# US 2017/0284183 A1 · Method for improving survey measurement density along a borehole

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- Number: US 2017/0284183 A1
- Document ID: US20170284183A1
- Status: Published application
- Kind: A1
- Application number: 15/476,107
- Filed: 2017-03-31
- Published: 2017-10-05
- Earliest claimed: 2016-03-31
- Assignees: Scientific Drilling International, Inc.
- Applicants: Scientific Drilling International, Inc.
- Inventors: Marc Willerth; Benjamin C. Hawkinson; Brian D. Gleason
- Web page: https://patentgrep.com/patent/US20170284183A1

## CPC

- G01V 11/002: {Details, e.g. power supply systems for logging instruments, transmitting or recording data, specially adapted for well logging, also if the prospecting method is irrelevant (means for transmitting well survey signals E21B47/12; signal transmission systems in general G08C; transmission in general H04B)}
- E21B 47/024: of devices in the borehole (determining slope or direction of the borehole E21B47/022)
- G01V: GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS (means for indicating the location of accidentally buried, e.g. snow-buried, persons A63B29/02)
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS

## Abstract

A method may include providing a drill string including a measurement tool. The drill string may be positioned in a wellbore. The method may include taking a measurement with the measurement tool at a first location. The method may include coupling a pipe stand including a first selected number of tubular segments to the drill string, the first selected number being two or more. The method may include lowering or advancing the drill string into the wellbore the length of the pipe stand. The method may include taking a measurement with the measurement tool at a second location. The method may include raising the drill string the length of a tubular segment. The method may include removing a second selected number of tubular segments from the drill string, the second selected number different from the first selected number. The method may include taking a measurement with the measurement tool at a third location. The method may include raising the drill string the length of the first selected number of tubular segments. The method may include removing the first selected number of tubular segments. The method may include taking a measurement with the measurement tool at a fourth location.

## Claims

### Claim 1

A method comprising:
providing a drill string, the drill string including a measurement tool, the drill string positioned in a wellbore;
taking a measurement of the wellbore with the measurement tool at a first location;
coupling a pipe stand including a first selected number of tubular segments to the drill string, the first selected number being two or more;
lowering or advancing the drill string into the wellbore the length of the pipe stand;
taking a measurement of the wellbore with the measurement tool at a second location;
raising the drill string the length of a second selected number of tubular segments;
removing the second selected number of tubular segments from the drill string, the second selected number different from the first selected number;
taking a measurement of the wellbore with the measurement tool at a third location;
raising the drill string the length of the first selected number of tubular segments;
removing the first selected number of tubular segments; and
taking a measurement of the wellbore with the measurement tool at a fourth location.

### Claim 2 (depends on 1)

The method of claim 1, further comprising:
raising the drill string the length of the first selected number of tubular segments;
removing the first selected number of tubular segments; and
taking a measurement of the wellbore with the measurement tool at a fifth location.

### Claim 3 (depends on 1)

The method of claim 1, wherein the first selected number of tubular segments is three tubular segments, and the second selected number of tubular segments is one or two tubular segments.

### Claim 4 (depends on 1)

The method of claim 1, further comprising:
adding a third selected number of tubular segments to the drill string, the third selected number different from the first selected number and second selected number;
lowering the drill string the length of the third selected number of tubular segments; and
taking a measurement of the wellbore with the measurement tool at a fifth location.

### Claim 5 (depends on 4)

The method of claim 4, wherein the first selected number is 3, the second selected number is 2, and the third selected number is 1.

### Claim 6 (depends on 4)

The method of claim 4, wherein the first selected number is 3, the second selected number is 1, and the third selected number is 2.

### Claim 7 (depends on 1)

The method of claim 1, further comprising:
raising the drill string the length of a third selected number of tubular segments;
removing the third selected number of tubular segments from the drill string, the third selected number different from the first selected number;
lowering the drill string the length of the first selected number of tubular segments; and
taking a measurement of the wellbore with the measurement tool at a fifth location.

### Claim 8 (depends on 7)

The method of claim 7, wherein the first selected number is 3 and the second and third selected numbers are 1.

### Claim 9

A method comprising:
providing a drill string, the drill string including a measurement tool, the drill string positioned in a wellbore;
taking a measurement of the wellbore with the measurement tool at a first location;
raising the drill string the length of a pipe stand including a first selected number of tubular segments from the drill string, the first selected number being two or more;
removing the pipe stand from the drill string;
taking a measurement of the wellbore with the measurement tool at a second location;
adding a second selected number of tubular segments to the drill string, the second selected number different from the first selected number;
lowering the drill string the length of the second selected number of tubular segments;
taking a measurement of the wellbore with the measurement tool at a third location;
adding a second pipe stand to the drill string, the pipe stand including the first selected number of tubular segments;
lowering the drill string the length of the pipe stand; and
taking a measurement of the wellbore with the measurement tool at a fourth location.

### Claim 10 (depends on 9)

The method of claim 9, further comprising:
adding a third selected number of tubular segments to the drill string, the third selected number different from the first selected number and second selected number;
raising the drill string the length of the third selected number of tubular segments; and
taking a measurement of the wellbore with the measurement tool at a fifth location.

### Claim 11 (depends on 10)

The method of claim 10, wherein the first selected number is 3, the second selected number is 2, and the third selected number is 1.

### Claim 12 (depends on 10)

The method of claim 10, wherein the first selected number is 3, the second selected number is 1, and the third selected number is 2.

### Claim 13 (depends on 9)

The method of claim 9, further comprising:
raising the drill string the length of a third selected number of tubular segments, the third selected number different from the first selected number;
taking a measurement of the wellbore with the measurement tool at a fifth location;
removing the third selected number of tubular segments from the drill string;
raising the drill string the length of the first selected number of tubular segments; and
taking a measurement of the wellbore with the measurement tool at a sixth location.

### Claim 14 (depends on 13)

The method of claim 13, wherein the first selected number is 3 and the second and third selected numbers are 1.
