BRPI0502652A - processo de obtenção de hidroxipropilamido (hpa) para utilização em tratamento de poços de perfuração - Google Patents
processo de obtenção de hidroxipropilamido (hpa) para utilização em tratamento de poços de perfuraçãoInfo
- Publication number
- BRPI0502652A BRPI0502652A BRPI0502652-0A BRPI0502652A BRPI0502652A BR PI0502652 A BRPI0502652 A BR PI0502652A BR PI0502652 A BRPI0502652 A BR PI0502652A BR PI0502652 A BRPI0502652 A BR PI0502652A
- Authority
- BR
- Brazil
- Prior art keywords
- hpa
- hydroxypropyl starch
- drilling
- drilling well
- well treatment
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B11/00—Preparation of cellulose ethers
- C08B11/02—Alkyl or cycloalkyl ethers
- C08B11/04—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals
- C08B11/08—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals with hydroxylated hydrocarbon radicals; Esters, ethers, or acetals thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
- C08B31/08—Ethers
- C08B31/12—Ethers having alkyl or cycloalkyl radicals substituted by heteroatoms, e.g. hydroxyalkyl or carboxyalkyl starch
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Biochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Epoxy Compounds (AREA)
- Treatment Of Sludge (AREA)
Abstract
"PROCESSO DE OBTENçãO DE HIDROXIPROPILAMIDO (HPA) PARA UTILIZAçãO EM TRATAMENTO DE POçOS DE PERFURAçãO". Tratando-se da produção de um produto químico para ser utilizado na perfuração e manutenção de poços em formações subterrâneas. Trata-se de um amido modificado, o hidroxipropilamido ou HPA, para ser usado em salmoura de fluidos de perfuração, manutenção e operações de conclusão de camadas profundas do solo. Com a utilização do HPA o objetivo principal é a redução da perda de filtrado em lamas de fluídos de perfuração de petróleo, adequado a altas temperaturas e pressão.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0502652-0A BRPI0502652A (pt) | 2005-06-30 | 2005-06-30 | processo de obtenção de hidroxipropilamido (hpa) para utilização em tratamento de poços de perfuração |
US11/261,926 US20070004915A1 (en) | 2005-06-30 | 2005-10-31 | Process for obtaining hydroxypropylstarch (HPS) for use in the treatment of drilling wells |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0502652-0A BRPI0502652A (pt) | 2005-06-30 | 2005-06-30 | processo de obtenção de hidroxipropilamido (hpa) para utilização em tratamento de poços de perfuração |
Publications (1)
Publication Number | Publication Date |
---|---|
BRPI0502652A true BRPI0502652A (pt) | 2007-02-21 |
Family
ID=37590543
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0502652-0A BRPI0502652A (pt) | 2005-06-30 | 2005-06-30 | processo de obtenção de hidroxipropilamido (hpa) para utilização em tratamento de poços de perfuração |
Country Status (2)
Country | Link |
---|---|
US (1) | US20070004915A1 (pt) |
BR (1) | BRPI0502652A (pt) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108203470A (zh) * | 2016-12-19 | 2018-06-26 | 湖南尔康制药股份有限公司 | 一种预胶化羟丙基淀粉及其制备方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2438855A (en) * | 1942-02-25 | 1948-03-30 | Corn Prod Refining Co | Process of modifying starch |
US3804828A (en) * | 1972-05-08 | 1974-04-16 | Nat Starch Chem Corp | Epichlorohydrin-inhibited,stabilized retort starches |
EP1176254A1 (en) * | 2000-07-24 | 2002-01-30 | The Dow Chemical Company | Use of dispersions of crosslinked cationic starch in papermaking |
US7387985B2 (en) * | 2003-03-31 | 2008-06-17 | M-I L.L.C. | Monovalent cation-containing well fluids |
-
2005
- 2005-06-30 BR BRPI0502652-0A patent/BRPI0502652A/pt not_active Application Discontinuation
- 2005-10-31 US US11/261,926 patent/US20070004915A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US20070004915A1 (en) | 2007-01-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B06F | Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette] | ||
B07A | Application suspended after technical examination (opinion) [chapter 7.1 patent gazette] | ||
B09B | Patent application refused [chapter 9.2 patent gazette] |
Free format text: INDEFIRO O PEDIDO DE ACORDO COM OS ARTIGOS 8O COMBINADO COM ART. 13 E ART. 25 DA LPI. |
|
B09B | Patent application refused [chapter 9.2 patent gazette] |
Free format text: MANTIDO O INDEFERIMENTO UMA VEZ QUE NAO FOI APRESENTADO RECURSO DENTRO DO PRAZO LEGAL. |
|
B15K | Others concerning applications: alteration of classification |
Ipc: C08B 11/08 (2006.01), C08B 31/12 (2006.01), C09K 8 |