CN105401932A - Ground system for measurement while drilling - Google Patents
Ground system for measurement while drilling Download PDFInfo
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- CN105401932A CN105401932A CN201410468604.9A CN201410468604A CN105401932A CN 105401932 A CN105401932 A CN 105401932A CN 201410468604 A CN201410468604 A CN 201410468604A CN 105401932 A CN105401932 A CN 105401932A
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Abstract
The invention provides a ground system for measurement while drilling. The ground system comprises a ground interface box, a PC, a driller displayer, vertical pipe pressure sensors, a hook load sensor and a depth encoder. The ground interface box comprises a master control module, a depth collection module, a pressure collection module and a PC communication interface module. The PC is connected with the ground interface box through the PC communication interface module and the master control module. Collected signals are uploaded to the pressure collection module through the vertical pipe pressure sensors, the hook load sensor and the depth encoder are connected with the depth collection module, and the driller displayer and an underground detection pipe are connected with the master control module. According to the ground system for measurement while drilling, the corresponding sensors, depth encoder, underground detection pipe and driller displayer are controlled through the master control module in the interface box to work, and the functions of sampling, processing, storing, displaying and the like of underground information are achieved during measurement while drilling; and according to the scheme, the structure is modular, implementation is easy, and high practicality and stability are achieved.
Description
Technical field
The present invention relates to oil exploration technology field, in particular to a kind of measurement while drilling ground system.
Background technology
Measurement while drilling is exactly in drilling process, complete the continuous automatic measurement to relevant parameter near shaft bottom, then by mud-pulse, metrical information is sent to ground, by ground system, metrical information gathered, store, process, show, so ground system plays a very important role to whole well logging.At home, drilling measuring technology does not also have full maturity, and the ground system in past can not meet the needs of existing measurement while drilling.
Because existing ground system cannot meet the needs of measurement while drilling, so develop the target that a kind of ground system being applied to measurement while drilling becomes those skilled in the art's pursuit.
Summary of the invention
In order to the ground system solving prior art cannot meet the technical problems such as the needs of measurement while drilling, the object of the present invention is to provide a kind of measurement while drilling ground system.
For realizing above goal of the invention, the technical solution used in the present invention is as follows:
A kind of measurement while drilling ground system, comprises following components: terrestrial interface case, PC, driller's display, standpipe pressure sensor, hook set sensor and depth encoder; Terrestrial interface case comprise main control module, degree of depth acquisition module, pressure acquisition module, with PC communication interface modules; Communicated by a USART between main control module with PC communication interface modules, described main control module and pressure acquisition module, degree of depth acquisition module share a spi bus; Described PC is connected with terrestrial interface case with PC communication interface modules, described main control module by described, the signal collected is uploaded to described pressure acquisition module by described standpipe pressure sensor, described hook set sensor, depth encoder are connected with described degree of depth acquisition module, and described driller's display, underground probe are connected with described main control module.
In preferably technical scheme, described main control module comprises MCU, ethernet PHY, second interface circuit and the 3rd interface circuit, first front-end processing circuit, power supply output control circuit, source current sample circuit, described MCU is by being connected with PC with the first interface circuit of PC interface module, described MCU sequentially passes through ethernet PHY, communicate with PC after RJ45, described MCU is connected the second interface circuit and the 3rd interface circuit respectively by the 2nd USART with the 3rd USART, and by the 3rd interface circuit forward command to driller's display, communicated with underground probe by the second interface circuit, the pulse signal of underground probe collection is uploaded to described MCU by described first front-end processing circuit, described MCU is that underground probe is powered by power supply output control circuit, described source current sample circuit will be supplied to the current feedback of underground probe to described MCU.
In preferably technical scheme, described pressure acquisition module comprises the second front-end processing circuit and double channel A/D converter, and the signal received from standpipe pressure sensor is uploaded to spi bus by A/D converter by the second front-end processing circuit.
In preferably technical scheme, described degree of depth acquisition module comprises a single-chip microcomputer and the 3rd front-end processing circuit, the signal that hook set sensor and depth encoder receive is uploaded to single-chip microcomputer by described 3rd front-end processing circuit, after single-chip microcomputer process, be uploaded to described spi bus.
In preferably technical scheme, the size of current that described pressure sensor and described hook set sensor signal export is 4-20mA.
In preferably technical scheme, the connection of described terrestrial interface case and driller's display, pressure sensor, hook set sensor, depth encoder is transferred by Splices cable box.
In preferably technical scheme, described PC and described terrestrial interface case power supply are 220V civil power.
In preferably technical scheme, described PC and described terrestrial interface case power supply adopt ups power, and power is 200 watts.
The present invention is used for the ground system of measurement while drilling, by the corresponding sensor of master control module controls in interface box, depth encoder, underground probe, the work of driller's display, achieve in well logging during functions such as the sampling of down-hole information, process, storage, displays, this programme structural module, be easy to realize, practical, stability is high.
Accompanying drawing explanation
As the structured flowchart that Fig. 1 is a kind of measurement while drilling ground system of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the present invention are described in detail.
As shown in Figure 1, a kind of measurement while drilling ground system of the present invention comprises following components: terrestrial interface case, PC, driller's display, standpipe pressure sensor, hook set sensor and depth encoder.Terrestrial interface case comprise main control module, degree of depth acquisition module, pressure acquisition module, with PC communication interface modules; Communicated by a USART between main control module with PC communication interface modules, described main control module and pressure acquisition module, degree of depth acquisition module share a spi bus; Described PC is connected with terrestrial interface case with PC communication interface modules, described main control module by described, the signal collected is uploaded to described pressure acquisition module by described standpipe pressure sensor, described hook set sensor, depth encoder are connected with described degree of depth acquisition module, and described driller's display, underground probe are connected with described main control module.
Terrestrial interface case is responsible for each sensor signal to carry out nursing one's health and processing, store, forward, forward command is to driller's display, and communicate with downhole instrument, forward related command to downhole instrument, the communication data obtaining downhole instrument is transmitted to the ground processing software of PC.Specifically, the major function of terrestrial interface case comprises:
A. gather pressure sensor, hook set sensor, depth encoder data, process data, related data is packaged after be uploaded to PC;
B. the related command (tool-face, hole deviation, orientation, well depth, pressure, date, time, dialog box message etc.) that driller's display issued by PC is forwarded;
C. direct-connected when connecing with underground probe, forward PC and issue the related command of underground probe and forward the related data (inserting tube test, inserting tube configuration, the download of inserting tube data, inserting tube electric current etc.) that underground probe is uploaded to PC.
Terrestrial interface case can be divided into by function: main control module, pressure acquisition module, degree of depth acquisition module, with PC communication interface modules etc.Wherein, main control module, modular pressure, degree of depth acquisition module are three large main modular.The conversion of signal is mainly realized when PC is connected by USB port or RS232 serial ports with interface box with PC communication interface modules.
Main control module comprises MCU, ethernet PHY, the second interface circuit and the 3rd interface circuit, the first front-end processing circuit, power supply output control circuit, source current sample circuit.Described MCU is by being connected with PC with the first interface circuit of PC interface module, described MCU sequentially passes through ethernet PHY, communicate with PC after RJ45, described MCU is connected the second interface circuit and the 3rd interface circuit respectively by the 2nd USART with the 3rd USART, and by the 3rd interface circuit forward command to driller's display, communicated with underground probe by the second interface circuit, the pulse signal of underground probe collection is uploaded to described MCU by described first front-end processing circuit, described MCU is that underground probe is powered by power supply output control circuit, described source current sample circuit will be supplied to the current feedback of underground probe to described MCU.
In the present embodiment, main control module realizes with the Control on Communication of PC, with the Control on Communication of underground probe, with the Control on Communication of driller's display by the MCU that model is STM32F107VC, samples with the Control on Communication of pressure acquisition module, Control on Communication with degree of depth acquisition module, pulser and the output control of underground probe power supply, the AD of source current, the AD of underground probe analog pulse device output waveform signals XCL samples.In order to take into account practicality and stability, in conjunction with current state-of-the-art, selectable dual-port is carried out in the communication of MCU and PC: USART and an Ethernet interface.Wherein, a USART has been divided into again two RS232 serial ports and two USB interfaces, and this part function is realized by " with PC communication interface modules ".Realized by the 2nd USART with the Control on Communication of underground probe.2nd USART, through the second interface circuit process, is converted into a tsb bus.The communication mode that the present embodiment adopts is half-duplex operation, and order transmission frame and response frame alternately transmit in bus.Underground probe comprises plurality of devices, and defined at present have MWD electronics inserting tube, gamma inserting tube, resistivity inserting tube etc.Therefore, TSB communication bus must can carry out multi-address communication.Realized by the 3rd USART with the Control on Communication of driller's display.With the Control on Communication of pressure acquisition module, realized by spi bus and address wire with the Control on Communication of degree of depth acquisition module.MCU can communicate with depth module with modular pressure respectively by selecting corresponding address wire, can be configured it respectively, transmitting order to lower levels, acquisition data etc.MCU also can control the output of pulser and underground probe power supply, gathers the AD value of electric current when power supply exports.During underground probe analog pulse device output waveform signals XCL, carry out AD sampling.
Pressure acquisition module comprises the second front-end processing circuit and double channel A/D converter, and the signal received from standpipe pressure sensor is uploaded to spi bus by A/D converter by the second front-end processing circuit.Wherein, standpipe pressure data are Main Basiss of site work, are down-hole and the aboveground carrier carrying out communicating.In the present embodiment, pressure acquisition module adopts 24 double channel A/D conversion chip CS5532.CS5532 communication interface is SPI interface, and main control MCU is to after its configuration, and CS5532 can select certain passage to carry out continuous AD conversion.During real work, only have a road pressure AD to gather, two paths is for subsequent use each other.CS5532 is external change over clock alone, and its frequency is the active crystal oscillator of 4.9152MHz, independently can carry out AD conversion, and main control MCU can obtain up-to-date AD conversion data to it at any time, gives up the least-significant byte of data, gets high 16.
Degree of depth acquisition module comprises a single-chip microcomputer and the 3rd front-end processing circuit, and the signal that hook set sensor and depth encoder receive is uploaded to single-chip microcomputer by described 3rd front-end processing circuit, after single-chip microcomputer process, be uploaded to described spi bus., its work is that the AD that carries of hook gathers, card sat by the collection of depth encoder count value, drilling tool, the judgement of unfreezing state and power-off time preserve the count value of depth encoder.Degree of depth acquisition module adopts C8051F500 single-chip microcomputer to control, and single-chip microcomputer is communicated with the MCU of main control module by SPI interface.
Front-end processing circuit used in the present invention, interface circuit are all prior aries, for the routine techniques of those skilled in the art is selected.
PC prepackage software on ground and associated drives.PC software on ground system is in charge of miscellaneous equipment, and transmitting order to lower levels, reception process data, display relevant information are the centring systems that human-computer dialogue and order are issued.PC and interface box power supply are ~ 220V civil power.Power convert is corresponding power supply by interface box, exports to underground equipment while connecing (direct-connected), driller's display, pressure sensor, hook set sensor, depth encoder etc. by relevant cables.Can be connected by Serial Port Line, USB line or netting twine between PC with interface box.
Driller's display is used for showing the related contents such as well depth, hole deviation, orientation, tool-face, standpipe pressure, date, time, Running pump time, pass pump time, command information.
The connection of interface box and other outdoor equipment is transferred by Splices cable box.Outdoor equipment comprises driller's display, pressure sensor, hook set sensor and depth encoder etc., and the stube cable that interface box is drawn divide into leader cable and degree of depth cable by function.Leader cable divide into the aobvious cable of pressed-core cable and department by Splices cable box; Degree of depth cable divide into hook download cable and encoder cable by Splices cable box.According to site work situation and requirement, all outdoor equipments all require to have water-proof function, and cable connector adopts waterproof aviation plug.
The relevant informations such as driller's display show tools face, hole deviation, orientation, well depth, pressure, date, time, the instruction of switch pump, switch pump time.
The ground transaucers such as pressure sensor, hook set sensor, depth encoder measure standpipe mud pressure, tourist bus load-carrying, tourist bus height etc. respectively.According to the working condition at scene, the pressure sensor selecting 4-20mA signal to export and hook set sensor.Hook set sensor adopts the sensor measuring dead line tension force to measure hook and carries.This mode easy installation and removal, correctly can judge that the state of card, unfreezing sat by drilling tool, content with funtion demand.The incremental optical-electricity encoder that depth encoder adopts the two pulse signals of phase 90 degree to export, judges tourist bus height by the step-by-step counting of encoder.
In order to allow ground system reliably working, discharge instability and the interference of often power supply, the present invention adopts ups power, and power is 200 watts.
The technical indicator of this ground system various piece is as follows:
A. pressure sensor technique index
| Operating temperature | -20℃—70℃ |
| Measurement category | 0—35MPa |
| Supply voltage | +24V |
| Output signal | 4—20mA |
B. hook set sensor technical indicator
| Operating temperature | -20℃—70℃ |
| Measurement category | 0—40T |
| Certainty of measurement | |
| Supply voltage | +24V |
| Output signal | 4—20mA |
C. depth encoder technical indicator
| Operating temperature | -20℃—70℃ |
| Supply voltage | +10V～+30V |
| Output signal | The voltage pulse that UA, UB phase is 90 degree |
| Often enclose every phase umber of pulse | 40 |
D. driller's display technology index
| Operating temperature | -20℃—70℃ |
| Supply voltage | +18V—+36V(+24V) |
E. terrestrial interface box technology index
| Operating temperature | -20℃—70℃ |
| Supply voltage | AC220V±10％,AC110V |
| Out-put supply | +24V |
| XCL line significant level | +9V |
| TSB holding wire significant level | +15V |
| Digital circuit main power source | +3.3V |
F. interface box and the requirement of the PC communication technology
G. interface box and the requirement of driller's display communication technology
H. interface box and the requirement of the underground probe communication technology
In addition, corresponding Software for Design is had for each part mentioned above.In the Software for Design of ground hardware system, comprise the Software for Design of main control MCU, the Software for Design of degree of depth acquisition module and the Software for Design of driller's display control panel.Main control MCU program mainly realizes the AD conversion of analog pulse data, the AD conversion of current data, and power supply exports and controls, the function such as acquisition, assembling, transmission of communication data.Degree of depth acquisition module control program mainly realizes the AD conversion that hook carries data, the counting of depth encoder data, sits card unfreezing and judges, the reception, transmission etc. of data.Driller's display control panel program primary recipient data, perform relevant display command.Main control MCU program development uses IAREmbeddedWorkbench5.4, and network communication part adopts LWIP protocol stack.Depth module control program, the program development of driller's display control panel use KeiluVision4.
On by reference to the accompanying drawings embodiments of the present invention are explained in detail; but invention is not limited to above-mentioned embodiment; in the ken that this area common technique personnel possess; can also make various change under the prerequisite not departing from present inventive concept, the content after change still belongs to protection scope of the present invention.
Claims (8)
1. a measurement while drilling ground system, is characterized in that: comprise following components: terrestrial interface case, PC, driller's display, standpipe pressure sensor, hook set sensor and depth encoder; Terrestrial interface case comprise main control module, degree of depth acquisition module, pressure acquisition module, with PC communication interface modules; Communicated by a USART between main control module with PC communication interface modules, described main control module and pressure acquisition module, degree of depth acquisition module share a spi bus; Described PC is connected with terrestrial interface case with PC communication interface modules, described main control module by described, the signal collected is uploaded to described pressure acquisition module by described standpipe pressure sensor, described hook set sensor, depth encoder are connected with described degree of depth acquisition module, and described driller's display, underground probe are connected with described main control module.
2. a kind of measurement while drilling ground system as claimed in claim 1, is characterized in that: described main control module comprises MCU, ethernet PHY, the second interface circuit and the 3rd interface circuit, the first front-end processing circuit, power supply output control circuit, source current sample circuit, described MCU is by being connected with PC with the first interface circuit of PC interface module, described MCU sequentially passes through ethernet PHY, communicate with PC after RJ45, described MCU is connected the second interface circuit and the 3rd interface circuit respectively by the 2nd USART with the 3rd USART, and by the 3rd interface circuit forward command to driller's display, communicated with underground probe by the second interface circuit, the pulse signal of underground probe collection is uploaded to described MCU by described first front-end processing circuit, described MCU is that underground probe is powered by power supply output control circuit, described source current sample circuit will be supplied to the current feedback of underground probe to described MCU.
3. a kind of measurement while drilling ground system as claimed in claim 2, it is characterized in that: described pressure acquisition module comprises the second front-end processing circuit and double channel A/D converter, and the signal received from standpipe pressure sensor is uploaded to spi bus by A/D converter by the second front-end processing circuit.
4. a kind of measurement while drilling ground system as claimed in claim 3, it is characterized in that: described degree of depth acquisition module comprises a single-chip microcomputer and the 3rd front-end processing circuit, the signal that hook set sensor and depth encoder receive is uploaded to single-chip microcomputer by described 3rd front-end processing circuit, after single-chip microcomputer process, be uploaded to described spi bus.
5. a kind of measurement while drilling ground system as claimed in claim 4, is characterized in that: the size of current that described pressure sensor and described hook set sensor signal export is 4-20mA.
6. a kind of measurement while drilling ground system according to any one of claim 1-5, is characterized in that: the connection of described terrestrial interface case and driller's display, pressure sensor, hook set sensor, depth encoder is transferred by Splices cable box.
7. a kind of measurement while drilling ground system according to any one of claim 1-5, is characterized in that: described PC and described terrestrial interface case power supply are 220V civil power.
8. a kind of measurement while drilling ground system according to any one of claim 1-5, is characterized in that: described PC and described terrestrial interface case power supply adopt ups power, and power is 200 watts.
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