CN2373565Y - Diplog instrument without auxiliary gain - Google Patents
Diplog instrument without auxiliary gain Download PDFInfo
- Publication number
- CN2373565Y CN2373565Y CN 99223250 CN99223250U CN2373565Y CN 2373565 Y CN2373565 Y CN 2373565Y CN 99223250 CN99223250 CN 99223250 CN 99223250 U CN99223250 U CN 99223250U CN 2373565 Y CN2373565 Y CN 2373565Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- instrument
- resistance
- electrode drive
- operational amplifier
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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- Measurement Of Resistance Or Impedance (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The utility model relates to a diplog instrument without auxiliary gain, which is used for petroleum exploration. The diplog instrument is composed of a circuit board, an instrument frame and a shell, wherein, the circuit part comprises an oscillating circuit, an analog switch circuit, a guard electrode drive circuit, a main electrode drive circuit, an amplifying circuit and a filtering rectification circuit. The utility model has the advantages of low cost and convenient operation, which can be used for successfully measuring the conductivity log presentation when the stratum resistivity is larger than 500 omega M to satisfy the actual demand for production. The practical measurement range is from 1 omega M to 2300 omega M.
Description
The utility model relates to a kind of geologic logging instrument that is used for oil exploration: not with the dipmeter tool of assist gain.
In the oil exploration process, need utilize dipmeter tool to measure, so that tendency, inclination angle and the formation fracture situation of institute's exploratory area stratigraphic structure judged.At present, on-the-spot adopt usually not with 1016 dipmeter tools of assist gain in measured resistivity during greater than the stratum of 500 Ω m, the formation conductivity curve that records is flat-head shape, and for such as the such stratum of buried hill, the most of 500 Ω m that surpass of its resistivity, the above electrical conductivity curve tack of 10m can appear in its log.Such log is underproof.In this case, the ground that must adopt microresistivity scanning imagery instrument or band to gain is led the dipmeter logging instrument and logged well, but its cost is too high, and is consuming time more, and the influence all information of surveying.
The purpose of this utility model be to provide a kind of easy to use, the scope of application big, can successfully measure modified that resistivity surpasses 500 Ω m stratigraphic dip data not with the dipmeter tool of assist gain.
The utility model is to realize like this.This kind logging instrument is made up of circuit board, instrument skeleton and housing.The circuit board that comprises 6 circuit depends on and is arranged on the instrument skeleton that is long square plate shape, and single unit system is connected with cable by aviation plug again and is connected with ground system in the long cylindrical shell of 3m.Its circuit part comprises oscillating circuit, analog switching circuit, bucking electrode drive circuit, main electrode drive circuit, amplifying circuit and six circuit of filter rectifier.Wherein, operational amplifier IC
1With resistance R
1-R
7, capacitor C
3, C
4, C
5, voltage-stabiliser tube D
1The oscillating circuit of component frequency 270Hz; Analog switch IC
9, peripheral divider resistance R
8-R
15, the gain code A that sends here by computer
0, A
1, A
2Form analog switching circuit; Operational amplifier IC
2, power amplifier IC
3, step-down transformer T
1, capacitor C
8, resistance R
16, bucking electrode forms the bucking electrode drive circuit; Operational amplifier IC
4, power amplifier IC
5, main electrode forms the main electrode drive circuit; Operational amplifier IC
7, IC
8, diode D
2, D
3, resistance R
23-R
36, capacitor C
1, C
2, C
6, C
7, C
9, C
12, C
13Form filter rectifier (comprising bandpass filtering, rectification and three circuit of LPF).Its course of work is as follows: the signal of oscillating circuit output is by resistance R
6, R
7Deliver to analog switch IC after the dividing potential drop
9, IC
9With peripheral divider resistance R
8-R
15The oscillating circuit output voltage is decayed, and the decay size is by gain code A
0, A
1, A
2Control; The analog switch output signal is delivered to amplifier IC
2, pass through power discharging IC again
3Deliver to transformer T
1, couple a signal on the bucking electrode IC
3, IC
2, T
1Form quick follow-up amplifier, keep the bucking electrode supply voltage constant in the well logging process; Receive amplifier IC by the reference signal that bucking electrode is sent here
4In-phase end, through power discharging IC
5Deliver to main electrode, IC
4, IC
5Also form quick follow-up amplifier, keep main electrode and bucking electrode supply voltage constant and equal during well logging, the conductivity signal that is directly proportional with formation currents is by sampling resistor R
17Detect, through transformer T
2Deliver to amplifier IC
6Amplify; Amplified signal is delivered to amplifier IC
7, IC
7With resistance R
23, R
25, capacitor C
1, C
2Form 270H
zBandwidth-limited circuit is to 270H
zSignal carries out filtering, allows conductivity signal pass through; Process is by amplifier IC
8-B and resistance R
26-R
29, diode D
2, D
3The rectification circuit of forming and by amplifier IC
8-D, IC
8-C and resistance R
34, R
35, capacitor C
6, C
7, C
12, C
13The two-stage low-pass filter circuit of forming, conductivity signal become direct current signal output; Keep through sampling hold circuit, analog-digital converter converts the binary digit amount to, delivers to Manchester's code/decoder and weaves into the Manchester code form, delivers to 3700 ground instrument and handles, and becomes the conductivity logging curve and shows on plotter.
The utility model cost of manufacture is lower, and is easy to use, and the scope of application is big, and actual measurement range is 1-2300 Ω m, utilizes it can successfully measure the conductivity logging curve of resistivity greater than 500 Ω m stratum, satisfies and produces actual needs.
Accompanying drawing is circuit theory diagrams of the present utility model.
Below in conjunction with accompanying drawing enforcement of the present utility model is described further.
As shown in the figure, circuit part of the present utility model is made up of oscillating circuit, analog switching circuit, bucking electrode drive circuit, main electrode drive circuit, amplifying circuit and six circuit of filter rectifier, and wherein the specifications and models of each electronic component of Cai Yonging are as follows:
Operational amplifier IC
1, IC
7The OP27A type, IC
2, IC
4The HA2-2620 type, IC
6The AD521 type, IC
8The HA1-4600 type; Power amplifier IC
3, IC
5823 types; Analog switch IC
9HI
1-50813 types; Resistance R
140.2K Ω, R
2866 Ω, R
3, R
21100K Ω, R
4, R
26, R
27, R
2910K Ω, R
515K Ω, R
6, R
30, R
314.99K Ω, R
7, R
13, R
191K Ω, R
832K Ω, R
916K Ω, R
107.96K Ω, R
14.02K Ω, R
122K Ω, R
14, R
15499 Ω, R
161M Ω, R
1710 Ω, R
189K Ω, R
20475K Ω, R
221.24K Ω, R
231.58K Ω, R
2549.9K Ω, R
28, R
3220K Ω, R
33-R
3614K Ω; Capacitor C
1, C
20.1nPF, C
3, C
40.1 μ F, C
51 μ F, C
82 μ F, C
6, C
130.5PF, C
7, C
9, C
121.0PF; Diode D
11V LVA51A type Zener diode,
D
2, D
3Commutation diode; Transformer T
110: 1 step-down transformers,
T
21: 50 step-up transformer.
Claims (1)
1, a kind of not with the dipmeter tool of assist gain, form by circuit board, instrument skeleton and housing, it is characterized in that, circuit part comprises oscillating circuit, analog switching circuit, bucking electrode drive circuit, main electrode drive circuit, amplifying circuit and six circuit of filter rectification, and wherein: oscillating circuit is by operational amplifier IC
1, resistance R
1-R
7, capacitor C
3-C
5, Zener diode D
1Form; Analog switching circuit is by analog switch IC
9, resistance R
8-R
15, the gain code A that sends here by computer
0, A
1, A
2Form; The bucking electrode drive circuit is by operational amplifier IC
2, power amplifier IC
3, step-down transformer T
1, capacitor C
8, resistance R
16, bucking electrode forms; The main electrode drive circuit is by operational amplifier IC
4, power amplifier IC
5, main electrode forms; Amplifying circuit is by operational amplifier IC
6, step-up transformer T
2, resistance R
17-R
22Form; Filter rectifier is by operational amplifier IC
7, IC
8, commutation diode D
2, D
3, resistance R
23-R
36, capacitor C
1, C
2, C
6, C
7, C
9, C
12, C
13Form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99223250 CN2373565Y (en) | 1999-03-25 | 1999-03-25 | Diplog instrument without auxiliary gain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99223250 CN2373565Y (en) | 1999-03-25 | 1999-03-25 | Diplog instrument without auxiliary gain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2373565Y true CN2373565Y (en) | 2000-04-12 |
Family
ID=34013493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99223250 Expired - Fee Related CN2373565Y (en) | 1999-03-25 | 1999-03-25 | Diplog instrument without auxiliary gain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2373565Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794738A (en) * | 2020-07-07 | 2020-10-20 | 中国石油天然气集团有限公司 | Method for jointly inverting stratum inclination angle based on array induction and anisotropy |
-
1999
- 1999-03-25 CN CN 99223250 patent/CN2373565Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794738A (en) * | 2020-07-07 | 2020-10-20 | 中国石油天然气集团有限公司 | Method for jointly inverting stratum inclination angle based on array induction and anisotropy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |