CN109406334A - A method of flushing liquor flush efficiency is evaluated with weight method - Google Patents
A method of flushing liquor flush efficiency is evaluated with weight method Download PDFInfo
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- CN109406334A CN109406334A CN201811236124.4A CN201811236124A CN109406334A CN 109406334 A CN109406334 A CN 109406334A CN 201811236124 A CN201811236124 A CN 201811236124A CN 109406334 A CN109406334 A CN 109406334A
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- slurry cup
- weight
- mud cake
- flushing liquor
- flushing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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- Life Sciences & Earth Sciences (AREA)
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- Analytical Chemistry (AREA)
- Biochemistry (AREA)
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- Pathology (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses a kind of methods with weight method evaluation flushing liquor flush efficiency, specific steps include testing slurry cup to rinse certain time in flushing liquor with a certain speed, weigh slurry cup weight change, the variation is to rinse the mud cake reduction amount of front and back, that is mud cake removal amount, mud cake quantity reflection flush efficiency is rinsed out in unit time, can be carried out different flushing liquors using it and be rinsed that performances compare and property of flush fluid is evaluated.This method is easy to operate, reliable and practical.
Description
Technical field
The present invention relates to Cementing field, especially a kind of method with weight method evaluation flushing liquor flush efficiency.
Background technique
The mudcake effect cement slurry that well-flushing is formed on the borehole wall with drilling fluid and the borehole wall, casing it is cementing, it is clear with flushing liquor
Except mud cake is to improve one of cementing quality important measures.But property of flush fluid and cleaning efficiency are so far without rigorous, quantitative
Evaluation method, reflection flushing effect can only be by being moistened with the rotational viscometer outer cylinder of drilling fluid equipped with mould in flushing liquor slurry cup
The speed rotation observation residual how much qualitative determination of drilling fluid after a certain period of time is returned in quasi- well, preciseness is poor, and evaluation result lacks quasi-
True property and convincingness influence flushing also without the relevant regulations of cleaning efficiency evaluation in current specifications, standard to a certain extent
Liquid research development therefore establish the flushing liquor cleaning efficiency evaluation method of quantization, for evaluation property of flush fluid provide science according to
According to very necessary.
Summary of the invention
A kind of weight method evaluation flushing liquor flush efficiency is provided it is an object of the invention to solve above-mentioned technical problem
Method, easy to operate, data are reliable, and evaluation method is objective practical.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme:
A method of flushing liquor flush efficiency is evaluated with weight method, comprising the following steps:
1) the slurry cup cylinder in the Behavior of Hardened Cement Paste cleaned up and casing bonding force measurement device is taken, is packed into drilling fluid to scale
Line forms mud cake under the conditions of certain temperature and pressure, outwells and drip net drilling fluid, weighs slurry cup cylinder weight, this weight is to rinse
Preceding slurry cup cylinder and mud cake weight Q1;
2) it will be filled with flushing liquor in the slurry cup cylinder with mud cake to slurry cup graduation mark, be placed on Behavior of Hardened Cement Paste and casing bonding force is surveyed
Determine on the slurry cup pallet of device, adjustment pallet to tray position line, pendency insertion flushing liquor setting position starts speed regulating motor mould
Upward velocity rotation, shuts down remove slurry cup cylinder after a certain period of time in quasi- well, outwells and drip net flushing liquor, weighs slurry cup cylinder weight,
Slurry cup cylinder and mud cake weight Q2 after being rinsed;
3) it is to rinse out mud cake in the time with the speed that flushing liquor, which rinses front and back slurry cup and the difference Q1-Q2 of mud cake weight,
Weight rinses out mud cake quantity reflection flush efficiency in the unit time, can carry out different flushing liquors flushing performances using it and compare
And property of flush fluid evaluation.
The beneficial effects of the present invention are: with cement slurry cleaning efficiency assessment technique being dipped in outside full rotational viscometer at present
The cement slurry immersion of cylinder is filled with a certain speed (simulation cleaning solution upward velocity in well) rotation in cleaning solution slurry cup, and naked eyes are seen
It examines and how much remains cement slurry on certain time inner/outer tube, qualitative evaluation, this method human factor is larger, and evaluation is not scientific, not sternly
Sincerely.This method, which rinses out mud cake weight (Q1-Q2) by flushing liquor in the analytical unit time, can accurately obtain flush efficiency, behaviour
Make simply, data are reliable, and evaluation method is objective practical.
Specific embodiment
The present invention is described in further detail below:
A kind of method with weight method evaluation flushing liquor flush efficiency of the invention, the specific steps are as follows:
1) take clean up " Behavior of Hardened Cement Paste and casing bonding force measurement device " (applied for utility model patent, the patent No.:
ZL 201620555398.X) in slurry cup cylinder, be packed into drilling fluid to interior graduation mark, form mud under the conditions of certain temperature and pressure
Net drilling fluid is outwelled and dripped to cake, weighs slurry cup cylinder weight, this weight is slurry cup cylinder and mud cake weight Q1 before rinsing.
2) it will be filled with flushing liquor in the slurry cup cylinder with mud cake to slurry cup graduation mark, be placed on " Behavior of Hardened Cement Paste and casing bonding force
On the slurry cup pallet of measurement device ", adjustment pallet to tray position line, pendency insertion flushing liquor setting position, starting speed regulation electricity
Machine simulates upward velocity rotation in well, shuts down remove slurry cup cylinder after a certain period of time, outwells and drip net flushing liquor, weighs slurry cup cylinder weight
Amount, slurry cup cylinder and mud cake weight Q2 after being rinsed.
3) it is to rinse out mud cake in the time with the speed that flushing liquor, which rinses front and back slurry cup and the difference Q1-Q2 of mud cake weight,
Weight.Mud cake quantity reflection flush efficiency is rinsed out in unit time, can be carried out different flushing liquors flushing performances using it and be compared
And property of flush fluid evaluation.
The interior experiment slurry cup for having mud cake is rinsed certain time with a certain speed by method of the invention in flushing liquor, is weighed
Slurry cup weight change, the variation are to rinse the mud cake reduction amount of front and back, i.e. mud cake removal amount, can be commented compared with other flushing liquors
Its flush efficiency of valence and performance.Compare property of flush fluid with this method, evaluation flushing liquor flush efficiency is easy to operate, reliable real
With.
In conclusion the contents of the present invention are not limited in the above embodiments, those skilled in the art can be
It is proposed other embodiments within technological guidance's thought of the invention, but these embodiments be included in the scope of the present invention it
It is interior.
Claims (1)
1. a kind of method with weight method evaluation flushing liquor flush efficiency, which comprises the following steps:
1) the slurry cup cylinder in the Behavior of Hardened Cement Paste that cleans up and casing bonding force measurement device is taken, is packed into drilling fluid to graduation mark,
Mud cake is formed under the conditions of certain temperature and pressure, outwells and drip net drilling fluid, weighs slurry cup cylinder weight, this weight is slurry cup before rinsing
Cylinder and mud cake weight Q1;
2) it will be filled with flushing liquor in the slurry cup cylinder with mud cake to slurry cup graduation mark, be placed on Behavior of Hardened Cement Paste and the measurement of casing bonding force fills
On the slurry cup pallet set, adjustment pallet to tray position line, pendency insertion flushing liquor setting position, starting speed regulating motor simulation well
Middle upward velocity rotation, shuts down remove slurry cup cylinder after a certain period of time, outwell and drip net flushing liquor, weigh slurry cup cylinder weight, obtain
Slurry cup cylinder and mud cake weight Q2 after flushing;
3) it is to rinse out mud cake weight in the time with the speed that flushing liquor, which rinses front and back slurry cup and the difference Q1-Q2 of mud cake weight,
Amount rinses out mud cake quantity reflection flush efficiency in the unit time, using its can carry out different flushing liquors rinse performances compare and
Property of flush fluid evaluation.
Priority Applications (1)
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CN201811236124.4A CN109406334A (en) | 2018-10-22 | 2018-10-22 | A method of flushing liquor flush efficiency is evaluated with weight method |
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CN201811236124.4A CN109406334A (en) | 2018-10-22 | 2018-10-22 | A method of flushing liquor flush efficiency is evaluated with weight method |
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CN201811236124.4A Pending CN109406334A (en) | 2018-10-22 | 2018-10-22 | A method of flushing liquor flush efficiency is evaluated with weight method |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110617018A (en) * | 2019-09-16 | 2019-12-27 | 西南石油大学 | Device and method for evaluating flushing efficiency of filter cake of well cementation cement injection drilling fluid |
CN113063692A (en) * | 2020-01-02 | 2021-07-02 | 中国石油天然气股份有限公司 | Method and apparatus for detecting well cementing wash fluid |
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CN113063692A (en) * | 2020-01-02 | 2021-07-02 | 中国石油天然气股份有限公司 | Method and apparatus for detecting well cementing wash fluid |
CN113063692B (en) * | 2020-01-02 | 2022-10-04 | 中国石油天然气股份有限公司 | Method and apparatus for detecting well cementing wash fluid |
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Application publication date: 20190301 |