CN111981999A - Detection apparatus for minor diameter underground gas storage well pit shaft warp - Google Patents

Detection apparatus for minor diameter underground gas storage well pit shaft warp Download PDF

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Publication number
CN111981999A
CN111981999A CN202010827181.0A CN202010827181A CN111981999A CN 111981999 A CN111981999 A CN 111981999A CN 202010827181 A CN202010827181 A CN 202010827181A CN 111981999 A CN111981999 A CN 111981999A
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China
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deformation
gas storage
shaft
storage well
armored cable
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王仁涛
程江辉
胡孔友
夏智
刘红晓
谢赛南
凌兵
洪勇
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ANHUI SPECIAL EQUIPMENT INSPECTION INSTITUTE
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ANHUI SPECIAL EQUIPMENT INSPECTION INSTITUTE
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Priority to CN202010827181.0A priority Critical patent/CN111981999A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/22—Measuring arrangements characterised by the use of optical techniques for measuring depth

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  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The invention discloses a detection device for deformation of a small-diameter underground gas storage well shaft, which comprises: elevating gear, data processing terminal and detection probe. The data processing terminal is electrically connected with one end of the armored cable. Detect and visit pipe and armored cable's other end electric connection, and detect and visit the pipe and include: the device comprises a probe tube shell, a deformation gyroscope, an underwater scanner and a circuit integrated cabin. The deformation gyroscope is sealed in the probe tube shell. The underwater scanner is sealed in the probe housing. The circuit integrated cabin is sealed in the probe tube shell, and the circuit integrated cabin is electrically connected with the other end of the armored cable. The servo motor drives the armored cable winch to rotate through the encoder, so that the armored cable and the detection probe are driven to longitudinally move in a shaft of the gas storage well, and the shaft is filled with water. Therefore, the detection device for the deformation of the small-diameter underground gas storage well shaft can detect the related deformation defects at the casing coupling in the shaft.

Description

Detection apparatus for minor diameter underground gas storage well pit shaft warp
Technical Field
The invention relates to the technical field of gas storage well detection, in particular to a detection device for deformation of a small-diameter underground gas storage well shaft.
Background
The CNG gas storage well is a tubular vertical pressure vessel installed underground and used for storing compressed natural gas, and has a history of use in China for nearly 30 years. The well body structure of the gas storage well is formed by connecting sleeves through threaded couplings, the working pressure is up to 25MPa, and the gas storage well has the advantages of small occupied area, high safety, low operating cost, simplicity and convenience in operation and maintenance and the like. However, the shaft of the gas storage well is deeply buried underground, the maximum buried depth can reach 260m, and the value of the ground stress of the shaft is gradually increased along with the increase of the buried depth. The shaft is extruded by high ground stress and has a dislocation effect (the buried depth is large and the ground stress of a seismic zone area is high), and deformation defects such as shaft inclination, bending, sedimentation, migration and the like are easy to occur. In addition, most CNG gas storage wells built before 2008 do not adopt well cementation cement for casing reinforcement and corrosion prevention, so that the well bores of the gas storage wells are affected by formation electrochemistry, underground fluid corrosion and the like. The gas storage well shaft which is put into use for 10 years or more has deep defects of corrosion thinning, deformation and the like, the effect of resisting underground high-ground stress extrusion dislocation of the gas storage well shaft is further reduced, the gas storage well has the defects of shaft deformation which does not cause wide attention such as shaft inclination, bending, sedimentation, deviation and the like, and serious hidden danger is brought to the use safety of the gas storage well.
Taking Anhui province as an example, research results of application of deformation detection and imaging technology in gas storage well casing detection in the scientific and technological plan project of the market supervision and management bureau of Anhui province show that the number of gas storage wells built in Anhui province before 2008 is 187 and accounts for 45.5% of the number of the gas storage wells in Anhui province, the upper well shaft parts and the well shaft parts in the part of the gas storage wells show serious corrosion and thinning, and the part of the gas storage wells are positioned in the earthquake fracture zone area of Anhui province (as shown in figure 1), so that 6 gas storage wells can not be normally used due to serious deformation defects of the well shafts and are judged to be waste.
Therefore, in the gas storage well which is put into service for 10 years or more, when the well bore is corroded and thinned and is subjected to high ground stress and misextrusion, the detection of specific deformation defects such as inclination, bending, sedimentation, deviation and the like of the well bore of the gas storage well is of particular concern in the development of periodic inspection of the gas storage well. At present, the national gas storage well regular inspection means mainly detects the wall thickness of a gas storage well casing pipe through an ultrasonic probe. For example, chinese patent publication No. CN103134855B, published as No. 8/12 in 2015, discloses an automatic comprehensive detection system and method for a wall thickness corrosion detection and crack detection of an underground gas storage well. The system comprises an upper computer on the well, a position measuring device, a cable operation control system, a direct-current power supply and a mobile detector under the well. The movable detector is internally provided with a wall thickness corrosion detection probe group and a crack detection probe group, so that the wall thickness corrosion and the crack can be simultaneously detected. However, the patent has the following disadvantages: for a gas storage well with severe corrosion, if the casing of the gas storage well is deformed, inclined, bent, settled and the like due to the thinning of the casing, the conventional ultrasonic thickness measurement method provided by the patent cannot detect the defects.
Meanwhile, the threaded coupling connected between the sleeves of the gas storage well is often a stress concentration point of the gas storage well in a working state. The position is a weak link of safe operation of the gas storage well, the situations that a coupling is corroded and deformed easily, thread teeth at the coupling are corroded and loosened easily and the like are caused, and the coupling is deformed under the action of underground high-stress extrusion and dislocation, so that adjacent casings are inclined and/or bent, even the coupling is developed to leak, and the use safety of the gas storage well is seriously damaged. The existing gas storage well inspection technology cannot detect the related deformation defects at the coupling of the casing.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a detection device for detecting the deformation of a small-diameter underground gas storage well shaft, which can detect the related deformation defects at a casing coupling in the well shaft.
In order to achieve the above object, the present invention provides a device for detecting deformation of a small diameter underground gas storage well shaft, comprising: elevating gear, data processing terminal and detection probe. The lifting device comprises a winch, a servo motor, an encoder, an armored cable winch and an armored cable, wherein the armored cable is wound on the armored cable winch, and the servo motor is installed on the winch. The data processing terminal is electrically connected with one end of the armored cable. Detect and visit pipe and armored cable's other end electric connection, and detect and visit the pipe and include: the device comprises a probe tube shell, a deformation gyroscope, an underwater scanner and a circuit integrated cabin. The deformation gyroscope is sealed in the probe tube shell. The underwater scanner is sealed in the probe housing. The circuit integration cabin is sealed in the probe tube shell, the circuit integration cabin is electrically connected with the other end of the armored cable, and the deformation gyroscope and the underwater scanner are electrically connected with the data processing terminal through the circuit integration cabin. The servo motor drives the armored cable winch to rotate through the encoder, so that the armored cable and the detection probe are driven to longitudinally move in a shaft of the gas storage well, and the shaft is filled with water. The deformation gyroscope is used for acquiring deformation information of a shaft, and the underwater scanner is used for scanning deformation of the shaft and constructing a three-dimensional model of the inner wall of the shaft. The data processing terminal is used for receiving deformation information of the shaft and the three-dimensional model of the inner wall of the shaft, displaying and processing the deformation information and the three-dimensional model.
In an embodiment of the present invention, the outer surface of the probe tube housing is covered with a protective layer, the protective layer is provided with a plurality of openings, and the periphery of the probe tube housing is provided with a plurality of centralizers, which are adjustable centralizers.
In an embodiment of the present invention, the fiber coupled laser of the underwater scanner is twelve single-channel laser probes, and the twelve single-channel laser probes are circumferentially spaced along the inner wall of the probe housing.
In an embodiment of the present invention, the deformation gyroscope includes a plurality of vertically arranged fiber optic gyroscopes for collecting angle information of the wellbore and a plurality of vertically arranged three-dimensional gravity acceleration sensors for improving measurement accuracy of a wellbore inclination angle.
In an embodiment of the invention, a depth meter is arranged at the winch of the armored cable, the depth meter is used for recording depth information of the placement of the detection probe, the depth meter is electrically connected with the data processing terminal through the armored cable, and the depth meter transmits real-time paying-off speed information of the armored cable and descending depth information of the detection probe to the data processing terminal.
In one embodiment of the invention, the armored cable winch can pay out 700m at the longest, and the cable paying out speed ranges from 0.01m/s to 0.9 m/s.
In an embodiment of the present invention, the deformation information of the wellbore includes inclination, angle, azimuth, curvature, settling amount, and offset of the wellbore and the single casing of the gas storage well to be measured and the threaded coupling.
In an embodiment of the present invention, when the deformation gyroscope does not detect a defect, only four single-channel laser probes of the fiber-coupled laser of the underwater scanner are turned on for performing uninterrupted measurement, and when the deformation gyroscope detects a defect, twelve single-channel laser probes of the fiber-coupled laser of the underwater scanner are turned on for performing measurement.
In one embodiment of the present invention, the fiber coupled laser employs a resonant cavity without optical optics.
Compared with the prior art, according to the detection device for detecting the deformation of the small-diameter underground gas storage well shaft, deformation information of the gas storage well shaft and the shaft coupling position is identified through the deformation gyroscope, the deformation information is scanned through the underwater scanner, a three-dimensional model of the inner wall surface of the shaft to be detected is constructed, the depth information of the detecting probe at the moment is recorded through the depth meter, and the three-dimensional model of the deformation of the sleeve coupling position of the gas storage well and the depth information are respectively sent to the data processing terminal to be displayed, so that detection personnel can analyze the deformation conditions of the gas storage well shaft and the shaft coupling position and determine the comprehensive safe use condition of the gas storage well to be detected. And the detection efficiency can be improved through the two optical fiber gyroscopes, and the missing detection and detection errors caused by limited acquired data volume of a single optical fiber gyroscope are reduced, so that the accuracy of the detected information is ensured.
Drawings
FIG. 1 is a schematic diagram showing the distribution of gas storage wells along the lines of the seismic fault zone and the Tan's fault zone in Anhui region;
FIG. 2 is a schematic diagram of a detection probe of a device for detecting deformation of a small diameter underground gas storage well bore according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the connection between the detection probe of the device for detecting deformation of a small-diameter underground gas storage well shaft and a data processing terminal according to an embodiment of the invention;
FIG. 4 is an illustration of the operation of a small diameter subterranean gas storage well bore deformation detection device according to an embodiment of the present invention;
FIG. 5 is a schematic view of the detection principle of the underwater scanner of the detection device for the deformation of the small diameter underground gas storage well shaft according to the embodiment of the present invention;
FIG. 6 is a schematic diagram of the structure of the bore of the gas storage well to be tested of the apparatus for detecting deformation of the bore of a small diameter underground gas storage well according to one embodiment of the present invention;
fig. 7 is a schematic view showing a detection flow of the detection device for detecting deformation of the small-diameter underground gas storage well shaft according to an embodiment of the present invention.
Description of the main reference numerals:
10-probe casing, 20-circuit integrated cabin, 30-armored cable, 40-underwater scanner, 50-centralizer, 60-deformation gyroscope, 70-lifting device, 80-depth gauge, 100-detection probe, 200-data processing terminal, 300-casing, 410-armored cable winch, 420-winch and 500-threaded coupling.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Fig. 2 is a schematic structural view of a detection probe of a device for detecting deformation of a small-diameter underground gas storage well casing according to an embodiment of the present invention. Fig. 3 is a schematic diagram of the connection between the detection probe of the device for detecting deformation of a small-diameter underground gas storage well shaft and the data processing terminal according to an embodiment of the invention. FIG. 4 is an illustration of the operation of a small diameter subterranean gas storage well bore deformation detection device according to an embodiment of the present invention. Fig. 5 is a schematic view of the detection principle of the underwater scanner of the detection device for the deformation of the small-diameter underground gas storage well shaft according to the embodiment of the invention. Fig. 6 is a schematic view showing the structure of a shaft of a gas storage well to be tested of the apparatus for detecting deformation of the shaft of a small-diameter underground gas storage well according to an embodiment of the present invention.
As shown in fig. 1 to 6, a small diameter underground gas storage well bore deformation detecting apparatus according to a preferred embodiment of the present invention comprises: elevating gear 70, data processing terminal 200 and detection probe 100. The lifting device 70 comprises a winch 420, a servo motor, an encoder, an armored cable winch and an armored cable 30, wherein the armored cable 30 is wound on the armored cable winch, and the servo motor is installed on the winch 420. The data processing terminal 200 is electrically connected to one end of the armored cable 30. Detect probe 100 and armored cable 30's other end electric connection, and detect probe 100 and include: a probe housing 10, a deformation gyroscope 60, an underwater scanner 40 and a circuit integrated cabin 20. The deformable gyroscope 60 is sealed in the probe housing 10. The underwater scanner 40 is sealed in the probe housing 10. The circuit integrated cabin 20 is sealed in the probe casing 10, the circuit integrated cabin 20 is electrically connected with the other end of the armored cable 30, and the deformation gyroscope 60 and the underwater scanner 40 are both electrically connected with the data processing terminal 200 through the circuit integrated cabin 20. The servo motor drives the armored cable winch to rotate through the encoder, so that the armored cable 30 and the detection probe 100 are driven to longitudinally move in a shaft of the gas storage well, and the shaft is filled with water. The deformation gyroscope 60 is used for acquiring deformation information of a shaft, and the underwater scanner 40 is used for scanning deformation of the shaft and constructing a three-dimensional model of the inner wall of the shaft. The data processing terminal 200 is configured to receive deformation information of the wellbore and a three-dimensional model of an inner wall of the wellbore, and display and process the deformation information and the three-dimensional model.
In an embodiment of the present invention, the outer surface of the probe casing 10 is coated with a protective layer, the protective layer is provided with a plurality of openings, and a plurality of centralizers 50 are installed on the outer periphery of the probe casing 10, wherein the centralizers 50 are adjustable centralizers 50. The fiber coupled laser of the underwater scanner 40 is twelve single-channel laser probes, and the twelve single-channel laser probes are circumferentially arranged along the inner wall of the probe casing 10 at intervals.
In an embodiment of the present invention, the deformation gyroscope 60 includes a plurality of vertically arranged fiber optic gyroscopes for acquiring angle information of the wellbore and a plurality of vertically arranged three-dimensional gravity acceleration sensors for improving measurement accuracy of a wellbore inclination angle. The armored cable winch is provided with a depth meter 80, the depth meter 80 is used for recording depth information of the detection probe 100, the depth meter 80 is electrically connected with the data processing terminal 200 through the armored cable 30, and the depth meter 80 transmits real-time paying-off speed information of the armored cable 30 and descending depth information of the detection probe 100 to the data processing terminal 200.
Fig. 7 is a schematic view showing a detection flow of the detection device for detecting deformation of the small-diameter underground gas storage well shaft according to an embodiment of the present invention. As shown in fig. 7, cleaning the shaft of the gas storage well to be measured, and filling the shaft to be measured with clear water to the wellhead; the detection probe 100 is inserted into the shaft from the ground through the lifting device 70, so that the detection probe 100 is immersed below the water surface in the shaft; starting the data processing terminal 200 and performing initialization setting; driving the lifting device 70 to make the detection probe 100 descend in the shaft and perform detection; the data processing terminal 200 receives, displays and processes the information collected by the detection probe 100; wherein, elevating gear 70 includes winch 420, servo motor, encoder, armoured cable capstan and armoured cable 30, and armoured cable 30 twines on the armoured cable capstan, and servo motor installs on winch 420. Wherein, the data processing terminal 200 is electrically connected with one end of the armored cable 30. The detection probe 100 is electrically connected to the other end of the armored cable 30, and the detection probe 100 includes a probe housing 10, a deformation gyroscope 60, an underwater scanner 40, and a circuit integrated cabin 20. Wherein, the deformation gyroscope 60, the underwater scanner 40 and the circuit integrated cabin 20 are all sealed in the probe casing 10. The circuit integrated cabin 20 is electrically connected to the other end of the armored cable 30, and the deformation gyroscope 60 and the underwater scanner 40 are both electrically connected to the data processing terminal 200 through the circuit integrated cabin 20. The servo motor drives the armored cable winch to rotate through the encoder, so as to drive the armored cable 30 and the detection probe 100 to move longitudinally in the shaft. The deformation gyroscope 60 is used for acquiring deformation information of a shaft, and the underwater scanner 40 is used for scanning deformation of the shaft and constructing a three-dimensional model of the inner wall of the shaft. The data processing terminal 200 is configured to receive deformation information of the wellbore and a three-dimensional model of an inner wall of the wellbore, and display and process the deformation information and the three-dimensional model.
In an embodiment of the present invention, the outer surface of the probe casing 10 is coated with a protective layer, the protective layer is provided with a plurality of openings, and a plurality of centralizers 50 are installed on the outer periphery of the probe casing 10, wherein the centralizers 50 are adjustable centralizers 50. The fiber coupled laser of the underwater scanner 40 is twelve single-channel laser probes, and the twelve single-channel laser probes are circumferentially arranged along the inner wall of the probe casing 10 at intervals.
In an embodiment of the present invention, the deformation gyroscope 60 includes a plurality of vertically arranged fiber optic gyroscopes for acquiring angle information of the wellbore and a plurality of vertically arranged three-dimensional gravity acceleration sensors for improving measurement accuracy of a wellbore inclination angle. The armored cable winch is provided with a depth meter 80, the depth meter 80 is used for recording depth information of the detection probe 100, the depth meter 80 is electrically connected with the data processing terminal 200 through the armored cable 30, and the depth meter 80 transmits real-time paying-off speed information of the armored cable 30 and descending depth information of the detection probe 100 to the data processing terminal 200.
The applicant finds that, as shown in fig. 6, two adjacent casings 300 are connected through a threaded coupling 500 (a plurality of casings 300 are combined to form a wellbore), the threaded coupling 500 is often a stress concentration point of a gas storage well in an operating state, the position is a weak link for safe operation of the gas storage well, corrosion deformation of the coupling, corrosion loosening of thread teeth at the coupling and the like are easy to occur, and deformation of the coupling is caused by underground high-stress extrusion fracture, so that the adjacent casings 300 are inclined and/or bent, and even leakage at the coupling is developed. At this time, the existing ultrasonic wall thickness detection method is limited by itself, and only by means of a gyroscope technology, the direction can be determined only for the defects of inclination, bending, deformation and the like among the gas storage well casings 300, and the specific shape and the specific size of the defect can not be obtained. It should be noted that, the gyroscope measurement technology is mainly used for measuring the inclination and offset conditions of the pipe casing in the construction of the crude oil pipeline, and the diameter of the crude oil pipeline is generally 200 and 320mm, so the pipe diameter of the supporting gyroscope measurement equipment is also larger. And because the designed wall thickness value of the crude oil pipeline is larger, the pressure value in the casing is smaller, and the inclination and the deviation of the casing installation are generally measured and controlled only during construction. However, there is little attention paid to the conditions of settling, shifting, etc. of a crude oil pipeline due to corrosion thinning. Therefore, the crude oil casing gyroscope equipment has the advantages of large diameter, heavy volume and low measurement accuracy, and is not suitable for well bore measurement of a gas storage well. And the peak period of the underground gas storage well is about 2011 years, the wall thickness of the gas storage well is thin, and the natural gas pressure in the well is up to 25 MPa. The regular inspection carried out after the gas storage well is put into use is mainly ultrasonic detection or magnetic flux leakage detection carried out aiming at uniform thinning corrosion, local corrosion and punctiform corrosion caused by corrosion of the gas storage well. There is little concern about the settling, shifting, and corrosion deformation of the coupling, loosening of the thread teeth on the coupling, and inclination and/or bending of adjacent casings 300 during use of the gas storage well. Therefore, there is no suitable wellbore deformation detection method for detecting specific deformation defects in a wellbore of a gas storage well that has been in service for many years.
In practical application, as shown in fig. 7, the detection process of the detection device for detecting the deformation of the small-diameter underground gas storage well shaft specifically includes:
s1, cleaning a shaft of the gas storage well to be detected, and filling the shaft to be detected with clear water to a well head: before the CNG gas storage well is detected, the medium stored in the well is emptied, and clean water is filled into the gas storage well to be detected to a well mouth. In some embodiments, step S1 is preceded by: and fully cleaning the shaft of the gas storage well to be detected through cleaning agent cleaning and high-pressure cleaning equipment, and removing oil stains in the shaft of the gas storage well to be detected. It will be appreciated by those skilled in the art that gas storage wells are subject to long term cycling, internal fouling and significant oil contamination. Because the underwater scanner 40 in the detection probe 100 needs to scan the gas storage well casing, and oil contamination in the well can interfere with the underwater scanner 40, before detection, the gas storage well casing to be detected is preferably fully cleaned, and the well is filled with clear water to the well mouth, so that interference of the oil contamination to the detection result is reduced as much as possible.
S2, the detection probe 100 is inserted into the shaft from the ground through the lifting device 70, so that the detection probe 100 is immersed below the water level in the shaft: wherein the sensing probe 100 includes a deformation gyroscope 60 and an underwater scanner 40. Specifically, as shown in fig. 3 and 4, the lifting device 70 includes a winch 420, a servo motor, an encoder, an armored cable winch, and an armored cable 30, wherein the armored cable 30 is wound on the armored cable winch, the servo motor is installed on the winch 420, and the servo motor drives the armored cable winch to rotate through the encoder, so that the armored cable 30 moves, and further the armored cable 30 drives the detection probe 100 to move up and down in the gas storage well. The longest armored cable winch can pay out 700m, and the cable paying-out speed range is 0.01-0.9 m/s.
S3, starting the data processing terminal 200, and performing initialization setting: specifically, the data processing terminal 200 is powered on, relevant parameters are set according to different detection purposes, the three-dimensional deformation analysis software is powered on, and relevant basic parameters of the gas storage well to be detected are set in the software. After the processing and analyzing system of the data processing terminal 200 is self-checked and verified, the motor of the armored cable winch is turned on to be powered on, the detection probe 100 is placed into the wellhead of the gas storage well filled with water, all electrical components of the detection probe 100 are powered on by the data processing terminal 200 through multiple groups of lines in the armored cable 30, and zero calibration is carried out on the depth gauge 80.
S4, driving the lifting device 70 to lower the detection probe 100 in the shaft for detection: driving the lifting device 70 to lower the detection probe 100; the deformation gyroscope 60 is used for acquiring deformation information of a gas storage well shaft, and the underwater scanner 40 scans deformation forms of the gas storage well shaft through a structured light binocular vision measurement method and constructs a three-dimensional model of the inner wall of the gas storage well shaft to be measured; and then the depth information of the descent of the detection probe 100 is recorded by the depth meter 80 in the elevating device 70. The deformation information comprises the inclination angle, the oblique angle, the azimuth angle, the bending degree, the sedimentation amount and the offset of the gas storage well shaft to be detected, a single sleeve and the threaded coupling 500.
Specifically, a formal detection acquisition signal is sent to the data fully mechanized mining machine (the data fully mechanized mining machine can be integrated with the data processing terminal 200) through the data processing terminal 200, and the data fully mechanized mining machine transmits an acquisition signal instruction and a preset cable paying-off speed and length signal to the electrical appliance acquisition element and the lifting device 70 in the detection probe 100 respectively. At this time, the detection step is started, when the detection probe 100 descends at a constant speed, the deformation gyroscope 60 simultaneously starts information acquisition channels such as an inclination angle, an oblique angle, an azimuth angle, a bending degree, a settlement amount, an offset amount and the like to obtain deformation information of a gas storage well shaft, a single casing pipe and a casing pipe coupling, obtains inclination, bending, settlement and offset information between adjacent casing pipes according to the deformation information, and transmits the deformation information of the bending, inclination, settlement and offset and the like of the whole gas storage well shaft, the single casing pipe and the threaded coupling 500 to the data processing terminal 200 through the circuit integration cabin 20 and the data fully mechanized mining machine, wherein the circuit integration cabin 20 and the data fully mechanized mining machine can be connected through a wireless network or optical fiber (i.e. an armored cable 30.
The high-precision depth meter 80 is used for recording the depth information of the deformation detection probe 100 and transmitting the depth information to the data acquisition device in real time, so that detection personnel can conveniently master the detection progress in real time and make timely detection control prejudgment.
The step S4 of constructing the three-dimensional model of the inner wall surface of the shaft of the gas storage well to be detected comprises the following steps: acquiring two-dimensional information of an image of the inner wall surface of a shaft of the gas storage well to be detected by an industrial camera in the underwater scanner 40; and obtaining the roundness difference, the surface profile degree and the line profile degree of the inner part of the shaft of the gas storage well to be detected by the optical fiber coupling laser in the underwater scanner 40, and obtaining a three-dimensional model on the inner wall surface of the shaft of the gas storage well to be detected according to the two-dimensional information of the image of the inner wall surface of the shaft of the gas storage well to be detected and the roundness difference, the surface profile degree and the line profile degree of the inner part of the shaft of the gas storage.
The existing laser instrument equipment is generally large in diameter (250mm and above) and volume, is used in a non-underwater environment, and cannot be suitable for existing gas storage well sizes with the diameters of 177.8mm and 244.48mm and a deep water environment. The underwater scanner 40 in this embodiment employs an optical fiber coupled laser, an imaging lens and an industrial camera, wherein the optical fiber coupled laser employs a binocular vision method to ensure that multiple points detect the defective portion of the casing 300 at the same time, so that specific three-dimensional information of the deformation defect of the shaft can be fully acquired and restored, and the high efficiency and accuracy of the deformation defect acquisition are ensured.
The optical fiber coupling laser has large data acquisition amount due to continuous emission of laser, and has high calculation requirement on the acquired data processing and analyzing capability. Therefore, in the preferred embodiment, when the deformation gyroscope 60 does not detect a suspicious defect, only four laser probes of the fiber coupled lasers are turned on to perform uninterrupted measurement, and when the deformation gyroscope 60 detects a certain defect, all twelve fiber coupled lasers are turned on in a matching manner to perform a fine scanning. In addition, a typical underwater scanner 40 cannot work normally in an environment with water or an environment with little oil contamination in water. In the example, the optical fiber coupling laser is used, the binocular vision measurement method of the structured light is combined, high-precision measurement is achieved by continuously emitting laser, and then an industrial camera is adopted in a matched mode to scan the inner wall of the sleeve 300 of the gas storage well to be detected, so that the method is particularly suitable for detecting bending and deformation defect parts.
In addition, the optical fiber coupling laser is suitable for the precise measurement requirement of the microminiature defect, adopts a resonant cavity without an optical lens, and has the advantages of high stability of emitting laser underwater, strong oil stain resistance, no need of adjustment, no need of maintenance and the like. The resonant cavity has high tolerance to the vibration and impact caused by the movement of the detection probe 100 in the gas storage well and the change of the humidity and temperature environment in the well. Preferably, in this embodiment, the underwater scanner 40 is connected to the data processing terminal 200 through optical fiber communication, and the optical information output by the optical fiber has the advantages of fast transmission speed, high acquisition precision, adjustable laser spot size and brightness, and the like. And the combination of the optical fiber and the linear fiber coupled laser is used to obtain a circular Gaussian beam with a certain intensity peak value. The circular Gaussian beam is expanded by the prism to obtain a laser beam with a certain width, the laser beam reaches the surface of an object to be measured and can generate corresponding deformation along with the fluctuation of the convex and concave surface of the surface, and the encoder obtains three-dimensional measurement information such as roundness difference, surface profile degree, line profile degree and the like in the shaft of the gas storage well to be measured according to the deformed beam. In this embodiment, the optical fiber coupled laser uses 455nm laser with the shortest wavelength, high frequency, and concentrated energy.
It should be noted that, in order to adapt to an underwater environment, the applicant in this embodiment improves the fiber coupled laser measurement modeling method as follows:
setting the coordinate A of a certain point on the inner wall of the shaft of the gas storage well to be detected filled with water as (x, y, z), and setting the corresponding coordinate on the optical fiber coupling laser as (x)1,y1,z1) The ideal coordinate corresponding to the image plane formed by the fiber coupled laser is (x)2,y2) After passing through a water body in the shaft, the two-dimensional actual coordinates of an image formed on the imaging surface of the optical fiber coupling laser device are (X, Y), the two-dimensional actual coordinates correspond to two-dimensional information of the image acquired by the industrial camera, the focal length of the optical fiber coupling laser device is set to be f, and a rotation matrix R of the optical fiber coupling laser device relative to a coordinate system on the inner wall of the shaft of the gas storage well is set1And translation matrix T1Respectively as follows:
Figure BDA0002636647060000111
wherein r is1、r2、……r9And tx、ty、tzAccording to the pixel plane coordinates (u, v) and the corresponding coordinates (x) on the fiber coupled laser1,y1,z1) Calculating the obtained rotation matrix parameter and translation matrix parameter;
then a point A (x, y, z) on the inner wall of the borehole of the gas storage well to be detected has the following relationship:
Figure BDA0002636647060000121
when underwater, the imaging lens has the following imaging relation when imaging:
Figure BDA0002636647060000122
the distance u from a point on the inner wall of the shaft of the gas storage well to be detected to the optical center of the lens is far larger than the focal length f of the imaging system, so the distance v from the optical center of the lens to the industrial camera is approximately equal to f, and the distance can be obtained by the geometric relation of a small-hole imaging model:
Figure BDA0002636647060000123
will coordinate (x)2,y2,z2) Conversion to image coordinates (X, Y, Z), i.e. X corresponds to X2Y corresponds to Y2Z corresponds to Z2The actual coordinates are converted to pixel plane coordinates (u, v), i.e.:
Figure BDA0002636647060000124
the matrix is:
Figure BDA0002636647060000125
and calculating a point A (x, y, z) on the inner wall of the shaft of the gas storage well to be detected to obtain a pixel coordinate reflected on an imaging surface of the optical fiber coupling laser.
Coordinates for industrial camera (x)d、yd、zd) Comprises the following steps:
Figure BDA0002636647060000131
Figure BDA0002636647060000132
the point B (x) on the corresponding coordinate on the fiber coupled laser1,y1,z1) Comprises the following steps:
Figure BDA0002636647060000133
for a point (u) on the coordinates of an industrial camera1,v1) Coupling of laser pixel plane coordinates (u) with fiberd,vd) The relationship is as follows:
Figure BDA0002636647060000134
obtained by the formulas (7) and (8),
Figure BDA0002636647060000135
in summary, the point (u) on the coordinates of the industrial camera can be obtained by the above formula1,v1) I.e. a point (u) in the pixel plane coordinates of the fibre coupled laserd,vd) And the three-dimensional coordinates on the inner wall surface of the shaft of the underwater gas storage well to be detected correspond to the three-dimensional coordinates. And calculating the data of twelve corresponding detection points of the optical fiber coupled laser on the inner wall surface of the shaft of the gas storage well to be detected, so as to form all three-dimensional data of the inner wall surface of the shaft of the gas storage well to be detected. Transmitting all the acquired three-dimensional data to the data processing terminal 200 to obtain the inner wall of the shaft of the gas storage well to be measuredA three-dimensional model of a face. The method considers the underwater imaging relation of the lens, can realize effective and accurate three-dimensional measurement of the inner wall surface of the shaft of the gas storage well to be measured, and the measurement precision can reach 5 mu m level.
S5, the data processing terminal 200 receives, displays and processes the information collected by the detection probe 100: and the data processing terminal 200 receives the depth information, the three-dimensional model of the inner wall surface of the shaft of the gas storage well to be detected, the deformation information of the shaft coupling of the gas storage well and the inclination information between the adjacent casings 300, displays and processes the information. The deformation information comprises the inclination angle, the oblique angle, the azimuth angle, the bending degree, the sedimentation amount and the offset of the gas storage well shaft to be detected, a single sleeve and the threaded coupling 500.
In some embodiments, the display system of the data processing terminal 200 defaults to synchronously display the information of the inclination angle, the oblique angle, the azimuth angle, the bending degree, the settlement amount, the offset and the like of the shaft at the deep part of the same casing and the three-dimensional measurement information of the roundness difference, the surface profile degree, the line profile degree and the like of the inner wall of the shaft in two screens. In the shaft detection process, the three-dimensional deformation analysis software can carry out combined operation analysis on two different signals corresponding to the defect part at any time to obtain a multi-information three-dimensional visual detection result diagram, so that a more comprehensive and complete detection mode and a visual and clear detection result are formed, the defect condition at the position is fully judged, and the detection scheme is adjusted at proper time.
In some embodiments, in step S5, after the detection probe 100 runs to the bottom of the gas storage well to be detected, the operation control system (the data processing terminal 200 drives the detection probe 100 to run upwards through the lifting device 70), and the detection probe 100 performs secondary detection on the casing of the gas storage well to be detected during the upward running process, so that the accuracy of the detection result is fully ensured. After the field detection and collection are finished, the data processing terminal 200 integrates all collected information to form a current detection result, and can store the current detection information for more than three years, so that the settlement and deviation conditions of the gas storage well can be judged according to the settlement and deviation information of the sleeve of the gas storage well in the next detection. And providing the accurate position and the shape and size of the related defect by using the detection result, and guiding the repair and precautionary measures aiming at the defect. The detection frequency is increased for the defects with high risk, and the defect development monitoring is enhanced.
The method for detecting the deformation of the small-diameter underground gas storage well shaft can provide a detection method for specific deformation defects such as inclination, bending, sedimentation, deviation and the like of the well shaft when the gas storage well is put into use for 10 years or more and the well shaft is corroded, thinned and extruded by high ground stress for wrong actions.
As shown in fig. 2 to 6, another aspect of the present invention provides a device for detecting a deformation of a small-diameter underground gas storage well shaft, comprising a data processing terminal 200, a lifting device 70 and a detection probe 100, wherein the data processing terminal 200 is electrically connected to the detection probe 100, the detection probe 100 is inserted into a casing 300 (a well shaft) from the ground through the lifting device 70, and moves up and down in the inner wall of the well shaft through a centralizer 50; the detection probe 100 comprises a probe shell 10, a circuit integrated cabin 20, a deformation gyroscope 60 and an underwater scanner 40, wherein the circuit integrated cabin 20, the deformation gyroscope 60 and the underwater scanner 40 are all hermetically installed in the probe shell 10, and the deformation gyroscope 60 and the underwater scanner 40 are all electrically connected (communicated) with the data processing terminal 200 through the circuit integrated cabin 20.
In the specific implementation process, the probe casing 10 of the detection probe 100 is coated with a protective layer, the protective layer is a layer of rubber and is sleeved on the periphery of the probe casing 10, and a plurality of openings are formed in the protective layer, so that the data acquisition of the underwater scanner 40 is facilitated. The protective layer can prevent the probe casing 10 from colliding with the inner wall of the shaft of the gas storage well to be detected, and can prevent the detection probe 100 from being polluted by oil stains. The diameter of the detection probe 100 is 140mm, the length is 850mm, the working temperature range is 0-50 ℃, compared with the diameter of 300mm and above of the conventional laser scanning equipment, the diameter of the probe is reduced by more than a half, and the detection requirements of gas storage wells with various dimensions are fully met. The centralizer 50 is installed to the probe casing 10 periphery, and the centralizer 50 is adjustable centralizer 50. The centralizer 50 is not required to be used under normal detection conditions and the centralizer 50 is in a home state. However, when the casing 300 is severely deformed or has a narrow cross section, the adjustable centralizer 50 can assist the detection probe 100 to correct the detection direction or assist the detection probe 100 to smoothly pass through the narrow cross section, so that the underwater scanner 40 and the deformation gyroscope 60 in the detection probe 100 can fully detect the shape and the specific size of the inner wall of the gas storage well shaft.
In some embodiments, the deformation gyroscope 60 includes a plurality of vertically arranged fiber optic gyroscopes and a plurality of vertically arranged three-dimensional gravitational acceleration sensors. The optical fiber gyroscope is used for acquiring angle information (information such as inclination angle, oblique angle, azimuth angle, curvature, settlement amount and offset of the gas storage well casing 300 and a casing coupling in the states of inclination, bending, settlement, offset and the like), and the three-dimensional gravity acceleration sensor is used for improving the measurement accuracy of the oblique angle of the well casing. Specifically, in this embodiment, the deformation gyroscope 60 is composed of two fiber optic gyroscopes and two three-dimensional gravitational acceleration sensors, and the fiber optic gyroscopes adopt the existing high-precision multi-axis fiber optic gyroscopes and three-dimensional gravitational acceleration sensors. In order to improve the measurement accuracy of deformation information, the two fiber-optic gyroscopes are vertically distributed, and the missing detection and detection errors of a single fiber-optic gyroscope caused by limited data acquisition amount are reduced aiming at continuous multiple deformation defects. In addition, two optical fiber gyroscopes are adopted to fully sample, so that errors caused by accidental interference factors of a single optical fiber gyroscope are corrected, and the accuracy of detection information is guaranteed. The deformation gyroscope 60 can acquire information of inclination angles, azimuth angles, bending degrees, settlement amounts, offset amounts and the like of defects such as inclination, bending, settlement, offset and the like of the whole gas storage well shaft, a single casing and the threaded coupling 500 and mark distribution conditions of the defects. Particularly, when the coupling connecting part between the sleeves is inclined and bent, the effect of external stress extrusion and dislocation on the defective part is obvious, and the defect hazard detected at the coupling is extremely large, and the attention is paid to the defect. The two three-dimensional gravity acceleration sensors are vertically distributed, so that the situation that serious deformation or narrow cross sections occur in the casing is guaranteed, local oblique angle data caused by interference are obviously large, and the accurate measured shaft oblique angle can be fully guaranteed by adopting the two three-dimensional gravity acceleration sensors. The defects in the example refer to deformation information of the gas storage well casing coupling (the coupling is inclined, bent, settled and offset due to the thinning of the coupling) and adjacent casing inclination and offset. In this example, the measurement accuracy is the inclination angle of the shaft ± 0.2 °, the inclination angle ± 0.2 °, the azimuth angle ± 0.5 °, the bending of the shaft ± 1%, the shaft settlement ± 1mm, and the shaft deviation ± 1 mm.
The lifting device 70 is a winch system, wherein the lifting device 70 comprises a winch 420, a servo motor, an encoder, an armored cable winch and an armored cable 30, wherein the armored cable 30 is wound on the armored cable winch, the servo motor is installed on the winch 420, and the servo motor drives the armored cable winch 410 to rotate through the encoder control, so that the armored cable 30 moves, and further the armored cable 30 drives the detection probe 100 to move up and down uniformly in the gas storage well. The longest armored cable winch can pay out 700m, and the cable paying-out speed range is 0.01-0.9 m/s. The armored cable 30 is connected to the data processing terminal 200 at one end and to the circuit integrated module 20 of the detection probe 100 at the other end. After the underwater scanner 40 and the deformation gyroscope 60 in the middle of the detection probe 100 detect signals, the signals are transmitted to the armored cable 30 through the circuit integrated cabin 20, the signals in the armored cable 30 are transmitted to the adapter through the local bus, and then are accessed to the data processing terminal 200 through the data fully-mechanized mining machine, the data processing terminal 200 can be a desktop computer, a notebook computer, a tablet computer and the like, and the desktop computer is selected in the embodiment. The data comprehensive mining machine is used for performing analog-to-electrical conversion on signals acquired by the deformation gyroscope 60 and the underwater scanner 40 and outputting the signals to the data processing terminal 200, wherein the information received by the data comprehensive mining machine comprises: receiving information such as inclination angle, oblique angle, azimuth angle, curvature, settlement amount, offset and the like of the gas storage well shaft acquired by the deformation gyroscope 60; the three-dimensional measurement information such as roundness difference, surface profile degree, line profile degree and the like of the inner wall of the gas storage well shaft acquired by the deformation laser instrument is received, and the depth information acquired by the high-precision depth meter 80 is received.
The data processing terminal 200 runs processing software, and the processing software is mainly loaded with an underwater laser signal analysis processing module, a deformation gyroscope 60 signal analysis processing module and a signal combination operation module. The underwater laser signal analysis processing module is used for constructing a three-dimensional model of the inner wall of the gas storage well to be detected, and the deformation gyroscope 60 signal analysis processing module is used for analyzing and processing deformation information acquired by the deformation gyroscope 60; the signal combination operation module is used for carrying out combination operation processing on the deformation information and the three-dimensional model, and a display interface of the data processing terminal 200 is divided into two screens by default to synchronously display information such as a shaft inclination angle, an oblique angle, an azimuth angle, a bending degree, a settlement amount and an offset at the deep part of the same casing and three-dimensional information of the inner wall of the shaft. In the process of detecting the shaft, the processing software can carry out combined operation and analysis on two types of different signals corresponding to the defect part at any time to obtain a multi-information three-dimensional visual detection result diagram, so that a more comprehensive and complete detection mode and a visual and clear detection result are formed.
The armored cable winch is provided with a depth meter 80 for recording depth information of the detection probe 100 and transmitting the paying-off speed information of the real-time armored cable 30 to the data processing terminal 200, and the recording precision of the depth meter 80 is up to 1 mm. The depth gauge 80 is connected to the data processing terminal 200 via the armored cable 30.
In some embodiments, the underwater scanner 40 obtains a three-dimensional model and the specific dimensions of the three-dimensional model, and the like, and combines the three-dimensional model with the signals measured by the deformable gyroscope 60 for displaying, so as to form a multi-information three-dimensional visual detection result diagram. The underwater scanner 40 includes a fiber coupled laser employing a resonant cavity without optical optics, an imaging lens, and an industrial camera. The optical fiber coupling laser adopts twelve single-channel single-laser probes arranged along the 100-ring-shaped detection probe at intervals, so that the detection of the 300 defective parts of the sleeve can be guaranteed at multiple points, the detection speed is improved, and the defect detection rate is fully guaranteed.
It should be noted that, the measuring method of the three-dimensional plate laser instrument is as follows: when the single laser probe emits laser to an object to be detected, the laser reflected and scattered by the surface of the object to be detected images a laser spot on a focal plane through a lens, a photosensitive element is placed on the focal plane, when the laser scans the surface of the object to be detected, the position of the laser spot moves, the imaging position of the laser spot near the focal plane correspondingly changes, and the outline of the object to be detected is obtained through an image sensor.
As shown in fig. 5, the laser beam is vertically irradiated on the surface of the standard sample of the object plane to be measured, the beam is irradiated on point a and reflected to point a on the photosensitive surface of the industrial camera, point a is reflected to point a' on the photosensitive surface of the industrial camera, when the measured distance Y is different, the position X of the light spot image reflected on the photosensitive device is also different, and according to the formula of the relation between the triangle relation and the newton object image shown in fig. 5, the relation between the two can be obtained as follows:
Figure BDA0002636647060000181
Figure BDA0002636647060000191
in the formula: y is the distance to be measured; f is the focal length of the imaging system; l is the distance from the laser beam emitting port to the center of the imaging system, namely the length of a base line; l is a certain known distance, and the distance corresponding to the center of the photosurface receiver is usually taken as a reference distance; x is the distance between the distance to be measured on the photosensitive receiver and the image point with the known distance on the photosensitive receiver, and has a positive and negative division.
Specifically, consider that a typical underwater scanner 40 cannot work normally in an environment with water or in an environment with little oil contamination interference in water; and the information capacity obtained in the underwater environment measurement process is obviously increased, the signal refraction loss is large, the requirements on the processing technology and the capability of the collected information are high, and the detection result has larger errors. Therefore, in the preferred embodiment, when the deformation gyroscope 60 does not detect the deformation information of the suspected gas storage well shaft to be detected, only four laser probes in the fiber coupled laser are started to perform uninterrupted measurement, and when the deformation gyroscope 60 detects a certain defect, all twelve laser probes are opened in a matched manner to perform fine scanning. The optical fiber coupling laser used by the invention is combined with a binocular vision measuring method of structured light, high-precision measurement is achieved by continuously emitting laser, and an industrial camera is adopted to acquire image information, so that the scanning of the inner wall of the sleeve 300 of the gas storage well to be detected is realized, and the optical fiber coupling laser is particularly suitable for realizing the detection of bending and deformation defect parts.
It should be noted that the fiber coupled laser is suitable for the precise measurement requirement of the micro-defect, and the fiber coupled laserThe resonant cavity without the optical lens has the advantages of high stability of emitting laser underwater, strong oil stain resistance, no need of adjustment, no need of maintenance and the like. The resonant cavity has high tolerance to the vibration and impact caused by the movement of the detection probe 100 in the gas storage well and the change of the humidity and temperature environment in the well. Preferably, in this embodiment, the underwater scanner 40 is connected to the data processing terminal 200 through optical fiber communication, and the optical information output by the optical fiber has the advantages of fast transmission speed, high acquisition precision, adjustable laser spot size and brightness, and the like. And the combination of the optical fiber and the linear fiber coupled laser is used to obtain a circular Gaussian beam with a certain intensity peak value. The circular Gaussian beam is expanded by the prism to obtain a laser beam with a certain width, the laser beam reaches the surface of an object to be measured and can generate corresponding deformation along with the fluctuation of the convex and concave surface of the surface, and the encoder obtains three-dimensional measurement information such as roundness difference, surface profile degree, line profile degree and the like in the shaft of the gas storage well to be measured according to the deformed beam. In this example, the fiber coupled laser uses 455nm wavelength laser with the shortest wavelength, high frequency, and concentrated energy. The measurement precision is that the roundness difference of shaft deformation is +/-1 mm, the surface profile degree is +/-0.5 mm, and the well wall corrosion area is +/-2 mm2。
In conclusion, the detection device for detecting the deformation of the small-diameter underground gas storage well shaft has the following beneficial effects:
1. the deformation information of the gas storage well shaft and the shaft coupling is identified through the deformation gyroscope, the deformation information is scanned through the underwater scanner, a three-dimensional model of the inner wall surface of the gas storage well shaft to be detected is constructed, the three-dimensional model can simulate the specific deformation position and the deformation size of a sleeve, the depth meter is used for recording the depth information of the detection probe at the moment, the three-dimensional model and the depth information of the deformation of the sleeve coupling of the gas storage well are respectively sent to the data processing terminal to be displayed, detection personnel can analyze the deformation conditions of the gas storage well shaft and the shaft coupling, and the comprehensive safe use condition of the gas storage well to be detected can be conveniently determined for the gas storage well which is put into use for 10 years or. And the precise position and the shape and size of the related defect are provided according to the detection result, the repair and precautionary measures aiming at the defect are guided, the detection frequency of the defect with high risk is increased, and the defect development monitoring is enhanced.
2. In order to improve the measurement accuracy of the oblique angle, when a plurality of continuous different deformation defects simultaneously appear, the two fiber-optic gyroscopes are vertically distributed. When a plurality of continuous deformation defects in the gas storage well occur, the two optical fiber gyroscopes are used for detection, so that the detection omission and detection errors of a single optical fiber gyroscope caused by limited data acquisition amount can be reduced. In addition, two fiber-optic gyroscopes are adopted to fully sample, and the error of a single fiber-optic gyroscope caused by accidental interference factors is corrected, so that the accuracy of detection information is effectively guaranteed.
3. The fiber coupled laser of the underwater scanner is formed by arranging twelve single-channel single laser probes at intervals along the circumferential direction of the probe tube, so that the defect parts of the sleeve tube can be detected at multiple points at the same time, and the absorption loss of the water environment and oil stains to signals is reduced. Aiming at the problem of large loss of the underwater laser signal, the underwater laser signal modeling analysis algorithm is improved, the high efficiency and accuracy of laser signal processing are guaranteed, and the absorption loss of the water environment and oil stains to the signal is reduced. The underwater scanner is used for detecting the precise shape information and the specific defect size of the defects such as inclination, bending and deformation of the sleeve, the obtained detection signals can be combined with the information detected by the deformation gyroscope for displaying, a multi-information three-dimensional visual detection result diagram is obtained, and a more complete detection mode is formed.
4. When the detection is carried out, the three-dimensional deformation analysis software defaults to synchronously display information such as a shaft inclination angle, an oblique angle, an azimuth angle, a bending degree, a settlement amount and an offset at the deep part of the same casing pipe and three-dimensional measurement information such as roundness difference, surface profile degree and line profile degree of the inner wall of the shaft in a two-screen mode, two different signals corresponding to the defect part can be combined, operated and analyzed at any time in the shaft detection process, a visual three-dimensional cylindrical surface display image of the defect part is formed, the defect condition of the part is fully judged, and the detection scheme is adjusted at proper time.
5. The optical fiber coupling laser measurement modeling method provided by the invention considers the lens underwater imaging relationship, reduces the signal absorption loss of water environment and oil stain, can realize effective and accurate three-dimensional measurement on the inner wall surface of the shaft of the gas storage well to be measured, and has the measurement precision reaching 5 mu m level.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims (9)

1. A detection device for small-diameter underground gas storage well shaft deformation is characterized by comprising:
the lifting device comprises a winch, a servo motor, an encoder, an armored cable winch and an armored cable, wherein the armored cable is wound on the armored cable winch, and the servo motor is arranged on the winch;
the data processing terminal is electrically connected with one end of the armored cable; and
detect and visit the pipe, with armoured cable's other end electric connection, just detect and visit the pipe and include:
a probe tube housing;
the deformation gyroscope is sealed in the probe tube shell;
the underwater scanner is sealed in the probe shell; and
the circuit integrated cabin is sealed in the probe tube shell and is electrically connected with the other end of the armored cable, and the deformation gyroscope and the underwater scanner are electrically connected with the data processing terminal through the circuit integrated cabin;
the servo motor drives the armored cable winch to rotate through the encoder, so that the armored cable and the detection probe are driven to longitudinally move in a shaft of the gas storage well, and the shaft is filled with water;
the deformation gyroscope is used for acquiring deformation information of the shaft, and the underwater scanner is used for scanning deformation forms of the shaft and constructing a three-dimensional model of the inner wall of the shaft;
the data processing terminal is used for receiving the deformation information of the shaft and the three-dimensional model of the inner wall of the shaft, displaying and processing the deformation information and the three-dimensional model.
2. The apparatus of claim 1, wherein the casing has a protective layer coated on an outer surface thereof, the protective layer has a plurality of openings, and a plurality of centralizers are mounted on an outer periphery of the casing, the centralizers being adjustable centralizers.
3. The apparatus of claim 1, wherein the fiber coupled laser of the underwater scanner is twelve single channel laser probes circumferentially spaced along the inner wall of the casing.
4. The apparatus for detecting deformation of a small diameter underground gas storage well bore according to claim 1, wherein the deformation gyroscope comprises a plurality of vertically arranged fiber optic gyroscopes for acquiring angle information of the well bore and a plurality of vertically arranged three-dimensional acceleration sensors for improving measurement accuracy of a slant angle of the well bore.
5. The apparatus of claim 1, wherein a depth meter is disposed at the winch of the armored cable, the depth meter is used for recording the depth information of the placement of the detection probe, the depth meter is electrically connected to the data processing terminal through the armored cable, and the depth meter transmits the real-time paying-off speed information of the armored cable and the descending depth information of the detection probe to the data processing terminal.
6. The apparatus for detecting deformation in a well bore of a small diameter underground gas storage well of claim 1, wherein the armored cable winch can pay out 700m at the maximum and the cable pay-out speed ranges from 0.01m/s to 0.9 m/s.
7. The apparatus for detecting deformation of a well bore of a small diameter underground gas storage well according to claim 1, wherein the deformation information of the well bore includes inclination, azimuth, tortuosity, settling amount, and offset of the well bore and a single casing, a threaded collar of the gas storage well to be detected.
8. The apparatus for detecting deformation in a small diameter underground gas storage well bore according to claim 3, wherein when the deformation gyroscope does not detect a defect, only four of the single-channel laser probes of the fiber-coupled laser of the underwater scanner are turned on for uninterrupted measurement, and when the deformation gyroscope detects a defect, the twelve single-channel laser probes of the fiber-coupled laser of the underwater scanner are turned on for measurement.
9. The apparatus for detecting the deformation of a small diameter subterranean gas storage well bore according to claim 8, wherein said fiber coupled laser is a resonant cavity without optical lens.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113310521A (en) * 2021-05-28 2021-08-27 长安大学 Dynamic measurement device for shaft of rescue well with rescue lifting cabin as carrier
CN113552067A (en) * 2021-07-29 2021-10-26 江苏桓通环境科技有限公司 Efficient hollow wall winding pipe machining and detecting jig and using method thereof

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1558182A (en) * 2004-01-17 2004-12-29 湖北清江水布垭工程建设公司 Measuring system for faceplate deflection, internal horizontal and vertical deformation of dam body
CN102080535A (en) * 2009-11-26 2011-06-01 贵州航天控制技术有限公司 Gyroscopic well-trace tester
CN201865663U (en) * 2010-06-03 2011-06-15 西安思坦仪器股份有限公司 Inertia measurement unit and power tuning gyroscope continuous inclinometry system
WO2012074663A1 (en) * 2010-12-03 2012-06-07 Baker Hughes Incorporated Determination of strain components for different deformation modes using a filter
CN103134855B (en) * 2013-01-28 2015-08-12 张峰 Well for storage borehole wall robotization comprehensive detection system and detection method
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
CN208334311U (en) * 2018-04-24 2019-01-04 安徽省特种设备检测院 Well for storage detects all-around test stand
CN109681189A (en) * 2019-03-06 2019-04-26 北京华瑞九州能源科技有限公司 A kind of hole diameter sector cementing quality and track integrated measuring instrument

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1558182A (en) * 2004-01-17 2004-12-29 湖北清江水布垭工程建设公司 Measuring system for faceplate deflection, internal horizontal and vertical deformation of dam body
CN102080535A (en) * 2009-11-26 2011-06-01 贵州航天控制技术有限公司 Gyroscopic well-trace tester
CN201865663U (en) * 2010-06-03 2011-06-15 西安思坦仪器股份有限公司 Inertia measurement unit and power tuning gyroscope continuous inclinometry system
WO2012074663A1 (en) * 2010-12-03 2012-06-07 Baker Hughes Incorporated Determination of strain components for different deformation modes using a filter
CN103134855B (en) * 2013-01-28 2015-08-12 张峰 Well for storage borehole wall robotization comprehensive detection system and detection method
CN208334311U (en) * 2018-04-24 2019-01-04 安徽省特种设备检测院 Well for storage detects all-around test stand
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
CN109681189A (en) * 2019-03-06 2019-04-26 北京华瑞九州能源科技有限公司 A kind of hole diameter sector cementing quality and track integrated measuring instrument

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
张启波 等: "光纤陀螺技术在油气管道变形检测中的应用", 《石油化工腐蚀与防护》 *
罗德新: "光纤陀螺技术用于管道形变检测的方法研究", 《传感器世界》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113310521A (en) * 2021-05-28 2021-08-27 长安大学 Dynamic measurement device for shaft of rescue well with rescue lifting cabin as carrier
CN113552067A (en) * 2021-07-29 2021-10-26 江苏桓通环境科技有限公司 Efficient hollow wall winding pipe machining and detecting jig and using method thereof

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