost, low-maintenance pumping system.


REFERENCES:
patent: 657917 (1900-09-01), Conrader
patent: 1604421 (1926-10-01), Oliphant
patent: 1929674 (1933-10-01), Canfield
patent: 2142773 (1939-01-01), Athey
patent: 2173413 (1939-09-01), Foster
patent: 2340943 (1944-02-01), Downs
patent: 2429848 (1947-10-01), Smith
patent: 2442642 (1948-06-01), Eckel
patent: 2807216 (1957-09-01), Bielstein
patent: 2822757 (1958-02-01), Coberly
patent: 2843046 (1958-07-01), Knowles
patent: 2862448 (1958-12-01), Belding
patent: 3306216 (1967-02-01), Warman
patent: 3601191 (1971-08-01), McMurry et al.
patent: 3736983 (1973-06-01), Beard et al.
patent: 3894814 (1975-07-01), Morgan
patent: 3991825 (1976-11-01), Morgan
patent: 4050854 (1977-09-01), Hereford et al.
patent: 4076457 (1978-02-01), Skinner et al.
patent: 4439110 (1984-03-01), Massaux
patent: 4460048 (1984-07-01), Smith et al.
patent: 4537256 (1985-08-01), Beard
patent: 4589494 (1986-05-01), Sakoda
patent: 4653989 (1987-03-01), Mason
patent: 5141404 (1992-08-01), Newcomer et al.
patent: 5161956 (1992-11-01), Fiedler
patent: 5183391 (1993-02-01), Fiedler
“Introduction to Gas Lift,” EVI Oil Tools, © 9/97.
“Guard Dog II Oil Lift Systems,” Scientific Oilfield Systems, Inc.
“More Oil-Less Toil • • Much Gas-At Last,” Oiltizer, vol. 20, No. 8, Jan. 25, 1997, p. 2.
“Fee and Low Cost New SOS Oil Production Technology”, Scientific Oilfield Systems, Inc.
“More Oil—Less Toil • • Much Gas—At Last,” Scientific Oilfield Systems, Inc.

Affiliated with

Also associated with

Rating

Fluid well pumping system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fluid well pumping system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluid well pumping system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3036712