Corrodible triggering elements for use with subterranean borehole tools having expandable members and related methods
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-010/32
C22C-001/04
C22C-032/00
B22F-007/08
B22F-005/00
출원번호
US-0116875
(2011-05-26)
등록번호
US-8844635
(2014-09-30)
발명자
/ 주소
Oxford, James Andy
출원인 / 주소
Baker Hughes Incorporated
대리인 / 주소
TraskBritt
인용정보
피인용 횟수 :
9인용 특허 :
59
초록
Expandable apparatus include a triggering element comprising an at least partially corrodible composite material. Methods are used to trigger expandable apparatus using such a triggering element and to form such triggering elements for use with expandable apparatus.
대표청구항▼
1. An expandable apparatus for use in a subterranean borehole, comprising: a tubular body having a longitudinal bore and at least one opening in a wall of the tubular body;at least one member positioned within the at least one opening in the wall of the tubular body, the at least one member configur
1. An expandable apparatus for use in a subterranean borehole, comprising: a tubular body having a longitudinal bore and at least one opening in a wall of the tubular body;at least one member positioned within the at least one opening in the wall of the tubular body, the at least one member configured to move between a retracted position and an extended position; anda triggering element comprising a composite material, the composite material comprising a discontinuous metallic phase dispersed within a corrodible matrix phase, the metallic phase comprising a metal or metal alloy, a majority of the corrodible matrix phase comprising at least one of a ceramic and an intermetallic compound, a majority of the at least one of the ceramic and the intermetallic compound comprising magnesium and at least one of aluminum and nickel. 2. The expandable apparatus of claim 1, wherein the expandable apparatus comprises at least one of an expandable reamer apparatus and an expandable stabilizer apparatus. 3. The expandable apparatus of claim 1, wherein the expandable apparatus comprises a seat for receiving the triggering element. 4. The expandable apparatus of claim 3, wherein the seat comprises an opening at a downhole end thereof enabling the triggering element, in an at least partially corroded condition, to pass through the seat and exit the expandable apparatus through the longitudinal bore. 5. The expandable apparatus of claim 1, further comprising: a push sleeve disposed within the longitudinal bore of the tubular body and coupled to the at least one member, the push sleeve configured to move the at least one member from the retracted position to the extended position responsive to a flow rate of drilling fluid passing through the longitudinal bore; anda traveling sleeve positioned within the longitudinal bore of the tubular body and partially within the push sleeve, the traveling sleeve comprising a seat for receiving and securing the triggering element. 6. The expandable apparatus of claim 1, wherein the composite material of the body has a compressive yield strength of at least about 250 MPa. 7. The expandable apparatus of claim 1, wherein the discontinuous metallic phase comprises nanoparticles of the metal or metal alloy. 8. The expandable apparatus of claim 1, wherein the discontinuous metallic phase comprises commercially pure magnesium or a magnesium alloy. 9. The expandable apparatus of claim 1, wherein the corrodible matrix phase further comprises at least one of oxygen, magnesium oxide, aluminum oxide, and nickel oxide. 10. The expandable apparatus of claim 1, wherein the corrodible matrix phase is configured to corrode in at least one of a brine solution and an acidic solution. 11. The expandable apparatus of claim 10, wherein the triggering element comprises: a shell defining an outer surface of the triggering element comprising a first material;a core comprising a second material being substantially surrounded by the shell, wherein the second material comprises the composite material and wherein the first material is formed from a relatively non-corrodible material as compared to the composite material; andat least one perforation formed in the triggering element, the at least one perforation extending from the outer surface of the triggering element through the first material of the shell and into the second material of the core by at least some depth and being dimensioned to control a rate of intrusion of the at least one of the brine solution and the acidic solution into at least a portion of the triggering element. 12. The expandable apparatus of claim 1, wherein the triggering element comprises: at least two or more portions formed from a relatively non-corrodible material as compared to the composite material of the triggering element; andan adherent corrodible material comprising the composite material binding the at least two parts of the ball together. 13. The expandable apparatus of claim 1, wherein the triggering element comprises at least one stress riser extending through an outer surface of the triggering element and into the triggering element, the at least one stress riser configured to concentrate stress in order to accelerate structural degradation of the triggering element. 14. The expandable apparatus of claim 1, wherein the triggering element comprises a shell defining an outer surface of the triggering element comprising a first material and a core comprising a second material being substantially surrounded by the shell, at least one stress riser extending through the outer surface of the triggering element and into the shell of the triggering element, the at least one stress riser configured to concentrate stress in order to accelerate structural degradation of the triggering element, wherein the second material comprises the composite material and wherein the first material is formed from a relatively non-corrodible material as compared to the composite material. 15. The expandable apparatus of claim 1, wherein the composite material has a density of about 2.5 g/cm3 or less at room temperature. 16. A method of operating an expandable apparatus for use in a subterranean borehole, comprising: providing an expandable apparatus for use in a subterranean borehole, comprising: a tubular body having a longitudinal bore and at least one opening in a wall of the tubular body;at least one member positioned within the at least one opening in the wall of the tubular body, the at least one member configured to move between a retracted position and an extended position; anda triggering element comprising a composite material, the composite material comprising a discontinuous metallic phase dispersed within a corrodible matrix phase, the metallic phase comprising a metal or metal alloy, a majority of the corrodible matrix phase comprising at least one of a ceramic and an intermetallic compound, a majority of the at least one of the ceramic and the intermetallic compound primarily comprising magnesium and at least one of aluminum and nickel; anddisposing the triggering element in a fluid flow path passing through a longitudinal bore of a tubular body of the expandable apparatus;seating the triggering element in a seat formed in the tubular body of the expandable apparatus;triggering the expandable apparatus comprising moving at least one member of the expandable apparatus from a retracted position to an extended position;at least partially corroding a portion of the triggering element to at least partially remove the triggering element from the seat; andmoving the at least one member of the expandable apparatus from the extended position to the retracted position responsive at least in part to the at least partial removal of the triggering element. 17. The method of claim 16, wherein at least partially corroding a portion of the triggering element comprises selectively increasing at least one of a salt and an acid content of drilling fluid being passing through the expandable apparatus. 18. The method of claim 16, further comprising, after moving the at least one member of the expandable apparatus from the extended position to the retracted position: disposing another triggering element in the fluid flow path; andtriggering the expandable apparatus comprising moving the at least one member of the expandable apparatus from the retracted position to the extended position. 19. The method of claim 18, further comprising: at least partially corroding a portion of the another triggering element comprising a corrodible composite material to remove the another triggering element from the seat; andmoving the at least one member of the expandable apparatus from the extended position to the retracted position responsive at least in part to the at least partial removal of the another triggering element. 20. An expandable apparatus for use in a subterranean borehole, comprising: a tubular body having a longitudinal bore and at least one opening in a wall of the tubular body;at least one member positioned within the at least one opening in the wall of the tubular body, the at least one member configured to move between a retracted position and an extended position;a triggering element comprising a core comprising a composite material, the composite material comprising a discontinuous metallic phase dispersed within a corrodible matrix phase, the metallic phase comprising a metal or metal alloy, the corrodible matrix phase comprising a majority of at least one of a ceramic and an intermetallic compound comprising a majority of magnesium and at least one of aluminum and nickel, wherein the triggering element comprises a shell defining an outer surface of the triggering element substantially surrounding the core, wherein the shell is formed from a relatively non-corrodible material as compared to the composite material of the core; andat least one perforation extending from the outer surface of the triggering element through the shell and exposing a portion of the core. 21. The expandable apparatus of claim 20, wherein the at least one perforation extends into the core of the triggering element by at least some depth.
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