Power generation via drillstring pipe reciprocation

Patent metadata

Field	Value
Publication number	US-9309748-B2
Application number	US-201213721840-A
Country	US
Kind code	B2
Filing date	Dec 20, 2012
Priority date	Dec 20, 2012
Publication date	Apr 12, 2016
Grant date	Apr 12, 2016

Abstract

A wireline configurable toolstring is conveyed within a wellbore extending into a subterranean formation via a tubular string to which the wireline configurable tool string is coupled in a manner permitting relative motion of the wireline configurable toolstring and the tubular string. The wireline configurable toolstring converts rotary motion imparted by rotation of the tubular string, or by fluid flow resulting from reciprocation of the tubular string, into electrical energy. The wireline configurable toolstring also comprises at least one wireline configurable instrument powered by the electrical energy.

First claim

What is claimed is:

1. A method, comprising:
conveying a wireline configurable toolstring within a wellbore extending into a subterranean formation via a tubular string to which the wireline configurable tool string is coupled in a manner permitting relative reciprocation of the wireline configurable toolstring and the tubular string;
anchoring the wireline configurable toolstring within the wellbore;
reciprocating the tubular string relative to the wireline configurable toolstring within the wellbore while the wireline configurable toolstring is anchored within the wellbore; and
powering at least one wireline configurable instrument with electrical energy produced by converting fluid flow resulting from the tubular string reciprocation into the electrical energy, wherein the fluid flow comprises at least one of:
fluid flow into an internal chamber of the wireline configurable toolstring in response to the axial reciprocation of the tubular string relative to the wireline configurable toolstring; or
fluid flow out of the internal chamber of the wireline configurable toolstring in response to the axial reciprocation of the tubular string relative to the wireline configurable toolstring; and

the at least one of fluid flow into the internal chamber and fluid flow out of the internal chamber imparts rotary motion to an impeller of the wireline configurable toolstring, and wherein the rotary motion of the impeller at least indirectly imparts rotary motion to an input of an alternator of the wireline configurable toolstring.

2. The method of claim 1 comprising measuring a characteristic of the subterranean formation with the wireline configurable instrument during the anchoring and the reciprocating.

3. The method of claim 1 further comprising subjecting the impeller to fluid flowing between the wireline configurable toolstring and surface equipment via at least one of:
an internal passage of the tubular string; and
an annulus defined between a wall of the wellbore and the tubular string.

4. The method of claim 1 wherein anchoring the wireline configurable toolstring within the wellbore comprises extending a feature of the wireline configurable toolstring into contact with a wall of the wellbore.

5. The method of claim 1 wherein the tubular string comprises a drill string.

6. The method of claim 1 wherein the tubular string comprises a wired drill pipe.

7. The method of claim 1 wherein anchoring the wireline configurable toolstring within the wellbore comprises extending a probe and backup pistons to contact a wall of the wellbore.

8. The method of claim 1 wherein anchoring the wireline configurable toolstring within the wellbore comprises inflating an expandable packer to contact a wall of the wellbore.

9. The method of claim 1 wherein anchoring the wireline configurable toolstring within the wellbore comprises extending a plurality of arms to contact a wall of the wellbore.

10. The method of claim 1 wherein reciprocating the tubular string relative to the wireline configurable toolstring comprises raising and lowering a drilling rig traveling block coupled to the tubular string.

11. The method of claim 1 wherein reciprocating the tubular string relative to the wireline configurable toolstring comprises holding a floating drilling rig traveling block stationary relative to a floating drilling rig.

Assignees

• Schlumberger Technology Corp

Inventors

• Gadot Raphael
• Morley Jan

Classifications

• E21B41/0085 Primary

  Adaptations of electric power generating means for use in boreholes · CPC title

• E21B47/09

  Locating or determining the position of objects in boreholes or wells {, e.g. the position of an extending arm}; Identifying the free or blocked portions of pipes · CPC title

• E21B47/007

  Measuring stresses in a pipe string or casing (for locating blocked portions of pipes E21B47/09) · CPC title

• E21B47/12

  Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling · CPC title

• E21B47/0006

  Fixed Constructions · mapped topic