CN103233723A - Small-diameter electromagnetic flow comprehensive logging instrument - Google Patents
Small-diameter electromagnetic flow comprehensive logging instrument Download PDFInfo
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- CN103233723A CN103233723A CN2013101757512A CN201310175751A CN103233723A CN 103233723 A CN103233723 A CN 103233723A CN 2013101757512 A CN2013101757512 A CN 2013101757512A CN 201310175751 A CN201310175751 A CN 201310175751A CN 103233723 A CN103233723 A CN 103233723A
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Abstract
The invention discloses a small-diameter electromagnetic flow comprehensive logging instrument which comprises an underground electromagnetic flow logging instrument and a ground logging control system. The underground electromagnetic flow logging instrument comprises a lower centering device, an electromagnetic flow meter, a hole diameter measuring instrument, a pressure and temperature measuring device, a data processing device and a cable connector. The ground logging control system comprises a cable winch, an underground instrument signal processing circuit, a ground processor module connected with the underground instrument signal processing circuit and an industrial control computer connected with the ground processor module, wherein an optical-electricity encoder is installed on the cable winch and is connected with the ground processor module. The small-diameter electromagnetic flow comprehensive logging instrument is compact in structure, reasonable in design, simple and convenient to operate, good in reliability, high in logging accuracy, good in using effect and convenient to popularize and use.
Description
Technical field
The present invention relates to a kind of logging instrument, especially relate to a kind of small-bore Electromagnetic Flow comprehensive logging instrument.
Background technology
Turbine flowmeter has been adopted in flow rate log more in the prior art, and the sensor of turbine flowmeter is made up of pivoted blade, and magnetic-flux-linkage or light tight key are housed on the pivot, the very wear-resisting industrial sapphire of the general employing of bearing.Because the blade of turbine has certain inclination angle, when fluid flows through blade, can produce a rotating torque, make turbine rotation, because special frame for movement, make turbine flowmeter must have certain startup flow velocity just can make blade rotation, and can't measure than low discharge; And turbine flowmeter is subjected to the influence of the rock particles that produces in the foreign material and drilling process in the well easily, causes measure error to increase.In addition, when logging instrument can not accomplish that strictness is placed in the middle, the interpretation of logging data resultant error will be greatly; The explanation of flow rate log will be explained with reference to hole diameter and other hydrogeological logging curve generalization, just can draw correct result; Under the situation of not knowing the flowing temperature gradient, just can not understand the relative size of the water content of each well section and full well section well; And in the prior art, these problems all are not well solved.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned deficiency of the prior art, provides a kind of small-bore Electromagnetic Flow comprehensive logging instrument, its compact conformation, reasonable in design, easy and simple to handle, good reliability, the certainty of measurement height, result of use is good, is convenient to promote the use of.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of small-bore Electromagnetic Flow comprehensive logging instrument, it is characterized in that: comprise the underground electromagnetic flow logging instrument that is arranged on the down-hole and the ground observing and controlling system that arranges on the ground and be connected and communicate by letter by communication cable and underground electromagnetic flow logging instrument, described underground electromagnetic flow logging instrument comprises the following centralizer that arranges from top to bottom successively, electromagnetic flowmeter, the caliper logging instrument, pressure and temperature measuring equipment, data processing equipment and cable connector, described ground observing and controlling system comprises for the cable reel that connects communication cable, be used for the image data treating apparatus and handle the downhole instrument signal processing circuit of the downhole instrument signal that obtains, the ground based processor module of joining with the downhole instrument signal processing circuit and the industrial control computer that joins with the ground based processor module, the photoelectric encoder that detects for the speed to the underground electromagnetic flow logging instrument is installed on the described cable reel, and described photoelectric encoder and described ground based processor module are joined;
Described down centralizer comprise righting rod, be connected the guide head of described righting rod bottom and be arranged on place, described righting rod centre position and match constituted diameter can be with a plurality of spring leafs of setting upright of the elastic waist drum shape of well radius variations, be symmetrically arranged with two righting mechanisms that can slide at righting rod and two on the described righting rod and be respectively applied to the sliding position of two righting mechanisms on righting rod carried out spacing interstage sleeve, the described two ends of setting upright spring leaf are hinged with two described righting mechanisms respectively; The bottom of described electromagnetic flowmeter is threaded with the described top of righting rod down;
Described caliper logging instrument comprises caliper logging instrument pillar and is sleeved on the interior pipe of described caliper logging instrument pillar inside, and caliper logging mechanism, be used for to promote the recline backup mechanism and being used for of the borehole wall of described caliper logging mechanism and drive the actuating unit of described backup mechanism, described actuating unit comprises motor, the reductor that joins with motor output shaft, with the speed reducer output shaft leading screw that joins and the feed screw nut that is threaded on the described leading screw, in described on the inwall of pipe fixedly connected being useful on feed screw nut is moved to the lower stroke switch that the lower end extreme position detects and is used for feed screw nut is moved to the upper stroke switch that the upper end extreme position detects at leading screw, be fixedly connected with feeler lever on the described feed screw nut, be fixedly connected with the contact that matches with described upper stroke switch and lower stroke switch on the described feeler lever, the fixedly connected motor cabinet that described reductor and motor are installed that is useful in the top of pipe in described, on the inwall of pipe bearing support is installed in described, is equipped with in the described bearing support for the bearing that supports described leading screw; Described backup mechanism comprise be sleeved on described in the inner backup spring base of pipe, the top of described backup spring base is fixedly connected with many and reaches described feed screw nut side and can withstand on backup spring on the described feeler lever, and the bottom of described backup spring base is fixedly connected with connecting axle; Described caliper logging mechanism comprise with described in the caliper logging knee-joint head that is threaded of pipe bottom, evenly be hinged on the described caliper logging knee-joint head many caliper logging arms with fixedly connected on inner pipe and be used for the linear displacement transducer that the straight-line displacement amount to the backup spring base detects, on the every described caliper logging arm gear is installed all, the bottom thread of described connecting axle is connected with the tooth bar mount pad, and the many corresponding tooth bars that match with a plurality of described gears respectively are installed on the described tooth bar mount pad;
Described pressure and temperature measuring equipment comprise the transition joint of column, described transition joint inside is provided with the cavity of column, described transition joint is provided with the intake-outlet that supplies water and flow into cavity or flow out cavity, and described cavity inside two ends are respectively arranged with temperature pick up and pressure sensor; The bottom of described transition joint is threaded with described caliper logging instrument pillar;
Described data processing equipment comprises the data processing equipment pillar and is arranged on the data processing circuit plate of data processing equipment pillar inside and is used for the gaily decorated basket of installation data treatment circuit plate, the bottom of described data processing equipment pillar is threaded with described transition joint, the down hole processor module that is laid with the signal acquisition circuit module on the described data processing circuit plate and joins with the signal acquisition circuit module, and motor-drive circuit module and the pulse driving circuit module of joining with described down hole processor module, described electromagnetic flowmeter, linear displacement transducer, temperature pick up and pressure sensor all join with described signal acquisition circuit module, described upper stroke switch and lower stroke switch all join with described down hole processor module, described motor and described motor-drive circuit module are joined, and described communication cable joins by cable connector and described pulse driving circuit module.
Above-mentioned small-bore Electromagnetic Flow comprehensive logging instrument, it is characterized in that: described righting mechanism comprises the inner spring seat that is sleeved on the described righting rod and the outer spring seat that is threaded with described inner spring seat, described outer spring seat matches with the inner spring seat and has formed a plurality of hinge holes, a plurality of described ends of setting upright spring leaf a plurality of hinge holes on corresponding and one of them described righting mechanism respectively are hinged, and a plurality of described other ends of setting upright spring leaf a plurality of hinge holes on corresponding and another described righting mechanism respectively are hinged.
Above-mentioned small-bore Electromagnetic Flow comprehensive logging instrument is characterized in that: the described spring leaf of setting upright is arcuate bombing leaf, and the described quantity of setting upright spring leaf is three, and the quantity of the hinge hole on corresponding each described righting mechanism is three.
Above-mentioned small-bore Electromagnetic Flow comprehensive logging instrument is characterized in that: described gear is for semicircle, and the quantity of described caliper logging arm is three, and the quantity of corresponding described gear is three, and the quantity of corresponding described tooth bar is three.
Above-mentioned small-bore Electromagnetic Flow comprehensive logging instrument, it is characterized in that: have gathering sill on the pipe in described, be fixedly connected with the guiding feather key that matches with gathering sill on the described feed screw nut, the bottom of described tooth bar mount pad is connected with sleeve pipe, be fixedly connected with the electromagnetic flowmeter joint on the described sleeve pipe, the top of described electromagnetic flowmeter is connected with described electromagnetic flowmeter joint screw thread.
Above-mentioned small-bore Electromagnetic Flow comprehensive logging instrument is characterized in that: be provided with cross-over block between described data processing circuit plate and the described gaily decorated basket.
Above-mentioned small-bore Electromagnetic Flow comprehensive logging instrument, it is characterized in that: described down hole processor module mainly is made of single-chip microcomputer MSP430F157, described signal acquisition circuit module is made of the amplifying circuit module of joining successively, filtering shaping circuit module and A/D change-over circuit module, and described A/D change-over circuit module is integrated in described single-chip microcomputer MSP430F157 inside; Described temperature pick up is the PN junction temperature pick up, and described pressure sensor is piezoresistive pressure sensor.
Above-mentioned small-bore Electromagnetic Flow comprehensive logging instrument, it is characterized in that: described pulse driving circuit module comprises chip LM324, polar capacitor C11, resistance R 1, R7, R13, R17, R18 and R19, and diode D6 and D8, the pin 3 of described chip LM324 joins by the output IO1 of resistance R 19 with the down hole processor module, the pin 2 of described chip LM324 joins by the output IO2 of resistance R 18 with the down hole processor module, the pin 1 of described chip LM324, pin 5, pin 10 and pin 12 all join by the pin 2 of resistance R 17 with chip LM324, the pin 6 of described chip LM324 and pin 7 all join by the positive pole of resistance R 13 with polar capacitor C11, the pin 8 of described chip LM324 and pin 9 all join by the positive pole of resistance R 7 with polar capacitor C11, the pin 13 of described chip LM324 and pin 14 all join by the positive pole of resistance R 1 with polar capacitor C11, the negative pole of the positive pole of the positive pole of described polar capacitor C1 and diode D6 and diode D8 joins, the pin 4 of described chip LM324 and the negative pole of diode D6 all join with+10V power supply, the anodal of the pin 11 of described chip LM324 and diode D8 all joins with-10V power supply, and the negative pole of described polar capacitor C11 is the output OUT of described pulse driving circuit module.
Above-mentioned small-bore Electromagnetic Flow comprehensive logging instrument, it is characterized in that: described cable connector comprises the pipe shape round splce that is threaded in described data processing equipment pillar top and the noose that is sleeved on described round splce inside, the top of described round splce is provided with external screw thread, the bottom of described noose is threaded and is useful on round splce inner space and the separated seal receptacle of data processing equipment pillar, high-voltage plug has been threaded on the described seal receptacle, the described gaily decorated basket is fixedlyed connected with seal receptacle, be provided with the connector assembly nut in the described noose, connector assembly has been threaded on the described connector assembly nut, on the described connector assembly aviation plug is installed, is provided with buffer spring between described connector assembly and the described noose; The output of described pulse driving circuit module is electrically connected with described high-voltage plug, and described high-voltage plug is electrically connected with described aviation plug, and described aviation plug is electrically connected with described communication cable.
Above-mentioned small-bore Electromagnetic Flow comprehensive logging instrument, it is characterized in that: described downhole instrument signal processing circuit is made of the amplification and rectification circuit module of joining successively and serial-parallel conversion circuit module, and described ground based processor module mainly is made of single-chip microcomputer MSP430F1611.
The present invention compared with prior art has the following advantages:
1, compact conformation of the present invention is reasonable in design, and it is convenient to realize.
2, data processing equipment of the present invention has adopted the method for integrated circuit modules, has improved stability and the reliability of circuit, provides cost savings, and has low in energy consumption, zero point stability, advantage that accuracy is high.
3, the present invention has adopted electromagnetic flowmeter, and antijamming capability is strong, measures reliably, and the precision height can effectively reduce the interference of the grains of sand and stratum in the well liquid, makes flow measuring data more stable.
4, caliper logging instrument of the present invention can record the hole diameter data, can play the effect of centralizer again, cooperates centralizer down again, can make logging instrument placed in the middle well.
5, the present invention has optimized the structure of time centralizer, can make instrument up and down freely, guarantees that instrument is placed in the middle relatively, carries out continuous measurement.
6, the present invention is the advanced high accuracy of a cover, the Electromagnetic Flow logging instrument of wide range, overcome the conventional turbine flow meter and be subjected to well liquid turbidity, well liquid suspension, well liquid impurity effect, shortcomings such as measure error is big, turbine rotation is undesired, perishable can satisfy the requirement of hydrology boring flow rate log.
7, the present invention does not have mechanical movable part, and it is little and do not block characteristics such as sand to start flow velocity, is not subjected to that foreign material influence in the well, has easy and simple to handle, good reliability, characteristics that certainty of measurement is high.
8, the present invention has overcome many influence factors of conventional turbine traffic logger substantially, the variation of flow rate log to the different intervals of boring rock stratum section different depth upper reaches amount, the computational problem of dividing the hydrogeological parameters such as thickness, the degree of depth, the number of plies and zonal flow rate, transmission coefficient and the radius of influence in aquifer will effectively be solved.
In sum, compact conformation of the present invention, reasonable in design, easy and simple to handle, good reliability, the certainty of measurement height, result of use is good, is convenient to promote the use of.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of centralizer under the present invention.
Fig. 3 is the structural representation of electromagnetic flowmeter of the present invention.
Fig. 4 is the structural representation of electromagnetic flowmeter joint of the present invention.
Fig. 5 is the structural representation of caliper logging mechanism of the present invention and backup mechanism.
Fig. 6 is the structural representation of actuating unit of the present invention.
Fig. 7 is the structural representation of pressure of the present invention and temperature measuring equipment.
Fig. 8 is the structural representation of data processing equipment of the present invention.
Fig. 9 is connected block diagram for underground electromagnetic flow logging instrument of the present invention with the circuit of ground observing and controlling system.
Figure 10 is the circuit theory diagrams of pulse driving circuit module of the present invention.
Figure 11 is the structural representation of cable connector of the present invention.
Description of reference numerals:
The specific embodiment
As Fig. 1 and shown in Figure 9, the present invention includes the underground electromagnetic flow logging instrument that is arranged on the down-hole and the ground observing and controlling system that arranges on the ground and be connected and communicate by letter by communication cable and underground electromagnetic flow logging instrument, described underground electromagnetic flow logging instrument comprises the following centralizer 1 that arranges from top to bottom successively, electromagnetic flowmeter 2, caliper logging instrument 3, pressure and temperature measuring equipment 4, data processing equipment 5 and cable connector 6, described ground observing and controlling system comprises for the cable reel that connects communication cable, be used for image data treating apparatus 5 and handle the downhole instrument signal processing circuit 7 of the downhole instrument signal that obtains, the ground based processor module 8 of joining with downhole instrument signal processing circuit 7 and the industrial control computer 9 that joins with ground based processor module 8, the photoelectric encoder 10 that detects for the speed to the underground electromagnetic flow logging instrument is installed on the described cable reel, and described photoelectric encoder 10 joins with described ground based processor module 8;
As shown in Figure 2, described centralizer 1 down comprises righting rod 1-1, be connected the guide head 1-2 of described righting rod 1-1 bottom and be arranged on described righting rod 1-1 centre position place and match constituted diameter can be with a plurality of spring leaf 1-3 that set upright of the elastic waist drum shape of well radius variations, being symmetrically arranged with two on the described righting rod 1-1 can be respectively applied to the sliding position of two righting mechanisms on righting rod 1-1 carried out spacing interstage sleeve 1-4 righting mechanism that righting rod 1-1 slides and two, and the described two ends of setting upright spring leaf 1-3 are hinged with two described righting mechanisms respectively; The bottom of described electromagnetic flowmeter 2 is threaded with the described top of righting rod 1-1 down; The setting of guide head 1-2 can make and reduce external interference by velocity-stabilization when well liquid flows through this logging instrument, makes survey data stable;
As shown in Figure 5 and Figure 6, described caliper logging instrument 3 comprises caliper logging instrument pillar 3-1 and is sleeved on the interior pipe 3-2 of described caliper logging instrument pillar 3-1 inside, and caliper logging mechanism, be used for to promote the recline backup mechanism and being used for of the borehole wall of described caliper logging mechanism and drive the actuating unit of described backup mechanism, described actuating unit comprises motor 3-3, the reductor 3-4 that joins with motor 3-3 output shaft, with reductor 3-4 output shaft the leading screw 3-5 that joins and the feed screw nut 3-6 that is threaded on the described leading screw 3-5, in described on the inwall of pipe 3-2 fixedly connected being useful on feed screw nut 3-6 is moved to the lower stroke switch 3-7 that the lower end extreme position detects and is used for feed screw nut 3-6 is moved to the upper stroke switch 3-8 that the upper end extreme position detects at leading screw 3-5, be fixedly connected with feeler lever 3-9 on the described feed screw nut 3-6, be fixedly connected with the contact 3-10 that matches with described upper stroke switch 3-8 and lower stroke switch 3-7 on the described feeler lever 3-9, the fixedly connected motor cabinet 3-11 that described reductor 3-4 and motor 3-3 are installed that is useful in the top of pipe 3-2 in described, on the inwall of pipe 3-2 bearing support 3-12 is installed in described, is equipped with in the described bearing support 3-12 for the bearing 3-13 that supports described leading screw 3-5; Described backup mechanism comprise be sleeved on described in the backup spring base 3-14 of pipe 3-2 inside, the top of described backup spring base 3-14 is fixedly connected with many and reaches described feed screw nut 3-6 side and can withstand on backup spring 3-15 on the described feeler lever 3-9, and the bottom of described backup spring base 3-14 is fixedly connected with connecting axle 3-16; Described caliper logging mechanism comprise with described in the caliper logging knee-joint head 3-17 that is threaded of pipe 3-2 bottom, evenly be hinged on many caliper logging arm 3-18 on the described caliper logging knee-joint head 3-17 and be fixedly connected in pipe 3-2 go up and be used for the linear displacement transducer 3-19 that the straight-line displacement amount to backup spring base 3-14 detects, on the every described caliper logging arm 3-18 gear 3-20 is installed all, the bottom thread of described connecting axle 3-16 is connected with tooth bar mount pad 3-21, and the many corresponding tooth bar 3-22 that match with a plurality of described gear 3-20 respectively are installed on the described tooth bar mount pad 3-21; Caliper logging instrument 3 not only has the caliper logging function, sets upright function on also having, and matches with following centralizer 1, can make logging instrument placed in the middle well;
As shown in Figure 7, described pressure and temperature measuring equipment 4 comprise the transition joint 4-1 of column, described transition joint 4-1 inside is provided with the cavity 4-2 of column, described transition joint 4-1 is provided with the intake-outlet 4-3 that supplies water and flow into cavity 4-2 or flow out cavity 4-2, and the inner two ends of described cavity 4-2 are respectively arranged with temperature pick up 4-4 and pressure sensor 4-5; The bottom of described transition joint 4-1 is threaded with described caliper logging instrument pillar 3-1;
As Fig. 8 and shown in Figure 9, described data processing equipment 5 comprises data processing equipment pillar 5-1 and is arranged on the data processing circuit plate 5-2 of data processing equipment pillar 5-1 inside and is used for the gaily decorated basket 5-3 of installation data treatment circuit plate 5-2, the bottom of described data processing equipment pillar 5-1 is threaded with described transition joint 4-1, the down hole processor module 5-5 that is laid with signal acquisition circuit module 5-4 on the described data processing circuit plate 5-2 and joins with signal acquisition circuit module 5-4, and the motor-drive circuit module 5-6 and the pulse driving circuit module 5-7 that join with described down hole processor module 5-5, described electromagnetic flowmeter 2, linear displacement transducer 3-19, temperature pick up 4-4 and pressure sensor 4-5 all join with described signal acquisition circuit module 5-4, described upper stroke switch 3-8 and lower stroke switch 3-7 all join with described down hole processor module 5-5, described motor 3-3 and described motor-drive circuit module 5-6 join, and described communication cable joins with described pulse driving circuit module 5-7 by cable connector 6.Data processing equipment pillar 5-1 has played the withstand voltage effect of waterproof.Data processing circuit plate 5-2 goes up the circuit structure compactness, perfect in shape and function, can satisfy the narrow demand in space in the data processing equipment pillar 5-1, and can gather and analyzing and processing temperature pick up 4-4 and the detected data of pressure sensor 4-5 in electromagnetic flowmeter 2 and caliper logging instrument 3 cathetus displacement transducer 3-19 and pressure and the temperature measuring equipment 4 simultaneously, the electromagnetic flowmeter 2 of signal acquisition circuit module 5-4, linear displacement transducer 3-19, the signal of temperature pick up 4-4 and pressure sensor 4-5 output amplifies, export to down hole processor module 5-5 after filter shape and the A/D conversion process, down hole processor module 5-5 carries out analyzing and processing to its signal that receives, and after encoding under the accurate SECO, be transferred on the communication cable by pulse driving circuit module 5-7, be transferred to ground observing and controlling system by communication cable again.
As shown in Figure 2, in the present embodiment, described righting mechanism comprises the inner spring seat 1-5 that is sleeved on the described righting rod 1-1 and the outer spring seat 1-6 that is threaded with described inner spring seat 1-5, described outer spring seat 1-6 matches with inner spring seat 1-5 and has formed a plurality of hinge hole 1-7, a plurality of described ends of setting upright spring leaf 1-3 a plurality of hinge hole 1-7 on corresponding and one of them described righting mechanism respectively are hinged, and a plurality of described other ends of setting upright spring leaf 1-3 a plurality of hinge hole 1-7 on corresponding and another described righting mechanism respectively are hinged.The described spring leaf 1-3 that sets upright is arcuate bombing leaf, and the described quantity of setting upright spring leaf 1-3 is three, and the quantity of the hinge hole 1-7 on corresponding each described righting mechanism is three.During concrete enforcement, described interstage sleeve 1-4 is by being bolted on the righting rod 1-1, during use, inner spring seat 1-5 and outer spring seat 1-6 integral body can be free to slide at righting rod 1-1, and interstage sleeve 1-4 internally spring base 1-5 and the slip of outer spring seat 1-6 integral body on righting rod 1-1 are carried out spacing.During following well measurements, under the well casing effect, set upright spring leaf 1-3 for three and shrink, two interstage sleeve 1-4 move outward, because three amount of contraction uniformity of setting upright spring leaf 1-3 make whole comprehensive logging instrument can be good at centering, thereby play down the effect of setting upright.
As shown in Figure 3, during concrete enforcement, described electromagnetic flowmeter 2 has adopted the two ends of outsourcing all to have externally threaded electromagnetic flowmeter, carry water inlet and delivery port, during measurement, water enters from water inlet, passes flow meter inside and flows out from delivery port, water velocity in the flow meter is with the size variation of the water yield, the electromagnetic flowmeter internal circuit measure water velocity get final product as calculated the flow value of water outlet.
As shown in Figure 5, in the present embodiment, described gear 3-20 is semicircle, and the quantity of described caliper logging arm 3-18 is three, and the quantity of corresponding described gear 3-20 is three, and the quantity of corresponding described tooth bar 3-22 is three.As shown in Figure 6, in the present embodiment, have gathering sill 3-23 on the described interior pipe 3-2, be fixedly connected with the guiding feather key 3-24 that matches with gathering sill 3-23 on the described feed screw nut 3-6, be used for feed screw nut 3-6 is led; As shown in Figure 1 and Figure 4, in the present embodiment, the bottom of described tooth bar mount pad 3-21 is connected with sleeve pipe 11, is fixedly connected with electromagnetic flowmeter joint 12 on the described sleeve pipe 11, and the top of described electromagnetic flowmeter 2 is threaded with described electromagnetic flowmeter joint 12.During concrete enforcement, leading screw 3-5 joins by shaft coupling 3-25 and reductor 3-4 output shaft, many caliper logging arm 3-18 all are hinged on the described caliper logging knee-joint head 3-17 by bearing pin, backup spring base 3-14 is fixedlyed connected by key with connecting axle 3-16, and linear displacement transducer 3-19 has adopted the linear displacement transducer of outsourcing.During use, energising rear motor 3-3 rotates, reductor 3-4 increases moment of torsion, driving screw mandrel 3-5 through shaft coupling 3-25 rotates, leading screw 3-5 will rotatablely move and become the rectilinear motion of feed screw nut 3-6, feed screw nut 3-6 promotes backup spring 3-15 and drives backup spring base 3-14 motion, backup spring base 3-14 drives tooth bar mount pad 3-21 by connecting axle 3-16 and tooth bar 3-22 moves together, respectively corresponding three the gear 3-20 of three toothed rack 3-22, when tooth bar 3-22 rectilinear motion, three caliper logging arm 3-18 open or closure around bearing pin separately, because three caliper logging arm 3-18 are driven by the same filament thick stick 3-5, so the subtended angle of three caliper logging arm 3-18 is consistent with the folding size, can play the centering centralizing function, has played the effect of setting upright.Wherein, when feed screw nut 3-6 moves up and down at leading screw 3-5, the contact 3-10 that drives on feeler lever 3-9 and the feeler lever 3-9 is moved up and down together, when feed screw nut 3-6 moves to the lower end extreme position, contact 3-10 on the feeler lever 3-9 has touched lower stroke switch 3-7, lower stroke switch 3-7 sends the signal feedback that puts in place and gives down hole processor module 5-5, the control signal that down hole processor module 5-5 output control motor 3-3 stops operating also stops operating by motor-drive circuit module 5-6 control motor 3-3, and feed screw nut 3-6 stops to move downward; When feed screw nut 3-6 moves to the upper end extreme position, contact 3-10 on the feeler lever 3-9 has touched upper stroke switch 3-8, upper stroke switch 3-8 sends the signal feedback that puts in place and gives down hole processor module 5-5, the control signal that down hole processor module 5-5 output control motor 3-3 stops operating also stops operating by motor-drive circuit module 5-6 control motor 3-3, and feed screw nut 3-6 stops to move upward.Be connected with spring on the feeler lever of linear displacement transducer 3-19, the end of spring is connected with contact, under the effect of spring, contact can move with backup spring base 3-14 all the time, the straight line variable quantity of backup spring base 3-14 is become the signal of telecommunication and amplify, export to down hole processor module 5-5 after filter shape and the A/D conversion process by signal acquisition circuit module 5-4, down hole processor module 5-5 carries out analyzing and processing to its signal that receives, and obtains the hole diameter size.
As shown in Figure 8, in the present embodiment, be provided with cross-over block 5-8 between described data processing circuit plate 5-2 and the described gaily decorated basket 5-3.
As shown in Figure 9, in the present embodiment, described down hole processor module 5-5 mainly is made of single-chip microcomputer MSP430F157, comprise a large amount of peripheral modules in the single-chip microcomputer MSP430F157 sheet, itself has powerful hardware resource, RAM, ROM, A/D conversion, D/A conversion, timer, counter, serial communication and a plurality of interrupt source, saved other spending of hardware greatly, saved the exploitation debugging work of a large amount of hardware, improved operating efficiency, reliability, the antijamming capability of system also significantly improve, and make the further miniaturization of system bulk.This single-chip microcomputer has the DMA(direct memory access) function, thereby need not any hardware circuit, do not need the intervention of CPU, can in less space, realize providing the function such as A/D conversion, data processing, master-slave communication, coding transmission of generation, the multiple signals of the sine wave of exciting current; Described signal acquisition circuit module 5-4 is made of the amplifying circuit module 5-41, the filtering shaping circuit module 5-42 that join successively and A/D change-over circuit module 5-43, and described A/D change-over circuit module 5-43 is integrated in described single-chip microcomputer MSP430F157 inside; Described temperature pick up 4-4 is the PN junction temperature pick up, the PN junction temperature pick up is a kind of semiconductor sensor spare, have the advantage separately of thermocouple, RTD and thermistor concurrently, highly sensitive, exchange that error is little, reaction speed is fast, overcome some inherent shortcoming of traditional thermometric device, measurement category can reach-50 ℃～200 ℃; Described pressure sensor 4-5 is piezoresistive pressure sensor, and the media compatibility of piezoresistive pressure sensor is good, and is stable and reliable for performance, the precision height, and standard signal 4mA～20mA output is convenient to simplify amplifying circuit module 5-41 and filtering shaping circuit module 5-42.Because the weak output signal of electromagnetic flowmeter 2 outputs, be easy to be subjected to interference of noise, so when specifically implementing, selected for use the amplifier TLV2252 of low noise precision to form amplifying circuit module 5-41, amplifier TLV2252 is that device is put in the direct coupling of a kind of high-gain, high input resistance and high cmrr, form with differential input, single-ended output, because the circuit structure symmetry, their drift and imbalance have the effect of cancelling each other.
As shown in figure 10, in the present embodiment, described pulse driving circuit module 5-7 comprises chip LM324, polar capacitor C11, resistance R 1, R7, R13, R17, R18 and R19, and diode D6 and D8, the pin 3 of described chip LM324 joins by the output IO1 of resistance R 19 with down hole processor module 5-5, the pin 2 of described chip LM324 joins by the output IO2 of resistance R 18 with down hole processor module 5-5, the pin 1 of described chip LM324, pin 5, pin 10 and pin 12 all join by the pin 2 of resistance R 17 with chip LM324, the pin 6 of described chip LM324 and pin 7 all join by the positive pole of resistance R 13 with polar capacitor C11, the pin 8 of described chip LM324 and pin 9 all join by the positive pole of resistance R 7 with polar capacitor C11, the pin 13 of described chip LM324 and pin 14 all join by the positive pole of resistance R 1 with polar capacitor C11, the negative pole of the positive pole of the positive pole of described polar capacitor C1 and diode D6 and diode D8 joins, the pin 4 of described chip LM324 and the negative pole of diode D6 all join with+10V power supply, the anodal of the pin 11 of described chip LM324 and diode D8 all joins with-10V power supply, and the negative pole of described polar capacitor C11 is the output OUT of described pulse driving circuit module 5-7.Described pulse driving circuit module 5-7 synthesizes the two-way unipolar pulse sign indicating number that down hole processor module 5-5 generates bipolar code and carries out power drive, so that signal can transmit at the communication cable of several kms.Zhuan Huan result like this, the DC component that made in the bipolar pulse sequence of generation cancellation, and also reduced near the component of zero-frequency, this just is being suitable for the transmission characteristic of communication cable.
As shown in figure 11, in the present embodiment, described cable connector 6 comprises the pipe shape round splce 6-1 that is threaded in described data processing equipment pillar 5-1 top and the noose 6-2 that is sleeved on described round splce 6-1 inside, the top of described round splce 6-1 is provided with external screw thread 6-3, external screw thread 6-3 is standby, be connected usefulness with external equipment for this logging instrument, the bottom of described noose 6-2 is threaded and is useful on round splce 6-1 inner space and the separated seal receptacle 6-4 of data processing equipment pillar 5-1, high-voltage plug 6-5 has been threaded on the described seal receptacle 6-4, described gaily decorated basket 5-3 is fixedlyed connected with seal receptacle 6-4, be provided with connector assembly nut 6-6 in the described noose 6-2, connector assembly 6-7 has been threaded on the described connector assembly nut 6-6, on the described connector assembly 6-7 aviation plug 6-8 is installed, is provided with buffer spring 6-9 between described connector assembly 6-7 and the described noose 6-2; The output of described pulse driving circuit module 5-7 is electrically connected with described high-voltage plug 6-5, and described high-voltage plug 6-5 is electrically connected with described aviation plug 6-8, and described aviation plug 6-8 is electrically connected with described communication cable.Cable connector 6 is the tops of whole logging instrument, and main effect is to bear the weight of whole logging instrument and be electrically connected.It is withstand voltage that pipe shape round splce 6-1 mainly plays waterproof.Seal receptacle 6-4 is set can prevents that sealing and moisture enter in the data processing equipment pillar 5-1, corrupt data treatment circuit plate 5-2 has improved the water proofing property of data processing circuit plate 5-2.High-voltage plug 6-5 is made of the conduction copper column insulation tube outer with being sleeved on conduction copper column, make conduction copper column and seal receptacle 6-4 insulation by insulation tube, the signal of telecommunication of data processing circuit plate 5-2 transmission is transferred to aviation plug 6-8 by high-voltage plug 6-5, is transferred to communication cable by aviation plug 6-8 again.Aviation plug 6-8 has and connects characteristics reliable, easy accessibility, can shorten the time that field instrumentation connects.Be provided with buffer spring 6-9 between described connector assembly 6-7 and the described noose 6-2, guaranteed that aviation plug 6-8 reliably is connected with communication cable.
As shown in Figure 9, in the present embodiment, described downhole instrument signal processing circuit 7 is made of the amplification and rectification circuit module 7-1 that joins successively and serial-parallel conversion circuit module 7-2, and described ground based processor module 8 mainly is made of single-chip microcomputer MSP430F1611.
In sum, when adopting the present invention to log well, the underground electromagnetic flow logging instrument is under the centering of centralizer 1 and caliper logging instrument 3 acts on down, along being moved by the well logging center, the startup of down hole processor module 5-5 by motor-drive circuit module 5-6 control motor 3-3, stop, rotating, caliper logging arm 3-18 is opened or closed; When passing through different stratum, electromagnetic flowmeter 2, linear displacement transducer 3-19, temperature pick up 4-4 and pressure sensor 4-5 pass to signal acquisition circuit module 5-4 with its parameter of surveying, the signal of signal acquisition circuit module 5-4 amplifies, export to down hole processor module 5-5 after filter shape and the A/D conversion process, down hole processor module 5-5 is transferred to data on the communication cable by pulse driving circuit module 5-7 again, be transferred to ground observing and controlling system by communication cable again, 7 pairs of data of downhole instrument signal processing circuit are exported to ground based processor module 8 after amplifying shaping and string and conversion process, ground based processor module 8 divides signal road to extract, and forms flow velocity, the well temperature, hole diameter, four curves of pressure reduction; Simultaneously, the signal of photoelectric encoder 10 outputs is also exported to ground based processor module 8, ground based processor module 8, by judging high-low level and pulse signals counting, calculate the uplink and downlink of underground electromagnetic flow logging instrument and the current degree of depth, by calculating the translational speed that the degree of depth that underground electromagnetic flow logging instrument per second moves is calculated, form rate curve, five curves are so just arranged, be transferred to industrial control computer 9, store, show and printing, read lane database at industrial control computer 9 usefulness flow rate log interpretation softwares at last and come analysis interpretation to calculate, form flow rate log interpretation results table at last.
The above; it only is preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, every any simple modification, change and equivalent structure of above embodiment being done according to the technology of the present invention essence changes, and all still belongs in the protection domain of technical solution of the present invention.
Claims (10)
1. small-bore Electromagnetic Flow comprehensive logging instrument, it is characterized in that: comprise the underground electromagnetic flow logging instrument that is arranged on the down-hole and the ground observing and controlling system that arranges on the ground and be connected and communicate by letter by communication cable and underground electromagnetic flow logging instrument, described underground electromagnetic flow logging instrument comprises the following centralizer (1) that arranges from top to bottom successively, electromagnetic flowmeter (2), caliper logging instrument (3), pressure and temperature measuring equipment (4), data processing equipment (5) and cable connector (6), described ground observing and controlling system comprises for the cable reel that connects communication cable, be used for image data treating apparatus (5) and handle the downhole instrument signal processing circuit (7) of the downhole instrument signal that obtains, the ground based processor module (8) of joining with downhole instrument signal processing circuit (7) and the industrial control computer (9) that joins with ground based processor module (8), the photoelectric encoder (10) that detects for the speed to the underground electromagnetic flow logging instrument is installed on the described cable reel, and described photoelectric encoder (10) joins with described ground based processor module (8);
Described centralizer (1) down comprises righting rod (1-1), be connected the guide head (1-2) of described righting rod (1-1) bottom and be arranged on described righting rod (1-1) centre position place and match constituted diameter can be with a plurality of spring leafs (1-3) of setting upright of the elastic waist drum shape of well radius variations, be symmetrically arranged with two righting mechanisms that can slide at righting rod (1-1) and two on the described righting rod (1-1) and be respectively applied to the sliding position of two righting mechanisms on righting rod (1-1) carried out spacing interstage sleeve (1-4), the described two ends of setting upright spring leaf (1-3) are hinged with two described righting mechanisms respectively; The bottom of described electromagnetic flowmeter (2) is threaded with the described top of righting rod (1-1) down;
Described caliper logging instrument (3) comprises caliper logging instrument pillar (3-1) and is sleeved on the inner interior pipe (3-2) of described caliper logging instrument pillar (3-1), and caliper logging mechanism, be used for to promote the recline backup mechanism and being used for of the borehole wall of described caliper logging mechanism and drive the actuating unit of described backup mechanism, described actuating unit comprises motor (3-3), the reductor (3-4) that joins with motor (3-3) output shaft, the leading screw (3-5) that joins with reductor (3-4) output shaft and be threaded in feed screw nut (3-6) on the described leading screw (3-5), in described on the inwall of pipe (3-2) fixedly connected being useful on feed screw nut (3-6) is moved to the lower stroke switch (3-7) that the lower end extreme position detects and is used for feed screw nut (3-6) is moved to the upper stroke switch (3-8) that the upper end extreme position detects at leading screw (3-5), be fixedly connected with feeler lever (3-9) on the described feed screw nut (3-6), be fixedly connected with the contact (3-10) that matches with described upper stroke switch (3-8) and lower stroke switch (3-7) on the described feeler lever (3-9), the fixedly connected motor cabinet (3-11) that described reductor (3-4) and motor (3-3) are installed that is useful in the top of pipe (3-2) in described, on the inwall of pipe (3-2) bearing support (3-12) is installed in described, is equipped with in the described bearing support (3-12) for the bearing (3-13) that supports described leading screw (3-5); Described backup mechanism comprise be sleeved on described in the inner backup spring base (3-14) of pipe (3-2), the top of described backup spring base (3-14) is fixedly connected with many and reaches described feed screw nut (3-6) side and can withstand on backup spring (3-15) on the described feeler lever (3-9), and the bottom of described backup spring base (3-14) is fixedly connected with connecting axle (3-16); Described caliper logging mechanism comprise and described in the caliper logging knee-joint head (3-17) that is threaded of pipe (3-2) bottom, evenly be hinged on the many caliper logging arms (3-18) on the described caliper logging knee-joint head (3-17) and be fixedly connected on that interior pipe (3-2) is gone up and be used for the linear displacement transducer (3-19) that the straight-line displacement amount to backup spring base (3-14) detects, gear (3-20) all is installed on the every described caliper logging arm (3-18), the bottom thread of described connecting axle (3-16) is connected with tooth bar mount pad (3-21), and the many corresponding tooth bars (3-22) that match with a plurality of described gears (3-20) respectively are installed on the described tooth bar mount pad (3-21);
Described pressure and temperature measuring equipment (4) comprise the transition joint (4-1) of column, described transition joint (4-1) inside is provided with the cavity (4-2) of column, described transition joint (4-1) is provided with the intake-outlet (4-3) that supplies water and flow into cavity (4-2) or flow out cavity (4-2), and the inner two ends of described cavity (4-2) are respectively arranged with temperature pick up (4-4) and pressure sensor (4-5); The bottom of described transition joint (4-1) is threaded with described caliper logging instrument pillar (3-1);
Described data processing equipment (5) comprises data processing equipment pillar (5-1) and is arranged on the inner data processing circuit plate (5-2) of data processing equipment pillar (5-1) and is used for the gaily decorated basket (5-3) of installation data treatment circuit plate (5-2), the bottom of described data processing equipment pillar (5-1) is threaded with described transition joint (4-1), the down hole processor module (5-5) that is laid with signal acquisition circuit module (5-4) on the described data processing circuit plate (5-2) and joins with signal acquisition circuit module (5-4), and motor-drive circuit module (5-6) and the pulse driving circuit module (5-7) of joining with described down hole processor module (5-5), described electromagnetic flowmeter (2), linear displacement transducer (3-19), temperature pick up (4-4) and pressure sensor (4-5) all join with described signal acquisition circuit module (5-4), described upper stroke switch (3-8) and lower stroke switch (3-7) all join with described down hole processor module (5-5), described motor (3-3) joins with described motor-drive circuit module (5-6), and described communication cable joins by cable connector (6) and described pulse driving circuit module (5-7).
2. according to the described small-bore Electromagnetic Flow comprehensive logging instrument of claim 1, it is characterized in that: described righting mechanism comprises the inner spring seat (1-5) that is sleeved on the described righting rod (1-1) and the outer spring seat (1-6) that is threaded with described inner spring seat (1-5), described outer spring seat (1-6) matches with inner spring seat (1-5) and has formed a plurality of hinge holes (1-7), a plurality of described ends of setting upright spring leaf (1-3) a plurality of hinge holes (1-7) on corresponding and one of them described righting mechanism respectively are hinged, and a plurality of described other ends of setting upright spring leaf (1-3) a plurality of hinge holes (1-7) on corresponding and another described righting mechanism respectively are hinged.
3. according to the described small-bore Electromagnetic Flow comprehensive logging instrument of claim 2, it is characterized in that: the described spring leaf (1-3) of setting upright is arcuate bombing leaf, the described quantity of setting upright spring leaf (1-3) is three, and the quantity of the hinge hole (1-7) on corresponding each described righting mechanism is three.
4. according to the described small-bore Electromagnetic Flow comprehensive logging instrument of claim 1, it is characterized in that: described gear (3-20) is for semicircle, the quantity of described caliper logging arm (3-18) is three, the quantity of corresponding described gear (3-20) is three, and the quantity of corresponding described tooth bar (3-22) is three.
5. according to the described small-bore Electromagnetic Flow comprehensive logging instrument of claim 1, it is characterized in that: have gathering sill (3-23) on the pipe (3-2) in described, be fixedly connected with the guiding feather key (3-24) that matches with gathering sill (3-23) on the described feed screw nut (3-6), the bottom of described tooth bar mount pad (3-21) is connected with sleeve pipe (11), be fixedly connected with electromagnetic flowmeter joint (12) on the described sleeve pipe (11), the top of described electromagnetic flowmeter (2) is threaded with described electromagnetic flowmeter joint (12).
6. according to the described small-bore Electromagnetic Flow comprehensive logging instrument of claim 1, it is characterized in that: be provided with cross-over block (5-8) between described data processing circuit plate (5-2) and the described gaily decorated basket (5-3).
7. according to the described small-bore Electromagnetic Flow comprehensive logging instrument of claim 1, it is characterized in that: described down hole processor module (5-5) mainly is made of single-chip microcomputer MSP430F157, described signal acquisition circuit module (5-4) is made of the amplifying circuit module (5-41) of joining successively, filtering shaping circuit module (5-42) and A/D change-over circuit module (5-43), and described A/D change-over circuit module (5-43) is integrated in described single-chip microcomputer MSP430F157 inside; Described temperature pick up (4-4) is PN junction temperature pick up (4-4), and described pressure sensor (4-5) is piezoresistive pressure sensor (4-5).
8. according to the described small-bore Electromagnetic Flow comprehensive logging instrument of claim 1, it is characterized in that: described pulse driving circuit module (5-7) comprises chip LM324, polar capacitor C11, resistance R 1, R7, R13, R17, R18 and R19, and diode D6 and D8, the pin 3 of described chip LM324 joins by the output IO1 of resistance R 19 with down hole processor module (5-5), the pin 2 of described chip LM324 joins by the output IO2 of resistance R 18 with down hole processor module (5-5), the pin 1 of described chip LM324, pin 5, pin 10 and pin 12 all join by the pin 2 of resistance R 17 with chip LM324, the pin 6 of described chip LM324 and pin 7 all join by the positive pole of resistance R 13 with polar capacitor C11, the pin 8 of described chip LM324 and pin 9 all join by the positive pole of resistance R 7 with polar capacitor C11, the pin 13 of described chip LM324 and pin 14 all join by the positive pole of resistance R 1 with polar capacitor C11, the negative pole of the positive pole of the positive pole of described polar capacitor C1 and diode D6 and diode D8 joins, the pin 4 of described chip LM324 and the negative pole of diode D6 all join with+10V power supply, the anodal of the pin 11 of described chip LM324 and diode D8 all joins with-10V power supply, and the negative pole of described polar capacitor C11 is the output OUT of described pulse driving circuit module (5-7).
9. according to the described small-bore Electromagnetic Flow comprehensive logging instrument of claim 1, it is characterized in that: described cable connector (6) comprises the pipe shape round splce (6-1) that is threaded in described data processing equipment pillar (5-1) top and is sleeved on the inner noose (6-2) of described round splce (6-1), the top of described round splce (6-1) is provided with external screw thread (6-3), the bottom of described noose (6-2) is threaded and is useful on round splce (6-1) inner space and the separated seal receptacle of data processing equipment pillar (5-1) (6-4), high-voltage plug (6-5) has been threaded on the described seal receptacle (6-4), the described gaily decorated basket (5-3) is fixedlyed connected with seal receptacle (6-4), be provided with connector assembly nut (6-6) in the described noose (6-2), connector assembly (6-7) has been threaded on the described connector assembly nut (6-6), aviation plug (6-8) is installed on the described connector assembly (6-7), is provided with buffer spring (6-9) between described connector assembly (6-7) and the described noose (6-2); The output of described pulse driving circuit module (5-7) is electrically connected with described high-voltage plug (6-5), and described high-voltage plug (6-5) is electrically connected with described aviation plug (6-8), and described aviation plug (6-8) is electrically connected with described communication cable.
10. according to the described small-bore Electromagnetic Flow comprehensive logging instrument of claim 1, it is characterized in that: described downhole instrument signal processing circuit (7) is made of the amplification and rectification circuit module (7-1) of joining successively and serial-parallel conversion circuit module (7-2), and described ground based processor module (8) mainly is made of single-chip microcomputer MSP430F1611.
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