CN104141489B - The equipment of a kind of measured resistivity and method - Google Patents
The equipment of a kind of measured resistivity and method Download PDFInfo
- Publication number
- CN104141489B CN104141489B CN201310172677.9A CN201310172677A CN104141489B CN 104141489 B CN104141489 B CN 104141489B CN 201310172677 A CN201310172677 A CN 201310172677A CN 104141489 B CN104141489 B CN 104141489B
- Authority
- CN
- China
- Prior art keywords
- electrode
- measured
- signal
- modular converter
- dsp chip
- 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.)
- Active
Links
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses a kind of equipment and the method for measured resistivity, belong to oil well logging field.This equipment includes: electrode, middle part measurement electrode, bottom measurement electrode, default value piston, advance data collecting unit and bottom electrode are measured in electronics unit, top electrodes, hydraulic means, hydraulic fluid chamber, reference electrode, top；Electronics unit is connected with one end of top electrodes, the other end of top electrodes is connected with one end of hydraulic means, the other end of hydraulic means is connected with one end of hydraulic fluid chamber, the other end of hydraulic fluid chamber is connected with one end of advance data collecting unit, the other end of advance data collecting unit is connected with bottom electrode, hydraulic fluid chamber is hollow-core construction, and on hydraulic fluid chamber, have default value hole, default value piston is separately mounted on default value the hole of hydraulic fluid chamber, reference electrode, electrode is measured on top, electrode is measured at middle part and bottom is measured electrode and is separately mounted on piston.The present invention makes electrode contact well with sleeve pipe.
Description
Technical field
The present invention relates to oil well logging field, particularly to equipment and the method for a kind of measured resistivity.
Background technology
In oilfield development process, the stratum being provided with around the oil well of metal canula is carried out resistivity measurement, according to
The resistivity recorded obtains the oil saturation of this earth layer around oil well remaining oil；Oil-containing according to this oil well remaining oil is saturated
Degree, optimizes oil mining scheme, can improve the recovery ratio in oil extraction in oil field exploitation.
Presently, there are the equipment of a kind of measured resistivity, be fitted with as shown in Figure 1 in the oil well eyelet 2 of metal canula 1, should
Equipment includes: downhole instrument 3, cable 4 and data acquisition and processing means 5, and one end of cable 4 connects data acquisition and procession device
5, the other end connects downhole instrument 3, measures the resistivity of Different Strata around this oil well by downhole instrument 3.Wherein, downhole instrument 3 wraps
Include: first electrode the 31, second electrode the 32, the 3rd electrode the 33, the 4th electrode 34, top electrodes 35,36, four groups of arms of bottom electrode
Bar, insulated connectors 38 and central shaft 39.Often group armed lever includes 2 armed levers, pacifies between top electrodes 35 and first group of armed lever 371
Equipped with insulated connectors 38, four groups of armed levers are uniformly distributed on center shaft, and are provided with the first electrode on first group of armed lever 371
31, second group of armed lever 372 is provided with the second electrode 32, the 3rd group of armed lever 373 is provided with the 3rd electrode 33, the 4th group of armed lever
4th electrode 34 is installed on 374.When measuring the resistivity of earth layer around oil well, in order to make electrode with internal surface of sleeve pipe preferably
Contact, first staff carries out well-flushing paraffin cutting to this oil well, and then downhole instrument 3 expands armed lever, makes to be arranged on first group of armed lever
The first electrode 31 on 371, the second electrode 32 being arranged on second group of armed lever 372, be arranged on the 3rd group of armed lever 373
It is contacted with on the inwall of sleeve pipe 1, by the first electricity to three electrodes 33 and the 4th electrode 34 backup that is arranged on the 4th group of armed lever 374
The signal of telecommunication measured on pole the 31, second electrode the 32, the 3rd electrode 33 and the 4th electrode 34 is amplified through amplifier, and transmits
To the data acquisition and procession device 5 on ground, this signal is processed by data acquisition and procession device 5, obtains this oil well week
The resistivity of exclosure layer.
During realizing the present invention, inventor finds that prior art at least there is problems in that
Owing to the backup power of electrode backup internal surface of sleeve pipe is less, it is unreliable that electrode contacts with internal surface of sleeve pipe, and is measuring
Before electrical resistivity of earth layer around oil well, staff needs well-flushing paraffin cutting, and operating process is complicated.
Summary of the invention
In order to solve problem of the prior art, embodiments provide a kind of equipment and the method for measured resistivity.
Described technical scheme is as follows:
On the one hand, it is provided that the equipment of a kind of measured resistivity, described equipment includes: electronics unit, top electrodes, liquid
Pressure device, hydraulic fluid chamber, reference electrode, top measurement electrode, middle part measurement electrode, bottom measurement electrode, default value are lived
Plug, advance data collecting unit and bottom electrode；
Described electronics unit is connected with one end of described top electrodes, the other end of described top electrodes and described hydraulic pressure
One end of device connects, and the other end of described hydraulic means is connected with one end of described hydraulic fluid chamber, described hydraulic fluid chamber another
One end is connected with one end of described advance data collecting unit, the other end of described advance data collecting unit and described bottom electricity
Pole connects, and described hydraulic fluid chamber is to have default value hole in hollow-core construction, and described hydraulic fluid chamber, described default value
Piston is separately mounted on default value the hole of described hydraulic fluid chamber, and electrode, described is measured on described reference electrode, described top
Electrode is measured at middle part and described bottom is measured electrode and is separately mounted on described piston.
Wherein, described electronics unit includes: the first Acquisition Circuit, the second Acquisition Circuit, the first Digital Signal Processing DSP
Chip, the second dsp chip, the first controller area network interface, the second CAN interface and crystal oscillator；
Described first Acquisition Circuit is connected with described first dsp chip, and described first dsp chip connects with a described CAN
Mouth connects, and described second Acquisition Circuit is connected with described second dsp chip, described second dsp chip and described second CAN interface
Connecting, described crystal oscillator is connected respectively with described first dsp chip and described second dsp chip.
Wherein, described first Acquisition Circuit includes: the first Isolation Amplifier Module, the second Isolation Amplifier Module, first simulation/
Numeral A/D modular converter, the 2nd A/D modular converter, an A/D isolation module；
Described first Isolation Amplifier Module is connected with a described A/D modular converter, described second Isolation Amplifier Module with
Described 2nd A/D modular converter connects, a described A/D isolation module and a described A/D modular converter and described 2nd A/D
Modular converter connects respectively.
Wherein, described second Acquisition Circuit includes: Signal-regulated kinase and the 3rd A/D modular converter；
Described Signal-regulated kinase is connected with described 3rd A/D modular converter.
Further, described electronics unit also includes: temperature sensor and transmitting sample circuit；
Described temperature sensor is connected with described Signal-regulated kinase, and described transmitting sample circuit is put with described second isolation
Big module connects.
Wherein, described hydraulic means includes: pressure transducer, backup sensor, direct current generator, electromagnetic valve, spring and note
Plug pump；
Described pressure transducer and described backup sensor are connected with described Signal-regulated kinase respectively；
Described direct current generator is connected respectively with described electromagnetic valve and described piston pump, and described spring is with described piston pump even
Connect.
Wherein, described advance data collecting unit includes: the first differential amplification module, the second differential amplification module, the 4th
A/D modular converter, the 5th A/D modular converter, reference voltage module, the 2nd A/D isolation module, DC-DC DC/DC isolate electricity
Source, the 3rd dsp chip and the 3rd CAN interface；
Described first differential amplification module is connected with described 4th A/D modular converter, described second differential amplification module with
Described 5th A/D modular converter connects, and described reference voltage module turns with described 4th A/D modular converter and described 5th A/D
Die change block connects respectively, described 2nd A/D isolation module respectively with described 4th A/D modular converter, described 5th A/D modulus of conversion
Block and described 3rd dsp chip connect, described DC/DC insulating power supply and described 2nd A/D isolation module and described 3rd DSP core
Sheet connects respectively, and described 3rd dsp chip is connected with described 3rd CAN interface.
Further, described equipment also includes: remote unit；
Described remote unit at least includes common type system CTS interface, described CTS interface and described second dsp chip
Connect.
On the other hand, it is provided that a kind of method of measured resistivity, described method includes:
Control hydraulic means in hydraulic fluid chamber, inject hydraulic oil, make the piston being arranged on described hydraulic fluid chamber outwards divide
Open, electrode is measured on the reference electrode being arranged on described piston, top, middle part measure electrode and bottom measure electrode effect with
Internal surface of sleeve pipe；
Measure electrode according to described reference electrode, described top, electrode is measured at described middle part and electrode is measured in described bottom
The signal measured, calculates the resistivity of earth layer around oil well.
Wherein, electronics unit includes launching sample circuit；
Correspondingly, described according to described reference electrode, described top measure electrode, described middle part measure electrode and described under
The signal of electrode measurement is measured in portion, calculates the resistivity of earth layer around oil well, including:
The sampling of described transmitting sample circuit is obtained the first transmitting sampling current and electrode, described middle part are measured in described top
The signal electron instrument unit measuring electrode and described bottom measurement electrode measurement carries out digital detection process to the signal of input,
Signal is processed to first；
To described transmitting sample circuit sampling obtain second transmitting sampling current and described top measure electrode, described in
Portion measures the signal electron instrument unit of electrode and described bottom measurement electrode measurement and the signal of input is carried out digital detection process,
Obtain the second process signal；
Process signal and described second according to described first and process signal, calculate the resistivity of earth layer around oil well.
In embodiments of the present invention, control hydraulic means in hydraulic fluid chamber, inject hydraulic oil, hydraulic pressure in hydraulic fluid chamber
Under the dynamic action of oil, drive default value piston the most separately, the reference electrode being arranged on piston, top are surveyed
Amount electrode, middle part are measured electrode and bottom and are measured electrode and act on internal surface of sleeve pipe, according to reference electrode, top measure electrode, in
Electrode is measured in portion and the signal of telecommunication on stratum outside electrode measurement sleeve pipe is measured in bottom, calculates the resistivity of earth layer around oil well.Due to
The hydraulic coupling that hydraulic oil acts on internal surface of sleeve pipe is relatively big, makes electrode can contact well with internal surface of sleeve pipe, is not required to work before measurement
Well-flushing paraffin cutting is carried out as personnel, simple to operate.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in embodiment being described below required for make
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only some embodiments of the present invention, for
From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the device structure schematic diagram of a kind of measured resistivity that prior art provides；
Fig. 2 is the device structure schematic diagram of a kind of measured resistivity that the embodiment of the present invention one provides；
Fig. 3 is the electrical block diagram of the data acquisition and procession that the embodiment of the present invention one provides；
Fig. 4 is the method flow diagram of a kind of measured resistivity that the embodiment of the present invention two provides.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment one
Embodiments providing the equipment of a kind of measured resistivity, see Fig. 2, this equipment includes: electronics unit
2, electrode 7, middle part measurement electrode 8, bottom survey are measured in top electrodes 3, hydraulic means 4, hydraulic fluid chamber 5, reference electrode 6, top
Amount electrode 9, default value piston 10, advance data collecting unit 11 and bottom electrode 12；
Electronics unit 2 is connected with one end of top electrodes 3, and the other end of top electrodes 3 connects with one end of hydraulic means 4
Connecing, the other end of hydraulic means 4 is connected with one end of hydraulic fluid chamber 5, the other end of hydraulic fluid chamber 5 and advance data collecting unit
One end of 11 connects, and the other end of advance data collecting unit 11 is connected with bottom electrode 12, and hydraulic fluid chamber 5 is hollow-core construction,
And on hydraulic fluid chamber 5, having default value hole, default value piston 10 is separately mounted to the default value of this hydraulic fluid chamber 5
On individual hole, reference electrode 6, top measure electrode 7, electrode 8 is measured at middle part and bottom is measured electrode 9 and is separately mounted to piston 10
On.
Wherein, electronics unit 2 is for CAN(Controller Area Network controller area network) bus biography
Defeated information carries out Digital Signal Processing, and top electrodes 3 launches for the well logging of big electric current and scale is launched, and hydraulic means 4 is used for
Input hydraulic pressure oil or extract force feed in hydraulic fluid chamber 5, reference electrode 6 is for measuring the reference voltage letter of earth layer around oil well
Number, electrode 7 is measured on top, electrode 8 is measured at middle part and bottom is measured electrode 9 and is used for measuring the signal of telecommunication of sleeve pipe other places layer, preposition
Data acquisition unit 11 measures the signal of telecommunication on electrode 7, middle part measurement electrode 8 and bottom measurement electrode 9, the end for processing top
Portion's electrode 12 launches for the well logging of big electric current and scale is launched.
Wherein, when measuring electrical resistivity of earth layer around oil well, hydraulic oil is injected in hydraulic fluid chamber by hydraulic means 4,
Under the dynamic action of hydraulic oil, the piston 10 being arranged on hydraulic fluid chamber 5 is outwards separated, make the reference being arranged on piston 10
Electrode 6, top measure electrode 7, middle part is measured electrode 8 and contacted with internal surface of sleeve pipe with bottom measurement electrode 9, thus measures outside sleeve pipe
The signal of telecommunication on stratum；The signal of telecommunication that reference electrode 6 records is input to electronics unit, and electrode 7 is measured on top, electrode is measured at middle part
8 and bottom measure the signal of telecommunication that records of electrode 9 and be input to advance data collecting unit 11, advance data collecting unit 11 is to input
The signal of telecommunication process, and be input to electronics unit 2, the letter that advance data collecting unit 11 is inputted by electronics unit 2
Number and reference electrode 6 input the signal of telecommunication carry out Digital Signal Processing.
Wherein, include that four groups of pistons 10, piston 10 are one four layers metallic copper sleeve composite construction in the present embodiment, ginseng
Examining electrode 6 to be arranged on first group of piston, top is measured electrode 7 and is arranged on second group of piston, and middle part is measured electrode 8 and is arranged on
On 3rd group of piston, bottom is measured electrode 9 and is arranged on the 4th group of piston, and often group piston is positioned at the two of hydraulic fluid chamber 5 axis
Side is symmetrical, when injecting hydraulic oil in hydraulic fluid chamber 5, under the dynamic action of hydraulic oil, drives piston body the most reversely
Separately, electrode fixing on piston body acts on the hydraulic coupling of internal surface of sleeve pipe and is not less than 150 newton, measures from the outer stratum of sleeve pipe
The signal of telecommunication, often group electrode package is less than 0.5 ohm containing two piston electrode probes, contact resistance, and four layers of metallic copper sleeve are compound alive
Plug structure, interlayer is provided with bag fluorine sealing ring, to reduce the flexible resistance of telescoping cylinder.
Wherein, as it is shown on figure 3, electronics unit 2 includes the first Acquisition Circuit, the second Acquisition Circuit, a DSP
(Digital Signal Processing Digital Signal Processing) chip, the second dsp chip, the first CAN interface, the 2nd CAN connect
Mouth and crystal oscillator；
First Acquisition Circuit is connected with the first dsp chip, and the first dsp chip and the first CAN interface connect, and second gathers electricity
Road is connected with the second dsp chip, and the second dsp chip and the second CAN interface connect, crystal oscillator and the first dsp chip and the 2nd DSP core
Sheet connects respectively.
Wherein, the output signal of the first Acquisition Circuit is input to the first dsp chip, and the first dsp chip gathers electricity to first
The output signal on road processes, and this signal is input to the first CAN interface, and the first CAN interface is connected in CAN,
By CAN, the signal processed by the first dsp chip is input to the second dsp chip；The output letter of the second Acquisition Circuit
Number it is input to the second dsp chip, second dsp chip signal to processing and the output of the second Acquisition Circuit through the first dsp chip
Signal carries out Digital Signal Processing, and crystal oscillator provides clock power for the first dsp chip and the second dsp chip, drives a DSP core
Sheet and the second dsp chip normally work.
Seeing Fig. 3, the first Acquisition Circuit includes: the first Isolation Amplifier Module, the second Isolation Amplifier Module, an A/D
(Analog/Digital analog/digital) modular converter, the 2nd A/D modular converter and an A/D isolation module；
First Isolation Amplifier Module is connected with an A/D modular converter, the second Isolation Amplifier Module and the 2nd A/D modulus of conversion
Block is connected, and an A/D isolation module connects respectively with an A/D modular converter and the 2nd A/D modular converter.
Wherein, the reference voltage that reference electrode 6 is measured is input to the first Isolation Amplifier Module, the first Isolation Amplifier Module
This reference voltage carries out isolation amplify, and the reference voltage after isolation amplification is input to an A/D modular converter, an A/
The analogue signal that first Isolation Amplifier Module exports is converted to digital signal by D modular converter, and by the numeral of this reference voltage
Signal is input to an A/D isolation module；The emission current launching sample circuit output is input to the second Isolation Amplifier Module,
Second Isolation Amplifier Module carries out isolation and amplifies this emission current, and the emission current after isolation amplification is input to the 2nd A/
D modular converter, the analogue signal that the second Isolation Amplifier Module exports is converted to digital signal by the 2nd A/D modular converter, and will
The digital signal of this emission current is input to an A/D isolation module；The oneth A/D isolation module digital signal to reference voltage
Isolate with the digital signal of emission current.
Wherein, an A/D isolation module and the first dsp chip connect, and the signal by an A/D isolation module isolation is defeated
Entering to the first dsp chip, the first dsp chip carries out digital phase sensitivity detection to the signal of input.
Seeing Fig. 3, the second Acquisition Circuit includes: Signal-regulated kinase and the 3rd A/D modular converter；
Signal-regulated kinase and the 3rd A/D modular converter connect, and the 3rd A/D modular converter and the second dsp chip connect.
Wherein, the signal that Signal-regulated kinase exports being input to the 3rd A/D modular converter, the 3rd A/D modular converter will
The analogue signal of input is converted to digital signal, and the digital signal after conversion is input to the second dsp chip, the 2nd DSP core
Sheet carries out data tissue to the signal of input, order controls and the detection of state parameter.
Wherein, top electrodes 3 and bottom electrode 12 are the spring leaf of a rhombus, and top electrodes 3 and bottom electrode
The Breadth Maximum of 12 is equal to the maximum gauge of oil well casing inwall.
Wherein, the inner diameter of Different Strata oil well casing may differ, and top electrodes 3 and bottom electrode 12 is designed
It is the spring leaf of a rhombus, when this equipment is positioned at the position of oil well casing inner diameter maximum, this top electrodes 3 and end
Portion's electrode 12 just with oil well casing contact internal walls, when this equipment is positioned at the less position of oil well casing inner diameter, Pedicellus et Pericarpium Trapae
Top electrodes 3 and the bottom electrode 12 of shape spring leaf shrink, so, and any position no matter this equipment being positioned in oil well
Put, this top electrodes 3 can be made well to contact with oil well casing inwall with bottom electrode 12.
Further, electronics unit 2 also includes: temperature sensor and transmitting sample circuit；
Temperature sensor is connected with Signal-regulated kinase, launches sample circuit and the second Isolation Amplifier Module connects.
Wherein, temperature sensor is for measuring the temperature of electronics unit, and the temperature of measurement is input to signal condition
Module, launches sample circuit and samples for the signal launching top electrodes and bottom electrode, obtain emission current.
Wherein, the radiating circuit being positioned at ground launches the signal of telecommunication by top electrodes 3 or bottom electrode 12, is positioned at electronics
This transmitting signal of telecommunication is sampled by the transmitting sample circuit of unit 2, obtains emission current, and this emission current is input to
Two Isolation Amplifier Module.
Wherein, hydraulic means 4 includes: pressure transducer, backup sensor, direct current generator, electromagnetic valve, spring and note plug
Pump；
Direct current generator is connected respectively with electromagnetic valve and piston pump, and spring is connected with piston pump, and pressure transducer and backup pass
Sensor is connected with Signal-regulated kinase respectively.
Wherein, pressure transducer is for measuring the pressure in hydraulic fluid chamber 5, and the pressure of measurement is input to signal condition
Module；Backup sensor is for measuring the piston 10 backup power to internal surface of sleeve pipe, and this backup power is input to signal condition mould
Block.
Wherein, when direct current generator rotates forward, opening electromagnetic valve, spring is upheld downwards, is led to by the hydraulic oil in hydraulic means 4
Cross piston pump to be injected in hydraulic fluid chamber 5；When direct current generator inverts, spring contraction, by piston pump by hydraulic fluid chamber 5
Hydraulic oil is extracted in hydraulic means 4.
Wherein, advance data collecting unit 11 includes: the first differential amplification module, the second differential amplification module, the 4th A/D
Modular converter, the 5th A/D modular converter, reference voltage module, the 2nd A/D isolation module, DC/DC insulating power supply, the 3rd DSP core
Sheet and the 3rd CAN interface；
First differential amplification module is connected with the 4th A/D modular converter, the second differential amplification module and the 5th A/D modulus of conversion
Block connects, and reference voltage module is connected with the 4th A/D modular converter, and reference voltage module is with the 5th A/D modular converter even
Connecing, the 2nd A/D isolation module is connected with the 4th A/D modular converter, the 5th A/D modular converter and the 3rd dsp chip respectively, DC/
DC insulating power supply connects respectively with the 2nd A/D isolation module and the 3rd dsp chip, and the 3rd dsp chip and the 3rd CAN interface are even
Connect.
Wherein, top is measured signal that electrode 7 measures and middle part is measured the signal that electrode 8 measures and is input to the first difference
Amplification module is amplified, and the signal amplified through the first differential amplification module is input to the 4th A/D modular converter, the 4th A/
The analogue signal of input is converted to digital signal by D modular converter, and this digital signal is input to the 2nd A/D isolation module；
Middle part is measured electrode 8 and bottom measure the two paths of signals that electrode 9 measures and be input to the second differential amplification module and be amplified, will
The signal amplified through the second differential amplification module is input to the 5th A/D modular converter, and the 5th A/D modular converter is by the mould of input
Intend signal and be converted to digital signal, and this digital signal is input to the 2nd A/D isolation module；2nd A/D isolation module is by
The digital signal of four A/D modular converters and the input of the 5th A/D modular converter is isolated, and isolation signals is input to the 3rd
Dsp chip, the 3rd dsp chip carries out digital phase sensitivity detection process to the digital signal of input, and the signal input after processing
To the 3rd CAN interface, the signal carrying out processing by the 3rd dsp chip is input to CAN by the 3rd CAN interface, and passes through
This signal is input in the second dsp chip by CAN.
Wherein, DC/DC insulating power supply is for providing insulating power supply, to subtract to the 2nd A/D isolation module and the 3rd dsp chip
Disturb between few road, improve the detection of the signal of the signal to the first differential amplification module input and the input of the second differential amplification module
Precision.
Wherein, the signal of telecommunication that electrode 7 is measured on top, electrode 8 is measured at middle part and bottom measurement electrode 9 is measured is the faintest,
Advance data collecting unit 11 is arranged on bottom and measures the lower section of electrode 9, make top measure electrode 7, middle part measurement electrode 8 and
Bottom is measured the signal of telecommunication of electrode 9 measurement and is closely input to advance data collecting unit 11, reduces the length of input line
The interference brought, improves the signal to noise ratio of measurement.
Wherein, the A/D modular converter in the embodiment of the present invention uses 24 A/D converters being.
Further, seeing Fig. 3, this equipment also includes: remote unit 1；
Remote unit 1 at least includes CTS(Common Type System common type system) interface, CTS interface and
Two dsp chips connect.
Wherein, remote unit 1 for transmitting the logging signal in the DTB bus of down-hole, the second dsp chip will process after letter
Number being input to remote unit 1, and then be transferred to ground, this signal is processed by the device on ground, and then obtains around oil well
The saturation of stratum remaining oil.
Wherein, after the radiating circuit on ground launches a signal of telecommunication by top electrodes 3, sending out in electronics unit 2
Penetrating sample circuit to be sampled this transmitting signal, obtain the first transmitting sampling current, electronics unit 2 launches sampling to first
The signal that electrode 7 is measured on electric current, reference voltage and top, electrode 8 is measured at middle part and bottom measurement electrode 9 is measured carries out numeral inspection
Ripple processes, and obtains the first process signal.After the radiating circuit on ground launches a signal of telecommunication by bottom electrode 12, electronics
This transmitting signal is sampled by the transmitting sample circuit in unit 2, obtains the second transmitting sampling current, and electronics unit 2 is right
Second launches the letter that electrode 7 is measured on sampling current, reference voltage and top, electrode 8 is measured at middle part and bottom measurement electrode 9 is measured
Number carry out digital detection process, obtain the second process signal.Process signal and second by CTS interface 11 by first and process signal
Delivering to ground, ground device processes signal and second according to first and processes signal, calculates the resistivity of earth layer around oil well.
In embodiments of the present invention, control hydraulic means in hydraulic fluid chamber, inject hydraulic oil, hydraulic pressure in hydraulic fluid chamber
Under the dynamic action of oil, drive default value piston the most separately, the reference electrode being arranged on piston, top are surveyed
Amount electrode, middle part are measured electrode and bottom and are measured electrode and act on internal surface of sleeve pipe, according to reference electrode, top measure electrode, in
Electrode is measured in portion and the signal of telecommunication on stratum outside electrode measurement sleeve pipe is measured in bottom, calculates the resistivity of earth layer around oil well.Due to
The hydraulic coupling that hydraulic oil acts on internal surface of sleeve pipe is relatively big, makes electrode can contact well with internal surface of sleeve pipe, is not required to work before measurement
Well-flushing paraffin cutting is carried out as personnel, simple to operate.
Embodiment two
A kind of method embodiments providing measured resistivity, the method can be according to described in above-mentioned Fig. 2 and Fig. 3
Equipment carrys out measured resistivity, sees Fig. 4, and the method includes:
Step 101: control hydraulic means and inject hydraulic oil in hydraulic fluid chamber, make the piston that is arranged on hydraulic fluid chamber to
Outer separately, by the reference electrode being arranged on piston, electrode is measured on top, electrode is measured at middle part and bottom measure electrode effect with
Internal surface of sleeve pipe；
Step 102: measure electrode according to reference electrode, top, electrode is measured at middle part and the letter of bottom measurement electrode measurement
Number, calculate the resistivity of earth layer around oil well.
Wherein, electronics unit includes launching sample circuit；
Correspondingly, above-mentioned steps 102 can particularly as follows:
To launch sample circuit sampling obtain that electrode is measured on the first transmitting sampling current and top, electrode is measured at middle part and under
Portion measures the signal electron instrument unit of electrode measurement and the signal of input is carried out digital detection process, obtains the first process signal；
To launch sample circuit sampling obtain second transmitting sampling current and top measure electrode, middle part measure electrode and
Bottom is measured the signal electron instrument unit of electrode measurement and the signal of input is carried out digital detection process, obtains the second process letter
Number；
Process signal and second according to first and process signal, calculate the resistivity of earth layer around oil well.
In embodiments of the present invention, control hydraulic means in hydraulic fluid chamber, inject hydraulic oil, hydraulic pressure in hydraulic fluid chamber
Under the dynamic action of oil, drive default value piston the most separately, the reference electrode being arranged on piston, top are surveyed
Amount electrode, middle part are measured electrode and bottom and are measured electrode and act on internal surface of sleeve pipe, according to reference electrode, top measure electrode, in
Electrode is measured in portion and the signal of telecommunication on stratum outside electrode measurement sleeve pipe is measured in bottom, calculates the resistivity of earth layer around oil well.Due to
The hydraulic coupling that hydraulic oil acts on internal surface of sleeve pipe is relatively big, makes electrode can contact well with internal surface of sleeve pipe, is not required to work before measurement
Well-flushing paraffin cutting is carried out as personnel, simple to operate.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can pass through hardware
Completing, it is also possible to instruct relevant hardware by program and complete, described program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read only memory, disk or CD etc..
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (9)
1. the equipment of a measured resistivity, it is characterised in that described equipment includes: electronics unit, top electrodes, hydraulic pressure fill
Put, hydraulic fluid chamber, reference electrode, electrode is measured on top, electrode is measured at middle part, electrode is measured in bottom, default value piston, front
Put data acquisition unit and bottom electrode；
Described electronics unit is connected with one end of described top electrodes, the other end of described top electrodes and described hydraulic means
One end connect, the other end of described hydraulic means is connected with one end of described hydraulic fluid chamber, the other end of described hydraulic fluid chamber
Being connected with one end of described advance data collecting unit, the other end of described advance data collecting unit is with described bottom electrode even
Connecing, described hydraulic fluid chamber is to have default value hole in hollow-core construction, and described hydraulic fluid chamber, described default value piston
Being separately mounted on default value the hole of described hydraulic fluid chamber, electrode, described middle part are measured in described reference electrode, described top
Measure electrode and described bottom is measured electrode and is separately mounted on described piston；
Wherein, described electronics unit includes: the first Acquisition Circuit, the second Acquisition Circuit, the first Digital Signal Processing DSP core
Sheet, the second dsp chip, the first controller area network interface, the second CAN interface and crystal oscillator；
Described first Acquisition Circuit is connected with the first dsp chip, and described first dsp chip and the first CAN interface connect, and described the
Two Acquisition Circuit are connected with described second dsp chip, and described second dsp chip is connected with described second CAN interface, described crystal oscillator
It is connected respectively with described first dsp chip and described second dsp chip.
Equipment the most according to claim 1, it is characterised in that described first Acquisition Circuit includes: mould is amplified in the first isolation
Block, the second Isolation Amplifier Module, the first analog/digital A/D modular converter, the 2nd A/D modular converter, an A/D isolation module；
Described first Isolation Amplifier Module is connected with a described A/D modular converter, and described second Isolation Amplifier Module is with described
2nd A/D modular converter connects, a described A/D isolation module and a described A/D modular converter and described 2nd A/D conversion
Module connects respectively.
Equipment the most according to claim 1, it is characterised in that described second Acquisition Circuit includes: Signal-regulated kinase and
3rd A/D modular converter；
Described Signal-regulated kinase is connected with described 3rd A/D modular converter.
Equipment the most according to claim 3, it is characterised in that described electronics unit also includes: temperature sensor and send out
Penetrate sample circuit；
Described temperature sensor is connected with described Signal-regulated kinase, and described transmitting sample circuit and the second Isolation Amplifier Module are even
Connect.
Equipment the most according to claim 3, it is characterised in that described hydraulic means includes: pressure transducer, backup sensing
Device, direct current generator, electromagnetic valve, spring and piston pump；
Described pressure transducer and described backup sensor are connected with described Signal-regulated kinase respectively；
Described direct current generator is connected respectively with described electromagnetic valve and described piston pump, and described spring is connected with described piston pump.
Equipment the most according to claim 1, it is characterised in that described advance data collecting unit includes: the first difference is put
Big module, the second differential amplification module, the 4th A/D modular converter, the 5th A/D modular converter, reference voltage module, the 2nd A/D
Isolation module, DC-DC DC/DC insulating power supply, the 3rd dsp chip and the 3rd CAN interface；
Described first differential amplification module is connected with described 4th A/D modular converter, and described second differential amplification module is with described
5th A/D modular converter connects, described reference voltage module and described 4th A/D modular converter and described 5th A/D modulus of conversion
Block connects respectively, described 2nd A/D isolation module respectively with described 4th A/D modular converter, described 5th A/D modular converter and
Described 3rd dsp chip connects, and described DC/DC insulating power supply divides with described 2nd A/D isolation module and described 3rd dsp chip
Not connecting, described 3rd dsp chip is connected with described 3rd CAN interface.
Equipment the most according to claim 1, it is characterised in that described equipment also includes: remote unit；
Described remote unit at least includes that common type system CTS interface, described CTS interface are connected with described second dsp chip.
8. the method by the device measuring resistivity described in claim 1 to 7 any claim, it is characterised in that
Described method includes:
Control hydraulic means in hydraulic fluid chamber, inject hydraulic oil, make the piston being arranged on described hydraulic fluid chamber outwards separate,
By the reference electrode being arranged on described piston, electrode is measured on top, electrode is measured at middle part and electrode effect and set are measured in bottom
Inside pipe wall；
Measure electrode according to described reference electrode, described top, electrode is measured at described middle part and electrode measurement is measured in described bottom
Signal, calculate earth layer around oil well resistivity.
Method the most according to claim 8, it is characterised in that electronics unit includes launching sample circuit；
Correspondingly, described according to described reference electrode, described top measurement electrode, described middle part measurement electrode and the survey of described bottom
The signal of amount electrode measurement, calculates the resistivity of earth layer around oil well, including:
The sampling of described transmitting sample circuit is obtained the first transmitting sampling current and electrode is measured on described top, described middle part is measured
Electrode and described bottom are measured the signal electron instrument unit of electrode measurement and the signal of input are carried out digital detection process, obtain the
One processes signal；
Electrode is measured on the second transmitting sampling current and the described top that obtain the sampling of described transmitting sample circuit, described middle part is surveyed
Amount electrode and described bottom are measured the signal electron instrument unit of electrode measurement and the signal of input are carried out digital detection process, obtain
Second processes signal；
Process signal and described second according to described first and process signal, calculate the resistivity of earth layer around oil well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310172677.9A CN104141489B (en) | 2013-05-10 | 2013-05-10 | The equipment of a kind of measured resistivity and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310172677.9A CN104141489B (en) | 2013-05-10 | 2013-05-10 | The equipment of a kind of measured resistivity and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104141489A CN104141489A (en) | 2014-11-12 |
| CN104141489B true CN104141489B (en) | 2016-12-28 |
Family
ID=51850801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310172677.9A Active CN104141489B (en) | 2013-05-10 | 2013-05-10 | The equipment of a kind of measured resistivity and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104141489B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112127880B (en) * | 2020-09-27 | 2021-09-14 | 电子科技大学 | Measuring method of ultra-deep resistivity |
| CN112782772A (en) * | 2021-01-05 | 2021-05-11 | 上海应用技术大学 | Telescopic detection electrode device for well logging |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5510712A (en) * | 1994-05-02 | 1996-04-23 | Schlumberger Technology Corporation | Method and apparatus for measuring formation resistivity in cased holes |
| US5680049A (en) * | 1995-12-11 | 1997-10-21 | Western Atlas International, Inc. | Apparatus for measuring formation resistivity through a conductive casing having a coaxial tubing inserted therein |
| CN1348546A (en) * | 1999-04-28 | 2002-05-08 | 施蓝姆伯格技术公司 | A method and apparatus for determining the resistivity of a formation through which a cased well passes |
| CN201273189Y (en) * | 2008-09-27 | 2009-07-15 | 中国石油天然气集团公司 | Through casing resistivity logging detector |
| CN203321493U (en) * | 2013-05-10 | 2013-12-04 | 中国石油天然气集团公司 | Equipment for measuring specific resistance |
-
2013
- 2013-05-10 CN CN201310172677.9A patent/CN104141489B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5510712A (en) * | 1994-05-02 | 1996-04-23 | Schlumberger Technology Corporation | Method and apparatus for measuring formation resistivity in cased holes |
| US5680049A (en) * | 1995-12-11 | 1997-10-21 | Western Atlas International, Inc. | Apparatus for measuring formation resistivity through a conductive casing having a coaxial tubing inserted therein |
| CN1348546A (en) * | 1999-04-28 | 2002-05-08 | 施蓝姆伯格技术公司 | A method and apparatus for determining the resistivity of a formation through which a cased well passes |
| CN201273189Y (en) * | 2008-09-27 | 2009-07-15 | 中国石油天然气集团公司 | Through casing resistivity logging detector |
| CN203321493U (en) * | 2013-05-10 | 2013-12-04 | 中国石油天然气集团公司 | Equipment for measuring specific resistance |
Non-Patent Citations (1)
| Title |
|---|
| 过套管电阻率测井模型机模拟井实验研究;严正国等;《测井技术》;20110630;第35卷(第3期);第215-217页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104141489A (en) | 2014-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105484742B (en) | A kind of multi-parameter logging while drilling apparatus | |
| NO341979B1 (en) | Telemetry system for transmitting an electromagnetic signal inside a borehole, and a MWD system comprising the telemetry system | |
| US9322796B2 (en) | Fluid resistivity sensor | |
| US9158025B2 (en) | Pad device for resistivity imaging in the wells with oil based drilling fluid | |
| CN101688924A (en) | Method and apparatus with high resolution electrode configuration of the imaging that is used for oil-base mud | |
| US9671211B2 (en) | Method and apparatus for measuring linear displacement | |
| CN103547943A (en) | Apparatus and method for multi-component wellbore electric field measurements using capacitive sensors | |
| CN102966349A (en) | System and method for monitoring cross-hole electromagnetic transient | |
| CN101063407A (en) | Micro-balloons polar plate combining with compensate denseness skateboard | |
| NO20120035A1 (en) | Method and device for galvanic, multi-frequency imaging of resistivity in the subsurface | |
| US20150337654A1 (en) | Obtaining a downhole core sample measurement using logging while coring | |
| CN105738212A (en) | Rock tri-axial test crack extension observation device based on electrical capacitance tomography technique | |
| CN104141489B (en) | The equipment of a kind of measured resistivity and method | |
| WO2014130267A2 (en) | Coiled tubing system with multiple integral pressure sensors and dts | |
| NO20130936A1 (en) | Electrical imaging device operating in oil-based sludge and formation with low resistivity | |
| CN202937259U (en) | Inter-well electromagnetic transient monitoring system | |
| CN110513104A (en) | One kind is with brill orientation combination metering device | |
| CN203321493U (en) | Equipment for measuring specific resistance | |
| CN110542930A (en) | Device and system for detecting damage information of sleeve | |
| CN201407031Y (en) | Dual induction laterolog-eight tool | |
| CN215292460U (en) | Drilling device for lateral resistivity | |
| CN2898301Y (en) | Microspherical polar plate combined with compensated-density slide board | |
| CN105114056B (en) | Electrohydraulic type oil reservoir positioner | |
| CN204646217U (en) | Fireflood well superhigh temperature section tester instrument and test macro | |
| CN201802395U (en) | Dual laterolog tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |