CN201420548Y - Pressure detection device used for transmitting commands to downhole in drilling operation - Google Patents
Pressure detection device used for transmitting commands to downhole in drilling operation Download PDFInfo
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- CN201420548Y CN201420548Y CN200920108247XU CN200920108247U CN201420548Y CN 201420548 Y CN201420548 Y CN 201420548Y CN 200920108247X U CN200920108247X U CN 200920108247XU CN 200920108247 U CN200920108247 U CN 200920108247U CN 201420548 Y CN201420548 Y CN 201420548Y
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Abstract
The utility model relates to a pressure detection device used for transmitting commands to the downhole in the drilling operation, which is characterized in that the device comprises a pressure sensorcircuit, a signal amplifying circuit, a high-precision A/D converting circuit, a control and processing unit, a storage unit and a communication unit, wherein, the pressure sensor circuit is a pressure sensor used for receiving pressure signals from slurry and converting the pressure signals into voltage signals. The voltage signals are amplified via the signal amplifying circuit and then are conveyed to an analog signal input terminal of the high-precision A/D converting circuit; the control and processing unit controls an A/D converting chip of the high-precision A/D converting circuit to perform sampling and stores the sampled data into the storage unit; and the communication unit provides an interface for a single-chip microcomputer and a personal computer (PC). The utility model candetect the pressure pulse transmitted from the ground to the downhole so as to realize the detection of information transmitted from the ground to the downhole, and can be used for guiding control ofa navigation drilling system.
Description
Technical field
The utility model relates to a kind of pressure-detecting device, is meant especially to be used to instruct down the pressure-detecting device that passes in a kind of drillng operation.
Background technology
The well track automatic control technology has become the focus of current drilling technology research in the drillng operation, and one of its key problem in technology is exactly the information and the instruction transmission problem in ground and shaft bottom.Measurement while drilling (MWD) technology is mainly used to monitor underground working, the information that realized earthward transmission from the down-hole.But information in fact also belongs to the stage of exploration, trial-production at present at home to the technology of shaft bottom transmission from ground, ripe instrument and method also do not occur at home.
At present realization information is transmitted to the shaft bottom from ground following several method is arranged in the drillng operation: 1, utilize the pressure sensor induction well head standpipe drilling fluid displacement to change the pressure that causes and change and come transmission information.Though what it adopted is the pressure down transmission method, mainly lays particular emphasis on the design of pipeline configuration and the production method of pressure pulse.2, utilize the variation of rod rotation speed or variation that put-on and delegated operates in the angular velocity that causes in the shaft bottom or the variation of acceleration to come transmission information.3, utilize near be installed in the downhole drill bit the responsive vibration of acceleration transducer to change and come transmission information, vibration can be by creeping into brokenly rock, i.e. Ground Control footage per bit produces, and also can realize by driving drilling rod or drilling rod being rotated.4, abroad have in a plurality of tool joints place and embed one group of coupling coil, the variation of one group of coil-induced last group of coil electromagnetism field, back also uses the mode of relay transmission to prevent that signal attenuation from becoming garbage signal, the transmitted in both directions of realization information, but this method has special requirement to tubing and frame for movement, is unfavorable for being extensive use of.Said method the 2,3, the 4th, angular velocity, vibration and the electromagnetic signal of utilizing drilling rod are to downhole transmitted information.
Summary of the invention
At the problems referred to above, main purpose of the present utility model be to provide a kind of can identification and the storage surface instruction pass down and be used to instruct down the pressure-detecting device of biography in the drillng operation of the instruction and data that device sends, but instruction, the data of the instruction that the biography device sends under its comparative information, data and identification of this device and storage instruct coding that foundation is provided thereby can analyze the interference improvement that runs in the transmission of mud-pulse signal to the researcher.
For achieving the above object, technical scheme provided by the utility model is: be used to instruct down the pressure-detecting device that passes in a kind of drillng operation, it is characterized in that comprising: pressure sensor circuit, signal amplification circuit, high-precision A/D change-over circuit, control and processing unit, memory cell and communication unit; Wherein said pressure sensor circuit is a pressure sensor, reception converts voltage signal to from the pressure signal in the mud and with pressure signal, after amplifying via described signal amplification circuit, voltage signal is sent to the input end of analog signal of described high-precision A/D change-over circuit, described control and processing unit are controlled the A/D conversion chip sampling of described high-precision A/D change-over circuit, and depositing the data that collected in memory cell, communication unit provides interface for single-chip microcomputer with communicating by letter of PC.
Described control and processing unit are single-chip microcomputer.
Described pressure sensor circuit is that a microminiature flushes diaphragm type pressure sensor.
Described high-precision A/D change-over circuit adopts 24 A/D conversion chips of high accuracy to constitute.
Described signal amplification circuit comprises four operational amplifiers and resistance that matches and electric capacity, wherein two operational amplifiers connect the PV+ and the PV-end of described pressure sensor respectively, other two operational amplifiers are serially connected in the output of this two operational amplifier successively, constitute described signal amplification circuit jointly with each described resistance, electric capacity.
Adopt technique scheme, the utility model can be realized the transmission of the information between the ground and down-hole in the drilling operation course, and have the following advantages: 1, the utility model can detect the pressure pulse of terrestrial transmission to the down-hole, thereby realized the detection of ground, and be used for the guiding control of NDS to the information of downhole transmitted.2, therefore the utility model has been realized the advantage that equipment power dissipation is low, volume is little, and has been improved the impact resistance of checkout gear owing to adopt the chip of Highgrade integration to constitute.3, control of the present utility model and processing unit are when the information that will receive is transferred to the guide controller of well system, can store the information of terrestrial transmission for a long time to the down-hole, when system improving behind ground, the information that receives can be played back to ground-based computer by communication unit, realize the fault diagnosis of the reproduction of data, confirm the steerable drilling effect, the checking instruction is the reliability of biography system down.4, adopt the low consumption circuit testing circuit, testing circuit is powered, make the utility model can send to the pressure pulse of down-hole on long term monitoring ground, down-hole by dry cell.5, have high-precision 24 A/D converter ADS1226 owing to having adopted, improved the decoding capability of system.
Description of drawings
Fig. 1 is a schematic block circuit diagram of the present utility model
Fig. 2 is circuit theory diagrams of the present utility model
Fig. 3 is the schematic diagram of the utility model signal amplification circuit
The specific embodiment
In order to describe structure of the present utility model, characteristics and effect in detail, existing following preferred embodiment of act and conjunction with figs. are described as follows.
Provided by the utility modelly be used to instruct down the pressure-detecting device that passes be a kind ofly to pass the device pressure testing down and receive pipe nipple, its reception also storage terrestrial information passes the instruction and data that device sends down.The biography device is delivered to the down-hole to the operational order on ground and data by the pressure pulse of mud under the information, and the information identification that pressure pulse signal is entrained of the reception pipe nipple of bottom also stores.Surface information passes instruction, the data of instruction, data and identification of reception pipe nipple and storage that device sent down contrastively, can help the researcher to analyze the interference that external environment condition is transmitted the mud-pulse signal in the drilling process.The researcher just can improve the instruction coding like this, reduces the probability that the down-hole receiving equipment can not be discerned or wrong identification is instructed, and improves the reliability and the efficient of well system.
As shown in Figure 1, for being used to instruct down the circuit theory diagrams of the pressure-detecting device that passes in the drillng operation of the present utility model, it comprises pressure sensor circuit, signal amplification circuit, high-precision A/D change-over circuit, control and processing unit, memory cell and communication unit.
Wherein pressure sensor circuit receives and converts voltage signal to from the pressure signal in the mud and with pressure signal, is sent to the input end of analog signal of high-precision A/D change-over circuit after voltage signal amplifies via signal amplification circuit.The A/D conversion chip sampling of control and processing unit control high-precision A/D change-over circuit, with the pressure signal decoding that is collected, change corresponding instruction information to obtain with the pressure of mud, and the command information that will obtain after will decoding passes to the guide controller of well system, and control and processing unit also deposit A/D pressure signal that conversion chip collects in memory cell simultaneously.Communication unit provides interface with processing unit with communicating by letter of upper strata PC for control.
As shown in Figure 2, pressure sensor circuit is a pressure sensor IC1, adopts the microminiature of SENSOTEC company to flush diaphragm type pressure sensor, and its pressure measurement range is 150 to 20,000psi.
As shown in Figure 3, signal amplification circuit comprises operational amplifier IC7, IC8, IC9, IC10, resistance R 1-R7 and capacitor C 1, C2.Operational amplifier IC7, IC8 connect PV+ and the PV-end of pressure sensor IC1 respectively, and operational amplifier IC9, IC10 are connected in series the output of operational amplifier IC7, IC8 successively, constitute signal amplification circuit jointly with resistance R 1-R7 and capacitor C 1, C2.Wherein amplifier chip IC 7-IC10 is that model is four amplifiers in the integrated circuit of OPA4234.The resistance in the signal amplification circuit and the numerical value of electric capacity are respectively: R1=1K Ω, R2=20K Ω, R3=1K Ω, R4=20K Ω, R5=1K Ω, R6=1K Ω, R7=20K Ω; Capacitor C 1=0.1 μ F, C2=0.1 μ F.
Again as shown in Figure 2, high-precision A/D change-over circuit is made of A/D conversion chip IC2 and voltage reference source IC3, high precision analogue conversion chip IC2 is high-precision 24 A/D converter ADS1226, and voltage reference source IC3 adopts 5V stable reference voltage source, and model is REF02.Control and processing unit are made of single-chip microcomputer IC4, and model is PIC16F877A.Memory cell is made of dual-port storage chip IC5, and model is K9K8G08U0A.Communication unit is that the interface chip IC6 of RS232 constitutes by model.
The course of work of the present utility model is as follows:
Pressure sensor IC1 receives from the pressure signal in the mud and with pressure signal and converts the voltage signal at PV+ and PV-two ends to, is sent to input end of analog signal AINP1 and the AINN1 of high-precision A/D conversion chip IC2 after the voltage signal at PV+ and PV-two ends amplifies via signal amplification circuit.5V stable reference voltage source IC3 connects REFP and the REFN end of high-precision A/D conversion chip IC2, for high-precision A/D conversion chip IC2 provides stable reference voltage.Single-chip microcomputer IC4 control A/D conversion chip IC2 sampling, and, deposit dual-port storage chip IC5 in the pressure signal decoding that is collected.Chip IC 6 is communicated by letter with PC for single-chip microcomputer interface is provided.
Wherein A/D conversion chip IC2 adopts the connected mode of MODE end ground connection, selects 24 sampling with high precision patterns of A/D conversion chip IC2.Adopt the connected mode of MUX end ground connection, with input end of analog signal AINP1 and the AINN1 gating of A/D conversion chip IC2.
The RA0 of single-chip microcomputer IC4 links to each other with the START of A/D conversion chip IC2, and RA1 links to each other with the SLK of A/D conversion chip IC2, and RB0 links to each other with the DRDY/DOUT of A/D conversion chip IC2.Wherein whether RA0 control A/D conversion chip IC2 begins sampling; RA1 gives rising edge of A/D conversion chip IC2, allows A/D conversion chip IC2 export the A/D transformation result.The DRDY/DOUT of A/D conversion chip IC2 is that high level represents that data export, and represents sampling for low level and finishes and can export transformation result.
As shown in Figure 2, the CS of single-chip microcomputer IC4, RA4, RA5, RA2, RA3, RD, WR link to each other with CE, CLE, ALE, WP, R/B, RE, the WE of dual-port storage chip IC5 successively.Wherein CS links to each other with CE, the sheet choosing of control dual-port storage chip IC5; RA4 links to each other with CLE and finishes the function of command latch enable; RA5 links to each other with ALE and finishes the function that address latch enables.RA2 links to each other with WP and finishes write-protected function.RA3 links to each other with R/B, and the R/B high level is represented storage chip IC5 all set, can carry out read-write operation next time, otherwise just can not carry out read-write operation next time.RD links to each other with RE, finishes the function that reads data enable from dual-port storage chip IC5.WR links to each other with WE and finishes the function of dual-port storage chip IC5 being write data enable.The RD0-RD7 of single-chip microcomputer IC4 links to each other successively with the I/O0-I/O7 of dual-port storage chip IC5, be data/address bus be again address bus.
The TX of single-chip microcomputer IC4 links to each other with the T1IN of interface chip IC6, and one in the T1OUT of interface chip IC6 and the Serial Port Line of PC links to each other, and is responsible for signal is uploaded to from single-chip microcomputer the PC on upper strata.A R1IN with interface chip IC6 in the Serial Port Line of PC links to each other, and the R1OUT of interface chip IC6 links to each other with the RX of single-chip microcomputer IC4, is responsible for signal is passed to single-chip microcomputer IC4 under PC.
The utlity model has following beneficial effect:
1, the utility model can detect the pressure pulse of terrestrial transmission to the down-hole, thereby has realized the detection of ground to the information of downhole transmitted, and is used for the guiding control of NDS.
2, therefore the utility model has been realized the advantage that equipment power dissipation is low, volume is little, and has been improved the impact resistance of checkout gear owing to adopt the chip of Highgrade integration to constitute.
3, control of the present utility model and processing unit are when the information that will receive is transferred to the guide controller of well system, can store the information of terrestrial transmission for a long time to the down-hole, when system improving behind ground, the information that receives can be played back to ground-based computer by communication unit, realize the fault diagnosis of the reproduction of data, confirm the steerable drilling effect, the checking instruction is the reliability of biography system down.
4, adopt the low consumption circuit testing circuit, testing circuit is powered, make the utility model can send to the pressure pulse of down-hole on long term monitoring ground, down-hole by dry cell.
5, have high-precision 24 A/D converter ADS1226 owing to having adopted, improved the decoding capability of system.
The above only is a preferred embodiment of the present utility model, and all single-chip microcomputer, sensor, A/D converter and other transfer of data, storage chips of identical function can realized well known in the art all should be included in the scope of patent protection of the present utility model.
Claims (6)
1, is used to instruct down the pressure-detecting device that passes in a kind of drillng operation, it is characterized in that comprising: pressure sensor circuit, signal amplification circuit, high-precision A/D change-over circuit, control and processing unit, memory cell and communication unit;
Wherein said pressure sensor circuit is a pressure sensor, reception converts voltage signal to from the pressure signal in the mud and with pressure signal, after amplifying via described signal amplification circuit, voltage signal is sent to the input end of analog signal of described high-precision A/D change-over circuit, described control and processing unit are controlled the A/D conversion chip sampling of described high-precision A/D change-over circuit, and depositing the data that collected in memory cell, communication unit provides interface for single-chip microcomputer with communicating by letter of PC.
2, be used to instruct down the pressure-detecting device that passes in the drillng operation as claimed in claim 1, it is characterized in that: described control and processing unit are single-chip microcomputer.
3, be used to instruct down the pressure-detecting device that passes in the drillng operation as claimed in claim 1, it is characterized in that: described pressure sensor circuit is that a microminiature flushes diaphragm type pressure sensor.
4, be used to instruct down the pressure-detecting device that passes in the drillng operation as claimed in claim 2, it is characterized in that: described pressure sensor circuit is that a microminiature flushes diaphragm type pressure sensor.
5, as being used to instruct down the pressure-detecting device that passes in claim 1 or 2 or the 3 or 4 described drillng operations, it is characterized in that: described high-precision A/D change-over circuit adopts 24 A/D conversion chips of high accuracy to constitute.
6, as being used to instruct down the pressure-detecting device that passes in claim 1 or 2 or the 3 or 4 described drillng operations, it is characterized in that: described signal amplification circuit comprises four operational amplifiers and resistance that matches and electric capacity, wherein two operational amplifiers connect the PV+ and the PV-end of described pressure sensor respectively, other two operational amplifiers are serially connected in the output of this two operational amplifier successively, constitute described signal amplification circuit jointly with each described resistance, electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920108247XU CN201420548Y (en) | 2009-05-25 | 2009-05-25 | Pressure detection device used for transmitting commands to downhole in drilling operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920108247XU CN201420548Y (en) | 2009-05-25 | 2009-05-25 | Pressure detection device used for transmitting commands to downhole in drilling operation |
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| Publication Number | Publication Date |
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| CN201420548Y true CN201420548Y (en) | 2010-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200920108247XU Expired - Lifetime CN201420548Y (en) | 2009-05-25 | 2009-05-25 | Pressure detection device used for transmitting commands to downhole in drilling operation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619498A (en) * | 2012-02-17 | 2012-08-01 | 北京石油机械厂 | Steering drilling system based on top driving and ground control and drilling operation method |
| CN101566060B (en) * | 2009-05-25 | 2013-03-20 | 中国海洋石油总公司 | Pressure detection device used for instruction issue in drilling operation |
| CN104929611A (en) * | 2015-04-20 | 2015-09-23 | 中国海洋石油总公司 | Ground instruction transmission method and ground instruction transmission system |
| CN104975843A (en) * | 2015-07-13 | 2015-10-14 | 中国科学技术大学 | Stress timing device for drill bit |
| CN113846965A (en) * | 2020-06-09 | 2021-12-28 | 中国石油化工股份有限公司 | System for controlling downhole steering tool |
-
2009
- 2009-05-25 CN CN200920108247XU patent/CN201420548Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566060B (en) * | 2009-05-25 | 2013-03-20 | 中国海洋石油总公司 | Pressure detection device used for instruction issue in drilling operation |
| CN102619498A (en) * | 2012-02-17 | 2012-08-01 | 北京石油机械厂 | Steering drilling system based on top driving and ground control and drilling operation method |
| CN102619498B (en) * | 2012-02-17 | 2015-04-15 | 北京石油机械厂 | Drilling operation method of steering drilling system based on top driving and ground control |
| CN104929611A (en) * | 2015-04-20 | 2015-09-23 | 中国海洋石油总公司 | Ground instruction transmission method and ground instruction transmission system |
| CN104929611B (en) * | 2015-04-20 | 2018-05-08 | 中国海洋石油总公司 | A kind of surface instruction down transmission method and system |
| CN104975843A (en) * | 2015-07-13 | 2015-10-14 | 中国科学技术大学 | Stress timing device for drill bit |
| CN104975843B (en) * | 2015-07-13 | 2018-04-10 | 中国科学技术大学 | A kind of bit force time set |
| CN113846965A (en) * | 2020-06-09 | 2021-12-28 | 中国石油化工股份有限公司 | System for controlling downhole steering tool |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100310 Effective date of abandoning: 20090525 |
|
| RGAV | Abandon patent right to avoid regrant |