CN103940702B - A kind of shaft bottom mud yield value measuring instrument and measuring method - Google Patents
A kind of shaft bottom mud yield value measuring instrument and measuring method Download PDFInfo
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- 238000005553 drilling Methods 0.000 claims abstract description 35
- 238000005259 measurement Methods 0.000 claims abstract description 21
- 210000002445 Nipples Anatomy 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 239000002002 slurry Substances 0.000 claims abstract description 10
- 238000005086 pumping Methods 0.000 claims abstract description 4
- 238000003860 storage Methods 0.000 claims description 27
- 239000000696 magnetic material Substances 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 5
- 102000010637 Aquaporins Human genes 0.000 claims description 4
- 108010063290 Aquaporins Proteins 0.000 claims description 4
- 101700062586 CHA1 Proteins 0.000 claims description 3
- 101700054578 DDM1 Proteins 0.000 claims description 3
- 241000690470 Plantago princeps Species 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 239000000565 sealant Substances 0.000 claims description 3
- 238000009827 uniform distribution Methods 0.000 claims description 3
- 241001074085 Scophthalmus aquosus Species 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 239000002775 capsule Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000518 rheometry Methods 0.000 description 2
- 230000002457 bidirectional Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
A kind of shaft bottom mud yield value measuring instrument, comprises and measures pipe nipple, monitoring means and host computer, measures pipe nipple and is made up of main cylinder, withstand voltage bearing, preloading spring, rotor, annular seal space, seal cover board; Monitoring means is arranged in the annular seal space of main cylinder, by seal cover board and covers sealing; Host computer is communicated to connect by VISA interface and monitoring means; The method that mud pressure measured by measuring instrument is that measurement pipe nipple is arranged on drilling rod junction, position at the bottom of the hole that will measure is transferred to drilling rod, when carrying out shaft bottom mud yield value and detecting, stop pumping mud, drilling rod is promoted slightly, rotate according to fixed rotating speed, rotor rotates by the effect of mud yield value, measure the relative velocity of main cylinder and rotor, monitoring means record data are also preserved, open after carrying brill and take off measurement pipe nipple, open annular seal space and obtain the data upload of monitoring means to host computer, host computer playback shows.The present invention, by directly measuring the change of mud yield value data, adjusts simulated mud in time, optimizes on-site slurry.
Description
Technical field
The present invention relates to gather and at the bottom of storage well near drill bit place mud yield value delta data to adjust in time the instrument of mud prescription, be specifically related to a kind of shaft bottom mud yield value measuring instrument and measuring method.
Background technology
Geological drilling relates to national all trades and professions of building, in geologic prospecting, oil and gas development, building foundation etc., only carry out reliable geologic information arrangement, could offer help for later development construction, along with the scarcity of resource, drilling depth is also in continuous increase, and drilling safety problem is more outstanding.The increase of the degree of depth causes mud pressure, there is great variety in mud temperature etc., the performance of mud also can change, and the mud of sex change causes the stability on stratum to receive impact, very easily bring out borehole collapse, the appearance of the problem such as drilling rod is held tightly, burning of bits, cause drilling failure and property loss.By the change of mud yield value in depths at the bottom of timely monitor well, mud can be obtained and hang slag, the indexs such as pumpability.So just can revise mud prescription in time, add suitable treating agent and ensure the stable of mud property, ensure the safety of boring.Under drilling fluid rheology energy checkout equipment conventional at present is often confined to laboratory environment, varying with landing surface in actual boring procedure, mud property change is also unpredictable, traditional experiment room formula cannot meet the needs of on-the-spot allotment, often can not solve the stochastic problem occurred in on-the-spot drilling process.
Summary of the invention
The technical problem to be solved in the present invention is, for existing drilling fluid rheology energy checkout equipment above shortcomings, a kind of shaft bottom mud yield value measuring instrument and measuring method are provided, by directly measuring the change of the mud yield value data be positioned near the drill bit of shaft bottom, timely adjustment simulated mud, and then the field optimizing realized mud, and provide more direct reference data.
The present invention for solving the problems of the technologies described above adopted technical scheme is:
A kind of shaft bottom mud yield value measuring instrument, comprise and measure pipe nipple, monitoring means and host computer, described measurement pipe nipple is made up of main cylinder, withstand voltage bearing, preloading spring, rotor, annular seal space, seal cover board, the two ends up and down of main cylinder are respectively equipped with pipe thread, the pipe thread of upper end is internal thread, and the pipe thread of lower end is external thread; Rotor is arranged on the axis of main cylinder inside, rotor by withstand voltage bearing and main cylinder coaxial positioning, be inlaid with the uniform distribution at equal intervals of magnetic material, magnetic material outside rotor; The end face of withstand voltage bearing is provided with preloading spring by gasket for transition, and the bottom of preloading spring is provided with the nut for adjusting its degree of tightness, and preloading spring is used for applying certain friction force to rotor; Main cylinder inside is provided with the water channel passed through for mud; Annular seal space is arranged on the outside in the middle part of main cylinder, seal cover board sealing cover annular seal space outside, prevent slurries from entering wherein, seal cover board is installed sealing gasket, smear fluid sealant after be bolted on main cylinder;
Described monitoring means is arranged in the annular seal space of main cylinder, by seal cover board and covers sealing; Monitoring means is made up of power-supply circuit, rotating speed measuring sensor, microprocessor, data acquisition circuit, data storage circuitry, datamanipulation circuit: described power-supply circuit adopts LM1117-5.0V and LM1117-3.3V chip, for system provides stable+5.0V power supply, + 3.3V power supply, the stabilized supply voltage of 0V; Described rotating speed measuring sensor is fixedly mounted on the screw thread of annular seal space inside; Described microprocessor adopts STC89C516RD+ chip, STC89C516RD+ chip is connected with data acquisition circuit by ALE, P2.0, P2.1, P2.2, P2.3, P2.4, P2.7, P0 port, be connected with datamanipulation circuit by P3.0, P3.1 port, pass through P1.0, P1.1, P1.2, P1.3, P1.4 port is connected with data storage circuitry; Described data acquisition circuit adopts ADS8365 chip, and ADS8365 chip is connected with rotating speed measuring sensor by CHA1+ with CHA1-port, and the simulating signal of collection is converted to digital signal by ADS8365 chip, and parallel mode sends microprocessor to; Described data storage circuitry adopts SD card, and the pin 1 of SD card, pin 2, pin 3, pin 5, pin 7, pin 8 are connected to+3.3V power supply respectively by resistance R6, R5, R4, R3, R2, R1, and the pin 4 of SD card directly connects+3.3V power supply simultaneously, and pin 6 directly connects power supply ground; Described datamanipulation circuit adopts MAX232 chip, and the pin 9 of MAX232 chip is connected microprocessor with pin 10, and pin 16 connects+5.0V power supply;
Described host computer is communicated to connect by VISA interface and monitoring means, host computer comprises identification link block, signal connects pilot lamp, parameter display module, data upload module, data removing module, data storage module, storing path module, false alarm module, download progress module, instruction monitoring module, curve display module; Described identification link block is connected with monitoring means, for selecting port and parameter; Whether signal connects pilot lamp and is connected with monitoring means for showing host computer; Parameter display module is for showing serial ports Connecting quantity; Data upload module makes measuring instrument uploading data to host computer for sending instruction; Data removing module makes measuring instrument delete data for sending instruction; Data storage module is for preserving the data in host computer buffer memory; Storing path module is for the path of selecting data to preserve and title; False alarm module is used for display measurement instrument uploading data whether mess code; Download progress module is used for the progress that display measurement instrument uploads to host computer data; The response instruction that instruction monitoring module returns for the instruction and measuring instrument showing transmission; Curve display module is used for the change graph curve that display measurement instrument uploads to host computer data.
By such scheme, described rotor is that cylindrical light is trackslipped cylinder.
Described measurement pipe nipple is connected with upper square kelly by the internal thread of upper end, the external thread of lower end is connected with lower square kelly, internal thread, external thread is standard drill pipe pipe thread, the passage that main cylinder inside has mud to pass through, ensure the flowing of mud, rotor is positioned by single-ended withstand voltage bearing, rotor is axially divided into fan-shaped at equal intervals by the magnetic material that rotor surface is inlayed, preloading spring provides certain friction force for rotor, to ensure that the relative speed difference of rotor and main cylinder when dallying is for zero, relative velocity is produced when running into liquid yield value, main cylinder inwall and rotor outer wall are all cylindrical light sliding surfaces, annular seal space opening outwardly, do not penetrate drilling rod, annular seal space inside is provided with the screw thread for fixed rotating speed survey sensor, seal cover board is in the arc-shaped, cover outside main cylinder, protection pressurized capsule is not by slurry compounding.
The power-supply circuit of described monitoring means provides stable voltage support for system, comprises+5.0V ,+3.3V; Rotating speed measuring sensor is for measuring the relative speed difference of rotor and main cylinder; Microprocessor provides computing and operation; The signal that data acquisition circuit records for gathering rotating speed measuring sensor, is converted to digital quantity; The data that data storage circuitry collects for storing rotating speed measuring sensor, packing is saved on SD card; Datamanipulation circuit provides data cube computation for microprocessor and computing machine, ensures the two-way communication of microprocessor and computing machine.
The present invention also provides a kind of method utilizing above-mentioned shaft bottom mud yield value measuring instrument to measure mud yield value, specifically comprises the steps:
(1) rig in use finds that returning slurry performance inconsistency fits, creep into torque parameter abnormal, drilling rod is mentioned, select from the suitable position of hole subdrilling head, measurement pipe nipple is arranged between upper and lower drilling rod, monitoring means is arranged in the annular seal space of main cylinder, open the starting switch on monitoring means, timing starts, and is arranged in groove by sealing gasket, then installs seal cover board, under ensureing the reliable situation of sealing, drilling rod is put into hole successively, and measuring instrument automatic data collection after timing starts 2 hours is preserved, and can not quit work afterwards;
(2) when mud yield value measured by needs time, stop creeping into, stop pumping mud, drilling rod is mentioned and makes it unsettled;
(3) start rig, ensure drilling rod uniform rotation according to fixing rotating speed;
(4) inner monitoring means is by gathering the speed discrepancy of rotor and main cylinder, and the yield value of record mud changes, and the data collected are packaged into set form by microprocessor and are stored on SD card, constantly updates inner data;
(5) when needing to check data, drilling rod is mentioned, take out and measure pipe nipple, take off seal cover board, take off monitoring means, be connected by monitoring means by data line with computer, host computer is by data upload module display data change curve and mud yield value change curve, data are preserved, by selecting data removing module erasing internal data to continue next time to use by data storage module.
Shaft bottom of the present invention mud yield value measuring instrument and measuring method tool have the following advantages:
1, shaft bottom of the present invention mud yield value measuring instrument structure is simple, measure pipe nipple to be connected up and down with geologic drilling rod, transfer to the predetermined depth of boring together with drilling rod, realize the yield value of measuring well bottom slurry, without the need to on-the-spot complicated experimental implementation, do not affect construction speed;
2, shaft bottom of the present invention mud yield value measuring method is based on the test of mud rotary cutting principle of dynamics, and acquisition method is feasible, the data shown by host computer and image spot adjustment mud prescription; Be applied to the shaft bottom mud Performance Detection of situ of drilling well, nothing simple to operation is dangerous, gathers, be stored on built-in SD card to shaft bottom mud real-time performance parameter, and data readback can the change finding out mud property of image and the part of needs adjustment.
Accompanying drawing explanation
Fig. 1 is the structure schematic front view of the measurement pipe nipple of shaft bottom of the present invention mud yield value measuring instrument;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the monitoring means circuit diagram of shaft bottom of the present invention mud yield value measuring instrument;
In figure, the main cylinder of 1-, 2-rotor, 3-magnetic material, 4-is withstand voltage bearing, 5-water channel, 6-external thread, 7-nut, 8-preloading spring, 9-pad, 10-annular seal space, 11-seal cover board, 12-internal thread.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
With reference to shown in Fig. 1 ~ Fig. 3, shaft bottom of the present invention mud yield value measuring instrument, comprise and measure pipe nipple, monitoring means and host computer, described measurement pipe nipple is made up of main cylinder 1, withstand voltage bearing 4, preloading spring 8, rotor 2, annular seal space 10, seal cover board 11, the two ends up and down of main cylinder 1 are respectively equipped with pipe thread (two ends up and down of main cylinder 1 are connected with upper and lower drilling rod respectively by pipe thread), the pipe thread of upper end is internal thread 12(box thread), the pipe thread of lower end is external thread 6(male thread); Rotor 2 is arranged on the axis of main cylinder 1 inside, rotor 2 by withstand voltage bearing 4 and main cylinder 1 coaxial positioning, be inlaid with the uniform distribution at equal intervals of magnetic material 3, magnetic material 3 outside rotor 2; The end face of withstand voltage bearing 4 is provided with preloading spring 8 by pad 9 transition, and the bottom of preloading spring 8 is provided with the nut 7 for adjusting its degree of tightness, and preloading spring 8 applies certain friction force (providing resistance) for giving rotor 2; Main cylinder 1 inside is provided with the water channel 5 passed through for mud; Annular seal space 10 is arranged on the outside in the middle part of main cylinder 1, seal cover board 11 sealing cover annular seal space 10 outside, prevent slurries from entering wherein, seal cover board 11 is installed sealing gasket, smear fluid sealant after be bolted on main cylinder 1; During measurement, mud can be passed through in main cylinder 1 inside, in the ring cavity of mud between main cylinder 1 and rotor 2, also rotor driven 2 rotates, the change of magnetic material 3 magnetic that the rotating speed measuring sensor of monitoring means is embedded above detection rotor 2 in annular seal space 10, obtains speed and angle in relative rotation then;
Described monitoring means is a microprocessor operating system, is arranged in the annular seal space 10 of main cylinder 1, covers sealing by seal cover board 11; Monitoring means is made up of power-supply circuit, rotating speed measuring sensor, microprocessor, data acquisition circuit, data storage circuitry, datamanipulation circuit: described power-supply circuit adopts LM1117-5.0V and LM1117-3.3V chip, for system provides stable+5.0V power supply, + 3.3V power supply, the stabilized supply voltage of 0V; Described rotating speed measuring sensor is fixedly mounted on (rotating speed measuring sensor points to rotor 2 and measures) on the screw thread of annular seal space 10 inside; Described microprocessor adopts STC89C516RD+ chip, STC89C516RD+ chip is connected with data acquisition circuit by ALE, P2.0, P2.1, P2.2, P2.3, P2.4, P2.7, P0 port, be connected with datamanipulation circuit by P3.0, P3.1 port, pass through P1.0, P1.1, P1.2, P1.3, P1.4 port is connected with data storage circuitry; Described data acquisition circuit adopts ADS8365 chip, and ADS8365 chip is connected with rotating speed measuring sensor by CHA1+ with CHA1-port, and the simulating signal of collection is converted to digital signal by ADS8365 chip, and parallel mode sends microprocessor to; Described data storage circuitry adopts SD card, and the pin 1 of SD card, pin 2, pin 3, pin 5, pin 7, pin 8 are connected to+3.3V power supply respectively by resistance R6, R5, R4, R3, R2, R1, and the pin 4 of SD card directly connects+3.3V power supply simultaneously, and pin 6 directly connects power supply ground; Described datamanipulation circuit adopts MAX232 chip, and the pin 9 of MAX232 chip is connected microprocessor with pin 10, and pin 16 connects+5.0V power supply;
Described host computer is communicated to connect by VISA interface and monitoring means, host computer adopts the establishment of Labview8.5 visual software, comprise and identify that link block, signal connect pilot lamp, parameter display module, data upload module, data removing module, data storage module, storing path module, false alarm module, download progress module, instruction monitoring module, curve display module; Described identification link block is connected with monitoring means, for selecting port and parameter; Whether signal connects pilot lamp and is connected with monitoring means for showing host computer; Parameter display module is for showing serial ports Connecting quantity; Data upload module makes measuring instrument uploading data to host computer for sending instruction; Data removing module makes measuring instrument delete data for sending instruction; Data storage module is for preserving the data in host computer buffer memory; Storing path module is for the path of selecting data to preserve and title; False alarm module is used for display measurement instrument uploading data whether mess code; Download progress module is used for the progress that display measurement instrument uploads to host computer data; The response instruction that instruction monitoring module returns for the instruction and measuring instrument showing transmission; Curve display module is used for the change graph curve that display measurement instrument uploads to host computer data.Described host computer can show the change of data continuously, data from monitoring means (microprocessor) realize calling and preserving by data upload module and data storage module, the quantification file of the file that data storage module is preserved survey to by measuring instrument mud yield value, data removing module is used for the disposable operation of experimental apparatus storage inside module, identifies that link block is used for directly choosing communication interface and pattern.
Described rotor 2 is demarcate the cylindrical light of size to trackslip cylinder.
Described measurement pipe nipple is connected with upper square kelly by the internal thread 12 of upper end, the external thread 6 of lower end is connected with lower square kelly, internal thread 12, external thread 6 is standard drill pipe pipe thread, the water channel 5 that main cylinder 1 inside is arranged, ensure the flowing of mud, rotor 2 is positioned by single-ended withstand voltage bearing 4, rotor 2 is axially divided into fan-shaped at equal intervals by the magnetic material 3 of rotor 2 surface inserting, preloading spring 8 provides certain friction force for rotor 2, to ensure that the relative speed difference of rotor 2 and main cylinder 1 when dallying is for zero, relative velocity is produced when running into liquid yield value, main cylinder 1 inwall and rotor 2 outer wall are all cylindrical light sliding surfaces, annular seal space 10 opening outwardly, do not penetrate drilling rod, annular seal space 10 inside is provided with the screw thread for fixed rotating speed survey sensor, seal cover board 11 is in the arc-shaped, cover outside main cylinder 1, protection pressurized capsule is not by slurry compounding.
The power-supply circuit of described monitoring means provides stable voltage support for system, comprises+5.0V ,+3.3V; Rotating speed measuring sensor is for measuring the relative speed difference of rotor and main cylinder; Microprocessor provides computing and operation; The signal that data acquisition circuit records for gathering rotating speed measuring sensor, is converted to digital quantity; The data that data storage circuitry collects for storing rotating speed measuring sensor, packing is saved on SD card; Datamanipulation circuit provides data cube computation for microprocessor and computing machine, ensures the two-way communication of microprocessor and computing machine.
Power convert is+5.0V voltage by two LM1117-5.0 chips by power-supply circuit, positive source connects the pin 3 of chip LM1117-5.0 chip, indirect electric capacity Cs1 and Cs2 of pin 1 and pin 3, burning voltage, prevent torrent, LM1117-5.0 chip pin 2 connects the pin 3 of chip LM1117-3.3, pin 2 output voltage+3.3V, the pin 1 of chip LM1117-3.3 and pin 2 connect electric capacity C1 burning voltage, and all chips are common source ground all; Miniature processor circuit adopts chip STC89C516RD+ chip, pin 29, and pin 38 meets voltage+5.0V, pin 16 connects power supply ground, pin 4 connects the RC reset circuit that electric capacity C3 and R21 forms, and pin 15 and pin 16 connect crystal oscillating circuit, and pin 5 and pin 7 connect datamanipulation circuit, pin 1-3 and pin 12-14 connects data storage circuitry, pin 20-22, pin 25, pin 27, pin 30-37 connects data acquisition circuit, is sent on data storage circuitry after the data preparation process that data acquisition circuit is uploaded by STC89C516RD+ chip; Data acquisition circuit adopts chip ADS8365 ,+the 3.3V that supply voltage adopts power-supply circuit to provide, and the analog quantity of rotating speed measuring sensor is converted to the digital quantity of 16; Datamanipulation circuit adopts MAX232 chip, pin 9 is connected miniature processor circuit with pin 10, the Transistor-Transistor Logic level of microprocessor is converted to 232 level, connects host computer by serial ports, host computer is by MAX232 chip and processor communication, and communication mode is serial bidirectional mode; Data storage circuitry adopts SD card, and because the power supply of SD card is 3.3V, therefore need pin 1-5, pin 7, pin 8 draws high voltage to 3.3V by resistance, and communication mode adopts SPI pattern, and data according to fixed format write in SD card sector successively, completes data and preserves.
The present invention utilizes above-mentioned shaft bottom mud yield value measuring instrument to measure the method for mud yield value, specifically comprises the steps:
(1) rig in use finds that returning slurry performance inconsistency fits, creep into torque parameter abnormal, drilling rod is mentioned, select from the suitable position of hole subdrilling head, measurement pipe nipple is arranged between upper and lower drilling rod, monitoring means (including rotating speed measuring sensor) is arranged in the annular seal space of main cylinder, open the starting switch on monitoring means, timing starts, sealing gasket is arranged in groove, install seal cover board again, under ensureing the reliable situation of sealing, drilling rod is put into hole successively, measuring instrument automatic data collection after timing starts 2 hours is preserved, can not quit work afterwards,
(2) when mud yield value measured by needs time, stop creeping into, stop pumping mud, drilling rod is mentioned and makes it unsettled;
(3) start rig, ensure drilling rod uniform rotation according to fixing rotating speed;
(4) inner monitoring means is by gathering the speed discrepancy of rotor and main cylinder, and the yield value of record mud changes, and the data collected are packaged into set form by microprocessor and are stored on SD card, constantly updates inner data;
(5) when needing to check data, drilling rod is mentioned, take out and measure pipe nipple, take off seal cover board, take off monitoring means, be connected by monitoring means by data line with computer, host computer is by data upload module display data change curve and mud yield value change curve, data are preserved, by selecting data removing module erasing internal data to continue next time to use by data storage module.
Above content is the further description done the present invention in conjunction with concrete preferred implementation, can not assert that specific embodiment of the invention is confined to these explanations.For the those of ordinary skill of technical field of the present invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, said structure all should be included within protection scope of the present invention.
Claims (3)
1. a shaft bottom mud yield value measuring instrument, it is characterized in that: comprise and measure pipe nipple, monitoring means and host computer, described measurement pipe nipple is made up of main cylinder, withstand voltage bearing, preloading spring, rotor, annular seal space, seal cover board, the two ends up and down of main cylinder are respectively equipped with pipe thread, the pipe thread of upper end is internal thread, and the pipe thread of lower end is external thread; Rotor is arranged on the axis of main cylinder inside, rotor by withstand voltage bearing and main cylinder coaxial positioning, be inlaid with the uniform distribution at equal intervals of magnetic material, magnetic material outside rotor; The end face of withstand voltage bearing is provided with preloading spring by gasket for transition, and the bottom of preloading spring is provided with the nut for adjusting its degree of tightness, and preloading spring is used for applying certain friction force to rotor; Main cylinder inside is provided with the water channel passed through for mud; Annular seal space is arranged on the outside in the middle part of main cylinder, seal cover board sealing cover annular seal space outside, prevent slurries from entering wherein, seal cover board is installed sealing gasket, smear fluid sealant after be bolted on main cylinder;
Described monitoring means is arranged in the annular seal space of main cylinder, by seal cover board and covers sealing; Monitoring means is made up of power-supply circuit, rotating speed measuring sensor, microprocessor, data acquisition circuit, data storage circuitry, datamanipulation circuit: described power-supply circuit adopts LM1117-5.0V and LM1117-3.3V chip, for system provides stable+5.0V power supply, + 3.3V power supply, the stabilized supply voltage of 0V; Described rotating speed measuring sensor is fixedly mounted on the screw thread of annular seal space inside; Described microprocessor adopts STC89C516RD+ chip, STC89C516RD+ chip is connected with data acquisition circuit by ALE, P2.0, P2.1, P2.2, P2.3, P2.4, P2.7, P0 port, be connected with datamanipulation circuit by P3.0, P3.1 port, pass through P1.0, P1.1, P1.2, P1.3, P1.4 port is connected with data storage circuitry; Described data acquisition circuit adopts ADS8365 chip, and ADS8365 chip is connected with rotating speed measuring sensor by CHA1+ with CHA1-port, and the simulating signal of collection is converted to digital signal by ADS8365 chip, and parallel mode sends microprocessor to; Described data storage circuitry adopts SD card, and the pin 1 of SD card, pin 2, pin 3, pin 5, pin 7, pin 8 are connected to+3.3V power supply respectively by resistance R6, R5, R4, R3, R2, R1, and the pin 4 of SD card directly connects+3.3V power supply simultaneously, and pin 6 directly connects power supply ground; Described datamanipulation circuit adopts MAX232 chip, and the pin 9 of MAX232 chip is connected microprocessor with pin 10, and pin 16 connects+5.0V power supply;
Described host computer is communicated to connect by VISA interface and monitoring means, host computer comprises identification link block, signal connects pilot lamp, parameter display module, data upload module, data removing module, data storage module, storing path module, false alarm module, download progress module, instruction monitoring module, curve display module; Described identification link block is connected with monitoring means, for selecting port and parameter; Whether signal connects pilot lamp and is connected with monitoring means for showing host computer; Parameter display module is for showing serial ports Connecting quantity; Data upload module makes measuring instrument uploading data to host computer for sending instruction; Data removing module makes measuring instrument delete data for sending instruction; Data storage module is for preserving the data in host computer buffer memory; Storing path module is for the path of selecting data to preserve and title; False alarm module is used for display measurement instrument uploading data whether mess code; Download progress module is used for the progress that display measurement instrument uploads to host computer data; The response instruction that instruction monitoring module returns for the instruction and measuring instrument showing transmission; Curve display module is used for the change graph curve that display measurement instrument uploads to host computer data.
2. shaft bottom according to claim 1 mud yield value measuring instrument, is characterized in that: described rotor is that cylindrical light is trackslipped cylinder.
3. utilize the shaft bottom mud yield value measuring instrument described in the claims 1 or 2 to measure a method for mud yield value, it is characterized in that: specifically comprise the steps:
(1) rig in use finds that returning slurry performance inconsistency fits, creep into torque parameter abnormal, drilling rod is mentioned, select from the suitable position of hole subdrilling head, measurement pipe nipple is arranged between upper and lower drilling rod, monitoring means is arranged in the annular seal space of main cylinder, open the starting switch on monitoring means, timing starts, and is arranged in groove by sealing gasket, then installs seal cover board, under ensureing the reliable situation of sealing, drilling rod is put into hole successively, and measuring instrument automatic data collection after timing starts 2 hours is preserved, and can not quit work afterwards;
(2) when mud yield value measured by needs time, stop creeping into, stop pumping mud, drilling rod is mentioned and makes it unsettled;
(3) start rig, ensure drilling rod uniform rotation according to fixing rotating speed;
(4) inner monitoring means is by gathering the speed discrepancy of rotor and main cylinder, and the yield value of record mud changes, and the data collected are packaged into set form by microprocessor and are stored on SD card, constantly updates inner data;
(5) when needing to check data, drilling rod is mentioned, take out and measure pipe nipple, take off seal cover board, take off monitoring means, be connected by monitoring means by data line with computer, host computer is by data upload module display data change curve and mud yield value change curve, data are preserved, by selecting data removing module erasing internal data to continue next time to use by data storage module.
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| CN106089181B (en) * | 2016-06-08 | 2019-04-26 | 中国地质大学（武汉） | A kind of shaft bottom rotating power machine condition detector |
| CN108457639B (en) * | 2018-01-16 | 2023-02-28 | 中国地质大学（武汉） | Rotating speed measuring sensor suitable for deep well |
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| CN103940702A (en) | 2014-07-23 |
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