CN102022111B - Method for detecting azimuth of damaged oilfield downhole casing - Google Patents
Method for detecting azimuth of damaged oilfield downhole casing Download PDFInfo
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- CN102022111B CN102022111B CN 200910307425 CN200910307425A CN102022111B CN 102022111 B CN102022111 B CN 102022111B CN 200910307425 CN200910307425 CN 200910307425 CN 200910307425 A CN200910307425 A CN 200910307425A CN 102022111 B CN102022111 B CN 102022111B
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Abstract
The invention discloses a method for detecting the azimuth of a damaged oilfield downhole casing. In the method, a casing detector (1) for detecting a casing is connected with a gyroscopic clinometer (2), or an azimuth measuring mechanism (3) is mounted in the casing detector (1); the position of a probe of the casing detector (1) can be calculated by measuring the inclination of the gyroscopic clinometer (2) or the position of the azimuth measuring mechanism (3), and thus, the specific azimuth of the damaged position of the casing can be calculated. In the invention, the specific azimuth of the damaged position of the casing can be visually and precisely detected, and the method has the characteristics of high detection accuracy and less detection error and is simple and convenient to operate. The invention perfects the detection means of the downhole casing and provides important foundations for oilfield downhole analyses. The invention is applicable to the azimuth test of all downhole detection parameters.
Description
Technical field
The present invention relates to a kind of detection method of azimuth of damaged oilfield downhole casing.
Background technology
Whether unimpeded cycle and the quality that directly affects underground work of oilfield downhole casing internal diameter.At present, the method for oil field measuring well setting of casing shape (normal, flexural deformation, leakage, disconnected, wrong etc.) has multi-arm caliper imaging logging, ultrasonovision imaging logging, hawkeye Television Logging, magnetic logging etc.These methods respectively have pluses and minuses, and the situation of casing damage all can be detected, but all can't detect for the concrete orientation of damage location.
Summary of the invention
Technical problem to be solved by this invention is, provide a kind of down-hole casing to damage the detection method in orientation, the method can intuitively detect the concrete orientation at casing damage position accurately, make the detection of down-hole casing become complete, thereby be conducive to provide important foundation for the downhole analysis in oil field.
For solving the problems of the technologies described above, technical scheme of the present invention: a kind of down-hole casing damages the detection method in orientation.The method is that the Casing Detection instrument that will be used for sleeve pipe is detected be connected with gyrolevel, or in the Casing Detection instrument installation position measuring mechanism; The position calculation of the gradient by measuring gyrolevel or azimuthal measurement mechanism goes out the position of the probe of Casing Detection instrument, thereby calculates the concrete orientation at casing damage position.
Above-mentioned down-hole casing damages in the detection method in orientation, it is that Casing Detection instrument and gyrolevel are connected in series concretely, at first carry out marking during detection on ground, determine the position of probe and the gyrolevel of Casing Detection instrument, then go out the position of the probe of Casing Detection instrument by the detection computations to the attitude of gyrolevel own, thereby calculate the concrete orientation at casing damage position.
Aforesaid down-hole casing damages in the detection method in orientation, and it is installation position measuring mechanism in the Casing Detection instrument concretely, determines in advance the position of the probe of Casing Detection instrument and azimuthal measurement mechanism and keeps motionless; Go out the position of the probe of Casing Detection instrument by the position calculation of measuring azimuthal measurement mechanism when detecting, thereby calculate the concrete orientation at casing damage position.
Beneficial effect of the present invention: compared with prior art, adopt method of the present invention can intuitively detect accurately the concrete orientation of the damage location of sleeve pipe, it has the characteristics that the degree of accuracy is higher, error is little simple, convenient and that detect; The detection means of down-hole casing that the present invention is perfect is for the downhole analysis in oil field provides important foundation.The present invention is applicable to the Azimuth testing of all downhole detection parameters.
Description of drawings
Fig. 1 is the syndeton schematic diagram of Casing Detection instrument and gyrolevel;
Fig. 2 is the mounting structure schematic diagram of Casing Detection instrument and azimuthal measurement mechanism.
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
The specific embodiment
Embodiment 1.As shown in Figure 1, adopt the mode of series connection firmly to be connected with gyrolevel 2 in Casing Detection instrument 1, at first carry out marking during detection on ground, determine the position of probe and the gyrolevel 2 of Casing Detection instrument 2, then by the detection to gyrolevel 2 attitudes own, can calculate the position of the probe of Casing Detection instrument 2, thereby calculate the concrete orientation at casing damage position.Gyrolevel 2 is to be applied to a kind of instrument that petroleum industry and geological prospecting drilling well are carried out, be used for strong magnetic mining area and carried out angle of slope and azimuthal measurement in cased wellhole, can be changed the casing deformation that causes by geostatic stress by accurate recording by measuring, and be determined the gradient and the azimuthal data that produce in sleeve pipe by this instrument.
Embodiment 2.As shown in Figure 2, at the interior installation position measuring mechanism 3 of Casing Detection instrument 1.Determine in advance the probe of Casing Detection instrument 1 and the position of azimuthal measurement mechanism 3 during design, and keep motionless; When detecting, by measuring the position of azimuthal measurement mechanism 3, can calculate the position of the probe of Casing Detection instrument 1, thereby calculate the concrete orientation at casing damage position.
Embodiments of the present invention are not limited to above-described embodiment, within the various variations of making under the prerequisite that does not break away from aim of the present invention all belong to protection scope of the present invention.
Claims (1)
1. a down-hole casing damages the detection method in orientation, it is characterized in that: be that the Casing Detection instrument (1) that will be used for sleeve pipe is detected is connected with gyrolevel (2), calculate the probe positions of Casing Detection instrument (1) by the tiltometer of measuring gyrolevel (2), thereby calculate the concrete orientation at casing damage position; It is that Casing Detection instrument (1) and gyrolevel (2) are connected in series, at first carry out marking during detection on ground, determine the position of probe and the gyrolevel (2) of Casing Detection instrument (1), then go out the position of the probe of Casing Detection instrument (1) by the detection computations to the attitude of gyrolevel (2) own, thereby calculate the concrete orientation at casing damage position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910307425 CN102022111B (en) | 2009-09-22 | 2009-09-22 | Method for detecting azimuth of damaged oilfield downhole casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910307425 CN102022111B (en) | 2009-09-22 | 2009-09-22 | Method for detecting azimuth of damaged oilfield downhole casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102022111A CN102022111A (en) | 2011-04-20 |
| CN102022111B true CN102022111B (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910307425 Active CN102022111B (en) | 2009-09-22 | 2009-09-22 | Method for detecting azimuth of damaged oilfield downhole casing |
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| CN (1) | CN102022111B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481506B (en) * | 2014-12-05 | 2017-04-12 | 贵州航天凯山石油仪器有限公司 | Casing breaking position detecting method |
| CN109708595A (en) * | 2018-11-14 | 2019-05-03 | 中国石油天然气股份有限公司 | Downhole casing damage detection method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1358990A (en) * | 2001-12-18 | 2002-07-17 | 大庆石油管理局测井公司 | Magnetic-sensitive detecting method for judging oil well steel sleeve stress distribution |
| CN2570734Y (en) * | 2002-09-28 | 2003-09-03 | 大庆油田有限责任公司 | Combination of frame gyroscope and flexible gyroscope to measure azimuth |
| US7506699B1 (en) * | 2008-02-26 | 2009-03-24 | Michael S. Harvey | Directional drilling tool |
| CN201236696Y (en) * | 2008-08-13 | 2009-05-13 | 大庆油田有限责任公司 | External optical fiber sensor down-hole positioning device of oil water well casing tube |
-
2009
- 2009-09-22 CN CN 200910307425 patent/CN102022111B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1358990A (en) * | 2001-12-18 | 2002-07-17 | 大庆石油管理局测井公司 | Magnetic-sensitive detecting method for judging oil well steel sleeve stress distribution |
| CN2570734Y (en) * | 2002-09-28 | 2003-09-03 | 大庆油田有限责任公司 | Combination of frame gyroscope and flexible gyroscope to measure azimuth |
| US7506699B1 (en) * | 2008-02-26 | 2009-03-24 | Michael S. Harvey | Directional drilling tool |
| CN201236696Y (en) * | 2008-08-13 | 2009-05-13 | 大庆油田有限责任公司 | External optical fiber sensor down-hole positioning device of oil water well casing tube |
Non-Patent Citations (4)
| Title |
|---|
| MIT测井仪在大港油田套管质量检测中的应用;任瑞川等;《测井技术》;20060830;第30卷(第3期);257-259 * |
| 任瑞川等.MIT测井仪在大港油田套管质量检测中的应用.《测井技术》.2006,第30卷(第3期),257-259. |
| 套损方位测井;彭玉辉;《测井技术》;19871231;第11卷(第4期);50-54 * |
| 彭玉辉.套损方位测井.《测井技术》.1987,第11卷(第4期),50-54. |
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| CN102022111A (en) | 2011-04-20 |
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