CN203594388U - Well cementation flushing fluid evaluating device based on shearing rate equivalence principle - Google Patents
Well cementation flushing fluid evaluating device based on shearing rate equivalence principle Download PDFInfo
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- CN203594388U CN203594388U CN201320710678.XU CN201320710678U CN203594388U CN 203594388 U CN203594388 U CN 203594388U CN 201320710678 U CN201320710678 U CN 201320710678U CN 203594388 U CN203594388 U CN 203594388U
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- steel column
- flushing liquor
- well cementation
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- flushing fluid
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Abstract
The utility model discloses a well cementation flushing fluid evaluating device based on the shearing rate equivalence principle. The device mainly comprises an artificial drill core or steel column, an outer cylinder, an adapter substitute, a transmission device, a motor, a framework, a supporting plate and a slurry cup. The supporting plate and the motor are arranged on the framework. The slurry cup filled with flushing fluid is arranged on the supporting plate. The artificial drill core or steel column and the outer cylinder are both located in the flushing fluid inside the slurry cup. The artificial drill core or steel column is fixed to the framework through the adapter substitute. The outer cylinder is connected with the motor through the transmission device. The outer cylinder is provided with two rows of circular holes allowing the flushing liquid to flow, wherein each row of circular holes are spaced by 90 degrees. According to the well cementation flushing fluid evaluating device based on the shearing rate equivalence principle, the artificial drill core or steel column is used for simulating a well wall and a sleeve in a static state, so that the device is more close to engineering practice; the well cementation flushing fluid evaluating device has the advantages of being simple in operation, high in comparability and wide in application range, thereby having broad market prospects.
Description
Technical field
The utility model relates to the evaluating apparatus of the flushing liquor flush efficiency of cementing the well in oil exploration and development fields drilling engineering.
Background technology
In well cementing process, the mud cake that on the drilling fluid that casing wall adheres to and the borehole wall, drilling fluid dehydration forms will directly affect the bonding quality of Behavior of Hardened Cement Paste and sleeve pipe and the borehole wall.In order to improve well cementation bonding quality and to extend the oil well life-span, need to remove the drilling fluid mud cake on drilling fluid and the borehole wall on casing wall.For this problem, before well cementing operation, need to inject a certain amount of flushing liquor casing wall and the borehole wall are rinsed, peel off wall cake, improve well cementation interface, be cement paste and good cementing the creating conditions at well cementation interface.Through years development, obtain very much progress in the research aspect well cementation flushing liquor both at home and abroad, but do not formed yet unified evaluation means for the flush efficiency evaluation aspect of flushing liquor.
Through the literature search of existing well cementation flushing liquor evaluating apparatus is found, Chinese utility model patent " well cementation flushing liquor flush efficiency quantitative simulation evaluating apparatus " (CN203161216U), this patent is according to the relation between rotation viscometer principle medium speed and wall shear rate, by the rotating speed of adjusting device, reading pointer reading, the wall shear stress of cylindrical shaft wall and the wall shear stress of down-hole annular are close, and under this rotating speed, evaluate the flush efficiency of flushing liquor to cylindrical shaft wall.This device is to simulate static casing wall or the borehole wall with the urceolus of viscometer rotation, have the impact of rotary centrifugal force and can not simulate artificial core the problem that forms mud cake, and measuring process is more loaded down with trivial details.
Utility model content
The purpose of this utility model is to provide a kind of well cementation flushing liquor evaluating apparatus that equates principle based on shear rate, the principle that this device equates with the shear rate of well cementation annular space wall based on artificial core or steel column wall, utilize artificial core or steel column to simulate the borehole wall and the sleeve pipe under static state, more approaches engineering reality, there is feature simple to operate, that contrast property is strong, applied widely, overcome the deficiency existing in flushing liquor developing result Simulation evaluation.
For reaching above technical purpose, the utility model provides following technical scheme.
Equate the well cementation flushing liquor evaluating apparatus of principle based on shear rate, mainly formed by artificial core or steel column, urceolus, crossover sub, transmission device, motor, framework, Support tray, slurry cup.
On the described framework that is positioned on base, have can free adjustment height Support tray and motor, on described Support tray, place the slurry cup that flushing liquor is housed, described artificial core or steel column, urceolus are all in the flushing liquor in slurry cup, described artificial core or steel column are fixed on framework by crossover sub, described urceolus is connected with motor by transmission device, described motor is connected with speed regulator, regulates the rotating speed of urceolus.
Artificial core or the steel column simulation borehole wall or sleeve pipe for this device, urceolus is rotated by driven by motor, by the flushing liquor that rotarily drives of urceolus, static artificial core or steel column is washed away.Regulate the rotating speed of urceolus by speed regulator, utilize the change of rotating speed to obtain different shear rates, by the change of urceolus rotating speed, artificial core or steel column wall shear rate are equated with well cementation annular space wall shear rate.
Described urceolus has two rows for flushing liquor mobile circular hole, each row's circular hole be spaced apart 90 °.
Described Support tray can regulate and highly make flushing liquor liquid level in slurry cup the mud cake or the clay coating top that on artificial core or steel column, do not form completely.
Utilize the flush efficiency of this device evaluating cementing flushing liquor, in drilling fluid, to form mud cake simulated formation mud cake by artificial core, or steel column adheres to the situation of clay coating analog casing adhesion drilling fluid in drilling fluid, weighing has the artificial core of mud cake or has the steel column of clay coating in the quality of rinsing certain hour front and back, and artificial core without mud cake or steel column the quality during without clay coating, to rinse the flush efficiency of the percentage quantitative description well cementation flushing liquor that rinses out mud cake or clay coating in certain hour to stratum mud cake or sleeve pipe clay coating.
The flush efficiency at steel column simulation well cementation the first interface for the utility model, by the flush efficiency of artificial core simulation well cementation second contact surface.
Compared with prior art, the principle that the utility model equates with the shear rate of well cementation annular space wall based on artificial core or steel column wall, with the static permeability artificial core simulation borehole wall, with static steel column analog casing, return speed in conjunction with well cementation casing programme and annular space, the evaluation of the flush efficiency to flushing liquor in well cementing process is more true, reliable simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-artificial core or steel column, 2-urceolus, 3-crossover sub, 4-transmission device, 5-speed regulator, 6-motor, 7-framework, 8-base, 9-Support tray, 10-slurry cup.
Fig. 2 is the generalized section of urceolus.
In figure: 11-M40 screw thread, 12-groove, 13-circular hole.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Referring to Fig. 1.
Equate the well cementation flushing liquor evaluating apparatus of principle based on shear rate, mainly formed by artificial core or steel column 1, urceolus 2, crossover sub 3, transmission device 4, motor 6, framework 7, Support tray 9, slurry cup 10.
On the described framework 7 that is positioned on base 8, have can free adjustment height Support tray 9 and motor 6, on described Support tray, place the slurry cup 10 that flushing liquor is housed, described artificial core or steel column 1, urceolus 2 are all in the flushing liquor in slurry cup, described artificial core or steel column are fixed on framework by crossover sub 3, described urceolus is connected with motor by transmission device 4, described motor is connected with speed regulator 5, regulates the rotating speed of urceolus.
Described urceolus has two rows for flushing liquor mobile circular hole, each row's circular hole be spaced apart 90 °.
Utilize fixing artificial core or steel column 1 to simulate the borehole wall or the sleeve pipe under static state, the flushing liquor that rotarily drives by urceolus 2 washes away the static borehole wall or sleeve pipe, and therefore the height of Support tray should be adjusted to and make flushing liquor liquid level in slurry cup the mud cake or the clay coating top that on artificial core or steel column, do not form completely.
The simulation artificial core of the borehole wall or the steel column diameter of analog casing are 25.00mm, and height is 40.00mm; The internal diameter of urceolus is 27.60mm, wall thickness 2.00mm, and height is 83.90mm.
Referring to Fig. 2.
Urceolus is connected with transmission device by screw thread 11, and urceolus has a groove 12 apart from 60.0mm place, its bottom, around urceolus, is having near below groove the circular hole 13 that two row's diameters are 3.0mm, and center of circular hole is respectively apart from groove 3.0mm and 9.0mm, and circular hole is spaced apart 90 °.
Claims (2)
1. one kind equates the well cementation flushing liquor evaluating apparatus of principle based on shear rate, mainly by artificial core or steel column (1), urceolus (2), crossover sub (3), transmission device (4), motor (6), framework (7), Support tray (9), slurry cup (10) composition, it is characterized in that, on the described framework (7) that is positioned on base (8), have can free adjustment height Support tray (9) and motor (6), on described Support tray, place the slurry cup (10) that flushing liquor is housed, described artificial core or steel column (1), urceolus (2) is all in the flushing liquor in slurry cup, described artificial core or steel column are fixed on framework by crossover sub (3), described urceolus is connected with motor by transmission device (4), described motor is connected with speed regulator (5), described urceolus has two rows for flushing liquor mobile circular hole, each row's circular hole be spaced apart 90 °.
2. well cementation flushing liquor evaluating apparatus as claimed in claim 1, is characterized in that, the height of described Support tray is adjusted to and makes flushing liquor liquid level in slurry cup the mud cake or the clay coating top that on artificial core or steel column, do not form completely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710678.XU CN203594388U (en) | 2013-11-12 | 2013-11-12 | Well cementation flushing fluid evaluating device based on shearing rate equivalence principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710678.XU CN203594388U (en) | 2013-11-12 | 2013-11-12 | Well cementation flushing fluid evaluating device based on shearing rate equivalence principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203594388U true CN203594388U (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320710678.XU Withdrawn - After Issue CN203594388U (en) | 2013-11-12 | 2013-11-12 | Well cementation flushing fluid evaluating device based on shearing rate equivalence principle |
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| CN (1) | CN203594388U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541675A (en) * | 2013-11-12 | 2014-01-29 | 西南石油大学 | Well cementation flushing fluid evaluation device and method based on principle of identical shearing rate |
| CN108240185A (en) * | 2016-12-27 | 2018-07-03 | 中国石油天然气股份有限公司 | Evaluation device and method for well cementation flushing efficiency |
| CN108414402A (en) * | 2018-02-06 | 2018-08-17 | 浙江迎丰科技股份有限公司 | A kind of rotary viscosimeter |
-
2013
- 2013-11-12 CN CN201320710678.XU patent/CN203594388U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541675A (en) * | 2013-11-12 | 2014-01-29 | 西南石油大学 | Well cementation flushing fluid evaluation device and method based on principle of identical shearing rate |
| CN103541675B (en) * | 2013-11-12 | 2015-12-09 | 西南石油大学 | A kind of well cementation flushing liquor evaluating apparatus based on shear rate principle and method |
| CN108240185A (en) * | 2016-12-27 | 2018-07-03 | 中国石油天然气股份有限公司 | Evaluation device and method for well cementation flushing efficiency |
| CN108414402A (en) * | 2018-02-06 | 2018-08-17 | 浙江迎丰科技股份有限公司 | A kind of rotary viscosimeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140514 Effective date of abandoning: 20151209 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |