WO2009091290A1 - Device for measuring the inside diameter of a pipe - Google Patents
Device for measuring the inside diameter of a pipe Download PDFInfo
- Publication number
- WO2009091290A1 WO2009091290A1 PCT/RU2008/000808 RU2008000808W WO2009091290A1 WO 2009091290 A1 WO2009091290 A1 WO 2009091290A1 RU 2008000808 W RU2008000808 W RU 2008000808W WO 2009091290 A1 WO2009091290 A1 WO 2009091290A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pipe
- signal
- receiving coils
- inside diameter
- measuring
- Prior art date
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/12—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring diameters
- G01B7/13—Internal diameters
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/08—Measuring diameters or related dimensions at the borehole
- E21B47/085—Measuring diameters or related dimensions at the borehole using radiant means, e.g. acoustic, radioactive or electromagnetic
Definitions
- the invention relates to the field of the oil industry, and in particular to devices for determining the internal diameter of pipes placed in a well, necessary for diagnosing the condition of the pipes in the well and allowing, in combination with other measurements, to determine the residual wall thickness of the pipe.
- the problem to which the invention is directed is to create a simple method for determining the inner diameter of the pipe placed in the well.
- the technical result achieved by the implementation of the proposed technical solution is to increase the range of values measured diameters with a given error, including when influenced by factors such as eccentricity, the presence of a conducting fluid in the pipe, variations in the magnetic and electrical properties of the material of the measured pipes.
- the device for determining the inner diameter of the pipe contains a means for receiving a signal, means for transmitting a signal, a source of exciting oscillations and means for recording and processing signals, the means for transmitting a signal made in the form of at least one transmitting coil and the signal receiving means is made in the form of at least two receiving coils, moreover, the measurements are carried out at two fixed frequencies, and to determine the inner diameter of the pipe use only the amplitude values of the EMF in at least two receiving coils.
- the turns of at least one transmitting coil and at least two receiving coils are wound in the plane of the cross section of the pipe.
- At least one transmitting coil and at least two receiving coils have the same outer diameter.
- the device further comprises a switch.
- At least one transmitting coil and at least two receiving coils are located on the same axis that coincides with the axis of the measured pipe.
- Fig.l is a schematic diagram of a device for measuring the inner diameter of pipes.
- a device for measuring the inner diameter of the pipes includes a source T (I) of exciting oscillations, at least two ring transmitting coils Ll (3), L2 (4), at least two ring receiving coils L3 ( 5), L4 (6), a means for recording and measuring signals R (7), a switch K (2), which connects the source T to one of the transmitting coils.
- Coils Ll, L2, L3, L4 are located on the same axis, coinciding with the axis of the measured pipe and have the same outer diameter.
- the operation of the device is as follows.
- the source ⁇ (l) of excitatory oscillations forms a signal consisting of harmonic oscillations with frequencies Fl, F2 (for definiteness, we assume that F2 is greater than Fl).
- the source T (I) is connected to one of the two transmitting coils Ll (3), L2 (4) depending on the selected sub-range of measured diameters.
- the means for recording and measuring signals R (7) selects the EMF components with frequencies Fl, F2 at the terminals of the receiving coils L ⁇ (5), L4 (6) and measures their amplitudes.
- four EMF values are obtained - U31, U32, U41, U42 for each subrange, where the first index denotes a coil, and in the second, frequency.
- the required inner diameter (ID) of the pipe is determined by the formula and unambiguous dependencies calculated in advance for each subrange of the dimeters:
- n and t are constant coefficients that are calculated based on a given interval of measured diameters and its breakdown into sub-ranges, maximum diameter of coils, intervals of possible changes in magnetic permeability and conductivity, maximum mixing the axis of the tool relative to the axis of the pipe, the maximum conductivity of the liquid filling the pipe, the maximum error in determining the inner diameter, operating frequencies.
- the determination of ID is made according to the known value of the S-auxiliary value associated with the established design relationships with the inner diameter of the pipe.
- the error of this determination due to the influence of the parameters of the material of the pipe filling the brine pipe and the possible deviation of the axis of the coils from the axis of the pipe is minimized by the selection of the coefficients p and t for each subrange of measured diameters.
Abstract
The invention relates to the oil industry, in particular, to devices for measuring the inside diameter of a pipe. The inventive device for measuring the inside diameter of a pipe comprises a signal receiving means, a signal transmitting means, an excite oscillation source and a signal recording and processing means. The signal transmitting means is designed in the form of at least one transmission coil and the signal receiving means is in the form of at least two receiving coils. The measurements are carried out on two fixed frequencies. The inside diameter of a pipe is measured by using only the peak electromotive force values in at least two receiving coils. The device makes it possible to increase the value range of diameters to be measured with a specified error.
Description
Устройство для определения внутреннего диаметра трубы Device for determining the inner diameter of the pipe
Область техники, к которой относится изобретениеFIELD OF THE INVENTION
Изобретение относится к области нефтяной промышленности, а именно к устройствам для определения внутреннего диаметра труб, размещенных в скважине, необходимых для диагностики состояния труб в скважине и позволяющих в сочетании с данными других измерений определить остаточную толщину стенок трубы.The invention relates to the field of the oil industry, and in particular to devices for determining the internal diameter of pipes placed in a well, necessary for diagnosing the condition of the pipes in the well and allowing, in combination with other measurements, to determine the residual wall thickness of the pipe.
Уровень техникиState of the art
Из уровня техники известно устройство для определения внутреннего диаметра трубы [см. патент US 4546314 публ. 08.10.1985]. Недостатки данного устройства заключаются в относительном узком интервале диаметра измеряемых труб и необходимости осуществлять не только амплитудные, но и фазовые измерения электрических сигналов, что делает измерительную часть прибора весьма сложной.The prior art device for determining the inner diameter of the pipe [see US patent 4,546,314 publ. 10/08/1985]. The disadvantages of this device are the relatively narrow range of the diameter of the measured pipes and the need to carry out not only amplitude, but also phase measurements of electrical signals, which makes the measuring part of the device very difficult.
Сущность изобретенияSUMMARY OF THE INVENTION
Задача, на решение которой направлено заявляемое изобретение, состоит в создание простого способа определения внутреннего диаметра трубы, размещенной в скважине.The problem to which the invention is directed, is to create a simple method for determining the inner diameter of the pipe placed in the well.
Технический результат, достигаемый при реализации заявляемого технического решения, заключается в увеличении диапазона значений
измеряемых диаметров с заданной погрешностью, в том числе, при влиянии таких факторов, как эксцентриситет, наличие в трубе проводящей жидкости, вариации магнитных и электрических свойств материала измеряемых труб.The technical result achieved by the implementation of the proposed technical solution is to increase the range of values measured diameters with a given error, including when influenced by factors such as eccentricity, the presence of a conducting fluid in the pipe, variations in the magnetic and electrical properties of the material of the measured pipes.
Поставленный технический результат достигается за счет того, что устройство для определения внутреннего диаметра трубы, содержит средство приема сигнала, средство передачи сигнала, источник возбуждающих колебаний и средство регистрации и обработки сигналов, причем средство передачи сигнала выполнено в виде, по меньшей мере, одной передающей катушки, а средство приема сигнала выполнено в виде, по меньшей мере, двух приемных катушек, причем измерения проводятся на двух фиксированных частотах, а для определения внутреннего диаметра трубы используют только амплитудные значения ЭДС в , по меньшей мере, двух приемных катушках.The technical result is achieved due to the fact that the device for determining the inner diameter of the pipe contains a means for receiving a signal, means for transmitting a signal, a source of exciting oscillations and means for recording and processing signals, the means for transmitting a signal made in the form of at least one transmitting coil and the signal receiving means is made in the form of at least two receiving coils, moreover, the measurements are carried out at two fixed frequencies, and to determine the inner diameter of the pipe use only the amplitude values of the EMF in at least two receiving coils.
Кроме того, в частном случае реализации изобретения витки, по меньшей мере, одной передающей катушки и, по меньшей мере, двух приемных катушек, намотаны в плоскости поперечного сечения трубы.In addition, in the particular case of the invention, the turns of at least one transmitting coil and at least two receiving coils are wound in the plane of the cross section of the pipe.
Кроме того, в частном случае реализации изобретения, по меньшей мере, одна передающая катушка и, по меньшей мере, две приемные катушки имееют одинаковый внешний диаметр.In addition, in the particular case of the invention, at least one transmitting coil and at least two receiving coils have the same outer diameter.
Кроме того, в частном случае реализации изобретения устройство дополнительно содержит коммутатор.In addition, in the particular case of the invention, the device further comprises a switch.
Кроме того, в частном случае реализации изобретения, по меньшей мере, одна передающая катушка и, по меньшей мере, две приемные катушки расположены на одной оси, совпадающей с осью измеряемой трубы.In addition, in the particular case of the invention, at least one transmitting coil and at least two receiving coils are located on the same axis that coincides with the axis of the measured pipe.
При проведении поиска по патентной и научно-технической информации не было обнаружено решений, содержащих всей совокупности
предлагаемых признаков, что позволяет сделать вывод о соответствии заявляемого устройства критерию «нoвизнa».When conducting a search on patent and scientific and technical information, no solutions were found that contained the totality the proposed features, which allows us to conclude that the claimed device meets the criterion of "novelty."
Сведения, подтверждающие возможность осуществления изобретенияInformation confirming the possibility of carrying out the invention
Фиг.l- принципиальная схема устройства для измерения внутреннего диаметра труб.Fig.l is a schematic diagram of a device for measuring the inner diameter of pipes.
Устройство для измерения внутреннего диаметра труб (фиг.l) включает в себя источник T (I) возбуждающих колебания, по меньшей мере, две кольцевые передающие катушки Ll (3), L2 (4), по меньшей мере, две кольцевые приемные катушки LЗ (5), L4 (6), средство регистрации и измерения сигналов R (7), переключатель К (2), осуществляющий соединение источника T с одной из передающих катушек. Катушки Ll, L2, LЗ, L4, расположены на одной оси, совпадающей с осью измеряемой трубы и имеют одинаковый внешний диаметр.A device for measuring the inner diameter of the pipes (Fig. 1) includes a source T (I) of exciting oscillations, at least two ring transmitting coils Ll (3), L2 (4), at least two ring receiving coils L3 ( 5), L4 (6), a means for recording and measuring signals R (7), a switch K (2), which connects the source T to one of the transmitting coils. Coils Ll, L2, L3, L4, are located on the same axis, coinciding with the axis of the measured pipe and have the same outer diameter.
Работа устройства осуществляется следующим образом.The operation of the device is as follows.
Источник Г (l)вoзбyждaющиx колебаний формирует сигнал, состоящий из гармонических колебаний с частотами Fl, F2 (для определенности полагаем, что F2 больше, чем Fl). С помощью переключателя К (2) источник T (I) соединяется с одной из двух передающих катушек Ll (3), L2 (4) в зависимости от выбранного поддиапозаона измеряемых диаметров. Средство регистрации и измерения сигналов R (7) осуществляет выделение компонент ЭДС с частотами Fl, F2 на зажимах приемных катушках LЗ (5) , L4 (6) и измерение их амплитуд. Таким образом получаются четыре значения ЭДС - U31, U32, U41, U42 для каждого поддиапозона, где первый индекс обозначает катушку, в второй- частоту.
Искомый внутренний диаметр (ID) трубы определяется по формуле и расчитанным заранее однозначными зависимостями для каждого поддиапозона диметров:The source Г (l) of excitatory oscillations forms a signal consisting of harmonic oscillations with frequencies Fl, F2 (for definiteness, we assume that F2 is greater than Fl). Using the switch K (2), the source T (I) is connected to one of the two transmitting coils Ll (3), L2 (4) depending on the selected sub-range of measured diameters. The means for recording and measuring signals R (7) selects the EMF components with frequencies Fl, F2 at the terminals of the receiving coils LЗ (5), L4 (6) and measures their amplitudes. Thus, four EMF values are obtained - U31, U32, U41, U42 for each subrange, where the first index denotes a coil, and in the second, frequency. The required inner diameter (ID) of the pipe is determined by the formula and unambiguous dependencies calculated in advance for each subrange of the dimeters:
С/32 С/31C / 32 C / 31
S= n ln С/42 - m lп С/41 (1) где п и т -постоянные коэффициенты которые расчитываются исходя из заданного интервала измеряемых диаметров и разбивки его на поддиапозоны, максимального диаметра катушек, интервалов возможных изменений магнитной проницаемости и проводимости, максимального смешения оси инструмента относительно оси трубы, максимальной проводимости жидкости, заполняющей трубу, максимальной погрешности определения внутреннего диаметра, рабочих частот.S = n ln С / 42 - m lп С / 41 (1) where n and t are constant coefficients that are calculated based on a given interval of measured diameters and its breakdown into sub-ranges, maximum diameter of coils, intervals of possible changes in magnetic permeability and conductivity, maximum mixing the axis of the tool relative to the axis of the pipe, the maximum conductivity of the liquid filling the pipe, the maximum error in determining the inner diameter, operating frequencies.
Таким образом, определение ID производится по известному значению S- вспомогательной величины, связанной установленными расчетными соотношениями с внутренним диаметром трубы. Ошибка такого определения за счет влияния параметров материала трубы, заполняющего трубу рассола и возможного отклонения оси катушек от оси трубы минимизирована выбором коэффициентов п и т для каждого поддиапозона измеряемых диаметров.Thus, the determination of ID is made according to the known value of the S-auxiliary value associated with the established design relationships with the inner diameter of the pipe. The error of this determination due to the influence of the parameters of the material of the pipe filling the brine pipe and the possible deviation of the axis of the coils from the axis of the pipe is minimized by the selection of the coefficients p and t for each subrange of measured diameters.
Предложение соответствует критерию промышленная применимость)), поскольку, его осуществление возможно при использовании существующих средств производства с применением известных технологий.The proposal meets the criterion of industrial applicability)), because its implementation is possible using existing means of production using known technologies.
ЗАМЕНЯЮЩИЙ ЛИСТ (ПРАВИЛО 26)
SUBSTITUTE SHEET (RULE 26)
Claims
1. Устройство для определения внутреннего диаметра трубы, содержащее средство приема сигнала, средство передачи сигнала, источник возбуждающих колебаний и средство регистрации и обработки сигналов, отличающееся тем, что средство передачи сигнала выполнено в виде, по меньшей мере, одной передающей катушки, а средство приема сигнала выполнено в виде, по меньшей мере, двух приемных катушек, причем измерения проводятся на двух фиксированных частотах, а для определения внутреннего диаметра трубы используют только амплитудные значения ЭДС в , по меньшей мере, двух приемных катушках.1. A device for determining the inner diameter of the pipe, containing means for receiving a signal, means for transmitting a signal, a source of exciting oscillations and means for recording and processing signals, characterized in that the means for transmitting a signal is made in the form of at least one transmitting coil, and the receiving means the signal is made in the form of at least two receiving coils, and the measurements are carried out at two fixed frequencies, and only the amplitude values of the EMF in are used to determine the inner diameter of the pipe, at least two receiving coils.
2. Устройство по п.l, отличающееся тем, что витки, по меньшей мере, одной передающей катушки и, по меньшей мере, двух приемных катушек, намотаны в плоскости поперечного сечения трубы.2. The device according to claim 1, characterized in that the turns of at least one transmitting coil and at least two receiving coils are wound in the plane of the cross section of the pipe.
3. Устройство по п.l, отличающееся тем, что, по меньшей мере, одна передающая катушка и, по меньшей мере, две приемные катушки имееют одинаковый внешний диаметр.3. The device according to p. 1, characterized in that at least one transmitting coil and at least two receiving coils have the same outer diameter.
4. Устройство по п.l, отличающееся тем, что дополнительно содержит переключатель.4. The device according to claim 1, characterized in that it further comprises a switch.
5. Устройство по п.l, отличающееся тем, что, по меньшей мере, одна передающая катушка и, по меньшей мере, две приемные катушки расположены на одной оси, совпадающей с осью измеряемой трубы. 5. The device according to p. 1, characterized in that at least one transmitting coil and at least two receiving coils are located on one axis that coincides with the axis of the measured pipe.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2007148844/28A RU2364833C1 (en) | 2007-12-29 | 2007-12-29 | Device for determination of pipe internal diametre |
| RU2007148844 | 2007-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009091290A1 true WO2009091290A1 (en) | 2009-07-23 |
Family
ID=40885509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/RU2008/000808 WO2009091290A1 (en) | 2007-12-29 | 2008-12-29 | Device for measuring the inside diameter of a pipe |
Country Status (2)
| Country | Link |
|---|---|
| RU (1) | RU2364833C1 (en) |
| WO (1) | WO2009091290A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500578A (en) * | 2016-11-24 | 2017-03-15 | 联塑市政管道（河北）有限公司 | Blockage detector and its detection method inside a kind of tubing |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2650605C1 (en) * | 2017-03-17 | 2018-04-16 | Федеральное государственное бюджетное учреждение науки Институт проблем управления им. В.А. Трапезникова Российской академии наук | Method for measuring internal diameter of metal pipe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU146957A1 (en) * | 1961-04-22 | 1961-11-30 | В.Г. Герасимов | Device for contactless simultaneous and independent control of the diameter and average wall thickness of non-ferromagnetic pipes |
| SU938124A1 (en) * | 1980-11-24 | 1982-06-23 | Институт Прикладной Физики Ан Бсср | Electromagnetic device for checking inner diameter of ferromagnetic pipes |
| US4546314A (en) * | 1982-12-13 | 1985-10-08 | Schlumberger Technology Corp. | Method and apparatus for measuring the inside diameter of a metallic pipe in a well |
| US4546315A (en) * | 1982-12-13 | 1985-10-08 | Schlumberger Technology Corporation | Apparatus for measuring the inside diameter of a metallic pipe in a well |
-
2007
- 2007-12-29 RU RU2007148844/28A patent/RU2364833C1/en not_active IP Right Cessation
-
2008
- 2008-12-29 WO PCT/RU2008/000808 patent/WO2009091290A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU146957A1 (en) * | 1961-04-22 | 1961-11-30 | В.Г. Герасимов | Device for contactless simultaneous and independent control of the diameter and average wall thickness of non-ferromagnetic pipes |
| SU938124A1 (en) * | 1980-11-24 | 1982-06-23 | Институт Прикладной Физики Ан Бсср | Electromagnetic device for checking inner diameter of ferromagnetic pipes |
| US4546314A (en) * | 1982-12-13 | 1985-10-08 | Schlumberger Technology Corp. | Method and apparatus for measuring the inside diameter of a metallic pipe in a well |
| US4546315A (en) * | 1982-12-13 | 1985-10-08 | Schlumberger Technology Corporation | Apparatus for measuring the inside diameter of a metallic pipe in a well |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500578A (en) * | 2016-11-24 | 2017-03-15 | 联塑市政管道（河北）有限公司 | Blockage detector and its detection method inside a kind of tubing |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2364833C1 (en) | 2009-08-20 |
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