CN117945689B - A high stability retarder for oil well cement - Google Patents
A high stability retarder for oil well cement Download PDFInfo
- Publication number
- CN117945689B CN117945689B CN202410165245.3A CN202410165245A CN117945689B CN 117945689 B CN117945689 B CN 117945689B CN 202410165245 A CN202410165245 A CN 202410165245A CN 117945689 B CN117945689 B CN 117945689B
- Authority
- CN
- China
- Prior art keywords
- retarder
- parts
- oil well
- well cement
- polysaccharide
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/20—Retarders
- C04B2103/22—Set retarders
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
本发明涉及水泥添加剂技术领域，提出了一种油井水泥用高稳定性缓凝剂，包括以下重量份组分的原料：3~5份羟基羧酸盐、12~15份多聚糖、0.05~0.8份4‑咪唑丙烯酸、2~3份盐酸、0.1~0.8份丁二醛、70~80份去离子水。通过上述技术方案，解决了现有技术中水泥缓凝剂在高温下出现“包心”现象，从而导致缓凝性低的问题。The invention relates to the technical field of cement additives, and proposes a high-stability retarder for oil well cement, comprising the following raw materials in parts by weight: 3-5 parts of hydroxycarboxylate, 12-15 parts of polysaccharide, 0.05-0.8 parts of 4-imidazole acrylic acid, 2-3 parts of hydrochloric acid, 0.1-0.8 parts of succinaldehyde, and 70-80 parts of deionized water. Through the above technical scheme, the problem of "core encapsulation" of cement retarders at high temperatures in the prior art is solved, thereby causing low retarding property.
Description
Technical Field
The invention relates to the technical field of cement additives, in particular to a high-stability retarder for oil well cement.
Background
The cement retarder is an additive of cement and is commonly used in cement paste used in oil well cementing operation. In the cementing operation of oil well, the cement slurry needs to be pumped to the action position by a pump, so as to achieve the purposes of isolating oil, gas and water, protecting the formation and supporting the protection sleeve. The cement slurry needs to maintain fluidity before being sent to a required position, but after the cement hydration reaction is carried out to a certain degree, the cement loses fluidity and cannot be subjected to construction operation. Therefore, retarder is added into the cement slurry to ensure that the cement slurry can normally operate.
In the exploitation process of oil and gas fields, as the well depth is increased, the bottom hole temperature is increased continuously, and the hydration speed of cement is also increased, so that the retarder is required to slow down the hydration speed of cement paste at high temperature, and the thickening time is prolonged. The high-temperature retarder commonly used at present can have a core-wrapping phenomenon at the temperature of more than 120 ℃ so as to limit the application of the retarder. Patent CN111662409B discloses a high-temperature oil well cement retarder capable of inhibiting abnormal gelation and a preparation method thereof, and discloses the high-temperature oil well cement retarder capable of inhibiting abnormal gelation, wherein the normal working temperature is only 150 ℃, and the phenomena of 'packing' and 'bulging' still occur once the temperature is increased, thereby affecting the comprehensive performance of cement paste.
Disclosure of Invention
The invention provides a high-stability retarder for oil well cement, which solves the problem of low retarder caused by the phenomenon of 'core inclusion' of the cement retarder at high temperature in the related technology.
The technical scheme of the invention is as follows:
The invention provides a high-stability retarder for oil well cement, which comprises the following raw materials, by weight, 3-5 parts of hydroxycarboxylic acid salt, 12-15 parts of polysaccharide, 0.05-0.8 part of 4-imidazole acrylic acid, 2-3 parts of hydrochloric acid, 0.1-0.8 part of succinaldehyde and 70-80 parts of deionized water.
As a further technical scheme, the mass of the butanedial is 2% -3% of the mass of the hydroxycarboxylic acid salt and the mass of the polysaccharide.
As a further technical scheme, the mass of the succinaldehyde is 2.6% of the mass of the hydroxycarboxylic acid salt and the polysaccharide.
As a further technical scheme, the mass of the 4-imidazole acrylic acid is 1% -3% of the mass of the hydroxycarboxylic acid salt and the polysaccharide.
As a further technical scheme, the mass of the 4-imidazole acrylic acid is 2.1% of the mass of the hydroxycarboxylic acid salt and the polysaccharide.
As a further technical scheme, the mass concentration of the hydrochloric acid is 30% -35%.
As a further technical scheme, the hydroxycarboxylic acid salt is one or two of sodium gluconate and sodium glucoheptonate dihydrate.
As a further technical scheme, the polysaccharide is one or more of platycodon root polysaccharide, white dextrin and inulin.
The invention also discloses a preparation method of the high-stability retarder for the oil well cement, which comprises the following steps of uniformly mixing raw material components, and reacting to obtain the retarder.
As a further technical scheme, the reaction temperature is 85-95 ℃ and the reaction time is 2-3 h.
The invention also comprises application of the high-stability retarder for the oil well cement in high-temperature oil well cement.
The working principle and the beneficial effects of the invention are as follows:
1. According to the invention, the hydroxycarboxylic acid salt and the polysaccharide are used as the base materials of the retarder, cations in cement can be chelated to generate a stable chelate, the chelate is adsorbed on the surface of cement particles to prevent the cement particles from forming more stable crystals, the effects of inhibiting hydration and prolonging thickening time are achieved, and succinaldehyde can be subjected to cross-linking reaction with the hydroxycarboxylic acid salt and the polysaccharide under the catalysis of hydrochloric acid to form a cross-linked network structure, so that the compressive strength of the retarder at high temperature is improved, the retarder is further enhanced, 4-imidazole acrylic acid is added into the retarder, the cations in cement can be chelated, the further enhanced retarder is further subjected to condensation reaction with the hydroxycarboxylic acid salt and the polysaccharide to form a hydrogen bond, the compressive strength of the retarder at high temperature is further enhanced, the retarder is further enhanced, and the problem of 'core-wrapping' phenomenon occurring at high temperature is solved.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the following examples and comparative examples,
Sodium glucoheptanoate dihydrate model 20230316;
the product number of the platycodon grandiflorum polysaccharide is 034, and the manufacturer is Fu Er bang biotechnology Co., ltd. In Shanxi province;
The model of the white dextrin is LA-7Q, and the manufacturer is Shandong Liang New Material science and technology Co., ltd;
The product number of the inulin is 12536, and the manufacturer is Shanxi Lulai biotechnology Co., ltd;
Example 1
The preparation method of the high-stability retarder for the oil well cement comprises the following steps:
3 parts of sodium gluconate, 12 parts of platycodon root polysaccharide, 0.1 part of 4-imidazole acrylic acid, 2 parts of hydrochloric acid, 0.2 part of glyoxal and 70 parts of deionized water are uniformly mixed, and then heated to 85 ℃ under a stirring state for 3 hours to obtain the retarder, wherein the mass concentration of the hydrochloric acid is 30%.
Example 2
The preparation method of the high-stability retarder for the oil well cement comprises the following steps:
Uniformly mixing 4 parts of sodium glucoheptonate dihydrate, 13 parts of white dextrin, 0.36 part of 4-imidazole acrylic acid, 2.5 parts of hydrochloric acid, 0.45 part of succinaldehyde and 75 parts of deionized water, and heating to 90 ℃ under stirring to react for 2.5 hours to obtain the retarder, wherein the mass concentration of the hydrochloric acid is 33%.
Example 3
The preparation method of the high-stability retarder for the oil well cement comprises the following steps:
uniformly mixing 5 parts of sodium gluconate, 15 parts of inulin, 0.5 part of 4-imidazole acrylic acid, 3 parts of hydrochloric acid, 0.5 part of succinyl aldehyde and 80 parts of deionized water, and heating to 95 ℃ under stirring to react for 2 hours to obtain the retarder, wherein the mass concentration of the hydrochloric acid is 35%.
Example 4
This example differs from example 2 only in that 0.36 parts of succinaldehyde are added.
Example 5
This example differs from example 2 only in that 0.54 parts of succinaldehyde are added.
Example 6
This example differs from example 2 only in that 0.18 parts of succinaldehyde are added.
Example 7
This example differs from example 2 only in that 0.72 parts of succinaldehyde are added.
Example 8
This example differs from example 2 only in that 0.18 parts of 4-imidazole acrylic acid was added.
Example 9
This example differs from example 2 only in that 0.54 parts of 4-imidazole acrylic acid was added.
Example 10
This example differs from example 2 only in that 0.09 parts of 4-imidazole acrylic acid was added.
Example 11
This example differs from example 2 only in that 0.72 parts of 4-imidazole acrylic acid was added.
Comparative example 1
This comparative example differs from example 2 only in that 4-imidazole acrylic acid was not added.
Comparative example 2
This comparative example differs from example 2 only in that 4-imidazole acrylic acid was replaced with an equivalent amount of polyethylene glycol.
Performance test:
The retarders obtained in examples 1-11 and comparative examples 1-2 were measured for thickening time and compressive strength at 150 ℃ according to the method in SY/T5504.1-2013, evaluation method for oil well Cement Admixture part 1 retarder, and the test results are shown in Table 1;
table 1 test results of retarder Performance test obtained in examples 1 to 11 and comparative examples 1 to 2
In the invention, compared with the example 2, the comparative example 1 is not added with 4-imidazole acrylic acid, the comparative example 2 is replaced by polyethylene glycol with the same amount, and as a result, the thickening time and the compressive strength in the comparative examples 1-2 are smaller than those in the example 2, which shows that the retarder can be improved in retarder retarding property and compressive strength at high temperature by adding 4-imidazole acrylic acid.
Compared with the example 2, the addition amount of the 4-imidazole acrylic acid is changed in the examples 8-11, and as a result, the thickening time and the compressive strength in the examples 2 and the examples 8-9 are both larger than those in the examples 10-11, which means that when the mass of the 4-imidazole acrylic acid is 1% -3% of the sum of the mass of the hydroxycarboxylic acid salt and the mass of the polysaccharide, the retarder can be further improved in retarder and compressive strength at high temperature, and the thickening time and the compressive strength in the examples 2 are both larger than those in the examples 8-9, which means that when the mass of the 4-imidazole acrylic acid is 2.1% of the sum of the mass of the hydroxycarboxylic acid salt and the polysaccharide, the retarder can be further improved in retarder and compressive strength at high temperature.
Compared with the embodiment 2, the embodiment 4-7 changes the addition amount of the butanedial, and as a result, the thickening time and the compressive strength in the embodiment 2 and the embodiment 4-5 are both longer than those in the embodiment 6-7, which means that when the mass of the butanedial is 2% -3% of the sum of the mass of the hydroxycarboxylic acid salt and the polysaccharide, the retarder can be further improved in retarder retarding property and compressive strength at high temperature, and the thickening time and the compressive strength in the embodiment 2 are both longer than those in the embodiment 4-5, which means that when the mass of the butanedial is 2.6% of the sum of the mass of the hydroxycarboxylic acid salt and the polysaccharide, the retarder can be further improved in retarder retarding property and compressive strength at high temperature.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410165245.3A CN117945689B (en) | 2024-02-05 | 2024-02-05 | A high stability retarder for oil well cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410165245.3A CN117945689B (en) | 2024-02-05 | 2024-02-05 | A high stability retarder for oil well cement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117945689A CN117945689A (en) | 2024-04-30 |
| CN117945689B true CN117945689B (en) | 2025-01-28 |
Family
ID=90796044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410165245.3A Active CN117945689B (en) | 2024-02-05 | 2024-02-05 | A high stability retarder for oil well cement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117945689B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105315977A (en) * | 2014-07-28 | 2016-02-10 | 中国石油化工股份有限公司 | Oil well cement retarder and preparation method therefor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597487B (en) * | 2009-06-26 | 2012-02-29 | 天津中油渤星工程科技有限公司 | Oil well cement high temperature retarder |
| CN104327813B (en) * | 2014-11-19 | 2017-07-25 | 中国石油天然气股份有限公司冀东油田分公司钻采工艺研究院 | High temperature resistant oil well cement dispersion retarder and preparation method thereof |
| CN111662409B (en) * | 2020-06-30 | 2022-03-04 | 天津大学 | High-temperature oil well cement retarder capable of inhibiting abnormal gelation and preparation method thereof |
-
2024
- 2024-02-05 CN CN202410165245.3A patent/CN117945689B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105315977A (en) * | 2014-07-28 | 2016-02-10 | 中国石油化工股份有限公司 | Oil well cement retarder and preparation method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117945689A (en) | 2024-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8720562B2 (en) | Wellbore cementing compositions and methods of making and using same | |
| EP3816193A1 (en) | Preparation method of modified starch ether for improving open time of ceramic tile adhesive | |
| US9410072B2 (en) | Cement retarder and method of using the same | |
| CN103819114A (en) | Preparation method of low-alkali polymer high-efficient liquid setting-accelerator for sprayed concrete | |
| CN117945689B (en) | A high stability retarder for oil well cement | |
| CN110451852B (en) | Self-degradable low-density temporary plugging cement suitable for high-temperature geothermal wells and preparation method | |
| CN103571444A (en) | High temperature-resistant oil well cement additive, and preparation and applications thereof | |
| CN107963842A (en) | A kind of geothermal well well cementing mortar architecture and preparation method thereof | |
| CN113233850B (en) | Modified concrete and preparation method thereof | |
| CN116947398B (en) | Resin cement paste and preparation method thereof | |
| CN109867486B (en) | Special water-retaining additive for high-temperature-resistant concrete and preparation process and application thereof | |
| CN112979210B (en) | Anti-adsorption concrete glue reducing agent and application thereof | |
| CN112341059B (en) | Anti-cracking concrete and preparation method thereof | |
| CN116891368A (en) | Hydraulic composition | |
| CN113683341A (en) | Concrete viscosity modifier and preparation method thereof | |
| CN118620590B (en) | Preparation method and application of multifunctional additive for acidification | |
| CN106242342B (en) | A kind of oil-well cement fluid retarder and preparation method thereof | |
| CN112250411A (en) | Self-degradable temporary plugging cement and preparation method thereof | |
| CN118791244A (en) | A high temperature resistant broad spectrum environmentally friendly retarder for cementing and its preparation method and application | |
| CN117985961A (en) | An early-strength alkali-free liquid accelerating agent and its preparation and application | |
| CN115432958B (en) | Is suitable for CO 2 Well cementation cement slurry system of enhanced geothermal system | |
| JPH0541583B2 (en) | ||
| CN110372253B (en) | Inulin-containing wet-mixed mortar additive and application thereof | |
| CN118909205A (en) | Retarder for oil well cement paste, and preparation method and application thereof | |
| CN107512864B (en) | Low-sensitivity foam concrete foaming agent and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |