Formation coring apparatus and methods
First Claim
Patent Images
1. An apparatus, comprising:
- a downhole tool configured for conveyance within a wellbore extending into a subterranean formation, wherein the downhole tool comprises a coring tool comprising;
a sidewall coring assembly having a coring bit;
an extension system configured to extend the coring bit from the sidewall coring assembly at a plurality of angles with respect to an axis of the downhole tool; and
a rotation system configured to rotate the sidewall coring assembly to each of the plurality of angles, wherein the rotation system comprises;
a hydraulic piston movable to rotate the coring bit to each of the plurality of angles; and
a flow control valve operable to regulate fluid flow to the hydraulic piston based on a detected position of the hydraulic piston.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods comprising: lowering a downhole tool into a wellbore extending into a subterranean formation, wherein the downhole tool comprises a coring tool and a measurement tool; performing a measurement regarding the formation using the measurement tool; determining a section of interest within the formation relative to an axis of the coring tool based on the measurement; orienting a coring bit of the coring tool relative to the section of interest; and extending the oriented coring bit into the formation.
48 Citations
14 Claims
-
1. An apparatus, comprising:
-
a downhole tool configured for conveyance within a wellbore extending into a subterranean formation, wherein the downhole tool comprises a coring tool comprising; a sidewall coring assembly having a coring bit; an extension system configured to extend the coring bit from the sidewall coring assembly at a plurality of angles with respect to an axis of the downhole tool; and a rotation system configured to rotate the sidewall coring assembly to each of the plurality of angles, wherein the rotation system comprises; a hydraulic piston movable to rotate the coring bit to each of the plurality of angles; and a flow control valve operable to regulate fluid flow to the hydraulic piston based on a detected position of the hydraulic piston. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An apparatus, comprising:
-
a downhole tool configured for conveyance within a wellbore extending into a subterranean formation, wherein the downhole tool comprises a coring tool comprising; a sidewall coring assembly having a coring bit; an extension system configured to extend the coring bit from the sidewall coring assembly at a plurality of angles with respect to an axis of the downhole tool; and a rotation system configured to rotate the sidewall coring assembly to each of the plurality of angles, wherein the rotation system comprises; a piston movable to rotate the coring bit to each of the plurality of angles; a position sensor to detect a position of the piston; and a controller configured to determine an angular position of the coring bit based on the detected position. - View Dependent Claims (10, 11)
-
-
12. An apparatus, comprising:
-
a downhole tool configured for conveyance within a wellbore extending into a subterranean formation, wherein the downhole tool comprises a coring tool comprising; a sidewall coring assembly having a coring bit; an extension system configured to extend the coring bit from the sidewall coring assembly at a plurality of angles with respect to an axis of the downhole tool; and a rotation system configured to rotate the sidewall coring assembly to each of the plurality of angles, wherein the rotation system comprises; a piston movable to rotate the coring bit to each of the plurality of angles; a position sensor to detect a position of the piston; and a controller configured to move the piston based on the detected position to maintain the coring bit at a selected angle of the plurality of angles during rotation of the coring bit. - View Dependent Claims (13, 14)
-
Specification