CN103134855A - Underground gas storage well wall automation comprehensive detection system and detection method - Google Patents
Underground gas storage well wall automation comprehensive detection system and detection method Download PDFInfo
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Abstract
The invention relates to an underground gas storage well wall automation comprehensive detection system and a detection method. The system comprises an upper computer, a position measuring device, a cable lifting device, a direct current power supply and an underground movable detector, wherein the upper computer is placed on a well, and the movable detector is communicated with a device on the well through an armor cable and obtains power. Occupied space of the cable is saved, field operation is convenient, a wall thickness corrosion probe group and a flaw detection probe group are arranged inside the movable detector, detection for the wall thickness corrosion and flaws can be achieved simultaneously, and detection for the gas storage well is complete. Meanwhile, an underground device of the system integrates encouraging, receiving, amplification and signal processing and transmission functions, therefore ultrasonic signals does not need to be transmitted to the ground to be processed for a long distance, fidelity and the signal to noise ratio of the signals are greatly improved, and detection results are accurate.
Description
Technical field
The invention belongs to industrial gas storage well ultrasound examination field, be specifically related to a kind ofly detect and well for storage borehole wall robotization comprehensive detection system and the detection method of crack-detecting for the corrosion of gas storage well borehole wall wall thickness.
Background technology
High pressure underground gas well (hereinafter to be referred as gas storage well) is as a kind of novel gas storage equipment of CNG gas station, that to store the compressed natural gas body be that purpose a kind of special is arranged on underground, pipe vertical pressure vessel, hole structure adopts screw thread (welding) to connect, working pressure is up to 25MPa, has that floor area is little, an advantage such as high safety, operating cost are low, simple and convenient operation and maintenance.But gas storage well sleeve buried underground (the most deeply reaching 260m) due to reasons such as stratum galvanochemistry, fatigue corrosions, can cause the regional area wall thickness reduction, has great potential safety hazard, thereby gas storage well is carried out regular condition detection seems most important.
At present, domestic employing ultrasonic technology is as the Main Means of gas storage well sleeve check, but the detection method that adopts only is confined to the detection of wall thickness corrosion on the one hand, about another kind of critical defect--the detection of crack defect does not but relate to, cause like this detection of gas storage well not comprehensively, cause potential safety hazard thereby easily miss some crucial defectives.In existing equipment, underground equipment and uphole equipment adopt Optical Fiber Transmission on the other hand, although Optical Fiber Transmission has advantages of that transmission speed is fast, transmitted data amount is large, but too fragile during optical fiber operates in the open air, easily cause damage in operating process, and also will be equipped with for delivery of the cable of detecting device to the down-hole except optical fiber, make a set of equipment will be equipped with two cover cables and two cover line rollers have increased equipment complexity.
Summary of the invention
For overcoming above-mentioned deficiency of the prior art, the invention provides a kind of well for storage borehole wall robotization comprehensive detection system and detection method, can utilize a cable to realize the power supply of underground equipment, communication and suspension, and can utilize a set of equipment to complete the detection of wall thickness corrosion and crackle, simplified the formation of equipment, realized that the Comprehensive of borehole wall situation detects.
The technical solution used in the present invention is as follows: a kind of well for storage borehole wall robotization comprehensive detection system, the portable detecting device that comprises aboveground host computer, position-measurement device, cable lifter, direct supply and down-hole, the portable detecting device of down-hole is connected with direct supply with aboveground host computer by sheathed cable, carry out communication and powered, sheathed cable is walked around position-measurement device and cable lifter, realize the position measurement of portable detecting device and at the uniform velocity lifting, sheathed cable two ends also are provided with the communications protocol modular converter; Described cable lifter comprises the roller a that is positioned at well head one side and is positioned at roller b directly over well head, position-measurement device comprises the rotary encoder sum counter, rotary encoder is connected with roller a, and the output signal of rotary encoder is transferred to host computer by USB interface after counter is processed; Described portable detecting device is provided with cable connector, follower and two cavitys, two cavitys are water-stop, be respectively equipped with Ultrasonic Detection electronic module group and ultrasonic probe group in two cavitys, Ultrasonic Detection electronic module group comprises that power module, data transmission module, probe excitation and signal receive amplification module, analog to digital conversion and digital signal processing module, the ultrasonic probe group comprises wall thickness corrosion detection probe group and crack detection probe group, and the probe of each probe group is arranged along cavity circumferencial direction hoop.
Detection system of the present invention is divided into aboveground and down-hole two parts, the portable detecting device of down-hole is connected with host computer with aboveground power supply by sheathed cable, realize power supply and the communication of detecting device, cable also is connected with jacking gear simultaneously, realizes suspension and the lifting of detecting device.Cable is walked around two rollers and is connected on detecting device, and two rollers lay respectively at well head one side and well head top, and the roller of well head top hangs on crane or by stent support, be positioned at well head directly over, guarantee that detecting device vertically drops in well.On the roller of well head one side, rotary encoder is installed, rotates the transmitted signal with roller, and obtain the positional information of detecting device after counter is processed, then give host computer through the USB oral instructions.
Because detecting device is worked under water, must carry out waterproof work, so the present invention is provided with airtight test chamber on detecting device, test chamber has two cavitys, adopts respectively water-stop, and two cavitys hold respectively ultrasonic electronic detection module group and ultrasonic probe group.For recording simultaneously wall thickness corrosion and crack defect data, the present invention is two groups with the ultrasonic probe component, detect respectively two kinds of defective datas, two groups of probes are all arranged along cavity circumferencial direction hoop, maximum magnitude covers the borehole wall, the number of probe and depending on actual detection demand identical with the port number of ultrasonic electronic.Wall thickness corrosion detects and crack detection can adopt the test of once going into the well to carry out simultaneously also can adopting the mode that detects respectively that the wall thickness corrosion is detected and crack detection is gone into the well at twice to test and completed.Ultrasonic Detection electronic module group has been completed the collection of ultrasonic signal and has been processed and directly obtained about wall thickness corrosion and crack defect data, thereby the decay of having avoided ultrasonic signal to cause because of the long-distance cable transmission, the data after processing are carried out data transmission with RS-485 or RS-422 form and have been guaranteed the reliability that transmits.
Described sheathed cable is polycore cable, and the cable outside is surrounded by ground shield, and there is the wire of multiply mutually insulated inside, and wherein two wires are responsible for portable detecting device power supply, and all the other wires are responsible for completing the communication of portable detecting device and host computer.Utilize a cable and a cover line roller can realize power supply, communication and the suspension of detecting device, and the sheathed cable durability is strong, is more suitable for the field operation environment.
Underground equipment of the present invention and uphole equipment adopt RS-232 serial port communicating protocol swap data, but because RS-232 communication modes transmission range is limited, therefore at sheathed cable two ends, RS-232/RS-485 modular converter or RS-232/RS-422 modular converter are set, the single-ended RS-232 communication signal of host computer output is converted to the RS-485 of both-end difference or the signal of RS-422 pattern is carried by sheathed cable again, passes to detecting device after the signal arrival cable other end converts back single-ended RS-232 signal again.Specifically select RS-485 pattern or RS-422 pattern to depend on the number of cable conductor.As be that the six following cables of core are selected the RS-485 pattern, be six cores or more employing RS-422 patterns as cable.
The present invention is provided with wall thickness corrosion detection probe and crack detection probe simultaneously in detecting device, wall thickness corrosion detection probe group and crack detection probe group can be enumerated in same cavity up and down, detect simultaneously, also can divide to be positioned at two cavitys and to detect respectively.
Host computer mentioned above is notebook computer, and system communication and software for display are installed in it, the defective data that obtains through the RS-232 serial ports respectively with integrate through the detector location data that the USB mouth obtains, shows in the mode of C scanning and curve.
First install each equipment before said detecting system is used, host computer, direct supply, cable roller are positioned at inspection vehicle, and operating personnel are the operation detection system onboard.Cable is walked around successively two rollers of jacking gear, and with a roller supporting directly over well head, another roller is placed in well head one side, cable one end is connected with host computer with direct supply, the other end is connected with connector on detecting device.The operating process of detection system is as follows:
(1), opening power, open cable lifter, portable detecting device is hung in the gas storage well well head, just having submerged with the detector probe group, the water surface is as the criterion in well.
(2), open the detection software of host computer, carry out the initialization setting, arrange complete after startup scanning, system enters the autoscan state and begins to detect; The initial state meeting prompting operation person input system initial setup file name of software, after the filename input, system can be configured by the parameter of file to system is set automatically, the operator can check one by one that the original signal of each passage is in normal operating state to guarantee system, the operator can arrange by the detector parameters of man-machine interface to the down-hole, after setting is completed, by the scanning start button, system begins scanning.
(3), start jacking gear and make the detecting device uniform descent, Ultrasonic Detection electronic module group is by the emission ultrasonic signal of instruction incentive probe successively and receive ultrasonic signal, amplify, obtain wall thickness corrosion or crack defect information by the digital signal processing module analyzing and processing after analog to digital conversion, data result is passed to host computer through sheathed cable; The lifting of detecting device and the work of probe are carried out simultaneously.The rotary encoder synchronous working sends with pulse signal corresponding to handling cable length, and pulse signal converts detector location numerical value to after counter is processed, be uploaded to host computer through the USB mouth.
(4), host computer is caught the data of coming to detecting device and is combined C scintigram and the strip-chart of rear generation real-time update with the position data that position-measurement device provides result is shown;
(5), detecting device arrives the shaft bottom, autoscan finishes, the system storage scanning result also is back to original state;
(6), operator's log-on data is browsed the software evaluation scanning result, and is rechecked defect information with manual type; Point out if any wall thickness corrosion or crack defect in scanning result, the operator should move on to system the relevant position and recheck ultrasonic signal in this position with manual type, the defective that autoscan obtains is confirmed, as confirmed as defective and should store the original signal at this place with as determining defects foundation more specifically.
(7), manually recheck and complete, the operator is raised to detecting device outside well, completes the detection of this well.
The present invention has following advantage:
1, wall thickness corrosion detection and crack detection are combined, make the detection of gas storage well more comprehensively, further guarantee the operation security of gas storage well;
2, the detecting device of native system has been integrated the probe excitation, signal receives amplification, signal processing and transfer function, thereby making ultrasonic signal be transferred to ground through long distance of wire processes again, greatly improved fidelity and the signal to noise ratio (S/N ratio) of signal, made testing result more accurately and reliably;
3, the data crossed of detector processes are transmitted by RS-485 or the RS-422 signal that single-ended RS-232 signal is converted to difference through the communications protocol modular converter, have guaranteed accuracy and the reliability of signal transmission.
4, the single sheathed cable of signal transmission employing and power sharing, simplified the equipment formation, greatly facilitates field operation, reduced the failure rate that causes due to cable.
Description of drawings
Below in conjunction with accompanying drawing, embodiments of the present invention are described in detail:
Fig. 1 is system of the present invention composition diagram;
Fig. 2 is system chart of the present invention;
Fig. 3 is overhaul flow chart of the present invention;
Fig. 4 is portable detector arrangement schematic diagram;
Fig. 5 is embodiment 1 probe group Pareto diagram;
Fig. 6 is embodiment 2 probe group Pareto diagrams;
in figure, 1, host computer, 2, the cable roller, 3, sheathed cable, 4, roller a, 5, roller b, 6, support, 7, portable detecting device, 8, rotary encoder, 9, counter, 10, direct supply, 11, the RS-232/RS-485 modular converter, 12, Ultrasonic Detection electronic module group, 121, power module, 122, data transmission module, 123, analog to digital conversion and digital signal processing module, 124, probe excitation and signal receive amplification module, 13, the ultrasonic probe group, 131, wall thickness corrosion detection probe group, 132, crack detection probe group, 14, cable connector, 15, the upper end follower, 16, the detected electrons chamber, 17, the lower end follower, 18, the probe chamber.
Embodiment
A kind of well for storage borehole wall robotization comprehensive detection system, as shown in Figure 1, the portable detecting device 7 that comprises aboveground host computer 1, position-measurement device, cable lifter, cable roller 2, direct supply 10 and down-hole, host computer 1, cable roller 2 and direct supply 10 are positioned on inspection vehicle, operating personnel operate detection system on inspection vehicle, host computer 1 adopts notebook computer, system communication is housed in it and detects software.Described cable lifter comprises the roller a4 that is positioned at well head one side and is positioned at roller b5 directly over well head, and roller b5 is fixed on the well head top by support 6.Underground equipment carries out communication and power supply by sheathed cable 3, sheathed cable 3 is coiled on cable roller 2, one end is connected with direct supply with host computer 1 and is connected, the other end is connected with the portable detecting device 7 of down-hole after walking around two rollers, described sheathed cable 3 is polycore cable, the cable outside is surrounded by ground shield, there is the wire of multiply mutually insulated inside, wherein two wires are responsible for portable detecting device 7 power supplies, all the other wires are responsible for completing the communication of portable detecting device 7 and host computer 1, and sheathed cable 3 integral body are completed the suspension lifting of detecting device.Sheathed cable 3 two ends also are provided with RS-232/RS-485 modular converter 11, convert the RS-232 signal to RS-485 again by cable transmission, convert the RS-232 signal behind the in-position to again, are convenient to detect the long Distance Transmission of data.Position-measurement device comprises rotary encoder 8 sum counters 9, and rotary encoder 8 is connected with roller a4, and the output signal of rotary encoder 8 is transferred to host computer 1 by USB interface after counter 9 is processed.
Described portable detecting device 7 is provided with cable connector 14, upper end follower 15, detected electrons chamber 16, lower end follower 17 and probe chamber 18 successively, cable connector 14 is used for connecting the connector of sheathed cable 3, and two followers are used for guaranteeing that the centering of detector probe group and the borehole wall is to guarantee measurement effect.detected electrons chamber 16 and the chamber 18 of popping one's head in are water-stop, be used for respectively holding Ultrasonic Detection electronic module group 12 and ultrasonic probe group 13 in two cavitys, Ultrasonic Detection electronic module group 12 comprises power module 121, data transmission module 122, probe excitation and signal receive amplification module 124, analog to digital conversion and digital signal processing module 123, these module groups can be divided into digital module and analog module two classes by function, digital module be used for to receive the instruction of host computer and the parameter of detecting device is read or changes, also the ultrasonic signal that receives is carried out analog to digital conversion and directly processes wall thickness corrosion or the crack defect information of drawing, corresponding is analog to digital conversion and digital signal processing module 123.Analog module can encourage probe by sequential and the instruction that digital module provides, then passes digital module back after receiving the processing such as amplification, and what analog module was corresponding is probe excitation and signal reception amplification module 124.The parameters of Ultrasonic Detection electronic module can be read and be revised by host computer by sheathed cable.The defective data that host computer 1 will obtain through the RS-232 serial ports and integrating through the detector location data that USB interface obtains generates the testing result image.
Embodiment 1 ultrasonic probe group 13 comprises wall thickness corrosion detection probe group 131 and crack detection probe group 132, two probe groups are enumerated up and down and are positioned at same cavity, can be as shown in Fig. 5-a, crack detection probe group 132 up, wall thickness corrosion detection probe group 131 below, can be also as shown in Fig. 5-b, crack detection probe group 132 below, wall thickness corrodes detection probe group 131 up, and the probe of each probe group is arranged along cavity circumferencial direction hoop.The wall thickness corrosion detects and crack detection is once gone into the well, and test is carried out simultaneously.
Embodiment 2 ultrasonic probe groups 13 comprise wall thickness corrosion detection probe group 131 and crack detection probe group 132, two probe groups are positioned at respectively two cavitys, Fig. 5-a is crack detection probe group 132 chambeies, place, Fig. 5-b is wall thickness corrosion detection probe group 131 chambeies, place, and the probe of each probe group is arranged along cavity circumferencial direction hoop.The wall thickness corrosion detects and crack detection is gone into the well at twice, and test is completed.
First install each equipment before said detecting system is used, host computer 1, direct supply 10, cable roller 2 are positioned at inspection vehicle, and operating personnel are the operation detection system onboard.Cable is walked around successively two rollers of jacking gear, and roller b5 is supported on directly over well head, roller a4 is placed in well head one side, and cable one end is connected with host computer with direct supply 10 and is connected, and the other end is connected with connector on detecting device.The testing process of detection system as shown in Figure 3, specific operation process is as follows:
(1), opening power, open cable lifter, portable detecting device 7 is hung in the gas storage well well head, just having submerged with the detector probe group, the water surface is as the criterion in well.
(2), open the detection software of host computer 1, carry out the initialization setting, arrange complete after startup scanning, system enters the autoscan state and begins to detect; The initial state meeting prompting operation person input system initial setup file name of software, after the filename input, system can be configured by the parameter of file to system is set automatically, the operator can check one by one that the original signal of each passage is in normal operating state to guarantee system, the operator can arrange by the detector parameters of man-machine interface to the down-hole, after setting is completed, by the scanning start button, system begins scanning.
(3), start jacking gear and make the detecting device uniform descent, Ultrasonic Detection electronic module group 12 is by the emission ultrasonic signal of instruction incentive probe successively and receive ultrasonic signal, amplify, obtain wall thickness corrosion or crack defect information by the digital signal processing module analyzing and processing after analog to digital conversion, data result is passed to host computer 1 through sheathed cable 3; The lifting of detecting device and the work of probe are carried out simultaneously.Rotary encoder 8 synchronous workings send with pulse signal corresponding to handling cable length, and pulse signal converts detector location numerical value to after counter is processed, be uploaded to host computer through the USB mouth.
(4), host computer 1 is caught the data of coming to detecting device and is combined C scintigram and the strip-chart of rear generation real-time update with the position data that position-measurement device provides result is shown;
(5), detecting device arrives the shaft bottom, autoscan finishes, the system storage scanning result also is back to original state;
(6), operator's log-on data is browsed the software evaluation scanning result, and is rechecked defect information with manual type; Point out if any wall thickness corrosion or crack defect in scanning result, the operator should move on to system the relevant position and recheck ultrasonic signal in this position with manual type, the defective that autoscan obtains is confirmed, as confirmed as defective and should store the original signal at this place with as determining defects foundation more specifically.
(7), manually recheck and complete, the operator is raised to detecting device outside well, completes the detection of this well.
Claims (8)
1. well for storage borehole wall robotization comprehensive detection system, comprise aboveground host computer (1), position-measurement device, cable lifter, the portable detecting device (7) of direct supply (10) and down-hole, it is characterized in that: the portable detecting device of down-hole is connected 10 with aboveground host computer (1) with direct supply by sheathed cable (3)) be connected, carry out communication and powered, sheathed cable (3) is walked around position-measurement device and cable lifter, realize position measurement and the at the uniform velocity lifting of portable detecting device (7), sheathed cable (3) two ends also are provided with the communications protocol modular converter, described cable lifter comprises the roller a(4 that is positioned at well head one side) and be positioned at roller b(5 directly over well head), position-measurement device comprises rotary encoder (8) sum counter (9), rotary encoder (8) and roller a(4) be connected, the output signal of rotary encoder (8) is transferred to host computer (1) by USB interface after counter (9) is processed, described portable detecting device (7) is provided with cable connector (14), follower and two cavitys, two cavitys are water-stop, be respectively equipped with Ultrasonic Detection electronic module group (12) and ultrasonic probe group (13) in two cavitys, Ultrasonic Detection electronic module group (12) comprises power module (121), data transmission module (122), probe excitation and signal receive amplification module (124), analog to digital conversion and digital signal processing module (123), ultrasonic probe group (13) comprises wall thickness corrosion detection probe group (131) and crack detection probe group (132), the probe of each probe group is arranged along cavity circumferencial direction hoop.
2. well for storage borehole wall robotization comprehensive detection system according to claim 1, it is characterized in that: described sheathed cable (3) is polycore cable, the cable outside is surrounded by ground shield, there is the wire of multiply mutually insulated inside, wherein two wires are responsible for portable detecting device (7) power supply, and all the other wires are responsible for completing the communication of portable detecting device (7) and host computer (1).
3. well for storage borehole wall robotization comprehensive detection system according to claim 1 and 2 is characterized in that: sheathed cable (3) two ends are provided with RS-232/RS-485 modular converter (11).
4. well for storage borehole wall robotization comprehensive detection system according to claim 1 and 2 is characterized in that: sheathed cable (3) two ends are provided with the RS-232/RS-422 modular converter.
5. well for storage borehole wall robotization comprehensive detection system according to claim 1 is characterized in that: wall thickness corrosion detection probe group (131) and crack detection probe group (132) are enumerated in same cavity up and down.
6. well for storage borehole wall robotization comprehensive detection system according to claim 1 is characterized in that: wall thickness corrosion detection probe group (131) and crack detection probe group (132) are divided and are positioned at two cavitys.
7. well for storage borehole wall robotization comprehensive detection system according to claim 1, it is characterized in that: described host computer (1) is notebook computer, and system communication and software for display are installed in it.
8. a well for storage borehole wall robotization method for comprehensive detection, is characterized in that comprising the steps:
(1), opening power, open cable lifter, portable detecting device is hung in the gas storage well well head, just having submerged with the detector probe group, the water surface is as the criterion in well;
(2), open the detection software of host computer, carry out the initialization setting, arrange complete after startup scanning, system enters the autoscan state and begins to detect;
(3), start jacking gear and make the detecting device uniform descent, Ultrasonic Detection electronic module group is by the emission ultrasonic signal of instruction incentive probe successively and receive ultrasonic signal, amplify, obtain wall thickness corrosion or crack defect information by the digital signal processing module analyzing and processing after analog to digital conversion, data result is passed to host computer through sheathed cable; The rotary encoder synchronous working sends with pulse signal corresponding to handling cable length, and pulse signal converts detector location numerical value to after counter is processed, be uploaded to host computer through the USB mouth;
(4), host computer is caught the data of coming to detecting device and is combined C scintigram and the strip-chart of rear generation real-time update with the position data that position-measurement device provides result is shown;
(5), detecting device arrives the shaft bottom, autoscan finishes, the system storage scanning result also is back to original state;
(6), operator's log-on data is browsed the software evaluation scanning result, and is rechecked defect information with manual type;
(7), manually recheck and complete, the operator is raised to detecting device outside well, completes the detection of this well.
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| CN104391036A (en) * | 2014-12-09 | 2015-03-04 | 中国石油集团川庆钻探工程有限公司 | Gas storage well hole diameter defect detection method |
| CN104713946A (en) * | 2015-04-01 | 2015-06-17 | 无锡昌纳德检测科技有限公司 | Nondestructive testing device for compressed natural gas storage well |
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| CN107328512A (en) * | 2017-07-05 | 2017-11-07 | 魏满妹 | A kind of implementation method by detection elevator rope tension force of fishing |
| US11073011B2 (en) | 2017-07-24 | 2021-07-27 | Halliburton Energy Services, Inc. | Methods and systems for wellbore integrity management |
| CN108645914A (en) * | 2018-07-04 | 2018-10-12 | 安徽省特种设备检测院 | CNG gas storage well sleeves detecting system and the comprehensive probe of CNG gas storage well sleeves detection |
| CN109115892A (en) * | 2018-09-14 | 2019-01-01 | 安徽省特种设备检测院 | Tube wall detection device, detection system and the detection method of vertical pipeline |
| CN109557181A (en) * | 2018-12-03 | 2019-04-02 | 四川科特检测技术有限公司 | A kind of wellhead assembly on-line checking technique |
| CN109623879A (en) * | 2019-01-28 | 2019-04-16 | 浙江省特种设备检验研究院 | A kind of gas storage well detection robot test platform |
| CN109946375A (en) * | 2019-03-12 | 2019-06-28 | 山东省特种设备检验研究院有限公司 | Detection probe component and detection method in long-distance pipe piezoelectric ultrasonic |
| CN111624262A (en) * | 2020-06-02 | 2020-09-04 | 鞍山长风无损检测设备有限公司 | Flaw detection method based on phased array ultrasonic sector scanning partition |
| CN111964602A (en) * | 2020-08-17 | 2020-11-20 | 安徽省特种设备检测院 | Method for detecting deformation of small-diameter underground gas storage well shaft |
| CN114992523A (en) * | 2022-06-07 | 2022-09-02 | 国家石油天然气管网集团有限公司 | System and method for monitoring pipeline running state |
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