CN104568640A - Cement paste stability evaluation method - Google Patents
Cement paste stability evaluation method Download PDFInfo
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- CN104568640A CN104568640A CN201310520531.9A CN201310520531A CN104568640A CN 104568640 A CN104568640 A CN 104568640A CN 201310520531 A CN201310520531 A CN 201310520531A CN 104568640 A CN104568640 A CN 104568640A
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- cement paste
- grout
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Abstract
The invention discloses a cement paste stability evaluation method which is characterized by comprising the following steps: pouring the prepared cement paste into a measuring cylinder and sealing with a rubber plug, horizontally arranging the measuring cylinder, arranging the rubber plug end on a fixed support, and arranging the other end on an electronic scale and weighing to obtain a result M1; then taking down the measuring cylinder and erecting and standing for 24 hours, measuring by using the same method to obtain a result M2, and making a difference from M2 and M1 to obtain an evaluation index of the cement paste settling stability. The cement paste stability evaluation method is simple and convenient to operate, the results are reliable, and the cement paste stability evaluation method is slightly influenced by human factors when being used for stability evaluation of oilfield well cementing operation cement paste, and the evaluation index is true and accurate.
Description
Technical field: the present invention relates to a kind of cement slurry property analytical approach, especially for a kind of grout method for estimating stability of reinforcing oil well operation.
Background technology: before the present invention, the many employings of each engineering unit artificial ground in high temperature and pressure protective cauldron, by evaluating its sedimentation stability to the cement stone column difference of densities measurement formed, or judged the sedimentation stability of grout by the change of measuring grout denseness before and after multiviscosity meter stirs; Due to the method complicated operation of simulating in high temperature and pressure protective cauldron, evaluation result is comparatively large by interference from human factor, and the comprehensive characterization of the result using multiviscosity meter to carry out evaluating just to cement paste rheological, and error is larger, different experiments comparability is poor, truly can not reflect sedimentation stability.
Summary of the invention: the object of the invention is: for reinforcing oil well operation provides a kind of grout method for estimating stability, due to the method be stir through multiviscosity meter by directly measuring grout, the centre-of gravity shift degree of cement stone column evaluates its sedimentation stability before and after sedimentation, thus easy and simple to handle, little by interference from human factor, evaluation result is true, accurate.
The object of the invention is to be realized by following measures: a kind of grout method for estimating stability, it is characterized in that the grout prepared to pour in graduated cylinder to seal with plug, and by graduated cylinder horizontal positioned, its plug end is placed on fixed support, the other end is placed on electronic scales and claims its weight to obtain result M1; Then take off the upright static placement of graduated cylinder 24 hours, then the measurement that uses the same method obtains result M2, last M2 and M1 is poor, draws the evaluation index of this grout sedimentation stability.
The present invention is easy and simple to handle, reliable results, in reinforcing oil well operation grout estimation of stability, little by interference from human factor, and evaluation index is true, accurate.
Accompanying drawing illustrates: Fig. 1 is grout sedimentation stability instrumentation plan.
Embodiment: the grout prepared is poured in 250ml graduated cylinder, addition is 250ml, then plug (plug covers tightly rear length and just arrives graduated cylinder 250ml scale place) is used to seal opening, by graduated cylinder horizontal positioned, plug one end is placed on the fixed support of band crossbeam, the other end is placed in (see figure 1) on electronic scales, its weight is claimed to obtain result M1, then the upright static placement of graduated cylinder 24 hours is taken off, the measurement that uses the same method again obtains result M2, by poor for result M2 and M1, result is the evaluation index of this grout sedimentation stability.
Embodiment:
1, according to API metric system for grout;
2, grout is poured in multiviscosity meter slurry cup, put into normal pressure multiviscosity meter, then hotwire, stir 20 minutes at the temperature of 27 ± 1.7 DEG C;
3, grout is poured in graduated cylinder, build with plug;
4, by graduated cylinder horizontal positioned, plug one end is placed on support, and the other end is placed in (see figure 1) on electronic scales, claims its weight to obtain result M1;
5, graduated cylinder is taken off, by its upright static placement 24 hours at environment temperature is 22.8 ± 2.8 DEG C;
6, repeat step 4 and obtain measurement result M2, by poor for result M2 and M1, obtain a result and be the evaluation index of this grout sedimentation stability.
Claims (1)
1. a grout method for estimating stability, is characterized in that: poured into by the grout prepared with plug sealing in graduated cylinder, and by graduated cylinder horizontal positioned, its plug end is placed on fixed support, the other end is placed on electronic scales and claims its weight to obtain result M
1; Then take off the upright static placement of graduated cylinder 24 hours, then the measurement that uses the same method obtains result M
2, last M
2with M
1differ from, draw the evaluation index of this grout sedimentation stability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310520531.9A CN104568640A (en) | 2013-10-29 | 2013-10-29 | Cement paste stability evaluation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310520531.9A CN104568640A (en) | 2013-10-29 | 2013-10-29 | Cement paste stability evaluation method |
Publications (1)
| Publication Number | Publication Date |
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| CN104568640A true CN104568640A (en) | 2015-04-29 |
Family
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| CN201310520531.9A Pending CN104568640A (en) | 2013-10-29 | 2013-10-29 | Cement paste stability evaluation method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018177A (en) * | 2016-07-19 | 2016-10-12 | 江苏苏博特新材料股份有限公司 | Quantitative concrete workability testing device and method |
| CN106066392A (en) * | 2016-06-08 | 2016-11-02 | 中国石油集团渤海钻探工程有限公司 | Utilize the method that multi-cartridge cement mortar sedimentation stability evaluating apparatus is evaluated |
| CN109115647A (en) * | 2018-09-30 | 2019-01-01 | 湖南鑫长胜材料科技有限公司 | A kind of method for real-timely testing of emulsified asphalt stability |
| CN109946334A (en) * | 2019-01-29 | 2019-06-28 | 西安近代化学研究所 | Gel state cloud detonator stores high temperature threshold value detection device and detection method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106066392A (en) * | 2016-06-08 | 2016-11-02 | 中国石油集团渤海钻探工程有限公司 | Utilize the method that multi-cartridge cement mortar sedimentation stability evaluating apparatus is evaluated |
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| CN109115647A (en) * | 2018-09-30 | 2019-01-01 | 湖南鑫长胜材料科技有限公司 | A kind of method for real-timely testing of emulsified asphalt stability |
| CN109946334A (en) * | 2019-01-29 | 2019-06-28 | 西安近代化学研究所 | Gel state cloud detonator stores high temperature threshold value detection device and detection method |
| CN109946334B (en) * | 2019-01-29 | 2021-06-15 | 西安近代化学研究所 | Device and method for detecting high-temperature threshold value of gel-state cloud blasting agent storage |
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Application publication date: 20150429 |