CN100556842C - A kind of preparation method of cement additire - Google Patents
A kind of preparation method of cement additire Download PDFInfo
- Publication number
- CN100556842C CN100556842C CNB2008101029853A CN200810102985A CN100556842C CN 100556842 C CN100556842 C CN 100556842C CN B2008101029853 A CNB2008101029853 A CN B2008101029853A CN 200810102985 A CN200810102985 A CN 200810102985A CN 100556842 C CN100556842 C CN 100556842C
- Authority
- CN
- China
- Prior art keywords
- weight
- cement
- cement additire
- additire
- preparation
- 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
Abstract
The invention discloses a kind of preparation method of cement additire, it comprises the steps: a) acrylamide of 4～8% weight, the linking agent of 2～4% weight, the initiator of 1～3.5% weight, the toughener of 1～4% weight and the water of surplus to be carried out crosslinking polymerization under condition of normal pressure, forms gel; B) with above-mentioned gel oven dry, pulverizing, make cement additire.The cement additire that method of the present invention makes is applied in the cement system of reinforcing oil well, can prevent has channeling, improves cementing quality, and the cementing quality qualification rate is brought up to more than 94% by original 45%.
Description
Technical field
The present invention relates to a kind of preparation method of cement additire, particularly relate to a kind of preparation method who is used for the cement additire of reinforcing oil well.
Background technology
Shallow at reservoir buried depth, the oil gas ratio height, underground crude oil is dissolved with a large amount of Sweet natural gases, viscosity of crude is low, density is little, after opening oil reservoir, drop to saturation pressure when following with pressure, in-place oil seriously outgases, in conventional well cementing of cement process, the gas of deviating from is scurried into cement stone substrate, or enter in the gap between cement and sleeve pipe or the cement and the borehole wall and cause interlayer to scurry even scurry into well head mutually, finally cause the low or layer cross flow of cement stone consolidation strength, had a strong impact on cementing quality, even remedial measuress such as employing squeeze method also are difficult to prove effective, to oil field subsequent job such as water filling, acid fracturing and layer mining etc. cause disadvantageous effect, even can't carry out.In addition because the oil reservoir interlayer difference is big, high pressure zone and low pressure layer exist simultaneously, if prevent has channeling and strengthen cement slurry density, can cause pollution to the low pressure layer, even press leakage, if cement slurry density is too small, can aggravate the high pressure zone has channeling, influence cementing quality, formation oil, gas, water can be scurried to ground when serious.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of preparation method who is used for the cement additire of reinforcing oil well, and the cement additire that this method makes is used for reinforcing oil well can prevent has channeling, improves cementing quality.
For solving the problems of the technologies described above, the invention provides a kind of preparation method of cement additire, it comprises the steps: that a carries out crosslinking polymerization with the acrylamide of 4～8% weight, the linking agent of 2～4% weight, the initiator of 1～3.5% weight, the toughener of 1～4% weight and the water of surplus under normal pressure, forms gel; B dries above-mentioned gel, pulverize, and makes cement additire.
The preparation method of above-mentioned cement additire, wherein, described polymerization temperature is 75～90 ℃, is preferably 80 ℃.
The preparation method of above-mentioned cement additire, wherein, the content of described acrylamide is preferably 4～5%; The content of described linking agent is preferably 2～3%; The content of described initiator is preferably 1～2%; The content of described toughener is preferably 1～2.5%.
The preparation method of above-mentioned cement additire, wherein, described linking agent is organic boron or borax; Described initiator is a highly basic, is preferably sodium hydroxide or potassium hydroxide; Described toughener is silica flour or flyash.
The preparation method of above-mentioned cement additire, wherein, the granularity of the described cement additire that makes is 0.5～0.9mm.
The cement additire that adopts preparation method of the present invention to make, after joining conventional cement system, because the proportion of this additive is than little many of cement, after adding this additive, under the prerequisite that does not improve cement slurry density, just can reach the purpose of anti-gas channeling, and in the process of theing cement solidifies, additive also expands thereupon, and the volume expansion type additive produces the dynamic inverse reaction to theing cement solidifies, expansion working, thereby prevented annular channeling effectively, also improved the intensity of body of cement greatly, cement and sleeve pipe, the consolidation strength on cement and stratum prevents has channeling, improved cementing quality, the cementing quality qualification rate is brought up to more than 94% by original 45%.
Embodiment
Describe the present invention in detail below in conjunction with embodiment.
Embodiment 1
With the acrylamide of 4% (weight), 3% organic boron, 1% sodium hydroxide, crosslinking polymerization takes place down at 75 ℃ in 2.5% silica flour and water, forms gel, dries afterwards, pulverizes, sieves, and makes the cement additire that granularity is 0.5-0.9mm.
Above-mentioned cement additire is joined in the cementing slurry, add 1.5 parts of cement additires in 100 parts of (weight) grouts, behind the cement additire of employing present embodiment, gas-tight is effective, has guaranteed cementing quality, and the cementing quality qualification rate reaches 94%.
Embodiment 2
With the acrylamide of 5% (weight), 2% borax, 2% sodium hydroxide, crosslinking polymerization takes place down at 80 ℃ in 4% silica flour and water, forms gel, dries afterwards, pulverizes, sieves, and makes the cement additire that granularity is 0.5-0.9mm.
Above-mentioned cement additire is joined in the cementing slurry, add 2 parts of cement additires in 100 parts of (weight) grouts, behind the cement additire of employing present embodiment, gas-tight is effective, has guaranteed cementing quality, and the cementing quality qualification rate reaches 97%.
Embodiment 3
With the acrylamide of 8% (weight), 4% organic boron, 3.5% potassium hydroxide, crosslinking polymerization takes place down at 90 ℃ in 1% flyash and water, forms gel, dries afterwards, pulverizes, sieves, and makes the cement additire that granularity is 0.5-0.9mm.
Above-mentioned cement additire is joined in the cementing slurry, add 3 parts of cement additires in 100 parts of (weight) grouts, behind the cement additire of employing present embodiment, gas-tight is effective, has guaranteed cementing quality, and the cementing quality qualification rate reaches 95%.
Claims (5)
1, a kind of preparation method of cement additire, it comprises the steps:
A carries out crosslinking polymerization with the acrylamide of 4～8% weight, the linking agent of 2～4% weight, the initiator of 1～3.5% weight, the toughener of 1～4% weight and the water of surplus under normal pressure, form gel;
B dries above-mentioned gel, pulverize, and makes cement additire;
Wherein, described linking agent is organic boron or borax, and described initiator is sodium hydroxide or potassium hydroxide, and described toughener is silica flour or flyash.
2, the method for claim 1, wherein described polymerization temperature is 75～90 ℃.
3, method as claimed in claim 2, wherein, described polymerization temperature is 80 ℃.
4, the method for claim 1, wherein the content of described acrylamide is 4～5%; The content of described linking agent is 2～3%; The content of described initiator is 1～2%; The content of described toughener is 1～2.5%.
5, the granularity of the method for claim 1, wherein described cement additire that makes is 0.5～0.9mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008101029853A CN100556842C (en) | 2008-03-28 | 2008-03-28 | A kind of preparation method of cement additire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008101029853A CN100556842C (en) | 2008-03-28 | 2008-03-28 | A kind of preparation method of cement additire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101255021A CN101255021A (en) | 2008-09-03 |
| CN100556842C true CN100556842C (en) | 2009-11-04 |
Family
ID=39890185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2008101029853A Active CN100556842C (en) | 2008-03-28 | 2008-03-28 | A kind of preparation method of cement additire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100556842C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102247685B (en) * | 2010-05-18 | 2015-02-25 | 上海复拓环境技术有限公司 | Harmless treatment process for mercury-containing waste dangerous chemicals |
| CN103484086B (en) * | 2012-06-13 | 2016-04-13 | 中国石油化工股份有限公司 | Gel particle type plugging agent and preparation method |
| CN103466989B (en) * | 2013-09-25 | 2015-05-13 | 周建平 | Cement reinforcer and preparation method thereof |
| CN110194607A (en) * | 2019-06-05 | 2019-09-03 | 江苏昕宇药业有限公司 | A kind of novel concrete additive |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1016162B (en) * | 1987-03-23 | 1992-04-08 | 菲利普石油公司 | Fluid loss additives for well cementing compositions |
| CN1834195A (en) * | 2006-04-24 | 2006-09-20 | 淄博永麒化工技术开发有限公司 | Gas-check cement slurry for cementing of oil field |
-
2008
- 2008-03-28 CN CNB2008101029853A patent/CN100556842C/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1016162B (en) * | 1987-03-23 | 1992-04-08 | 菲利普石油公司 | Fluid loss additives for well cementing compositions |
| CN1834195A (en) * | 2006-04-24 | 2006-09-20 | 淄博永麒化工技术开发有限公司 | Gas-check cement slurry for cementing of oil field |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101255021A (en) | 2008-09-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102443383B (en) | High-dehydration hardenable plugging sealing agent | |
| CN100571855C (en) | Blowing agent and microvesicle drilling fluid capable of circulation and well-drilling technology | |
| CN101353571B (en) | Oil and water well slag plugging agent | |
| CN101353570B (en) | Heavy crude thermal recovery steamed well slag plugging agent | |
| CN102134480B (en) | Water plugging agent and preparation method thereof | |
| CN105156066B (en) | A kind of white lime method for blocking in combustion in situ recovery process | |
| US9366125B2 (en) | Carbonate based slurry fracturing using solid acid for unconventional reservoirs | |
| CN107698226A (en) | A kind of cement-silicate injecting paste material | |
| CN104099074B (en) | Volume fracturing reconstruction crack plugging agent and water plugging construction method | |
| CN100556842C (en) | A kind of preparation method of cement additire | |
| CN106050185B (en) | A kind of coal mining bottom plate meets the control method that tomography produces water inrush channel | |
| CN103849362B (en) | The formula of a kind of coal bed gas extraction discharge drilling sealing material and preparation method | |
| CN106433587A (en) | Combined plugging agent | |
| CN107216070B (en) | Efficient anti-erosion channeling control cement slurry system | |
| CN104726078A (en) | Gel plugging agent and preparation method thereof | |
| CN102191025A (en) | Broad-spectrum deformable while-drilling leak-proof sealing agent | |
| CN103773340B (en) | High strength consolidation type plugging agent | |
| CN101016451A (en) | Compositions and preparation and use thereof | |
| CN102504781B (en) | Oil and water well sealing and plugging agent and preparation method thereof | |
| CN101967964B (en) | Method for prewashing multi-density double-setting long-sealing gas channeling prevention well cementing | |
| CN104045271A (en) | Plugging agent for oil field or natural gas extraction and preparation method thereof | |
| CN102911650A (en) | High-strength composite plugging system for plugging pipe flow channel and preparation method thereof | |
| CN107892543A (en) | A kind of sealing material for Karst water bursting and preparation method thereof and method for sealing | |
| CN100590091C (en) | Application method of cement additive | |
| CN100556843C (en) | A kind of cement additire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shandong Puruiside Petroleum Technology Co., Ltd. Assignor: Anton Oilfield Services (Group) Ltd. Contract record no.: 2011990001060 Denomination of invention: Method for preparing cement additive Granted publication date: 20091104 License type: Exclusive License Open date: 20080903 Record date: 20111125 |