SU363002A1 - DEVICE FOR REGISTRATION OF THE GRADIENT OF THE TEMPERATURE IN THE WELL - Google Patents

DEVICE FOR REGISTRATION OF THE GRADIENT OF THE TEMPERATURE IN THE WELL

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Publication number
SU363002A1
SU363002A1 SU1631971A SU1631971A SU363002A1 SU 363002 A1 SU363002 A1 SU 363002A1 SU 1631971 A SU1631971 A SU 1631971A SU 1631971 A SU1631971 A SU 1631971A SU 363002 A1 SU363002 A1 SU 363002A1
Authority
SU
USSR - Soviet Union
Prior art keywords
well
block
temperature
registration
gradient
Prior art date
Application number
SU1631971A
Other languages
Russian (ru)
Inventor
изобретени Авторы
Original Assignee
Ю. А. Воробьев , О. В. Руднев Государственный геофизический трест Азнефтегеофизика
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ю. А. Воробьев , О. В. Руднев Государственный геофизический трест Азнефтегеофизика filed Critical Ю. А. Воробьев , О. В. Руднев Государственный геофизический трест Азнефтегеофизика
Priority to SU1631971A priority Critical patent/SU363002A1/en
Application granted granted Critical
Publication of SU363002A1 publication Critical patent/SU363002A1/en

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Description

ИзобретеНИе относитс  к устройствам дл  измерени  тем1пе;ратуры, в частности к устройствам дл  термических исследований нефт -у .ых, газовых и других скважин.The invention relates to devices for measuring the temperature, especially to devices for thermal research of oil, gas and other wells.

Известны устройства дл  (регистрации градиента температуры в скважине, содержащие соединенные кабелем скважинный блок, в котором расположены два те рМОрезистора, укреплетаные на фиксиро-ванном рассто нии друг от друта вдоль оси скважины и включенные IB мостовую схему, источник питани , усилитель сигнала разбаланса .моста и .наземный блок, в которОМ раслоложены усилитель, детектор и р егистр и ру ю щ и и б Oip.There are known devices for (registering a temperature gradient in a well, containing a cable-connected well block, in which two thermal resistors are housed, fixed at a fixed distance from each other along the axis of the well, and included an IB bridge circuit, a power source, a bridge imbalance signal amplifier and the ground block, in which the amplifier, detector, and the registrar, and the control unit of the Oip are located.

Однако такие устройства сл-ожНы « -не обеспечивают требуемой точности регистрации.However, such devices do not provide the required accuracy of registration.

В лредлатаемом устройстве, с целью его упрощени  и повышени  точности, источник питани  tMccra выпол-нен в виде генератора несимметрнчного нац.р жени , детектор выполнен в виде двух .пиковых .вьшр мителей, подключенных к ларафазной обмотке ус 1лител  наземного блока, а регистрирующий прибОр включен между выходами указанных выпр мителей .In a prepaid device, in order to simplify it and increase its accuracy, the tMccra power supply is made as an unbalanced national generator, the detector is designed as two .pickers connected to the phase winding of the ground block of the ground block, and the recording device included between the outputs of these rectifiers.

На фиг. 1 дана схема предлагаемого устройства; «а фиг 2 - форма напр жени  на .выходе элементов схемы.FIG. 1 is a diagram of the proposed device; "And Fig. 2 is a form of voltage on the output of circuit elements.

Устройство содар..жит скважинный и наземный б.локи. Скважинный блок питаетс  от выпр мител  наземной апПа;ратуры / по кабелю 2. В этом блоке имеетс  два терморезистора 3 и 4. Один из терморезисторов расположен в головной части скеажинното блока, второй - в хвостовой. Терморезисторы 3 ц 4 вместе с резисторами 5 н 6 образуют мост, питаемый от генератора 7 несимметричного напр жени . К измерительной диагонали моста подключен В.ХО1Д усилител  5, выход которого подключен к кабелю 2. В назе(М«0М блоке сигнал выдел етс  на резисторе 9, включенном последовательно с цепью питани , и подаетс  на усилитель 10 с трансформаторным выходом.The device sodar .. lives well and ground b.lok. The downhole block is powered by a ground app rectifier; cable / cable 2. In this block there are two thermistors 3 and 4. One of the thermistors is located in the head section of the secondary block, the second in the tail block. Thermistors 3 q 4 together with resistors 5 n 6 form a bridge, fed from an asymmetric voltage generator 7. To the measuring diagonal of the bridge, V.HOD amplifier 5 is connected, the output of which is connected to cable 2. In the M (0M block, the signal is extracted at a resistor 9 connected in series with the power supply and is fed to the amplifier 10 with a transformer output.

К одной половине парафазной вторичнойTo one half paraphase secondary

обмотки трансформатора // подключен первый пиковый выпр митель (диод J2 с нагрузкой 13 и .накопительной емкостью 14), ко второй полов.ине обмотки подключен .второй пиковый выпр митель (диод /5 с нагрузкой 16 и накопительной емкостью /7). Регистр.ирующий прибор /5 включен между выходалги укаaaiHHbix выпр м ителей.transformer // winding is connected to the first peak rectifier (diode J2 with load 13 and storage capacitance 14), to the second half of the winding a second peak rectifier is connected (diode / 5 with load 16 and accumulative capacitance / 7). The registering device / 5 is connected between the receivers and the aaiHHbix rectifier.

Мост сбалансирован таким образом, что .при равенстве температур терморезисторов 3 и 4 разность потенциалов в диагонали моста, подаваема  на вход усилител  8, равна нулю. Очевидно, что регистрируемый в наземной аппаратуре с.игна.л При этом равен нулю.The bridge is balanced in such a way that when the temperatures of thermistors 3 and 4 are equal, the potential difference in the diagonal of the bridge, fed to the input of the amplifier 8, is zero. It is obvious that the signal registered in the ground equipment is zero at the same time.

При разбалансе моста на .вход усилител  When the unbalance of the bridge on the input amplifier

гюдаетс  разность потенциалов, пропорциоThe potential difference is proportional to

SU1631971A 1971-03-16 1971-03-16 DEVICE FOR REGISTRATION OF THE GRADIENT OF THE TEMPERATURE IN THE WELL SU363002A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1631971A SU363002A1 (en) 1971-03-16 1971-03-16 DEVICE FOR REGISTRATION OF THE GRADIENT OF THE TEMPERATURE IN THE WELL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1631971A SU363002A1 (en) 1971-03-16 1971-03-16 DEVICE FOR REGISTRATION OF THE GRADIENT OF THE TEMPERATURE IN THE WELL

Publications (1)

Publication Number Publication Date
SU363002A1 true SU363002A1 (en) 1972-12-30

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Application Number Title Priority Date Filing Date
SU1631971A SU363002A1 (en) 1971-03-16 1971-03-16 DEVICE FOR REGISTRATION OF THE GRADIENT OF THE TEMPERATURE IN THE WELL

Country Status (1)

Country Link
SU (1) SU363002A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8122951B2 (en) 2005-02-28 2012-02-28 Schlumberger Technology Corporation Systems and methods of downhole thermal property measurement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8122951B2 (en) 2005-02-28 2012-02-28 Schlumberger Technology Corporation Systems and methods of downhole thermal property measurement

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