CA2585080A1 - Methods and systems for reverse-circulation cementing in subterranean formations - Google Patents
Methods and systems for reverse-circulation cementing in subterranean formations Download PDFInfo
- Publication number
- CA2585080A1 CA2585080A1 CA002585080A CA2585080A CA2585080A1 CA 2585080 A1 CA2585080 A1 CA 2585080A1 CA 002585080 A CA002585080 A CA 002585080A CA 2585080 A CA2585080 A CA 2585080A CA 2585080 A1 CA2585080 A1 CA 2585080A1
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- CA
- Canada
- Prior art keywords
- fluid
- well bore
- casing
- cement composition
- flowing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
- E21B33/14—Methods or devices for cementing, for plugging holes, crevices, or the like for cementing casings into boreholes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/005—Monitoring or checking of cementation quality or level
Abstract
Methods and systems for reverse-circulation cementing in subterranean formations are provided. An example of a method is a method of cementing casing (3) in a subterranean well bore (1), comprising inserting a casing into the well bore, the casing comprising a casing shoe (4); equipping the casing with a well head (2), and a casing inner diameter pressure indicator (13);
flowing an equilibrium fluid (11) into the well bore; flowing a cement composition (15) into the well bore after the equilibrium fluid; determining from the well-bore pressure indicator when the well bore pressure has reached a desired value; discontinuing the flow of cement composition into the well bore upon determining that the well bore pressure has reached a desired value;
and permitting the cement composition to set in the subterranean formation.
Examples of systems include systems for cementing casing in a well bore. A
marker detector (17) may be installed to detect tag fluids (16).
flowing an equilibrium fluid (11) into the well bore; flowing a cement composition (15) into the well bore after the equilibrium fluid; determining from the well-bore pressure indicator when the well bore pressure has reached a desired value; discontinuing the flow of cement composition into the well bore upon determining that the well bore pressure has reached a desired value;
and permitting the cement composition to set in the subterranean formation.
Examples of systems include systems for cementing casing in a well bore. A
marker detector (17) may be installed to detect tag fluids (16).
Claims (80)
1. ~A method of cementing casing in a well bore, comprising:
inserting a casing into the well bore, the casing having an inner diameter and an outer surface, an annulus being defined between the outer surface of the casing and an inner wall of the well bore;
flowing an equilibrium fluid into the well bore;
flowing a cement composition into the well bore after flowing the equilibrium fluid into the well bore;
permitting the pressure in the annulus to reach equilibrium with the pressure in the inner diameter of the casing, such that flow of cement composition into the well bore ceases; and permitting the cement composition to set in the well bore.
inserting a casing into the well bore, the casing having an inner diameter and an outer surface, an annulus being defined between the outer surface of the casing and an inner wall of the well bore;
flowing an equilibrium fluid into the well bore;
flowing a cement composition into the well bore after flowing the equilibrium fluid into the well bore;
permitting the pressure in the annulus to reach equilibrium with the pressure in the inner diameter of the casing, such that flow of cement composition into the well bore ceases; and permitting the cement composition to set in the well bore.
2. ~The method of claim 1 wherein the casing comprises a well head and a casing inner diameter pressure indicator.
3. ~The method of claim 2 further comprising determining from the casing inner diameter pressure indicator when the casing inner diameter pressure has reached a desired value.
4. ~The method of claim 1 wherein flowing an equilibrium fluid into the well bore comprises flowing the equilibrium fluid into the well bore in a reverse-circulation direction.
5. ~The method of claim 1 wherein flowing a cement composition into the well bore after flowing the equilibrium fluid comprises flowing the cement composition into the well bore in a reverse-circulation direction.
6. ~The method of claim 1 wherein the cement composition has a leading edge, and wherein the leading edge of the cement composition is about adjacent a lowermost end of the casing when the flow of cement composition into the well bore ceases.
7. ~The method of claim 6 wherein the leading edge of the cement composition does not penetrate the inner diameter of the casing.
8. ~The method of claim 1 wherein the density of the equilibrium fluid is about equal to the density of the cement composition.
9. ~The method of claim 1 wherein the cement composition has a leading edge, and wherein the equilibrium fluid and the cement composition each have a density such that when the leading edge of the cement composition is about adjacent the lowermost end of the casing, the static fluid pressure of a fluid column in the annulus is about equal to a static fluid pressure of a fluid column in the casing inner diameter.
10. ~The method of claim 1 wherein the equilibrium fluid comprises a drilling fluid.
11. ~The method of claim 1 wherein the equilibrium fluid comprises a spacer fluid.
12. ~The method of claim 3 wherein the desired value of the casing inner diameter pressure is about zero.
13. ~The method of claim 1 wherein the density of the equilibrium fluid is greater than the density of the cement composition.
14. ~The method of claim 1 wherein the density of the equilibrium fluid is less than the density of the cement composition.
15.~The method of claim 13 wherein the well bore comprises a first fluid prior to flowing an equilibrium fluid into the well bore, wherein the cement composition has a leading edge, and wherein when the leading edge of the cement composition is about adjacent to a lowermost end of the casing, the static fluid pressure of a fluid column in the annulus is about equal to the static fluid pressure of a fluid column in the inner diameter of the casing.
16. ~The method of claim 14 wherein the well bore comprises a first fluid prior to flowing an equilibrium fluid into the well bore, wherein the cement composition has a leading edge, and wherein when the leading edge of the cement composition is about adjacent to a lowermost end of the casing, the static fluid pressure of a fluid column in the annulus is about equal to the static fluid pressure of a fluid column in the inner diameter of the casing.
17. ~The method of claim 1 further comprising calculating a desired volume of equilibrium fluid.
18. ~The method of claim 17 wherein calculating a desired volume of equilibrium fluid is performed before flowing an equilibrium fluid into the well bore.
19. ~The method of claim 17 wherein the casing has an interior volume, and wherein calculating a desired volume of equilibrium fluid to be injected comprises equating the desired volume of equilibrium fluid to the interior volume of the casing.
20. ~The method of claim 19 wherein a first fluid is present in the well bore prior to flowing an equilibrium fluid into the well bore, and wherein calculating the desired volume of equilibrium fluid to be injected comprises:
determining the difference in densities of the cement composition and the first fluid by subtracting the density of the first fluid from the density of the cement composition;
determining a product by multiplying the inner volume of the casing by the difference in densities of the cement composition and the first fluid;
determining the difference in densities of the equilibrium fluid and the first fluid by subtracting the density of the first fluid from the density of the equilibrium fluid; and dividing the product by the difference in densities of the equilibrium fluid and the first fluid.
determining the difference in densities of the cement composition and the first fluid by subtracting the density of the first fluid from the density of the cement composition;
determining a product by multiplying the inner volume of the casing by the difference in densities of the cement composition and the first fluid;
determining the difference in densities of the equilibrium fluid and the first fluid by subtracting the density of the first fluid from the density of the equilibrium fluid; and dividing the product by the difference in densities of the equilibrium fluid and the first fluid.
21. ~The method of claim 1 further comprising inserting coiled tubing into the inner diameter of the casing and circulating equilibrium fluid out of the inner diameter to the surface.
22. ~A method of cementing casing in a well bore, comprising:
inserting a casing into the well bore, the casing having an inner diameter and an outer surface, an annulus being defined between the outer surface of the casing and an inner wall of the well bore;
flowing an equilibrium fluid into the well bore;
flowing a cement composition into the well bore after flowing the equilibrium fluid into the well bore;
monitoring the pressure in the inner diameter of the casing;
discontinuing the flow of cement composition into the well bore upon determining that the pressure in the inner diameter of the casing has reached a desired value;
and permitting the cement composition to set in the well bore.
inserting a casing into the well bore, the casing having an inner diameter and an outer surface, an annulus being defined between the outer surface of the casing and an inner wall of the well bore;
flowing an equilibrium fluid into the well bore;
flowing a cement composition into the well bore after flowing the equilibrium fluid into the well bore;
monitoring the pressure in the inner diameter of the casing;
discontinuing the flow of cement composition into the well bore upon determining that the pressure in the inner diameter of the casing has reached a desired value;
and permitting the cement composition to set in the well bore.
23. ~The method of claim 22 wherein the casing comprises a well head, and a casing inner diameter pressure indicator.
24. ~The method of claim 23 further comprising determining from the casing inner diameter pressure indicator when the pressure in the inner diameter of the casing has reached a desired value.
25. ~The method of claim 22 wherein flowing an equilibrium fluid into the well bore comprises flowing the equilibrium fluid into the well bore in a reverse-circulation direction.
26. ~The method of claim 22 wherein flowing a cement composition into the well bore after flowing the equilibrium fluid comprises flowing the cement composition into the well bore in a reverse-circulation direction.
27. ~The method of claim 22 wherein the cement composition has a leading edge, and wherein the leading edge of the cement composition is about adjacent a lowermost end of the casing when the flow of cement composition into the well bore is discontinued.
28. ~The method of claim 27 wherein the leading edge of the cement composition does not penetrate the inner diameter of the casing.
29. ~The method of claim 22 wherein the density of the equilibrium fluid is about equal to the density of the cement composition.
30. ~The method of claim 22 wherein the cement composition has a leading edge, and wherein the equilibrium fluid and the cement composition each have a density such that when the leading edge of the cement composition is about adjacent a lowermost end of the casing, the static fluid pressure of a fluid column in the annulus is about equal to the static fluid pressure of a fluid column in the casing inner diameter.
31. ~The method of claim 22 wherein the equilibrium fluid comprises a drilling fluid.
32. ~The method of claim 22 wherein the equilibrium fluid comprises a spacer fluid.
33. ~The method of claim 24 wherein the desired value of the well bore pressure is about zero.
34. ~The method of claim 22 wherein the density of the equilibrium fluid is greater than the density of the cement composition.
35. ~The method of claim 22 wherein the density of the equilibrium fluid is less than the density of the cement composition.
36. ~The method of claim 34 wherein the well bore comprises a first fluid prior to flowing an equilibrium fluid into the well bore, wherein the cement composition has a leading edge, and wherein when the leading edge of the cement composition is about adjacent to a lowermost end of the casing, the static fluid pressure of a fluid column in the annulus is about equal to the static fluid pressure of a fluid column in the inner diameter of the casing.
37. ~The method of claim 35 wherein the well bore comprises a first fluid prior to flowing an equilibrium fluid into the well bore, wherein the cement composition has a leading edge, and wherein when the leading edge of the cement composition is about adjacent to a lowermost end of the casing, the static fluid pressure of a fluid column in the annulus is about equal to the static fluid pressure of a fluid column in the inner diameter of the casing.
38. ~The method of claim 22 further comprising calculating a desired volume of equilibrium fluid.
39. ~The method of claim 38 wherein calculating a desired volume of equilibrium fluid is performed before flowing an equilibrium fluid into the well bore.
40. ~The method of claim 39 wherein the casing has an interior volume, and wherein calculating a desired volume of equilibrium fluid to be injected comprises equating the desired volume of equilibrium fluid to the interior volume of the casing.
41. ~The method of claim 40 wherein a first fluid is present in the well bore prior to flowing an equilibrium fluid into the well bore, and wherein calculating the desired volume of equilibrium fluid to be injected comprises:
determining the difference in densities of the cement composition and the first fluid by subtracting the density of the first fluid from the density of the cement composition;
determining a product by multiplying the inner volume of the casing by the difference in densities of the cement composition and the first fluid;
determining the difference in densities of the equilibrium fluid and the first fluid by subtracting the density of the first fluid from the density of the equilibrium fluid; and dividing the product by the difference in densities of the equilibrium fluid and the first fluid.
determining the difference in densities of the cement composition and the first fluid by subtracting the density of the first fluid from the density of the cement composition;
determining a product by multiplying the inner volume of the casing by the difference in densities of the cement composition and the first fluid;
determining the difference in densities of the equilibrium fluid and the first fluid by subtracting the density of the first fluid from the density of the equilibrium fluid; and dividing the product by the difference in densities of the equilibrium fluid and the first fluid.
42. ~The method of claim 22 further comprising inserting coiled tubing into the inner diameter of the casing and circulating equilibrium fluid out of the inner diameter to the surface.
43. ~A method of cementing casing in a well bore, comprising:
inserting casing into the well bore;
flowing a circulation fluid into the well bore;
flowing a marker into the well bore at a desired time during the flowing of the circulation fluid into the well bore;
determining when the marker reaches a desired location;
monitoring a volume of circulation fluid after flowing the marker into the well bore, and before determining when the marker reaches a desired location;
determining a volume of cement composition to be flowed into the well bore;
flowing the determined volume of cement composition into the well bore; and permitting the cement composition to set in the well bore.
inserting casing into the well bore;
flowing a circulation fluid into the well bore;
flowing a marker into the well bore at a desired time during the flowing of the circulation fluid into the well bore;
determining when the marker reaches a desired location;
monitoring a volume of circulation fluid after flowing the marker into the well bore, and before determining when the marker reaches a desired location;
determining a volume of cement composition to be flowed into the well bore;
flowing the determined volume of cement composition into the well bore; and permitting the cement composition to set in the well bore.
44. ~The method of claim 43 wherein the well bore has a mouth, and wherein the desired location is a position in the inner diameter of the casing at about the mouth of the well bore.
45. ~The method of claim 43 wherein the well bore has a mouth, wherein a conduit is disposed above the mouth of the well bore in fluid communication with fluid passing through the inner diameter of the casing, and wherein the desired location is a position in the inside.
diameter of the conduit disposed above the mouth of the well bore.
diameter of the conduit disposed above the mouth of the well bore.
46. ~The method of claim 43 wherein flowing a circulation fluid into the well bore comprises flowing the circulation fluid into the well bore in a reverse-circulation direction.
47. ~The method of claim 43 wherein flowing the volume of cement composition into the well bore after the circulation fluid comprises flowing the volume of cement composition into the well bore in a reverse-circulation direction.
48. ~The method of claim 43 wherein the well bore has a mouth, further comprising providing a marker detector at a position above the mouth of the well bore, the marker detector being in fluid communication with fluid passing through the inner diameter of the casing, and wherein determining when the marker reaches a desired location comprises determining from the marker detector when the marker reaches a position above the mouth of the well bore.
49. ~The method of claim 43 wherein the cement composition has a leading edge, wherein the casing has an inner diameter, and wherein the leading edge of the cement composition does not penetrate the inner diameter of the casing.
50. ~The method of claim 43 wherein the cement composition has a leading edge, and wherein the leading edge of the cement composition is about adjacent a lowermost end of the casing when the cement composition is permitted to set in the subterranean formation.
51. ~The method of claim 48 wherein the marker detector comprises a borax detector.
52. ~The method of claim 48 wherein the marker detector comprises a mass flow meter.
53. ~The method of claim 43 wherein the marker comprises at least one of a fiber, a cellophane flake, and a walnut shell.
54. ~The method of claim 43 wherein the casing has an inner diameter; and further comprising monitoring a time interval between flowing a marker into the well bore and the step of determining when the marker reached a desired location; and wherein determining a volume of cement composition to be placed into the well bore comprises determining the volume of circulation fluid that has been flowed into the well bore during the monitored time interval, and subtracting the volume of the inner diameter of the casing from the determined volume of circulation fluid.
55. ~A method of cementing casing in a well bore, comprising:
inserting casing into the well bore;
flowing a volume of circulation fluid, comprising a marker, into the well bore, the volume of circulation fluid being about equal to an inside volume of the casing;
flowing a cement composition into the well bore after flowing the volume of circulation fluid;
determining when the marker reaches a desired location;
discontinuing flowing the cement composition into the well bore; and permitting the cement composition to set in the well bore.
inserting casing into the well bore;
flowing a volume of circulation fluid, comprising a marker, into the well bore, the volume of circulation fluid being about equal to an inside volume of the casing;
flowing a cement composition into the well bore after flowing the volume of circulation fluid;
determining when the marker reaches a desired location;
discontinuing flowing the cement composition into the well bore; and permitting the cement composition to set in the well bore.
56. ~The method of claim 55 wherein the well bore has a mouth, and wherein the desired location is a position in the inner diameter of the casing at about the mouth of the well bore.
57. ~The method of claim 55 wherein the well bore has a mouth, wherein a conduit is disposed above the mouth of the well bore in fluid communication with fluid passing through the inner diameter of the casing, and wherein the desired location is a position in the inside diameter of the conduit disposed above the mouth of the well bore.
58. ~The method of claim 55 wherein flowing a volume of circulation fluid, comprising a marker, into the well bore comprises flowing the volume of circulation fluid, comprising the marker, into the well bore in a reverse-circulation direction.
59. ~The method of claim 55 wherein flowing the cement composition into the well bore after flowing the volume of circulation fluid comprises flowing the cement composition into the well bore in a reverse-circulation direction.
60. ~The method of claim 55 wherein the well bore has a mouth, and further comprising providing a marker detector at a position above the mouth of the well bore, the marker detector being in fluid communication with fluid passing through the inner diameter of the casing, and wherein determining when the marker reaches a desired location comprises determining from the marker detector when the marker reaches a desired location.
61. ~The method of claim 55 wherein the cement composition has a leading edge, wherein the casing has an inner diameter, and wherein the leading edge of the cement composition does not penetrate the inner diameter of the casing.
62. ~The method of claim 55 wherein the cement composition has a leading edge, and wherein the leading edge of the cement composition is about adjacent a lowermost end of the casing when the cement composition is permitted to set in the subterranean formation.
63. ~The method of claim 60 wherein the marker detector comprises a borax detector.
64. ~The method of claim 60 wherein the marker detector comprises a mass flow meter.
65. ~The method of claim 55 wherein the marker comprises at least one of a fiber, a cellophane flake, and a walnut shell.
66. ~A system for cementing casing in a well bore comprising:
a casing inserted into the well bore and defining an annulus therebetween;
a cement composition for flowing into at least a portion of the annulus; and an equilibrium fluid that is positioned within the inner diameter of the casing and balances the static fluid pressures between the inner diameter of the casing and the annulus.
a casing inserted into the well bore and defining an annulus therebetween;
a cement composition for flowing into at least a portion of the annulus; and an equilibrium fluid that is positioned within the inner diameter of the casing and balances the static fluid pressures between the inner diameter of the casing and the annulus.
67. ~The system of claim 66 wherein the equilibrium fluid is a spacer fluid.
68. ~The system of claim 66 wherein the equilibrium fluid is a drilling fluid.
69. ~The system of claim 66 wherein the cement composition is flowed into the at least a portion of the annulus in a reverse circulation direction.
70. ~A system for cementing casing in a well bore comprising:
a casing inserted into the well bore and defining an annulus therebetween, the casing having an inner diameter;
a circulation fluid for flowing into the well bore, the circulation fluid having a leading edge that comprises a marker, and having a trailing edge, wherein the flow of the circulation fluid and marker into the well bore facilitates determination of a volume of cement composition sufficient to fill a desired portion of the annulus;
a cement composition for flowing into at least a portion of the annulus, the cement composition having a leading edge in fluid communication with the trailing edge of the circulation fluid; and a marker detector in fluid communication with fluid passing through the inner diameter of the casing.
a casing inserted into the well bore and defining an annulus therebetween, the casing having an inner diameter;
a circulation fluid for flowing into the well bore, the circulation fluid having a leading edge that comprises a marker, and having a trailing edge, wherein the flow of the circulation fluid and marker into the well bore facilitates determination of a volume of cement composition sufficient to fill a desired portion of the annulus;
a cement composition for flowing into at least a portion of the annulus, the cement composition having a leading edge in fluid communication with the trailing edge of the circulation fluid; and a marker detector in fluid communication with fluid passing through the inner diameter of the casing.
71. The system of claim 70 wherein the marker detector is located at a position above a mouth of the well bore.
72. The system of claim 70 wherein the marker detector is located at a position at about a mouth of the well bore.
73. The system of claim 70 wherein the marker detector is located at a position below a mouth of the well bore.
74. The system of claim 73 wherein the marker detector is connected to a wireline disposed within the inner diameter of the casing.
75. The system of claim 73 wherein the casing has a length, and wherein the marker detector is located at a position within about the upper 25% of the casing length.
76. The system of claim 73 wherein the casing has a length, and wherein the marker detector is located at a position below about the upper 25% of the casing length.
77. The system of claim 70 wherein the cement composition and the circulation fluid are flowed into the well bore in a reverse circulation direction.
78. The system of claim 70 wherein the marker detector is a borax detector.
79. The system of claim 70 wherein the marker detector is a mass flow meter.
80. The system of claim 70 wherein the marker comprises at least one of a fiber, a cellophane flake, and a walnut shell.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/973,322 US7303008B2 (en) | 2004-10-26 | 2004-10-26 | Methods and systems for reverse-circulation cementing in subterranean formations |
| US10/973,322 | 2004-10-26 | ||
| PCT/GB2005/003854 WO2006046000A1 (en) | 2004-10-26 | 2005-10-06 | Methods and systems for reverse-circulation cementing in subterranean formations |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2585080A1 true CA2585080A1 (en) | 2006-05-04 |
| CA2585080C CA2585080C (en) | 2009-12-22 |
Family
ID=35355399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002585080A Expired - Fee Related CA2585080C (en) | 2004-10-26 | 2005-10-06 | Methods and systems for reverse-circulation cementing in subterranean formations |
Country Status (6)
| Country | Link |
|---|---|
| US (4) | US7303008B2 (en) |
| EP (2) | EP1805393A1 (en) |
| CA (1) | CA2585080C (en) |
| MX (1) | MX2007005016A (en) |
| NO (1) | NO20072062L (en) |
| WO (1) | WO2006046000A1 (en) |
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| US20060086499A1 (en) | 2006-04-27 |
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| EP2728109A2 (en) | 2014-05-07 |
| EP1805393A1 (en) | 2007-07-11 |
| US7303008B2 (en) | 2007-12-04 |
| NO20072062L (en) | 2007-07-26 |
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