1. A process for effecting biocidal activity in an aqueous well fracturing fluid, which process comprises blending with said aqueous well fracturing fluid a biocidally-effective amount of a sulfamate stabilized, bromine-based biocide formed from (A) a halogen source which is (i) bromine chloride, (ii) bromine and chlorine, (iii) bromine, or (iv) a mixture of any two or more of (i), (ii), and (iii), (B) a source of sulfamate anions, (C) alkali metal base, and (D) water, in amounts so that prior to blending said biocide has an active bromine content of at least 50,000 ppm, and an atom ratio of nitrogen to active bromine originating from (A) and (B) that is greater than about 0.93.
2. A process as in claim 1 wherein said biocidally-effective amount provides in the range of about 1 to about 10 ppm of active bromine species in said aqueous well fracturing fluid.
3. A process as in claim 1 wherein said aqueous well fracturing fluid is a gel-type aqueous well fracturing fluid.
4. A process as in claim 3 wherein said gel-type aqueous well fracturing fluid comprises a guar gum gelation agent.
5. A process as in claim 1 wherein said aqueous well fracturing fluid is a slickwater-type aqueous well fracturing fluid.
6. A process as in claim 5 wherein said slickwater-type aqueous well fracturing fluid comprises a polyacrylamide viscosity reducing agent.
7. A process as in claim 1 wherein said aqueous well fracturing fluid contains anaerobic bacteria.
8. A process as in claim 1 wherein said aqueous well fracturing fluid contains sulfate-reducing bacteria.
9. A process as in claim 1 wherein said aqueous well fracturing fluid contains aerobic bacteria.
10. A process as in claim 1 wherein said aqueous well fracturing fluid contains acid-producing bacteria.
11. A process as in claim 1 wherein said active bromine content is at least 100,000 ppm and said atom ratio is at least about 1.0.
12. A process as in claim 1 wherein said alkali metal base comprises a sodium base.
13. A process as in claim 1 wherein said aqueous well fracturing fluid is blended with from about 4 to about 80 ppm of active bromine as said biocide.
14. A process as in claim 1 wherein said halogen source consists essentially of bromine chloride, wherein said alkali metal base is sodium hydroxide, wherein the active bromine content of the biocide composition is at least 140,000 ppm, wherein the atom ratio of nitrogen to active bromine originating from (A) and (B) is at least about 1.1, and wherein the pH of the biocide is at least about 13.
15. A process as in claim 1 wherein said aqueous well fracturing fluid is injected into a well which contains a consumable amount of hydrogen sulfide.
16. A process as in any of claims 11, 14, or 15 wherein said biocidally-effective amount provides in the range of about 1 to about 10 ppm of active bromine species in said aqueous well fracturing fluid.
17. A process as in claim 16 wherein said aqueous well fracturing fluid is a gel-type fracturing fluid.
18. A process as in claim 17 wherein said gel-type fracturing fluid comprises a guar gum gelation agent.
19. A process as in any of claim 11 or 14 wherein said aqueous well fracturing fluid is a slickwater-type fracturing fluid.
20. A process as in claim 19 wherein said slickwater-type fracturing fluid comprises a polyacrylamide viscosity reducing agent.
21. A process as in claim 11 wherein said aqueous well fracturing fluid contains anaerobic bacteria.
22. A process as in claim 11 wherein said aqueous well fracturing fluid contains sulfate-reducing bacteria.
23. A process as in claim 11 wherein said aqueous well fracturing fluid contains aerobic bacteria.
24. A process as in claim 11 wherein said aqueous well fracturing fluid contains acid-producing bacteria.
25. A process as in claim 11 wherein said aqueous well fracturing fluid is a gel-type fracturing fluid.
26. A process as in claim 14 wherein said aqueous well fracturing fluid is a gel-type fracturing fluid.
27. A process as in claim 16 wherein said aqueous well fracturing fluid is a slickwater-type fracturing fluid.
28. A process as in any of claim 2, 7, 8, or 9 wherein said aqueous well fracturing fluid is a slickwater-type fracturing fluid.
29. A composition for use in work over of subterranean oil and gas wells, said composition being an aqueous well slickwater-type fracturing fluid blended with a biocidally-effective amount of an aqueous sulfamate stabilized, bromine-based biocide formed from (A) a halogen source which is (i) bromine chloride, (ii) bromine and chlorine, (iii) bromine, or (iv) a mixture of any two or more of (i), (ii), and (iii), (B) a source of sulfamate anions, (C) alkali metal base, and (D) water, in amounts so that prior to blending said biocide has an active bromine content of at least 50,000 ppm, and an atom ratio of nitrogen to active bromine originating from (A) and (B) that is greater than about 0.93.
30. A composition as in claim 29 wherein said slickwater-type fracturing fluid comprises a polyacrylamide viscosity reducing agent.
31. A composition as in claim 29 wherein said halogen source consists essentially of bromine chloride, wherein said alkali metal base is sodium hydroxide, wherein the active bromine content of the biocide composition is at least 140,000 ppm, wherein the atom ratio of nitrogen to active bromine originating from (A) and (B) is at least about 1.1, and wherein the pH of the biocide is at least about 13.
32. A composition as in claim 31 wherein said slickwater-type fracturing fluid comprises a polyacrylamide viscosity reducing agent.
33. A composition as in any of claim 29 or 30 wherein said alkali metal base comprises a sodium base, said active bromine content is at least 100,000 ppm, said atom ratio is at least about 1, and the pH of said biocide is at least about 13.
34. A composition as in any of claims 29, 30, or 31 wherein said aqueous well slickwater-type fracturing fluid is blended with from about 4 to about 80 ppm of active bromine as said biocide.
35. A process of producing an aqueous well fracturing fluid of the gel type or the slickwater type, which process comprises including as a component thereof a biocidally-effective amount of a sulfamate stabilized, bromine-based biocide formed from (A) a halogen source which is (i) bromine chloride, (ii) bromine and chlorine, (iii) bromine, or (iv) a mixture of any two or more of (i), (ii), and (iii), (B) a source of sulfamate anions, (C) alkali metal base, and (D) water, in amounts so that prior to blending said biocide has an active bromine content of at least 50,000 ppm, and an atom ratio of nitrogen to active bromine originating from (A) and (B) that is greater than about 0.93.
36. A process as in claim 35 wherein said aqueous well fracturing fluid is a gel-type fracturing fluid, and wherein said gel-type fracturing fluid comprises a guar gum gelation agent.
37. A process as in claim 35 wherein said aqueous well fracturing fluid is a slickwater-type fracturing fluid, and wherein said slickwater-type fracturing fluid comprises a polyacrylamide viscosity reducing agent.
38. A process as in claim 35 wherein said alkali metal base comprises a sodium base, said active bromine content is at least 100,000 ppm, said atom ratio is at least about 1, and the pH of said biocide is at least about 13.
39. A process as in claim 35 wherein said halogen source consists essentially of bromine chloride, wherein said alkali metal base is sodium hydroxide, wherein the active bromine content of the biocide composition is at least 140,000 ppm, wherein the atom ratio of nitrogen to active bromine originating from (A) and (B) is at least about 1.1, and wherein the pH of the biocide is at least about 13.
40. A process as in claim 35 wherein said aqueous well fracturing fluid is blended with from about 4 to about 80 ppm of active bromine as said biocide.
41. A process as in claim 35 wherein said biocidally-effective amount provides in the range of about 1 to about 10 ppm of active bromine species in said aqueous well fracturing fluid.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A staple implant for influencing the growth in bone regions bordering an epiphyseal plate, said staple implant comprising
a transverse web and
anchoring limbs provided at the ends of the transverse web, oriented parallel to each other and terminating in points, wherein the anchoring limbs, after they have been inserted into the bone, form fixation points on one side of said bone, to both sides of the epiphyseal plate,
wherein the transverse web comprises at least one tapered zone, which is plastically deformable under a flexural load and which is configured in any desired position and shape without abrupt transitions between the fixation points.
2. The staple implant as claimed in claim 1, made of a superplastic material having grain sizes of between 1 nm and 1 \u03bcm.
3. The staple implant as claimed in claim 1, wherein the at least one tapered zone is provided centrally in the transverse web, and its bending area is provided substantially symmetrically thereto.
4. The staple implant as claimed in claim 1, wherein the at least one tapered zone is provided on the transverse web symmetrically with respect to the longitudinal axis.
5. The staple implant as claimed in claim 1, wherein blind bores with internal threading are provided, in alignment with the limb axes, in order to allow an impaction or extraction instrument to be secured releasably with a force-fit connection in the transverse web.
6. The staple implant as claimed in claim 1, wherein the transverse web is provided with recesses or beads for securing an impaction instrument by clamping.
7. The staple implant as claimed in claim 1, wherein the bending area of the at least one tapered zone is provided with a cross section that can be easily separated with a separating instrument.
8. The staple implant as claimed in claim 1, wherein the transverse web and the anchoring limbs are provided with different cross-sectional shapes.
9. The staple implant as claimed in claim 1, wherein the anchoring limbs are each provided with a through-channel extending in the longitudinal direction of the anchoring limbs.
10. The staple implant as claimed in claim 9, wherein the through-channel, in one or both, anchoring limbs, has an internal thread at least in part.
11. The staple implant as claimed in claim 1, wherein the anchoring limbs, at least on parts of their outer surface, have anchoring means with protruding surface contours.
12. The staple implant as claimed in claim 1, wherein the transverse web is formed, at least in a central area, with a flat profile in cross section.
13. (canceled)
14. The staple implant as claimed in claim 1, wherein the transverse web, viewed from above, is wider at least in the central area compared to the ends of the transverse web.
15. The staple implant as claimed in claim 1, wherein the anchoring limbs, viewed from the front, are offset parallel to each other in such a way that the anchoring limbs are arranged with the transverse web in a trapezoid shape.