RU2009105922A - METHOD FOR RESEARCHING THE INTERNAL SURFACE OF CASING - Google Patents
METHOD FOR RESEARCHING THE INTERNAL SURFACE OF CASING Download PDFInfo
- Publication number
- RU2009105922A RU2009105922A RU2009105922/03A RU2009105922A RU2009105922A RU 2009105922 A RU2009105922 A RU 2009105922A RU 2009105922/03 A RU2009105922/03 A RU 2009105922/03A RU 2009105922 A RU2009105922 A RU 2009105922A RU 2009105922 A RU2009105922 A RU 2009105922A
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- RU
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- Prior art keywords
- casing
- main
- auxiliary
- converter
- profile
- Prior art date
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- Geophysics And Detection Of Objects (AREA)
Abstract
1. Способ исследования профиля внутренней поверхности обсадных колонн с буровым раствором в скважине прибором радиусного метода контроля зазоров между внутренней поверхностью колонны и наружной поверхностью защитного кожуха вращающегося датчика прибора с двумя присоединенными к измерительной схеме идентичными по параметрам основным и вспомогательным трансформаторными преобразователями с полюсными наконечниками, обращенными к стенке кожуха, заключающийся в том, что в каждой профилографируемой точке исследуемого профиля производят измерение выходных напряжений основного преобразователя, вычитают из них выходные напряжения вспомогательного преобразователя с последующей регистрацией и обработкой получаемых текущих разностных напряжений, отличающийся тем, что выходные напряжения вспомогательного преобразователя формируют пропорциональными магнитной проницаемости раствора путем шунтирования его полюсных наконечников ферромагнитным телом с зазором по отношению к наружной поверхности кожуха, обеспечивающим свободную циркуляцию раствора, при этом ферромагнитное тело размещают от наружной поверхности кожуха на расстоянии, не превышающем диапазона работы преобразователей, а сам вспомогательный преобразователь устанавливают на одном высотном уровне с основным. ! 2. Способ по п.1, отличающийся тем, что при проведении исследований осуществляют корректировку градуировочной зависимости датчика с учетом изменения магнитной проницаемости раствора, для чего производят кратковременное магнитное шунтирование полюсных наконечников основного преобразователя и формируют соответствующее нулевому 1. A method for studying the profile of the inner surface of casing strings with drilling fluid in the borehole with the radial method for checking the gaps between the inner surface of the casing and the outer surface of the protective casing of the rotary sensor of the device with two main and auxiliary transformers with pole tips facing identical to the measuring circuit, facing to the wall of the casing, consisting in the fact that at each profiled point of the studied profile producing t is the measurement of the output voltages of the main converter, the output voltages of the auxiliary converter are subtracted from them with subsequent registration and processing of the obtained current differential voltages, characterized in that the output voltages of the auxiliary converter are formed proportional to the magnetic permeability of the solution by shunting its pole tips with a ferromagnetic body with a gap with respect to the outer the surface of the casing, providing free circulation of the solution, while the ferromagnet the total body is placed from the outer surface of the casing at a distance not exceeding the operating range of the transducers, and the auxiliary transducer itself is installed at the same height level with the main one. ! 2. The method according to claim 1, characterized in that during the studies, the calibration of the sensor is adjusted taking into account changes in the magnetic permeability of the solution, for which a short-term magnetic shunting of the pole pieces of the main transducer is performed and the corresponding zero
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2009105922/03A RU2401383C1 (en) | 2009-02-19 | 2009-02-19 | Method of analysing well casing inner surface |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2009105922/03A RU2401383C1 (en) | 2009-02-19 | 2009-02-19 | Method of analysing well casing inner surface |
Publications (2)
Publication Number | Publication Date |
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RU2009105922A true RU2009105922A (en) | 2010-08-27 |
RU2401383C1 RU2401383C1 (en) | 2010-10-10 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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RU2009105922/03A RU2401383C1 (en) | 2009-02-19 | 2009-02-19 | Method of analysing well casing inner surface |
Country Status (1)
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RU (1) | RU2401383C1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109196183B (en) * | 2016-05-31 | 2023-02-28 | 智能井口系统有限公司 | Apparatus and method for measuring tubing within an oil well structure |
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2009
- 2009-02-19 RU RU2009105922/03A patent/RU2401383C1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
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RU2401383C1 (en) | 2010-10-10 |
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MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20130220 |