Multi-component disappearing tripping ball and method for making the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-033/12
E21B-029/02
출원번호
US-0633677
(2009-12-08)
등록번호
US-8327931
(2012-12-11)
발명자
/ 주소
Agrawal, Gaurav
Xu, Zhiyue
출원인 / 주소
Baker Hughes Incorporated
대리인 / 주소
Cantor Colburn LLP
인용정보
피인용 횟수 :
57인용 특허 :
353
초록
A tripping ball including two or more dissolution resistant parts of a ball and an adherent dissolvable material binding the two or more parts of the ball together. A method for making a tripping ball is also included.
대표청구항▼
1. A tripping ball comprising: two or more dissolution resistant parts of a ball; andan adherent dissolvable material binding the two or more parts of the ball together, the adherent material operatively arranged to dissolve for enabling the two or more dissolution resistant parts of the ball to sep
1. A tripping ball comprising: two or more dissolution resistant parts of a ball; andan adherent dissolvable material binding the two or more parts of the ball together, the adherent material operatively arranged to dissolve for enabling the two or more dissolution resistant parts of the ball to separate from each other. 2. A tripping ball as claimed in claim 1 wherein the parts of the ball are hemispheres. 3. A tripping ball as claimed in claim 1 wherein the parts of the ball are quarterspheres. 4. A tripping ball as claimed in claim 1 wherein the parts of the ball include at least one surface that is a portion of a sphere. 5. A tripping ball as claimed in claim 1 wherein the parts of the ball comprise metallic material. 6. A tripping ball as claimed in claim 1 wherein the parts of the ball comprise polymeric material. 7. A tripping ball as claimed in claim 1 wherein the adherent dissolvable material comprises magnesium. 8. A tripping ball as claimed in claim 1 wherein the adherent dissolvable material includes one or more holes therein. 9. A tripping ball as claimed in claim 8 wherein the adherent dissolvable material is drilled to produce the one or more holes. 10. A tripping ball as claimed in claim 8 wherein the holes are disposed at least in part in the parts of the ball. 11. A tripping ball as claimed in claim 8 wherein the holes are configured to provide a selective flow rate of wellbore fluids into the tripping ball. 12. A tripping ball as claimed in claim 1 wherein one or more of the parts of the ball are selectively holed. 13. A tripping ball as claimed in claim 1 wherein the adherent dissolvable material is formed in an open cellular structure. 14. A tripping ball as claimed in claim 1 wherein the adherent dissolvable material is formed to provide fluid pathways therein. 15. A tripping ball as claimed in claim 1 wherein the adherent dissolvable material is responsive to wellbore fluids. 16. A tripping ball as claimed in claim 1 wherein the adherent dissolvable material is configurable for a selected dissolution time when exposed to downhole conditions. 17. A tripping ball as claimed in claim 1 wherein the adherent dissolvable material comprises: a substantially-continuous, cellular nanomatrix comprising a nanomatrix material;a plurality of dispersed particles comprising a particle core material that comprises Mg, Al, Zn or Mn, or a combination thereof, dispersed in the cellular nanomatrix; anda solid state bond layer extending throughout the cellular nanomatrix between the dispersed particles. 18. A tripping ball as claimed in claim 17, wherein the nanomatrix material has a melting temperature (TM), the particle core material has a melting temperature (TDP); wherein the adherent dissolvable material is sinterable in a solid-state at a sintering temperature (TS), and TS is less than TM and TDP. 19. A tripping ball as claimed in claim 17, wherein the dispersed particles comprise Mg—Zn, Mg—Zn, Mg—Al, Mg—Mn, or Mg—Zn—Y. 20. A tripping ball as claimed in claim 17, wherein the dispersed particles comprise an Mg—Al—X alloy, wherein X comprises Zn, Mn, Si, Ca or Y, or a combination thereof. 21. A tripping ball as claimed in claim 17, wherein the dispersed particles further comprise a rare earth element. 22. A tripping ball as claimed in claim 17, wherein the dispersed particles have an average particle size of about 5 μm to about 300 μm. 23. A tripping ball as claimed in claim 17, wherein the dispersed particles have an equiaxed particle shape. 24. A tripping ball as claimed in claim 17, further comprising a plurality of dispersed second particles, wherein the dispersed second particles are also dispersed within the cellular nanomatrix and with respect to the dispersed particles. 25. A tripping ball as claimed in claim 24, wherein the dispersed second particles comprise Fe, Ni, Co or Cu, or oxides, nitrides or carbides thereof, or a combination of any of the aforementioned materials. 26. A tripping ball as claimed in claim 17, wherein the nanomatrix material comprises Al, Zn, Mn, Mg, Mo, W, Cu, Fe, Si, Ca, Co, Ta, Re or Ni, or an oxide, carbide or nitride thereof, or a combination of any of the aforementioned materials, and wherein the nanomatrix material has a chemical composition and the particle core material has a chemical composition that is different than the chemical composition of the nanomatrix material. 27. A tripping ball as claimed in claim 17, wherein the nanomatrix has an average thickness of about 50 nm to about 5000 nm. 28. A tripping ball as claimed in claim 17, wherein the adherent dissolvable material is formed from a sintered powder comprising a plurality of powder particles, each powder particle having a particle core that upon sintering comprises a dispersed particle and a single metallic coating layer disposed thereon, and wherein the nanomatrix between adjacent ones of the plurality of dispersed particles comprises the single metallic coating layer of one powder particle, the bond layer and the single metallic coating layer of another of the powder particles. 29. A tripping ball as claimed in claim 17, wherein the adherent dissolvable material is formed from a sintered powder comprising a plurality of powder particles, each powder particle having a particle core that upon sintering comprises a dispersed particle and a plurality of metallic coating layers disposed thereon, and wherein the nanomatrix between adjacent ones of the plurality of dispersed particles comprises the plurality of metallic coating layers of one powder particle, the bond layer and plurality of metallic coating layers of another of the powder particles, and wherein adjacent ones of the plurality of metallic coating layers have different chemical compositions. 30. A tripping ball as claimed in claim 17, wherein the dispersed particles comprise Mg and the adherent dissolvable material has a room temperature compressive strength of at least about 37 ksi. 31. A tripping ball as claimed in claim 17, wherein the dispersed particles comprise Mg and the adherent dissolvable material has a room temperature shear strength of at least about 20 ksi. 32. A tripping ball as claimed in claim 17, wherein the adherent dissolvable material has predetermined theoretical density and an actual density that is substantially equal to the predetermined theoretical density. 33. A tripping ball as claimed in claim 17, wherein the dispersed particles comprise Mg and the adherent dissolvable material has an actual density of about 1.738 g/cm3 to about 2.50 g/cm3. 34. A tripping ball as claimed in claim 17, wherein the particle core comprises Mg and the adherent dissolvable material is selectably dissolvable at a rate of about 0 to about 7000 mg/cm2/hr.
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