# US 2017/0254192 A1 · Method for introducing a borehole into the soil and soil drilling device and use thereof

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- Number: US 2017/0254192 A1
- Document ID: US20170254192A1
- Status: Published application
- Kind: A1
- Application number: 15/446,621
- Filed: 2017-03-01
- Published: 2017-09-07
- Earliest claimed: 2016-03-03
- Assignees: TRACTO-TECHNIK GmbH & Co. KG
- Applicants: TRACTO-TECHNIK GmbH & Co. KG
- Inventors: Hans-Joachim BAYER
- Web page: https://patentgrep.com/patent/US20170254192A1

## CPC

- E21B 47/024: of devices in the borehole (determining slope or direction of the borehole E21B47/022)
- E21B 47/0228: using electromagnetic energy or detectors therefor
- E21B 47/092: by detecting magnetic anomalies
- E21B 7/046: {horizontal drilling (drilling with mechanical conveying means E21B7/003)}
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS

## Abstract

A method for introducing a borehole into the ground includes advancing at least two drill heads, detecting one of the two drill heads is detected by a detection unit on the other drill head, and adapting the direction of advance of at least one of the drill heads relative to the other drill head.

## Claims

### Claim at position 1

-10. (canceled)

### Claim 11

A method for introducing a borehole into the ground with converging drill heads, comprising:
detecting, by a detection unit on a first drill head, the first drill head advancing in a first direction, of a second drill head, the second drill head advancing in a second direction; and
responsive to the detecting of the second drill head, adapting of at least one of the first direction relative to the second direction and the second direction relative to the first direction.

### Claim 12 (depends on 11)

The method according to claim 11, wherein the detecting comprises emission and reception of electromagnetic radiation by the detection unit.

### Claim 13 (depends on 12)

The method according to claim 12, wherein the emitting and receiving of electromagnetic radiation comprises emitting and receiving of radar waves by the detection unit.

### Claim 14 (depends on 11)

The method according to claim 11, wherein the detecting comprises detecting a pitch of the second drill head by the detection unit.

### Claim 15 (depends on 11)

The method according to claim 11, wherein the detecting comprises detecting a roll of the second drill head.

### Claim 16 (depends on 11)

The method according to claim 11, wherein the detecting comprises detecting at least one of a height deviation and a side deviation of the second drill head.

### Claim 17 (depends on 11)

The method according to claim 11, further comprising comparing, by a computer unit of the first drill head, a detected received pattern with a stored comparison pattern, and, based on the comparing, output one or more of a pitch, roll, side deviation and height deviation of the second drill head.

### Claim 18 (depends on 11)

The method according to claim 11, wherein the adapting comprises aligning the first and second drill heads.

### Claim 19 (depends on 11)

The method according to claim 11, further comprising detecting a rock loosening zone in front of the first drill head.

### Claim 20 (depends on 11)

The method according to claim 11, further comprising retracting the second drill head and advancing the first drill head into a borehole of the second drill head.

### Claim 21

A soil drilling device, comprising:
a drill head;
a detection unit adjacent to the drill head, configured to detect an alignment of another drill head;
an orientation unit in communication with the detection unit, and configured to, responsive to the detected alignment of the another drill head, modify a direction of advance of the drill head.

### Claim 22 (depends on 21)

The soil drilling device of claim 21, further comprising a computer unit configured to compare a pattern detected by the detection unit with a stored comparison pattern.

### Claim 23 (depends on 22)

The soil drilling device of claim 22, wherein the computer unit is further configured to, based on the comparing, output one or more of a pitch, roll, side deviation and height deviation of the another drill head.

### Claim 24 (depends on 21)

The soil drilling device of claim 21, wherein the detection unit comprises a radar emitter and receiver.

### Claim 25 (depends on 21)

The soil drilling device of claim 21, wherein the computer unit is further configured to detect at least one of a height deviation and a side deviation of the another drill head.

### Claim 26 (depends on 21)

The soil drilling device of claim 21, wherein the direction of advance is adapted responsive to exceeding of a predetermined deviation between the detected pattern and the comparison pattern.