CA2490928A1 - Fluid loss additives and methods - Google Patents
Fluid loss additives and methods Download PDFInfo
- Publication number
- CA2490928A1 CA2490928A1 CA 2490928 CA2490928A CA2490928A1 CA 2490928 A1 CA2490928 A1 CA 2490928A1 CA 2490928 CA2490928 CA 2490928 CA 2490928 A CA2490928 A CA 2490928A CA 2490928 A1 CA2490928 A1 CA 2490928A1
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- CA
- Canada
- Prior art keywords
- cementing
- composition
- cement
- fluid loss
- cementing composition
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- 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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- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
Nonionic derivatized starch of varying degrees of substitution may be used as a fluid loss additive for well bore cementing operations. A well bore cementing composition may include a cement and a nonionic derivatized starch, the nonionic derivatized starch in a concentration in the cement to provide a fluid loss of less than 200cc/30min. A method for cementing subterranean zones penetrated by a well bore may include: providing a cement slurry including mix water, hydraulic cement and a nonionic derivatized starch as an additive for fluid loss control in well cementing applications; pumping the cement slurry into a well; and holding the cement slurry in place until it sets.
Claims (23)
1. A method of using derivatized hydroxypropyl starch as an additive for fluid loss control in well cementing applications wherein said starch is a part of cement slurry composition comprised of mix water and hydraulic cement useful in cementing oil, gas, and water wells.
2. The method of claim 1 wherein the derivatized hydroxypropyl starch includes a degree of substitution of between 0.2 and 1.6.
3. The method of claim 1 wherein the cement slurry composition includes a dispersant to facilitate mixing of the starch into the slurry.
4. The method of claim 1 wherein the concentration of the derivatized hydroxypropyl starch in the cement slurry composition is sufficient to reduce fluid loss, to below 200 cc/30 minutes.
5. The method of claim 1 wherein the derivatized hydroxypropyl starch is selected from cornstarch or potato starch.
6. A cementing composition useful in cementing oil, gas and/or water wells comprising: mix water, hydraulic cement and a derivatized hydroxypropyl starch fluid loss additive in an amount effective to reduce fluid loss, to below 200 cc/30 minutes.
7. The cementing composition of claim 6 wherein the derivatized hydroxypropyl starch is selected from cornstarch or potato starch.
8. The cementing composition of claim 6, wherein said fluid loss additive includes a dispersant.
9. The cementing composition of claim 6 selected from the group including, but not limited to, lignosulfonates, sodium or potassium salts of a sulfonated naphthalene formaldehyde condensate, polynaphthalene sulfonates, sulfonated polyacrylamide, a branched or non-branched polycarboxylate and mixtures thereof.
10. The cementing composition of claims 6, 7, 8 or 9 including a salt selected from the group consisting of sodium, potassium, or calcium chloride and wherein the starch includes a degree of substitution of greater than 0.5.
11. The cementing composition of claim 10 wherein the salt is present in a sufficient concentration to effect an accelerated set time of the slurry.
12. The cementing composition of claims 6, 7, 8 or 9 including an alkali earth metal.
13. The cementing composition of claim 12 wherein the alkali earth metal is selected from the group consisting of CaO, MgO, Na2CO3, Na2SO4, K2SO4, and CaSO4.
14. The cementing composition of claim 12 wherein the alkali earth metal is present in a sufficient concentration to effect an accelerated set time of the slurry.
15. The cement composition of claims 6 or 9 including a set retarder.
16. The cementing composition of claim 12 wherein the set retarder is selected from the group consisting of sodium or calcium lignosulfonate, adipic acid, citric acid, gluconic acid, and tartaric acid.
17. The cementing composition of claims 6 or 10 to 16 including a sulfonated styrene/maleic anhydride copolymer.
18. The cementing composition of claim 6 wherein said mix water is selected from the group consisting of freshwater, unsaturated and saturated salt solutions.
19. The cementing composition of claim 6 wherein said hydraulic cement composition is selected from class G cement, Portland, slag, pozzolan, gypsum, aluminous and silica cements.
20. The cementing composition of claim 6 wherein said mix water is present from 35 to 250 cubic meters per tonne of cement.
21. A method for cementing subterranean zones penetrated by a well bore, the method comprising: providing a cement slurry including a derivatized hydroxypropyl starch as an additive for fluid loss control, pumping that cement slurry into the well bore and maintaining the cement slurry in place until the cement sets.
22. The method of claim 21 wherein the subterranean zones include at least some permeable zones.
23. The method of claim 21 wherein the derivatized hydroxypropyl starch is present in an amount effective to reduce fluid loss, to below 200 cc/30 minutes.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US48178403P | 2003-12-12 | 2003-12-12 | |
| US60/481,784 | 2003-12-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2490928A1 true CA2490928A1 (en) | 2005-06-12 |
| CA2490928C CA2490928C (en) | 2012-06-12 |
Family
ID=34676554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2490928 Expired - Fee Related CA2490928C (en) | 2003-12-12 | 2004-12-13 | Fluid loss additives and methods |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2490928C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102746836A (en) * | 2012-07-30 | 2012-10-24 | 廊坊古莱特石油技术有限公司 | Well-cementing and self-healing cement slurry for oil-gas field |
| CN102782080A (en) * | 2010-04-21 | 2012-11-14 | 巴斯夫欧洲公司 | Use of CSH suspensions in cementing wells |
| CN111072328A (en) * | 2019-12-30 | 2020-04-28 | 中国海洋石油集团有限公司 | Oil well micro-crack self-healing material and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10589238B2 (en) | 2016-03-14 | 2020-03-17 | Schlumberger Technology Corporation | Mixing system for cement and fluids |
-
2004
- 2004-12-13 CA CA 2490928 patent/CA2490928C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102782080A (en) * | 2010-04-21 | 2012-11-14 | 巴斯夫欧洲公司 | Use of CSH suspensions in cementing wells |
| CN102782080B (en) * | 2010-04-21 | 2015-07-29 | 巴斯夫欧洲公司 | The application of CSH suspension in well cementation |
| CN102746836A (en) * | 2012-07-30 | 2012-10-24 | 廊坊古莱特石油技术有限公司 | Well-cementing and self-healing cement slurry for oil-gas field |
| CN102746836B (en) * | 2012-07-30 | 2013-12-18 | 廊坊古莱特石油技术有限公司 | Well-cementing and self-healing cement slurry for oil-gas field |
| CN111072328A (en) * | 2019-12-30 | 2020-04-28 | 中国海洋石油集团有限公司 | Oil well micro-crack self-healing material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2490928C (en) | 2012-06-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20171213 |