SU438964A1 - Sensor for downhole tool - Google Patents
Sensor for downhole toolInfo
- Publication number
- SU438964A1 SU438964A1 SU1829434A SU1829434A SU438964A1 SU 438964 A1 SU438964 A1 SU 438964A1 SU 1829434 A SU1829434 A SU 1829434A SU 1829434 A SU1829434 A SU 1829434A SU 438964 A1 SU438964 A1 SU 438964A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- sensor
- downhole tool
- electrodes
- housing
- channels
- Prior art date
Links
Landscapes
- Geophysics And Detection Of Objects (AREA)
Description
1one
Изобретение относитс к оборудованию дл исследовани свойств горных пород, а именно к датчикам скважинного прибора дл диэлектрического каротажа.The invention relates to equipment for investigating rock properties, namely, sensors for a downhole tool for dielectric logging.
Известны датчики скважинного прибора дл диэлектрического каротажа, содержащие последовательно установленные в корпусе цилиндрические электроды.Known sensors of a downhole tool for dielectric logging, containing successively installed in the housing cylindrical electrodes.
Однако такие датчики не обеспечивают необходимой точности измерений.However, such sensors do not provide the necessary measurement accuracy.
В предлагаемом датчике дл повышени точности измерений электроды выполнены разрезными и закреплены на эластичной оболочке , охватывающей корпус, в котором имеютс каналы дл подвода под нее сжатого воздуха.In the proposed sensor, in order to increase the accuracy of measurements, the electrodes are made split and fixed on an elastic shell covering the case in which there are channels for supplying compressed air under it.
На чертеже схематически изображен предлагаемый датчик.The drawing schematically shows the proposed sensor.
В корпусе 1 датчика скважинного прибора, выполненном из тефлона, размещены цилиндрические электроды 2 из красной меди.In case 1 of the sensor of the downhole tool, made of Teflon, cylindrical electrodes 2 made of red copper are placed.
Электроды выполнены разрезными и закреплены на эластичной (резиновой) оболочке 3, охватывающей корпус 1.The electrodes are made split and fixed on the elastic (rubber) shell 3, covering the housing 1.
При исследовании горных пород корпус 1 опускаетс в скважину на необходимую глубину . По шлангу, соединенному со штуцером 4 корпуса 1, подаетс сжатый воздух. Он поступает по каналам 5 и 6 под оболочку 3 и раздувает ее. В результате этого пластины 7, на которые разрезаны электроды 2, раздвигаютс и плотно прижимаютс к стенкам скважины .When studying rocks, the body 1 is lowered into the well to the required depth. A hose connected to the nozzle 4 of the housing 1 is supplied with compressed air. It enters through channels 5 and 6 under the shell 3 and inflates it. As a result, the plates 7, into which the electrodes 2 are cut, are moved apart and tightly pressed against the walls of the well.
Датчик включен в один из двух контуров, с которыми слабо св зан через щлейфы генератор высокой частоты. Поэтому изменение емкости датчика в зависимости от вида исследуемой горной породы, зафиксированное стрелочным или самопишущим прибором, позвол ет судить о характеристиках исследуемого объекта.The sensor is included in one of the two circuits with which the high-frequency generator is weakly connected through plugs. Therefore, a change in the sensor capacitance depending on the type of rock under investigation, recorded by a switch or recorder, makes it possible to judge the characteristics of the object under study.
Предлагаемый датчик позвол ет упростить процесс измерений, ускорить его и повысить стабильность результатов.The proposed sensor allows to simplify the measurement process, speed it up and increase the stability of the results.
Предмет изобретени Subject invention
Датчик скважинного прибора дл диэлектрического каротажа, содерл ащий последовательно установленные в корпусе цилиндрические электроды, отличающийс тем, что, с целью повышени точности измерений, в нем электроды выполнены разрезными и закреплены на эластичной оболочке, охватывающей корпус, в котором имеютс каналы дл подвода под нее сжатого воздуха.A sensor for a dielectric logging tool, containing cylindrical electrodes sequentially installed in a housing, characterized in that, in order to improve measurement accuracy, the electrodes are split and fixed on an elastic shell covering the housing, in which there are channels for supplying compressed of air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1829434A SU438964A1 (en) | 1972-09-20 | 1972-09-20 | Sensor for downhole tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1829434A SU438964A1 (en) | 1972-09-20 | 1972-09-20 | Sensor for downhole tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU438964A1 true SU438964A1 (en) | 1974-08-05 |
Family
ID=20527302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1829434A SU438964A1 (en) | 1972-09-20 | 1972-09-20 | Sensor for downhole tool |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU438964A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002054111A1 (en) * | 2001-01-05 | 2002-07-11 | Well Logging Company Of Xinjiang Petroleum Administration Bureau | Capacitance well logging method and a series of complex resistivity well logging apparatus |
| WO2003076968A1 (en) * | 2002-03-04 | 2003-09-18 | Baker Hughes Incorporated | An apparatus and method for wellbore resistivity determination and imaging using capacitive coupling |
| EP1390712A1 (en) * | 2001-04-18 | 2004-02-25 | Baker Hughes Incorporated | An apparatus and method for wellbore resistivity determination and imaging using capacitive coupling |
-
1972
- 1972-09-20 SU SU1829434A patent/SU438964A1/en active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002054111A1 (en) * | 2001-01-05 | 2002-07-11 | Well Logging Company Of Xinjiang Petroleum Administration Bureau | Capacitance well logging method and a series of complex resistivity well logging apparatus |
| EP1390712A1 (en) * | 2001-04-18 | 2004-02-25 | Baker Hughes Incorporated | An apparatus and method for wellbore resistivity determination and imaging using capacitive coupling |
| EP1390712A4 (en) * | 2001-04-18 | 2009-07-08 | Baker Hughes Inc | An apparatus and method for wellbore resistivity determination and imaging using capacitive coupling |
| WO2003076968A1 (en) * | 2002-03-04 | 2003-09-18 | Baker Hughes Incorporated | An apparatus and method for wellbore resistivity determination and imaging using capacitive coupling |
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