# US 9,038,711 B2 · Deep-well pump system

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- Number: US 9,038,711 B2
- Document ID: US9038711B2
- Status: Granted
- Kind: B2
- Application number: 13/521,484
- Filed: 2010-12-04
- Published: 2013-09-12
- Granted: 2015-05-26
- Earliest claimed: 2010-01-12
- Assignees: Grundfos Management A/S
- Applicants: Jørgen Bach
- Inventors: Jørgen Bach
- Web page: https://patentgrep.com/patent/US9038711B2

## CPC

- E03B 5/06: Special equipment {, e.g. well seals and connections for well casings or the like}
- E03B 3/12: by means of vertical pipe wells
- E03B 3/16: Component parts of wells
- E21B 37/08: cleaning in situ of down-hole filters, screens, {e.g. casing perforations,} or gravel packs (E21B37/06 takes precedence)
- E21B 43/02: Subsoil filtering
- F04B 47/04: the driving means incorporating fluid means
- Y02A 20/00: Water conservation; Efficient water supply; Efficient water use
- E03B: INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER (drilling wells, obtaining fluids in general from wells E21B; pipe-line systems in general F17D)
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F)
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE

## Abstract

A borehole pump system includes an immersion pump (20) and a riser (15) accommodated in the borehole (10). A water treatment system for cleaning pumped water is disposed in the riser.

## Claims

### Claim 1

A borehole pump system comprising an immersion pump (20) and a riser (15) accommodated in a borehole (10), wherein a water treatment system for cleaning pumped water is disposed in the riser, the water treatment system comprising an aerator (30) disposed entirely in the riser and which precipitates dissolvent through aeration of the pumped water.

### Claim 2 (depends on 1)

The borehole pump system according to claim 1, wherein the water treatment system is disposed above the immersion pump (20).

### Claim 3 (depends on 1)

The borehole pump system according to claim 1, wherein the water treatment system comprises an aeration section (40), which accounts for more than two thirds of a vertical extension of the riser (15) in the borehole (10).

### Claim 4 (depends on 1)

The borehole pump system according to claim 1, wherein the water treatment system comprises at least one water filter (45).

### Claim 5 (depends on 4)

The borehole pump system according to claim 4, wherein the water filter (45) is disposed inside the borehole (10) close to or directly at an upper end thereof.

### Claim 6 (depends on 4)

The borehole pump system according to claim 4, wherein the water filter (45) is one of a metal, a mineral filter and a cartridge filter.

### Claim 7 (depends on 4)

The borehole pump system according to claim 4, wherein the water filter (45) is back-rinsable.

### Claim 8 (depends on 7)

The borehole pump system according to claim 7, further comprising a rinsing device for rinsing the water filter (45) with compressed air or pressurized water.

### Claim 9 (depends on 8)

The borehole pump system according to claim 8, wherein the rinsing device and the aerator (30) have a common compressed air source (60).

### Claim 10 (depends on 4)

The borehole pump system according to claim 4, wherein the riser (15) is at least partially flexible at least upstream of the water filter (45).

### Claim 11 (depends on 4)

The borehole pump system according to claim 4, further comprising pressure gauges (52, 53) provided upstream or downstream of the water filter (45).

### Claim 12 (depends on 11)

The borehole pump system according to claim 11, further comprising a control device (54) to detect a pressure measured with the pressure gauges (52, 53) and to control or start rinsing of the water filter (45) as a function of the detected pressures.

### Claim 13

A borehole pump system comprising an immersion pump (20) and a riser (15) accommodated in a borehole (10), wherein a water treatment system comprising at least one water filter (45) for cleaning pumped water is disposed in the riser and the borehole pump system further comprises an outlet (70) which is designed for discharge of residues held back in the water filter (45).