CN107795318B - Contact type micro data transfer device and method for underground release - Google Patents
Contact type micro data transfer device and method for underground release Download PDFInfo
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- CN107795318B CN107795318B CN201610808313.9A CN201610808313A CN107795318B CN 107795318 B CN107795318 B CN 107795318B CN 201610808313 A CN201610808313 A CN 201610808313A CN 107795318 B CN107795318 B CN 107795318B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/26—Storing data down-hole, e.g. in a memory or on a record carrier
Abstract
The invention provides a contact type micro data unloading device and method for underground release, and belongs to the field of oil and gas development and exploration. The device comprises a storage bin and a drilling instrument circuit board arranged outside the storage bin; the storage bin is arranged in the drill collar; a push plate is arranged in the inner cavity of the storage bin, and at least one micro storage is arranged below the push plate; a first storage bin contact and a second storage bin contact are arranged on the inner wall of the storage bin; a first storage bin contact lead hole and a second storage bin contact lead hole are formed in the wall of the storage bin, one end of the first storage bin contact lead is connected with a first storage bin contact, the other end of the first storage bin contact lead penetrates through the first storage bin contact lead hole and then is connected with a while-drilling instrument circuit board, one end of the second storage bin contact lead is connected with a second storage bin contact, and the other end of the second storage bin contact lead penetrates through the first storage bin contact lead hole and then is connected with the while-drilling instrument circuit board; and a micro memory circuit board is arranged in the micro memory.
Description
Technical Field
The invention belongs to the field of oil and gas development and exploration, and particularly relates to a contact type micro data transfer device and method for underground release, which are used for uploading underground data to the ground while drilling.
Background
Logging while drilling is distinguished from conventional wireline logging primarily by the real-time nature of the data acquisition, the formation data being obtained with little or no invasion of the drilling fluid and thus closer to the undisturbed formation. The formation data is tested, transmitted to the ground, analyzed and explained on site while drilling, so that the drilling period is saved, the drilling can be guided, the drilling track can be adjusted, and the drilling process is perfected. How to transmit signals at the bottom of a well to the ground is a key link of the logging-while-drilling technology and is one of bottlenecks which restrict the development of the logging-while-drilling technology.
At present, logging while drilling is divided into a wired mode and a wireless mode according to whether data is transmitted or not. The real-time transmission mode is to transmit the data measured while drilling to the ground in time through various wired or wireless data transmission modes. The method has very important significance for guiding the drilling, particularly the geosteering during the drilling, but various data transmission at present cannot achieve the purpose of timely and effectively transmitting a large amount of underground data to the ground.
The wired transmission mode comprises a cable transmission mode, an optical fiber transmission mode and a drill rod transmission mode. Paper 1 ("research on intelligent drill string information and power transmission systems, oil drilling technology", 2006,34(5): 10-13.): the method for transmitting signals while drilling by the cable is to put an armored cable in the drill pipe to transmit signals. As the drilling depth is increased, when a single joint is connected, a cable and a drilling tool must be put forward, or the cable is inserted into the inner hole of the drill rod in advance. Paper 2 (New technology for data transmission while drilling, Petroleum instruments, 2004,18(6): 26-31.): the optical fiber transmission mode is that an optical fiber with a protective layer is put into a well and connected to the ground from the bottom while drilling equipment. The optical fiber functions as a cable. Paper 3 (State of the Art and prospect of Rotary steerable drilling, Petroleum machines, 2006,34(4): 66-70): the transmission mode of the drill rod is that the conductor is installed in the drill rod to form a part of the whole drill rod. The special connecting module arranged on the drill rod joint enables the whole drill column to form an electric signal channel, and data transmission is achieved. The above methods have the advantage of very fast transmission speed due to the wired connection, which is much higher than the wireless method. However, cables, optical fibers, and special drill pipe connectors are required to be installed in the entire wellbore, and the drill pipe is rotated at high speed during drilling, which are very vulnerable. Therefore, these prior arts have common disadvantages of poor reliability, relatively complicated manufacturing process, and often affecting the normal drilling process. These above prior art techniques have been used less frequently in actual logging while drilling production.
The wireless transmission modes comprise mud (drilling fluid) pulse, electromagnetic wave and acoustic wave. The mud pulse and electromagnetic wave mode has been applied to the actual logging while drilling production, and the mud pulse mode is most widely used. Patent 1 (high-speed transmission transmitting device for measurement while drilling, publication No. 201020298582.3): the mud pulse signal generator mainly comprises a discharge valve or a throttle valve, when the valve is in an open state and a closed state, the flow rate of drilling fluid flowing to the annular space in a drill string changes, so that the pressure wave of the drilling fluid in a drill rod can be caused to generate a series of pulses, and data can be loaded on the pulses by opening and closing the valve, so that the data can be transmitted to the ground. However, the mud wave is equivalent to a mechanical wave, the modulation mode of the mud wave greatly limits the speed of the mud wave, the highest transmission speed reported by the prior art can only reach tens of bits of data per second, and the rapid uploading of underground measurement data is difficult to meet. In patent 2 (transmission method and system of electromagnetic wave signals while drilling, publication No. 102251769A), electromagnetic wave while drilling measurement takes the stratum as transmission medium or the drill string as transmission conductor. The underground instrument modulates the measured data onto electromagnetic wave carrier wave, and the electromagnetic wave transmitter transmits the data out underground and transmits the data to the ground through various channels. The ground detector demodulates the detected electromagnetic wave signal modulated with the measurement data through the processing circuit. Document 3 ("application of acoustic transmission testing techniques to oilfield". Measure and control techniques, 2005,24(11): 76278): acoustic or seismic waves are used to transmit signals through a drill pipe or a formation. The sound wave transmitting system is arranged on the drill rod, modulates various measurement data onto sound wave vibration signals, transmits the sound wave vibration signals to the ground along the drill rod, and is received and demodulated by the sound wave receiving system arranged on the ground. The sound wave transmission is the same as the electromagnetic wave transmission, mud circulation is not needed, the implementation method is simple, and the cost is low. The disadvantages of this method are that the attenuation is too fast and is greatly influenced by the environment, the low intensity signal generated by the borehole and the interference of the sound wave and electromagnetic wave generated by the drilling equipment make the detection of the signal very difficult and the transmission speed is slow. Patent 3 (a release type downhole data uploading method and system while drilling, publication No. 201310191269.8) as shown in fig. 1, proposes a method for storing a micro memory on a drill collar, which comprises a micro wireless transceiver module 10, a ground receiving device 12, a derrick 20, a drilling machine 30, a drill pipe 40, a drill bit 50, a water hole 51, a fluid channel 60 in the drill string, a throwing tool 62 while drilling, a measuring tool 65 while drilling, a well bore 70 and an annulus 80, wherein the read-write system in the drill collar wirelessly transfers the data measured while drilling to the micro memory, and then the micro memory is released periodically or aperiodically, enters the annulus to return to the ground along with mud, and also brings the data back to the ground. Due to the fact that the special underground environment, size limitation and the drill collar are made of metal materials, data transmission efficiency of a wireless data transfer mode is greatly reduced.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a contact type micro data unloading device and a contact type micro data unloading method for downhole release.
The invention is realized by the following technical scheme:
a contact type micro data transfer device for underground release comprises a storage bin and a while-drilling instrument circuit board arranged outside the storage bin; the storage bin is arranged in the drill collar;
a push plate is arranged in the inner cavity of the storage bin, and at least one micro storage is arranged below the push plate;
a first storage bin contact and a second storage bin contact are arranged on the inner wall of the storage bin; a first storage bin contact lead hole and a second storage bin contact lead hole are formed in the wall of the storage bin, one end of the first storage bin contact lead is connected with a first storage bin contact, the other end of the first storage bin contact lead penetrates through the first storage bin contact lead hole and then is connected with a while-drilling instrument circuit board, one end of the second storage bin contact lead is connected with a second storage bin contact, and the other end of the second storage bin contact lead penetrates through the first storage bin contact lead hole and then is connected with the while-drilling instrument circuit board;
a micro memory circuit board is arranged in the micro memory; the micro memory is provided with a first micro memory contact and a second micro memory contact, one end of a first micro memory contact lead is connected with the first micro memory contact, the other end of the first micro memory contact lead is connected with the micro memory circuit board, one end of a second micro memory contact lead is connected with the second micro memory contact, and the other end of the second micro memory contact lead is connected with the micro memory circuit board.
The micro memory positioned at the lowest position is clamped at the positions of the first storage bin contact and the second storage bin contact, so that the first storage bin contact is contacted with the first micro memory contact, and the second storage bin contact is contacted with the second micro memory contact;
the first transmission line is formed by the first storage bin contact lead, the first storage bin contact, the first micro-memory contact and the first micro-memory contact lead, and the second transmission line is formed by the second storage bin contact lead, the first storage bin contact, the second micro-memory contact and the second micro-memory contact lead; through the two transmission lines, the MWD instrument circuit board is connected with the micro-memory circuit board.
The storage bin is of a cylindrical structure, the interior of the storage bin is a cavity, the upper end of the storage bin is sealed by a plug and a sealing ring, the lower end of the storage bin is communicated with the flow guide channel, and the micro storage can enter the flow guide channel through the lower end of the storage bin and then enter the annulus of the shaft;
the wall of the storage bin above the pushing plate is provided with a storage bin drilling fluid introducing hole;
a drill collar wall drilling fluid introducing hole is formed in the wall of the drill collar and is communicated with the drill collar inner channel, a control valve is arranged in the hole, and a control lead of the control valve is connected with a while-drilling instrument circuit board through a wiring groove in the outer wall of the storage bin; the drill collar wall drilling fluid introducing hole is communicated with the storage bin drilling fluid introducing hole in the wall of the storage bin; the drilling fluid can sequentially enter the inner cavity of the storage bin above the push plate through the drill collar wall drilling fluid introducing hole and the storage bin drilling fluid introducing hole.
First storage storehouse contact lead wire and second storage storehouse contact lead wire all install on the wall in storage storehouse through high-voltage contact pin, high-voltage contact pin's one end is connected to the storage storehouse inner chamber, and the other end is connected to the storage storehouse outside.
The first storage bin contact, the second storage bin contact, the first micro-memory contact and the second micro-memory contact are all of a convex structure;
the distance from the outermost side of the first micro-memory contact to the outermost side of the second micro-memory contact is greater than the distance from the innermost side of the first storage bin contact to the innermost side of the second storage bin contact; when no pressure or small pressure exists, the first micro memory contact is in contact with the first storage bin contact, the second micro memory contact is in contact with the second storage bin contact, the micro memory cannot pass through the first storage bin contact and the second storage bin contact, and when the pressure reaches a set value, the micro memory can pass through the first storage bin contact and the second storage bin contact.
An electronic cabin is arranged in the drill collar, and an instrument circuit board while drilling is placed in the electronic cabin;
and a cavity below the pushing plate in the storage bin is filled with non-conductive engine oil.
Encapsulating the micro-memory circuit board, the first micro-memory contact and the second micro-memory contact together with an epoxy;
the first micro memory contact and the second micro memory contact are positioned on the surface of the micro memory to realize circuit connection.
The while-drilling instrument circuit board comprises: the system comprises a microcontroller of the while-drilling instrument, a 485 serial port module of the while-drilling instrument, a memory of the while-drilling instrument, a pull-up resistor R1 and a pull-down resistor R2;
the memory of the while-drilling instrument is connected to the microcontroller of the while-drilling instrument through an I2C bus; the microcontroller of the while-drilling instrument is connected to a 485 serial port module of the while-drilling instrument through a UART bus; an A port of a 485 serial port module of the while-drilling instrument is connected to a contact lead of a first storage bin;
a wiring groove is designed on the outer wall of the storage bin, and a first storage bin contact lead is connected with an A port of a 485 serial port module of the while-drilling instrument through the wiring groove on the outer wall of the storage bin;
the port B of the 485 serial port module of the drilling instrument is connected to a contact lead of the second storage bin;
one end of the pull-up resistor R1 is connected to a power supply VCC, and the other end of the pull-up resistor R1 is connected to an A port of a 485 serial port module of the while-drilling instrument;
one end of the pull-down resistor R2 is connected to the ground GND, and the other end of the pull-down resistor R2 is connected to the port B of the 485 serial port module 133 of the while-drilling instrument;
a power supply VCC of the while-drilling instrument circuit board is connected to VDD of the micro-memory circuit board through a pull-up resistor R1 and a power connection diode D1;
the ground GND of the while-drilling instrument circuit board is connected to the VSS of the micro-memory circuit board through a pull-down resistor R2 and a grounding diode D2;
the power supply VCC and the ground GND of the circuit board of the while-drilling instrument form a loop through the pull-up resistor R1, the power supply diode D1, the pull-down resistor R2 and the grounding diode D2, and the power supply VDD and the ground VSS of the circuit board of the micro memory, namely the two ends of the rechargeable battery BAT1 of the circuit board of the micro memory form a loop, and the rechargeable battery BAT1 consumes the electric quantity and is immediately charged by the power supply VCC and the ground GND of the circuit board of the while-drilling instrument.
The resistance values of the pull-up resistor R1 and the pull-down resistor R2 are 500 ohm.
The micro memory circuit board includes: a microcontroller of the micro memory, a 485 serial port module of the micro memory, a memory of the micro memory, a power connection diode D1, a grounding diode D2 and a rechargeable button battery BAT 1;
the memory of the micro memory is connected to the micro controller of the micro memory through an I2C bus; the microcontroller of the micro memory is connected to the 485 serial port module of the micro memory through a UART bus;
the A port of the 485 serial port module of the micro memory is connected to a contact lead of the first micro memory;
the port B of the 485 serial port module of the micro memory is connected to a contact lead of the second micro memory;
one end of the power connection diode D1 is connected to a power supply VCC, and the other end is connected to an A port of the 485 serial port module of the micro memory;
one end of the grounding diode D2 is connected to the ground GND, and the other end is connected to the port B of the 485 serial port module of the micro memory;
one end of a rechargeable button battery BAT1 is connected to a power supply VCC, and the other end of the rechargeable button battery BAT1 is connected to VSS;
the micro-memory circuit board is a circular board, a micro-controller of the micro-memory, a 485 serial port module of the micro-memory, a memory of the micro-memory, a power connection diode D1, a grounding diode D2 and a rechargeable battery BAT1 are all packaged in a micro mode, the front side and the back side of the micro-memory are welded, and the rechargeable battery BAT1 is installed in a laminated mode.
The micro-controller of the micro-memory is packaged by TSSOP of MSP430G2553, the 485 serial port module of the micro-memory is packaged by uMAX, the memory of the micro-memory is packaged by QFN of at24cm01, the power connection diode D1 and the grounding diode D2 are packaged by 0402, and the rechargeable battery BAT1 is a rechargeable button battery.
The data unloading method realized by the device comprises the following steps:
when the rechargeable battery BAT1 of the micro-memory circuit board is charged, the 485 serial port module of the micro-memory downloads data from the 485 serial port module of the while-drilling instrument circuit board, namely the data measured while drilling in the memory of the while-drilling instrument circuit board is downloaded into the memory of the micro-memory;
after the microprocessor in the while-drilling instrument circuit board finishes data transfer with the micro-memory, the control valve is opened through a control lead of the control valve, drilling fluid in the drill collar enters an inner cavity of the storage bin through a drilling fluid introduction hole of the drill collar wall, the control valve and the drilling fluid introduction hole of the storage bin and pushes the push plate to move downwards, and then the micro-memory which finishes data transmission at the bottom is extruded out and enters an annulus of a shaft through a flow guide channel;
continuing to open the control valve until another micro memory card is detected at the position of the first storage bin contact and the second storage bin contact;
immediately closing the control valve and starting a new round of data transmission.
Compared with the prior art, the invention has the beneficial effects that: the invention solves the problems that the prior various micro-memories can not meet the following requirements: special underground environment, size limitation, transmission mode of a micro memory and a read-write system in a drill collar and the like. The contact micro memory is designed to have a capacity of 1Mbit according to an embodiment of the present invention as an example. The release-while-drilling tool releases a micro-memory to complete 1Mbit data transmission, which is equivalent to the most common mud pulser in the prior art, and the transmission speed is generally 1bit/s, so that the data transmitted by the micro-memory is equivalent to the data transmitted by the mud pulser for 11 days. And the number of the data micro-memories can be increased according to the data volume to be transmitted, or a plurality of throwing short sections while drilling are cascaded to increase the data transmission capability. The data transmission quantity can not be achieved by a mud pulser, and the data transmission requirements of the existing acoustic wave while drilling, gamma imaging while drilling and resistivity imaging while drilling can be completely met.
Drawings
Fig. 1 is a schematic diagram of a prior art release transmission method.
Fig. 2 shows a schematic structural diagram of an embodiment of the present invention.
Fig. 3 shows a circuit schematic of an embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
the prior art lacks a quick and low-cost means to transmit underground data to the ground, and is difficult to meet the requirements of the conventional logging while drilling.
The invention designs a contact type micro data transfer device for underground release, which comprises: a structural portion and a circuit portion. The two parts are required to work cooperatively to transfer data from the while-drilling pup joint to the micro data storage device, as shown in fig. 1, the embodiment is a contact type micro storage device for a release type while-drilling data transmission mode, and fig. 1 includes a contact type micro storage device 10, a ground receiving device 12, a derrick 20, a drilling machine 30, a drill pipe 40, a drill bit 50, a water hole 51, a drill string fluid passage 60, a while-drilling throwing pup joint 62, a while-drilling measuring tool 65, a well bore 70 and an annulus 80.
FIG. 2 is a schematic structural diagram of the embodiment. Wherein the structural part includes: the drilling fluid injection device comprises a storage bin 110, a first storage bin contact 115, a second storage bin contact 116, a first storage bin contact lead hole 111, a first storage bin contact lead 113, a second storage bin contact lead hole 112, a second storage bin contact lead 114, a drilling instrument circuit board 130, a micro-memory 120, a first micro-memory contact 121, a second micro-memory contact 122, a first micro-memory contact lead 123, a second micro-memory contact lead 124, a pushing plate 150, a storage bin drilling fluid introduction hole 172, a collar wall drilling fluid introduction hole 171, a control valve 180, a control valve control lead 181, and a control valve control lead 181, wherein the control valve control lead 181 is led out from a wiring groove on the outer wall of the storage bin and then led into an electronic bin to be connected with the circuit board 130 through wiring. The throwing-while-drilling nipple (which is processed by a drill collar or is a special drill collar) is also internally provided with an electronic bin for placing the circuit board 130.
The storage bin 110 is a cylinder structure, the inside of the cylinder is a cavity, the upper end of the cylinder is sealed by a plug and a sealing ring, the lower end of the cylinder is connected to the flow guide channel, and the micro storage device can enter the flow guide channel through the lower end and then enter the annulus 80 of the shaft. The cavity is used for placing the micro memory. The lead 113 in the lead hole is connected through the high-pressure contact pin, and the high-pressure contact pin itself has sealed effect, and high-pressure contact pin one end is connected to the storage storehouse inner chamber, and one end is connected to the storage storehouse outside.
The first and second storage bin contacts 115 and 116 are raised structures, and the first and second micro memory contacts 121 and 122 are also raised structures. The outer diameters of 121 to 122 are slightly larger than the inner diameters of 115 to 116 at the time of sizing. In the absence of pressure or a lesser pressure, 121 and 115 are in contact, and 122 and 116 are in contact, but the micro-memory 120 cannot be pushed through. When the pressure reaches a certain value (which is determined by the pressure differential between the inside and outside of the drill collar), the micro-memory 120 may push through the 115 and 116 contacts.
The entire micro-memory 120 also includes an epoxy encapsulation material with which the circuitry of the micro-memory is encapsulated. After the packaging is completed, the circuitry of the micro memory 120 can be protected, and two contacts of the micro memory 120 are on the surface of the micro memory to realize circuit connection.
As shown in fig. 3, the circuit part thereof includes: an while drilling instrument circuit board 130 and a micro memory circuit board 140.
The while-drilling instrument circuit board comprises 130: the system comprises a microcontroller 132 of the while-drilling instrument, a 485 serial port module 133 of the while-drilling instrument, a memory 131 of the while-drilling instrument, a pull-up resistor R1 and a pull-down resistor R2.
The connection relationship of the internal circuit of the MWD instrument circuit board 130 is as follows: the while-drilling instrument memory 131 is connected to the while-drilling instrument microcontroller 132 via an I2C bus. The while-drilling instrument microcontroller 132 is connected to the while-drilling instrument 485 serial module 133 via a UART bus. An A port of a 485 serial port module 133 of the while-drilling instrument is connected to a first storage bin contact lead 113, a wiring groove is designed on the outer wall of the storage bin, and the lead 113 enters the electronic bin through wiring and is connected to the electronic bin 130 after being routed out from the wiring groove on the outer wall of the storage bin. The port B of the 485 serial module 133 of the drilling instrument is connected to the second magazine contact leads 114, and the other ends of the leads 113 and 114 are respectively connected to the corresponding magazine contacts. One end of the pull-up resistor R1 is connected to a power supply VCC, and the other end is connected to the A port of the 485 serial port module 133 of the while-drilling instrument. One end of the pull-down resistor R2 is connected to the ground GND, and the other end is connected to the port B of the 485 serial port module 133 of the while-drilling instrument.
Wherein the resistance values of the pull-up resistor R1 and the pull-down resistor R2 are 500 ohm. Therefore, a certain charging current can be achieved, and the level output by the 485 serial port module 133 of the while-drilling instrument cannot be influenced. The three chips of the microcontroller 132 of the while-drilling instrument, the 485 serial port module 133 of the while-drilling instrument and the memory 131 of the while-drilling instrument can be mature commercial chips.
The micro memory circuit board 140 includes: microcontroller 142 of the micro-memory, 485 serial port module 143 of the micro-memory, memory 141 of the micro-memory, power connection diode D1, grounding diode D2 and rechargeable button battery BAT 1. 141. 142, 143 can be implemented using commercially available chips.
The circuit board 140 of the micro memory is a circular plate with a diameter of 10 cm (other dimensions can be used as long as the circular plate can be installed inside the micro memory), and the size space is very limited. Therefore, the chips, the diodes and the batteries are all packaged in a micro mode, the front side and the back side of the micro package are welded, and the batteries are installed in a laminated mode.
The micro-controller 142 of the micro-memory is packaged by TSSOP of MSP430G2553, the 485 serial port module 143 of the micro-memory is packaged by uMAX, the memory 141 of the micro-memory is packaged by QFN of at24cm01, and the power diode D1 and the grounding diode D2 are packaged by 0402. Rechargeable button battery BAT1 was a 6.8CM diameter button battery (6.8 CM is only one standard size of button battery, and other sizes are possible, as long as the battery can fit in the micro-memory).
The connection relationship of the internal circuit of the micro memory circuit board 140 is as follows: the memory 141 of the micro memory is connected to the micro controller 142 of the micro memory through an I2C bus. The micro-controller 142 of the micro-memory is connected to the 485 serial module 143 of the micro-memory through a UART bus. The a port of the 485 serial module 143 of the micro-memory is connected to the first micro-memory contact lead 123. The B port of the 485 series die 143 block of the drill tool is connected to the second micro-memory contact lead 124. The power diode D1 has one terminal connected to a power source VCC (VCC and VDD in fig. 3 both represent the positive terminal of the power source in the circuit, VSS and GND represent the negative or ground terminal of the power source in the circuit, VCC and VDD, VSS and GND, respectively, are used), and another terminal connected to the a port of the 485 serial module 143 of the micro memory. One end of the grounding diode D2 is connected to the ground GND, and the other end is connected to the B port of the 485 serial module 143 of the micro memory. The other ends of the two contact leads are respectively connected with the micro-memory contacts.
The storage reservoir 110 is filled with electrically non-conductive oil to maintain pressure equilibrium as the entire assembly is lowered downhole. The storage bin 110 stores 1 or more than 1 micro memory 120, and the lowest micro memory 120 is clamped at the position of the first storage bin contact 115 and the second storage bin contact 116, so that the first storage bin contact 115 is contacted with the first micro memory contact 121, and the second storage bin contact 116 is contacted with the second micro memory contact 122. The while-drilling instrument board 130 thus passes:
the first bin contact lead 113, the first bin contact 115, the first micro memory contact 121, the first micro memory contact lead 123 form a first transmission line.
A second transmission line is formed by second silo contact lead 114, first silo contact 116, second micro-memory contact 122, and second micro-memory contact lead 124.
Through these two transmission lines, the MWD instrument board 130 and the micro-memory board 140 are connected. Although more than 2 contacts and wires can be designed to form more transmission lines, the complexity and reliability of the structure is considered. The optimal design selects 2 transmission lines.
Multiple micro-memories may be provided in a single storage bin. The storage bin is arranged in the throwing nipple while drilling. When one storage bin is not enough, a plurality of throwing-while-drilling short sections can be cascaded, namely, a plurality of storage bins are arranged.
Another characteristic of this embodiment is that two transmission lines are used to complete the transmission of both the electric energy and the data. The implementation mode is as follows:
when the two transmission lines described above have been established,
the power source VCC of the while-drilling instrument board 130 is connected to VDD of the micro-memory board 140 through a pull-up resistor R1 and a power diode D1.
The ground GND of the MWD board 130 is connected to VSS of the micro-memory board through a pull-down resistor R2 and a ground diode D2.
Due to the forward conduction principle of the diode. The power supply VCC and the ground GND of the while-drilling instrument circuit board 130 form a loop for the power supply VDD and the ground VSS of the micro memory circuit board 140, namely two ends of the rechargeable battery BAT1 of the micro memory circuit board 140 through the pull-up resistor R1, the power connection diode D1, the pull-down resistor R2 and the ground connection diode D2, and the power consumption of the rechargeable battery BAT1 is immediately charged by the power supply VCC and the ground GND of the while-drilling instrument circuit board 130.
Due to the reverse blocking principle of the diode. The power supply VDD of the micro memory does not affect the A port of the 485 serial port module 143 of the micro memory, and the ground VSS of the micro memory circuit board 130 does not affect the B port of the 485 serial port module 143 of the micro memory.
According to the design, the two transmission lines are utilized, so that the transmission of electric energy and the transmission of data are completed.
The data unloading process of the invention is as follows:
after the rechargeable battery BAT1 of the micro-memory circuit board 140 is charged, the 485 serial port module 143 of the micro-memory downloads data from the 485 serial port module 133 of the while-drilling instrument circuit board, that is, the data measured while drilling in the memory 131 of the while-drilling instrument circuit board is downloaded into the memory 141 of the micro-memory;
after the microprocessor in the circuit board 130 finishes data transfer with the micro memory 120, the control valve 180 is opened through the control valve control lead 181, and as the pressure of a channel in the drill collar 100 (the wall thickness of the drill collar is generally more than 20CM, and the channel in the drill collar is a drilling fluid channel, a cavity is formed in the thick wall of the drill collar, and the pressure of a storage bin arranged in a thick-wall inner cavity of the drill collar) is higher than the pressure outside the drill collar (namely, annular space), the drilling fluid in the channel in the drill collar passes through the drilling fluid introducing hole 171 in the drill collar wall, the control valve 180 and the drilling fluid introducing hole 172 in the storage bin, enters the inner cavity of the storage bin 110 and pushes the pushing plate 150 to move downwards, so that the micro memory 120 which finishes data transmission at the lowest part is extruded out and enters the annular space 80 of a shaft through a flow guide channel;
the control valve 180 is now continued to open until a further micro memory 120 is detected to be stuck in the position of the first and second storage compartment contacts 115, 116.
At this point, the control valve 180 is immediately closed and a new round of data transmission begins.
The above-described embodiment is only one embodiment of the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be easily made based on the application and principle of the present invention disclosed in the present application, and the present invention is not limited to the method described in the above-described embodiment of the present invention, so that the above-described embodiment is only preferred, and not restrictive.
Claims (10)
1. A contact type micro data unloading device for underground release is characterized in that: the device comprises a storage bin and a drilling instrument circuit board arranged outside the storage bin; the storage bin is arranged in the drill collar;
a push plate is arranged in the inner cavity of the storage bin, and at least one micro storage is arranged below the push plate;
a first storage bin contact and a second storage bin contact are arranged on the inner wall of the storage bin; a first storage bin contact lead hole and a second storage bin contact lead hole are formed in the wall of the storage bin, one end of the first storage bin contact lead is connected with a first storage bin contact, the other end of the first storage bin contact lead penetrates through the first storage bin contact lead hole and then is connected with a while-drilling instrument circuit board, one end of the second storage bin contact lead is connected with a second storage bin contact, and the other end of the second storage bin contact lead penetrates through the first storage bin contact lead hole and then is connected with the while-drilling instrument circuit board;
a micro memory circuit board is arranged in the micro memory; a first micro-memory contact and a second micro-memory contact are arranged on the micro-memory, one end of a first micro-memory contact lead is connected with the first micro-memory contact, the other end of the first micro-memory contact lead is connected with the micro-memory circuit board, one end of a second micro-memory contact lead is connected with the second micro-memory contact, and the other end of the second micro-memory contact lead is connected with the micro-memory circuit board;
the interior of the storage bin is a cavity, the upper end of the storage bin is sealed by a plug and a sealing ring, the lower end of the storage bin is communicated with the flow guide channel, and the micro storage can enter the flow guide channel through the lower end of the storage bin and then enter the annulus of the shaft;
the wall of the storage bin above the pushing plate is provided with a storage bin drilling fluid introducing hole;
a drill collar wall drilling fluid introducing hole is formed in the wall of the drill collar and is communicated with the drill collar inner channel, and a control valve is arranged in the drill collar wall drilling fluid introducing hole;
the drill collar wall drilling fluid introducing hole is communicated with the storage bin drilling fluid introducing hole in the wall of the storage bin; the drilling fluid can sequentially enter the inner cavity of the storage bin above the push plate through the drill collar wall drilling fluid introducing hole and the storage bin drilling fluid introducing hole.
2. The downhole released contact micro data transfer device of claim 1, wherein: the micro memory positioned at the lowest position is clamped at the positions of the first storage bin contact and the second storage bin contact, so that the first storage bin contact is contacted with the first micro memory contact, and the second storage bin contact is contacted with the second micro memory contact;
the first transmission line is formed by the first storage bin contact lead, the first storage bin contact, the first micro-memory contact and the first micro-memory contact lead, and the second transmission line is formed by the second storage bin contact lead, the first storage bin contact, the second micro-memory contact and the second micro-memory contact lead; through the two transmission lines, the MWD instrument circuit board is connected with the micro-memory circuit board.
3. The downhole released contact micro data transfer device of claim 2, wherein: the storage bin is of a cylindrical structure;
and a control lead of the control valve is connected with the while-drilling instrument circuit board through a wiring groove on the outer wall of the storage bin.
4. The downhole released contact micro data transfer device of claim 3, wherein: the first storage bin contact, the second storage bin contact, the first micro-memory contact and the second micro-memory contact are all of a convex structure;
the distance from the outermost side of the first micro-memory contact to the outermost side of the second micro-memory contact is greater than the distance from the innermost side of the first storage bin contact to the innermost side of the second storage bin contact; when no pressure or small pressure exists, the first micro memory contact is in contact with the first storage bin contact, the second micro memory contact is in contact with the second storage bin contact, the micro memory cannot pass through the first storage bin contact and the second storage bin contact, and when the pressure reaches a set value, the micro memory can pass through the first storage bin contact and the second storage bin contact;
first storage storehouse contact lead wire and second storage storehouse contact lead wire all install on the wall in storage storehouse through high-voltage contact pin, high-voltage contact pin's one end is connected to the storage storehouse inner chamber, and the other end is connected to the storage storehouse outside.
5. The downhole released contact micro data transfer device of claim 4, wherein: an electronic cabin is arranged in the drill collar, and an instrument circuit board while drilling is placed in the electronic cabin;
and a cavity below the pushing plate in the storage bin is filled with non-conductive engine oil.
6. The downhole released contact micro data transfer device of claim 5, wherein: encapsulating the micro-memory circuit board, the first micro-memory contact and the second micro-memory contact together with an epoxy;
the first micro memory contact and the second micro memory contact are positioned on the surface of the micro memory to realize circuit connection.
7. The downhole released contact micro data transfer device of claim 6, wherein: the while-drilling instrument circuit board comprises: the system comprises a microcontroller of the while-drilling instrument, a 485 serial port module of the while-drilling instrument, a memory of the while-drilling instrument, a pull-up resistor R1 and a pull-down resistor R2;
the memory of the while-drilling instrument is connected to the microcontroller of the while-drilling instrument through an I2C bus; the microcontroller of the while-drilling instrument is connected to a 485 serial port module of the while-drilling instrument through a UART bus; an A port of a 485 serial port module of the while-drilling instrument is connected to a contact lead of a first storage bin;
a wiring groove is designed on the outer wall of the storage bin, and a first storage bin contact lead is connected with an A port of a 485 serial port module of the while-drilling instrument through the wiring groove on the outer wall of the storage bin;
the port B of the 485 serial port module of the drilling instrument is connected to a contact lead of the second storage bin;
one end of the pull-up resistor R1 is connected to a power supply VCC, and the other end of the pull-up resistor R1 is connected to an A port of a 485 serial port module of the while-drilling instrument;
one end of the pull-down resistor R2 is connected to the ground GND, and the other end of the pull-down resistor R2 is connected to the port B of the 485 serial port module 133 of the while-drilling instrument;
a power supply VCC of the while-drilling instrument circuit board is connected to VDD of the micro-memory circuit board through a pull-up resistor R1 and a power connection diode D1;
the ground GND of the while-drilling instrument circuit board is connected to the VSS of the micro-memory circuit board through a pull-down resistor R2 and a grounding diode D2;
the power supply VCC and the ground GND of the circuit board of the while-drilling instrument form a loop through a pull-up resistor R1, a power supply diode D1, a pull-down resistor R2 and a ground diode D2, and the power supply VDD and the ground VSS of the circuit board of the micro memory, namely two ends of a rechargeable battery BAT1 of the circuit board of the micro memory form a loop, and the rechargeable battery BAT1 consumes the electric quantity and is immediately charged by the power supply VCC and the ground GND of the circuit board of the while-drilling instrument;
the resistance values of the pull-up resistor R1 and the pull-down resistor R2 are 500 ohm.
8. The downhole released contact micro data transfer device of claim 7, wherein: the micro memory circuit board includes: a microcontroller of the micro memory, a 485 serial port module of the micro memory, a memory of the micro memory, a power connection diode D1, a grounding diode D2 and a rechargeable button battery BAT 1;
the memory of the micro memory is connected to the micro controller of the micro memory through an I2C bus; the microcontroller of the micro memory is connected to the 485 serial port module of the micro memory through a UART bus;
the A port of the 485 serial port module of the micro memory is connected to a contact lead of the first micro memory;
the port B of the 485 serial port module of the micro memory is connected to a contact lead of the second micro memory;
one end of the power connection diode D1 is connected to a power supply VCC, and the other end is connected to an A port of the 485 serial port module of the micro memory;
one end of the grounding diode D2 is connected to the ground GND, and the other end is connected to the port B of the 485 serial port module of the micro memory;
one end of a rechargeable button battery BAT1 is connected to a power supply VCC, and the other end of the rechargeable button battery BAT1 is connected to VSS;
the micro-memory circuit board is a circular board, a micro-controller of the micro-memory, a 485 serial port module of the micro-memory, a memory of the micro-memory, a power connection diode D1, a grounding diode D2 and a rechargeable battery BAT1 are all packaged in a micro mode, the front side and the back side of the micro-memory are welded, and the rechargeable battery BAT1 is installed in a laminated mode.
9. The downhole released contact micro data transfer device of claim 8, wherein: the micro-controller of the micro-memory is packaged by TSSOP of MSP430G2553, the 485 serial port module of the micro-memory is packaged by uMAX, the memory of the micro-memory is packaged by QFN of at24cm01, the power connection diode D1 and the grounding diode D2 are packaged by 0402, and the rechargeable battery BAT1 is a rechargeable button battery.
10. A data unloading method implemented by using the downhole released contact type micro data unloading device according to any one of claims 1 to 9, wherein: the method comprises the following steps:
when the rechargeable battery BAT1 of the micro-memory circuit board is charged, the 485 serial port module of the micro-memory downloads data from the 485 serial port module of the while-drilling instrument circuit board, namely the data measured while drilling in the memory of the while-drilling instrument circuit board is downloaded into the memory of the micro-memory;
after the microprocessor in the while-drilling instrument circuit board finishes data transfer with the micro-memory, the control valve is opened through a control lead of the control valve, drilling fluid in the drill collar enters an inner cavity of the storage bin through a drilling fluid introduction hole of the drill collar wall, the control valve and the drilling fluid introduction hole of the storage bin and pushes the push plate to move downwards, and then the micro-memory which finishes data transmission at the bottom is extruded out and enters an annulus of a shaft through a flow guide channel;
continuing to open the control valve until another micro memory card is detected at the position of the first storage bin contact and the second storage bin contact;
immediately closing the control valve and starting a new round of data transmission.
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| CN201610808313.9A CN107795318B (en) | 2016-09-07 | 2016-09-07 | Contact type micro data transfer device and method for underground release |
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| CN112696193B (en) * | 2019-10-18 | 2022-11-25 | 中国石油化工股份有限公司 | Storage device and drill collar comprising same |
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