CN110864655A - Casing drift diameter thickness measuring device and sorting and repairing method for old stored casings - Google Patents
Casing drift diameter thickness measuring device and sorting and repairing method for old stored casings Download PDFInfo
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- CN110864655A CN110864655A CN201911082239.7A CN201911082239A CN110864655A CN 110864655 A CN110864655 A CN 110864655A CN 201911082239 A CN201911082239 A CN 201911082239A CN 110864655 A CN110864655 A CN 110864655A
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000000523 sample Substances 0.000 claims abstract description 41
- 239000007921 spray Substances 0.000 claims abstract description 38
- 238000005406 washing Methods 0.000 claims abstract description 30
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 13
- 238000000576 coating method Methods 0.000 claims abstract description 13
- 238000005507 spraying Methods 0.000 claims abstract description 8
- 230000008439 repair process Effects 0.000 claims description 23
- 238000005520 cutting process Methods 0.000 claims description 16
- 230000007797 corrosion Effects 0.000 claims description 9
- 238000005260 corrosion Methods 0.000 claims description 9
- 238000007689 inspection Methods 0.000 claims description 9
- 230000001012 protector Effects 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000003344 environmental pollutant Substances 0.000 claims description 5
- 239000004519 grease Substances 0.000 claims description 5
- 231100000719 pollutant Toxicity 0.000 claims description 5
- 238000005422 blasting Methods 0.000 claims description 4
- 239000012459 cleaning agent Substances 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 244000137852 Petrea volubilis Species 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 238000012795 verification Methods 0.000 claims description 3
- 210000000664 rectum Anatomy 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000007306 turnover Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 5
- 238000004064 recycling Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/10—Reconditioning of well casings, e.g. straightening
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
- G01B5/12—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters internal diameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
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Abstract
The invention provides a casing diameter thickness measuring device and a sorting and repairing method for old casings in stock, which realize the reutilization of the old casings in stock, reduce the casing stock of a material purchasing department, reduce the occupied capital in stock and have great significance for accelerating capital turnover. The sleeve drift diameter thickness measuring device comprises a mounting support, a display control assembly, a probe rod, a high-pressure spray washing assembly, a drift diameter rod and a wall thickness measuring assembly, wherein the mounting support is used for completing drift diameter and wall thickness measurement of a sleeve to be measured. The sorting and repairing method of the stored old casing pipes comprises a sorting method and a repairing method; the sorting method comprises appearance sorting and thread sorting; the repairing method is divided into first-class repairing and second-class repairing according to different waste conditions, then rust removal, coating protection and mark spraying are carried out, repairing is finally completed, the repairing is delivered for use again after the repairing is qualified, and the purposes of utilizing the old and utilizing the waste are fully achieved.
Description
Technical Field
The invention belongs to the technical field of special petroleum pipes, and particularly relates to a casing drift diameter thickness measuring device and a sorting and repairing method for old stored casings.
Background
The casing pipe is an indispensable important material for oil field drilling, redundant casing pipes are inevitably accumulated in a warehouse in the purchase of the material, the casing pipes are not used for a long time, and the casing pipes become old-in-stock casing pipes in the blowing and sunning process and the field-reversing transportation process. During the storage period of the casing, the screw thread is damaged or the root part is rusted, the outer wall is collided or the surface is rusted under the influence of the transportation field and the atmospheric environment; these more or less problems cause the user to be afraid of going down the well for use, the more and the longer the stock casing is, the only disposal is finally made, causing huge capital occupation and waste of assets. At present, an effective scheme for recycling the old sleeve in the stock is not available, and certainly, the problems that most users are unwilling to use the old sleeve, so that the stock age of the old sleeve is longer and longer, and the recycling of the old sleeve in the stock is always troublesome for a material purchasing department exist.
Therefore, a method for effectively sorting and repairing the old casing in the stock is needed, which is convenient for the use department to use the old casing in the stock for well descending and reduces the capital occupation and the asset waste.
Meanwhile, a device capable of simultaneously measuring the drift diameter and the wall thickness of the old casing pipes needs to be designed in the process of sorting and repairing the old casing pipes in the stock, so that sorting and repairing of the old casing pipes are assisted to be smoothly carried out.
Disclosure of Invention
The invention provides a casing diameter thickness measuring device and a sorting and repairing method for old casings in stock, which realize the reutilization of the old casings in stock, reduce the casing stock of a material purchasing department, reduce the occupied capital in stock and have great significance for accelerating capital turnover.
In order to achieve the purpose, the technical solution provided by the invention is as follows:
a casing drift diameter thickness measuring device is characterized in that: the device comprises an installation support, a display control assembly, a probe rod, a high-pressure spray washing assembly, a drift diameter rod and a wall thickness measuring assembly, wherein the installation support is used for measuring the drift diameter and the wall thickness of a sleeve to be measured;
the mounting support comprises a vertical supporting frame and a horizontal supporting plate;
the front end of the probe rod is coaxially sleeved with a wall thickness measuring assembly, a drift diameter rod and a high-pressure spray washing assembly from inside to outside in sequence, and the rear end of the probe rod is installed on the vertical support frame;
the sleeve to be tested is positioned on the horizontal supporting plate, is close to the front end of the probe rod and is coaxially arranged with the probe rod;
the probe rod is used for carrying the high-pressure spray washing assembly, the drift diameter rod and the wall thickness measuring assembly to extend into the sleeve to be measured;
the drift diameter rod adopts a drift diameter rod corresponding to the specification of the casing pipe to be detected;
the high-pressure spray washing assembly is used for spraying high-pressure water columns in the circumferential direction and washing attachments on the inner wall of the sleeve to be tested, and the radial size of the high-pressure spray washing assembly is smaller than that of the drift diameter rod;
the wall thickness measuring assembly is used for measuring the wall thickness of a sleeve to be measured and comprises a thickness measuring base and at least 8 groups of ultrasonic straight probes; at least 8 groups of ultrasonic straight probes are uniformly arranged in the circumferential direction of the end face of the thickness measuring base through the spring hinge and the extension rod, so that each group of ultrasonic straight probes can move around the connection point under the action of the spring hinge (for example, the ultrasonic straight probes move in a range of 60-90 degrees on the plane of the thickness measuring base, and the specific moving range is related to the elastic deformation of the spring hinge) to adapt to the deformation of the inner wall of the sleeve, and each group of ultrasonic straight probes is arrangedThe head is attached to the inner wall of the sleeve during measurement; diameter D of the thickness measuring base1Drift diameter rod D less than corresponding specification2And D is1＝D2-20mm；
The display control assembly is arranged on the vertical support frame and used for controlling the high-pressure spray washing assembly to spray water and displaying the measurement value of the wall thickness measurement assembly.
Further, the high-pressure spray washing component is a high-pressure spray head, and a plurality of nozzles are circumferentially arranged on the high-pressure spray washing component;
12 groups of ultrasonic straight probes are installed on the thickness measuring base.
Further, the cable of the display control assembly is connected with the high-pressure spray washing assembly and the wall thickness measuring assembly at the front end through the interior of the probe rod. The lower limit gate of wall thickness still can set up in this display control subassembly, in case find that the sleeve pipe wall thickness numerical value is relatively poor, just can send the prompt tone and record actual measurement value, treats the manual work and carries out the reinspection.
Furthermore, the probe rod is made of aluminum alloy materials, so that the weight of the whole device is reduced; the drift diameter stick adopts wear-resisting POM plastics material, when the drift diameter, can not carry out secondary damage to the sleeve pipe inner wall.
Meanwhile, the invention also provides a method for sorting and repairing the stored old casing by using the casing drift diameter thickness measuring device, which is characterized by comprising the following steps:
s1 sorting
S1.1 appearance sorting
S1.1.1 appearance inspection
Carrying out appearance inspection on each old sleeve under the illumination of at least 350lx, and inspecting whether a pipe body of each old sleeve has a pit and/or bump;
if the pipe body has pits and/or bumps, entering S1.1.2;
if the pipe body does not have pits and/or bumps, entering S1.2;
s1.1.2 path treatment
The method comprises the following steps of (1) performing drift diameter treatment on an old casing with pits and/or bumps by using a casing drift diameter thickness measuring device, and detecting whether a drift diameter rod in the casing drift diameter thickness measuring device can pass through the old casing;
if the drift diameter rod can pass through the old sleeve, S1.1.3 is entered;
if the drift diameter rod cannot pass through the old casing pipe, the old casing pipe is scrapped;
s1.1.3 wall thickness detection
Adopting a casing drift diameter thickness measuring device to continuously carry out wall thickness detection on the pit and the collision part on the old casing, and detecting whether the wall thickness at the position is less than 0.875 time of the nominal wall thickness;
if the wall thickness is less than 0.875 times of the nominal wall thickness, the old casing pipe is scrapped;
if the thickness is not less than 0.875 times of the nominal wall thickness, entering S1.2;
s1.2 thread sorting
S1.2.1, removing the internal and external thread protector of the old sleeve, and cleaning thread grease and anti-rust oil in the sleeve thread by using a cleaning agent;
s1.2.2 the threads of the old casing were tested for appearance and tight pitch conformance to see if the following were true:
A. corrosion exists in the minimum length of the full-top thread;
B. collision and/or damage exist in the whole length range of the thread;
C. the thread tight pitch is unqualified;
D. the root of the thread is slightly rusted;
if the situation A and/or B and/or C is met, S2.1 is carried out to carry out first-class repair;
if the situation D is met, S2.2 is entered for second-class repair;
s2 repair
S2.1 class repair
S2.1.1 thread cutting head
Performing head cutting treatment on the thread needing head cutting;
s2.1.2 thread processing and screwing
For the thread cutting head of the male end, machining qualified threads again;
for the end cutting of the coupling, after qualified threads are processed, the coupling is screwed down, and thread protectors are screwed on two ends as required, and the process enters S2.3;
s2.2 class II repair
S2.2.1 grinding
Polishing the root of the thread until the thread tight distance is qualified;
s2.2.2 coating antirust oil and screwing the thread protector, and entering S2.3;
s2.3 Rust removal
Removing rust and pollutants on the old sleeve to ensure that the roughness reaches Rz40-75 mu m;
s2.4 coating protection and spray mark
And spraying an antirust coating on the derusted old casing pipe, and marking to finish repairing.
Further, still include:
s3 third party verification
And (4) checking the appearance geometric dimension and the thread of the repaired old casing by a third party, and delivering for use after the inspection is qualified.
Further, in S1.2.1, cleaning agent is adopted to clean thread grease and rust preventive oil in the casing thread.
Further, S2.1.1, the thread to be cut is subjected to a cutting process by a machine tool or a sawing machine.
Further, S2.2.1, the thread root is repaired by polishing with sand paper and oilstone until the thread tight distance is qualified, so that the thread root has no corrosion product or corrosion pit.
Further, in S2.3, a derusting device is adopted to perform shot blasting derusting treatment on the old sleeve, remove rust and pollutants on the sleeve, expose the natural color of metal and enable the roughness to reach Rz40-75 μm.
Further, in S2.4, the antirust coating is water-soluble.
Further, the stocked old casing refers to a casing which is stored in a warehouse for more than 5 years and is not used.
The invention has the beneficial effects that:
1. the sleeve diameter and wall thickness measuring device has multiple purposes, can simultaneously complete the task of measuring the diameter and wall thickness of the sleeve, has a simple structure, is convenient to operate, fully considers the influence of attachments on the inner wall of the sleeve, and is cleaned by adopting a high-pressure spray washing assembly in advance, so that the subsequent diameter and wall thickness measurement is convenient.
2. Aiming at the problem that users recycle old sleeves in stock, according to the requirements of corresponding purchasing standards, a sorting method (including appearance sorting and thread sorting) and a repairing method (including surface corrosion or collision and thread root corrosion or thread damage repairing methods) of the old sleeves in stock are formulated by combining data of a multi-year sleeve material object test, the old sleeves in stock are sorted out to be unusable and can be used for two levels after being repaired, the unusable sleeves in the old sleeves in stock are effectively screened, and the problem of blind use is avoided; the rest of the usable old sleeves are subjected to repairing, rust removing, antirust coating spraying, marking and third party inspection and then are delivered for use again, so that the problem of recycling the old sleeves in stock of a material company is effectively solved, the stock of the sleeves and the occupied capital of the stock are reduced, the capital flow rate is enhanced, and the purposes of utilizing the old sleeves and utilizing the waste sleeves are fully achieved.
Drawings
FIG. 1 is a schematic structural diagram of a casing drift diameter thickness measuring device according to the present invention;
FIG. 2 is a schematic mechanical view of a wall thickness measuring assembly of the present invention;
FIG. 3 is a block flow diagram of a sorting repair method of the present invention;
the reference numbers are as follows:
1-casing pipe to be tested; 2-high pressure spray washing the assembly; 3-a drift diameter rod; 4-a wall thickness measuring assembly; 5-a probe rod; 6-display control component; 7, mounting a support; 71-a vertical support; 72-horizontal support plate; 8-a thickness measuring base; 9-ultrasonic straight probe.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
as shown in fig. 1 and 2, a casing drift diameter thickness measuring device comprises a mounting support for measuring the drift diameter and the wall thickness of a casing 1 to be measured, a display control assembly 6, a probe rod 5, a high-pressure spray washing assembly 2, a drift diameter rod 3 and a wall thickness measuring assembly 4.
The mounting support comprises a vertical support frame 71 and a horizontal support plate 72;
the front end of the probe rod 5 is coaxially sleeved with the wall thickness measuring component 4, the drift diameter rod 3 and the high-pressure spray washing component 2 from inside to outside in sequence, and the rear end of the probe rod is arranged on the vertical support frame 71; the probe rod 5 is made of aluminum alloy materials, is light, and enables the quality of the whole device to be reduced and transportation to be facilitated.
The drift diameter rod 3 adopts the drift diameter rod 3 corresponding to the specification of the casing pipe 1 to be measured, is made of wear-resistant POM plastic, and cannot cause secondary damage to the inner wall of the casing pipe during drift diameter.
The high-pressure spray washing component 2 is a high-pressure spray head, a plurality of nozzles are uniformly arranged in the circumferential direction of the high-pressure spray washing component and are used for spraying high-pressure water columns in the circumferential direction and cleaning attachments on the inner wall of the sleeve 1 to be tested, and the radial size of the high-pressure spray washing component 2 is smaller than that of the drift diameter rod 3;
the wall thickness measuring component 4 is used for measuring the wall thickness of the casing pipe 1 to be measured and comprises a thickness measuring base 8 and 12 groups of ultrasonic straight probes 9; the 12 groups of ultrasonic straight probes 9 are uniformly arranged in the circumferential direction of the end face of the thickness measuring base 8 through spring hinges and connecting rods, so that each group of ultrasonic straight probes 9 can move around a connecting point under the action of the spring hinges (for example, the ultrasonic straight probes move in a range of 60-90 degrees on the plane of the thickness measuring base 8, and the specific moving range is related to the elastic deformation of the spring hinges) so as to adapt to the deformation of the inner wall of the sleeve, and each group of ultrasonic straight probes 9 is attached to the inner wall of the sleeve during measurement; diameter D of the thickness measuring base 81Drift diameter rod 3D smaller than corresponding specification2And D is1＝D2-20mm；
The display control assembly 6 is arranged on the vertical supporting frame 71 and used for controlling the high-pressure spray washing assembly 2 to spray water and displaying the measurement value of the wall thickness measurement assembly 4, and a cable of the display control assembly 6 is connected with the high-pressure spray washing assembly 2 and the wall thickness measurement assembly 4 at the front end through the interior of the feeler lever 5. The lower limit gate of wall thickness still can set up in this display control subassembly 6, in case find that the sleeve pipe wall thickness numerical value is relatively poor, just can send the prompt tone and record actual measurement value, treat the manual work and go on the reinspection.
When in use, the sleeve 1 to be tested is placed on the horizontal support plate 72, and is close to the front end of the probe rod 5 and is coaxial with the probe rod 5; the probe rod 5 carries the high-pressure spray washing component 2, the drift diameter rod 3 and the wall thickness measuring component 4 to stretch into the sleeve 1 to be measured, and the task of measuring the drift diameter and the wall thickness can be completed at one time.
As shown in the flow chart of fig. 3, taking the old casing with the P110 BC specification of Φ 177.8mm × 10.36mm as an example, the sorting repair method specifically includes the following steps:
s1 sorting
S1.1 appearance sorting
S1.1.1 appearance inspection
Carrying out appearance inspection on each old sleeve under the illumination of at least 350lx, and inspecting whether a pipe body of each old sleeve has a pit and/or bump;
if the pipe body has pits and/or bumps, entering S1.1.2;
if the pipe body does not have pits and/or bumps, entering S1.2;
s1.1.2 path treatment
The sleeve diameter and thickness measuring device (wherein the diameter of the diameter rod is 153.90mm, and the length of the diameter rod is 152mm) is adopted to carry out diameter processing on the old sleeve with the pits and/or the bumps, and whether the diameter rod can pass through the old sleeve is detected;
if the drift diameter rod can pass through the old sleeve, S1.1.3 is entered;
if the drift diameter rod cannot pass through the old casing pipe, the old casing pipe is scrapped;
s1.1.3 wall thickness detection
Adopting the casing drift diameter thickness measuring device to continuously carry out wall thickness detection on the pit and the collision part on the old casing, and detecting whether the wall thickness of the part is less than 9.06 mm;
if the diameter is less than 9.06mm, scrapping the old sleeve;
if the diameter is not less than 9.06mm, entering S1.2;
s1.2 thread sorting
S1.2.1, removing the internal and external thread protector of the old sleeve, and cleaning thread grease and anti-rust oil in the sleeve thread by using a cleaning agent;
s1.2.2 the threads of the old casing were tested for appearance and tight pitch conformance to see if the following were true:
A. corrosion exists in the minimum length of the full-top thread;
B. collision and/or damage exist in the whole length range of the thread;
C. the thread tight pitch is unqualified;
D. the root of the thread is slightly rusted;
if the situation A and/or B and/or C is met, S2.1 is carried out to carry out first-class repair;
if the situation D is met, S2.2 is entered for second-class repair;
s2 repair
S2.1 class repair
S2.1.1 thread cutting head
And (4) performing head cutting treatment on the threads needing head cutting by using a machine tool or a sawing machine.
S2.1.2 thread processing and screwing
For the thread cutting head of the male end, machining qualified threads again;
for the end cutting of the coupling, after qualified threads are processed, the coupling is screwed down, and thread protectors are screwed on two ends as required, and the process enters S2.3;
s2.2 class II repair
S2.2.1 grinding
Grinding and repairing the root of the thread by using sand paper or oilstone until the thread tight distance is qualified, so that the root of the thread is free of rust products and rust pits;
s2.2.2 coating antirust oil and screwing the thread protector, and entering S2.3;
s2.3 Rust removal
Carrying out shot blasting rust removal treatment on the old sleeve by adopting rust removal equipment, removing rust and pollutants on the sleeve, exposing the natural color of metal and enabling the roughness to reach Rz40-75 mu m;
s2.4 coating protection and spray mark
Spraying a water-soluble antirust coating on the old sleeve subjected to shot blasting and rust removal, and marking to finish repairing;
s3 third party verification
And (3) checking the appearance geometric dimension and the thread of the repaired old casing by a third party, wherein the parameters of the male end thread and the parameters of the connecting hoop end thread are both in the standard range of the casing with the same specification, so that the repaired old casing belongs to a qualified product, can be used in a delivery manner and realizes reutilization.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present disclosure.
Claims (10)
1. The utility model provides a sleeve pipe latus rectum thickness measuring device which characterized in that: the device comprises a mounting support (7) for completing the drift diameter and wall thickness measurement of a sleeve (1) to be measured, a display control assembly (6), a probe rod (5), a high-pressure spray washing assembly (2), a drift diameter rod (3) and a wall thickness measurement assembly (4);
the mounting support (7) comprises a vertical support frame (71) and a horizontal support plate (72);
the front end of the probe rod (5) is coaxially sleeved with a wall thickness measuring assembly (4), a drift diameter rod (3) and a high-pressure spray washing assembly (2) from inside to outside in sequence, and the rear end of the probe rod is arranged on a vertical support frame (71);
the sleeve (1) to be tested is positioned on the horizontal supporting plate (72), is close to the front end of the probe rod (5), and is coaxially arranged with the probe rod (5);
the probe rod (5) is used for carrying the high-pressure spray washing assembly (2), the drift diameter rod (3) and the wall thickness measuring assembly (4) to extend into the sleeve (1) to be measured;
the drift diameter rod (3) adopts a drift diameter rod (3) with the specification corresponding to that of the sleeve (1) to be tested;
the high-pressure spray washing assembly (2) is used for spraying high-pressure water columns in the circumferential direction to wash attachments on the inner wall of the sleeve (1) to be tested, and the radial size of the high-pressure spray washing assembly (2) is smaller than that of the drift diameter rod (3);
the wall thickness measuring component (4) is used for measuring the wall thickness of the casing pipe (1) to be measured and comprises a thickness measuring base (8) and at least 8 groups of ultrasonic straight probes (9); the at least 8 groups of ultrasonic straight probes (9) are uniformly arranged on the circumference of the end surface of the thickness measuring base (8) through spring hinges and connecting rods; each group of ultrasonic straight probes (9) is attached to the inner wall of the sleeve during measurement; the diameter D of the thickness measuring base (8)1Drift diameter rod (3) D less than corresponding specification2And D is1＝D2-20mm；
The display control assembly (6) is arranged on the vertical support frame (71) and is used for controlling the high-pressure spray washing assembly (2) to spray water and displaying the measurement value of the wall thickness measurement assembly (4).
2. The casing drift diameter thickness measuring device of claim 1, wherein:
the high-pressure spray washing component (2) is a high-pressure spray head, and a plurality of nozzles are arranged in the circumferential direction of the high-pressure spray washing component;
12 groups of ultrasonic straight probes (9) are arranged on the thickness measuring base (8).
3. The casing drift diameter thickness measuring device of claim 2, wherein:
and a cable of the display control assembly (6) is connected with the high-pressure spray washing assembly (2) and the wall thickness measuring assembly (4) at the front end through the interior of the probe rod (5).
4. The casing drift diameter thickness measuring device of claim 3, wherein: the probe rod (5) is made of aluminum alloy; the drift diameter rod (3) is made of wear-resistant POM plastic.
5. The method for sorting and repairing the old stored casing by using the casing drift diameter thickness measuring device is characterized by comprising the following steps of:
s1 sorting
S1.1 appearance sorting
S1.1.1 appearance inspection
Carrying out appearance inspection on each old sleeve under the illumination of at least 350lx, and inspecting whether a pipe body of each old sleeve has a pit and/or bump;
if the pipe body has pits and/or bumps, entering S1.1.2;
if the pipe body does not have pits and/or bumps, entering S1.2;
s1.1.2 path treatment
The method comprises the following steps of (1) performing drift diameter treatment on an old casing with pits and/or bumps by using a casing drift diameter thickness measuring device, and detecting whether a drift diameter rod in the casing drift diameter thickness measuring device can pass through the old casing;
if the drift diameter rod can pass through the old sleeve, S1.1.3 is entered;
if the drift diameter rod cannot pass through the old casing pipe, the old casing pipe is scrapped;
s1.1.3 wall thickness detection
Adopting a casing drift diameter thickness measuring device to continuously carry out wall thickness detection on the pit and the collision part on the old casing, and detecting whether the wall thickness at the position is less than 0.875 time of the nominal wall thickness;
if the wall thickness is less than 0.875 times of the nominal wall thickness, the old casing pipe is scrapped;
if the thickness is not less than 0.875 times of the nominal wall thickness, entering S1.2;
s1.2 thread sorting
S1.2.1, removing the internal and external thread protectors of the old sleeve, and cleaning thread grease and anti-rust oil in the threads of the sleeve;
s1.2.2 the threads of the old casing were tested for appearance and tight pitch conformance to see if the following were true:
A. corrosion exists in the minimum length of the full-top thread;
B. collision and/or damage exist in the whole length range of the thread;
C. the thread tight pitch is unqualified;
D. the root of the thread is slightly rusted;
if the situation A and/or B and/or C is met, S2.1 is carried out to carry out first-class repair;
if the situation D is met, S2.2 is entered for second-class repair;
s2 repair
S2.1 class repair
S2.1.1 thread cutting head
Performing head cutting treatment on the thread needing head cutting;
s2.1.2 thread processing and screwing
For the thread cutting head of the male end, machining qualified threads again;
for the thread cutting head at the end of the coupling, after qualified threads are processed, the coupling is screwed down, and thread protectors are screwed on two ends according to requirements, and S2.3 is entered;
s2.2 class II repair
S2.2.1 grinding
Polishing the root of the thread until the thread tight distance is qualified;
s2.2.2 coating antirust oil and screwing the thread protector, and entering S2.3;
s2.3 Rust removal
Removing rust and pollutants on the old sleeve to ensure that the roughness reaches Rz40-75 mu m;
s2.4 coating protection and spray mark
And spraying an antirust coating on the derusted old casing pipe, and marking to finish repairing.
6. The sorting repair method of claim 5, further comprising:
s3 third party verification
And (5) checking the appearance geometric dimension and the thread of the repaired old casing by a third party, and delivering for use after the inspection is qualified.
7. The sorting repair method according to claim 6, characterized in that:
and S1.2.1, cleaning the thread grease and the anti-rust oil in the sleeve thread by using a cleaning agent.
8. The sorting repair method according to claim 7, characterized in that:
s2.1.1, the thread to be cut is cut by a machine tool or a saw.
9. The sorting repair method according to claim 8, characterized in that:
s2.2.1, adopting sand paper and oilstone to polish and repair the root of the thread until the thread tight distance is qualified, so that the root of the thread has no corrosion product and corrosion pit.
10. The sorting repair method according to claim 9, characterized in that:
s2.3, performing shot blasting rust removal treatment on the old sleeve by using rust removal equipment, removing rust and pollutants on the sleeve, exposing the natural color of the metal and enabling the roughness to reach Rz40-75 mu m;
in S2.4, the antirust coating is water-soluble.
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