CN1072497A - Mud cake thickness measuring apparatus - Google Patents
Mud cake thickness measuring apparatus Download PDFInfo
- Publication number
- CN1072497A CN1072497A CN 91110919 CN91110919A CN1072497A CN 1072497 A CN1072497 A CN 1072497A CN 91110919 CN91110919 CN 91110919 CN 91110919 A CN91110919 A CN 91110919A CN 1072497 A CN1072497 A CN 1072497A
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- CN
- China
- Prior art keywords
- mud cake
- sliding sleeve
- measuring apparatus
- thickness measuring
- cake thickness
- 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.)
- Pending
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
Mud cake thickness measuring apparatus belongs to petroleum industry wellbore liquid leaching loss mud cake thickness measuring apparatus table, is made up of digital dial gauge, sliding sleeve, column and counterweight etc.Hinged and the sliding sleeve of digital dial gauge and sliding sleeve is on column, and when counterweight loaded on the clock gauge depression bar, pressing plate was pressed into mud cake, according to recording heap(ed) capacity and dependent variable relation, by geometric construction, can directly read the thickness of mud cake.Be characterized in good stability, the measuring accuracy height.
Description
The present invention relates to a kind of petroleum industry wellbore liquid leaching loss mud cake thickness measuring apparatus table.The electromechanical assembly that it is made up of digital dial gauge, slide bar, support, weights etc.Its principle is the appropriate location that clock gauge is fixed on principal post as shown in Figure 1, mud cake is placed on below the pressing plate, when on clock gauge, loading, (add weights), pressing plate promptly contacts with mud cake, along with heap(ed) capacity increases, the continuous ironed mud cake of pressing plate, this moment, digital dial gauge promptly demonstrated the relation (being stress-strain relation) of heap(ed) capacity and mud cake distortion.According to stress-strain relation, make stress strain diagram, mud cake thickness can be directly read or also mud cake thickness can be recorded by linear equation calculating.
Measure above-mentioned mud cake thickness at present both at home and abroad, all adopt Steel Ruler directly to insert in the mud cake, read mud cake thickness with ocular estimate, this mensuration is because after mud cake is squeezed, be close to chi face both sides, the mud cake face swells, and makes that range estimation face reading is higher, adds the influence of range estimation person's test angle, make measuring error up to the thick 1mm of the general mud cake of 0.3mm～0.5mm(～5mm), quality assessment brings considerable influence to drilling fluid.
The present invention's purpose is to avoid above-mentioned prior art weak point, and a kind of Mechatronic device product is provided, and eliminates artificial measuring error, makes measurement result avoid randomness, and average error is one of percentage millimeter.
Purpose of the present invention can reach by following measure:
1) uses digital dial gauge,, obtain the relation that loads with the mud cake distortion, make stress strain diagram by the method that on mud cake, loads;
2) method for drafting of stress strain diagram can pass through geometric construction, direct-reading mud cake thickness;
3) on stress strain diagram, calculate by linear equation, y=a+bx(y is distortion, and x is a heap(ed) capacity, and a is that mud cake is thick, b is a straight slope).Try to achieve mud cake thickness.
The present invention is made up of following parts: on principal post 1, fixedly sliding sleeve 2, and sliding sleeve 2 is connected as a single entity with digital dial gauge 3, and depression bar 4 is an one with clock gauge, and the depression bar displacement is to be shown by clock gauge.Depression bar 4 tops can add counterweight 5, and pressing plate is placed mud cake 76 times.Mud cake is leak-off plate 8 down, and the leak-off plate is table top 9 down.
The present invention compared with prior art has the following advantages:
1) one of high average error percentage of precision millimeter;
2) good stability does not vary with each individual, and has avoided randomness.
Fig. 1 is the structural drawing of mud cake thickness measuring apparatus.
Claims (2)
1, a kind of drilling fluid mud cake thickness measuring apparatus, constitute by digital dial gauge 3, column 1, sliding sleeve 2, depression bar 4 and counterweight 5 etc., also sliding sleeve is on column 1 at one with sliding sleeve 2 hinge joints to it is characterized in that digital dial gauge 3, and counterweight 5 directly loads on the depression bar 4 of clock gauge 3.
2, a kind of measuring method of drilling fluid mud cake thickness is characterized in that by load the method that obtains strain on mud cake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91110919 CN1072497A (en) | 1991-11-19 | 1991-11-19 | Mud cake thickness measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91110919 CN1072497A (en) | 1991-11-19 | 1991-11-19 | Mud cake thickness measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1072497A true CN1072497A (en) | 1993-05-26 |
Family
ID=4910346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91110919 Pending CN1072497A (en) | 1991-11-19 | 1991-11-19 | Mud cake thickness measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1072497A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963609A (en) * | 2010-09-10 | 2011-02-02 | 中国海洋石油总公司 | Mud cake performance comprehensive evaluation method and device |
| CN102818881A (en) * | 2012-08-21 | 2012-12-12 | 中国石油大学(北京) | High-density oil testing work liquid sedimentation stability test device and method |
| CN104196525A (en) * | 2014-07-29 | 2014-12-10 | 中国石油大学(华东) | Mud cake thickness measurement method based on formation testing |
| CN105867438A (en) * | 2016-06-06 | 2016-08-17 | 中国地质大学（武汉） | Mud cake thickness precise control device for indoor experiment |
| CN107806805A (en) * | 2017-10-31 | 2018-03-16 | 郑州广角科贸有限公司 | A kind of thickness detecting equipment for electronic product |
| CN115324507A (en) * | 2021-04-25 | 2022-11-11 | 中国石油天然气集团有限公司 | Device and method for measuring thickness of mud cake of drilling fluid |
-
1991
- 1991-11-19 CN CN 91110919 patent/CN1072497A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963609A (en) * | 2010-09-10 | 2011-02-02 | 中国海洋石油总公司 | Mud cake performance comprehensive evaluation method and device |
| CN101963609B (en) | 2010-09-10 | 2013-07-31 | 中国海洋石油总公司 | Mud cake performance comprehensive evaluation method and device |
| CN102818881A (en) * | 2012-08-21 | 2012-12-12 | 中国石油大学(北京) | High-density oil testing work liquid sedimentation stability test device and method |
| CN104196525A (en) * | 2014-07-29 | 2014-12-10 | 中国石油大学(华东) | Mud cake thickness measurement method based on formation testing |
| CN104196525B (en) * | 2014-07-29 | 2016-04-13 | 中国石油大学(华东) | Based on the cake thickness measuring method of formation testing |
| CN105867438A (en) * | 2016-06-06 | 2016-08-17 | 中国地质大学（武汉） | Mud cake thickness precise control device for indoor experiment |
| CN105867438B (en) * | 2016-06-06 | 2018-09-04 | 中国地质大学（武汉） | A kind of laboratory experiment cake thickness precise controlling device |
| CN107806805A (en) * | 2017-10-31 | 2018-03-16 | 郑州广角科贸有限公司 | A kind of thickness detecting equipment for electronic product |
| CN115324507A (en) * | 2021-04-25 | 2022-11-11 | 中国石油天然气集团有限公司 | Device and method for measuring thickness of mud cake of drilling fluid |
| CN115324507B (en) * | 2021-04-25 | 2024-03-01 | 中国石油天然气集团有限公司 | Drilling fluid mud cake thickness measuring device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |