CN105781529A - Depth measuring system and method for coiled tubing and coiled tubing cables - Google Patents
Depth measuring system and method for coiled tubing and coiled tubing cables Download PDFInfo
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- CN105781529A CN105781529A CN201410829424.9A CN201410829424A CN105781529A CN 105781529 A CN105781529 A CN 105781529A CN 201410829424 A CN201410829424 A CN 201410829424A CN 105781529 A CN105781529 A CN 105781529A
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Abstract
The invention discloses a depth measuring system and method for coiled tubing and coiled tubing cables. The depth measuring system comprises a marking device, a reading device and a determining device. The marking device is used for conducting magnetic heat treatment on specific local portions of the coiled tubing and the coiled tubing cables. The reading device is used for detecting the magnetic characteristic change of the specific local portions. The determining device is used for judging the current depth positions of the coiled tubing and the coiled tubing cables according to the magnetic characteristic change, thereby determining the current depth of the coiled tubing and the coiled tubing cables. The depth measuring system and method have the advantages that firstly, implementation is easy, the specific local portions of the coiled tubing and the coiled tubing cables are treated, the depth is measured by detecting the magnetic characteristic change, errors can be effectively eliminated, and accordingly the depth measurement precision is greatly improved; meanwhile, according to the method, a user just needs to arrange the reading device on the ground without burying special depth measurement tools in a shaft, and therefore the cost is low; and secondly, the expansibility is high, the method can be combined with other depth measurement methods, and mutual exclusion is avoided.
Description
Technical field
The present invention relates to a kind of coiled tubing and continuous pipe cable depth measures system and method.
Background technology
In prior art, the depth survey of coiled tubing is usually use roller and photoelectric encoder, and coiled tubing makes roller rotate by frictional force, and roller drives encoder, fathoming circuit its output pulse is counted, complete depth survey.The shortcoming of this depth measurement mode is to there is systematic error.One of source of error is the slip phenomenon between roller and coiled tubing, causes fathoming less than actual grade, if there are greasy dirt, water or ice in oil pipe surface, error can be bigger.Another kind of source of error is that mechanical wear makes roller diameter change, and causes fathoming more than actual grade.Based on former factor in actually used.This depth measurement method sometimes also in relation with the measurement apparatus at cylinder place, rotates the external diameter of the number of turns and cable hank, can draw rough depth value by measuring cylinder.
The patent documentation that publication No. is CN2112686U discloses a kind of magnetic signal marking instrument for well measuring cable depth, it is mainly by note magnetic circuit, midpoint detection circuit, computer circuits, and note magnetic coil, receiving coil composition, the significant drawback of the prior art is: can not carry out note magnetic on coiled tubing and continuous pipe cable, and being subject to the impact of the many factors such as down-hole complex environment, therefore the limitation of range of application is big.Also having some other methods to improve the depth survey precision of coiled tubing, typical method is exactly be hinged with specific purpose tool in oil pipe lower end, such as goes into the well with oil pipe with electronic machine, measures formation characteristics or sleeve pipe characteristic, draw accurate depth.For another example utilize machinery to go into the well with oil pipe, when it is by the default instrument of certain depth, is slightly hampered or blocks in advance, tension variation can be sensed on ground, can know that this machinery has had arrived at predetermined depth accordingly.The shortcoming of these methods is the need for extra instrument and goes into the well with oil pipe, operates more complicated, and cost is high.
Additionally, in heavy crude heat extraction operation, continuous pipe cable is well used, it is to form with the steel-pipe welding of long 10 meters, cost is lower than coiled tubing, and its application includes handling cable to target well section, with electric energy hot spot fire, DTS optical cable or thermocouple can also be carried to down-hole, measure the temperature of target well section.The current depth detecting method of continuous pipe cable is also only limitted to use roller and photoelectric encoder.Owing to well in operation is essentially all heavy oil wells, the outer greasy dirt that will adhere to one layer of Colophonium shape of pipe after going into the well for the first time, causes roller slip phenomenon more serious, owing to the continuous pipe outside diameter of cable is less, being generally no greater than 30mm, less employing mounts the scheme that extra depth measurement instrument is gone into the well.Therefore, the total accuracy of sounding of continuous pipe cable is also required to better solution.
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency, it is provided that a kind of coiled tubing and continuous pipe cable depth measure system and method, and it realizes simple, reaches depth measurement goal of the invention accurately.
To achieve these goals, the technical solution used in the present invention is: a kind of coiled tubing and continuous pipe cable depth measure system, it is characterised in that including: marking device, for the specific portion of coiled tubing and continuous pipe cable is carried out magnetic-field heat treatment；Reading device, for detecting the magnetic characteristic change of described specific portion；Determine device, for changing according to described magnetic characteristic, it is determined that the current depth location of coiled tubing and continuous pipe cable, so that it is determined that the current depth of described coiled tubing and continuous pipe cable.
Further, described marking device includes: temperature conditioning unit and Energizing unit, wherein, temperature conditioning unit, for being heated described specific portion, using as magnetic marker region, and when being applied magnetic field by described Energizing unit, described magnetic marker region is incubated, then, carry out controlled cooling, with Formation Depth mark part；Energizing unit, for applying the magnetic field in the axially consistent direction with coiled tubing and continuous pipe cable.
Further, described reading device includes: coil and/or Hall element.
Further, described reading device includes sensor array.
Further, described determining that device includes microprocessor, it is attached by wired or wireless mode and described reading device.
Another object of the present invention is to provide a kind of coiled tubing and continuous pipe cable depth measuring method, it is characterised in that including: the specific portion of coiled tubing and continuous pipe cable is carried out magnetic-field heat treatment；Detect the magnetic characteristic change of described specific portion；Change according to described magnetic characteristic, it is determined that the current depth location of coiled tubing and continuous pipe cable, so that it is determined that the current depth of described coiled tubing and continuous pipe cable.
Further, the step that the described specific portion to coiled tubing and continuous pipe cable carries out magnetic-field heat treatment includes: first, described specific portion is heated, using as magnetic marker region, and under the action of a magnetic field, described magnetic marker region is incubated, then, carry out controlled cooling, with Formation Depth mark part.
Further, the step of the current depth location of described judgement coiled tubing and continuous pipe cable includes: when the exceptional value L of pcrmeability being detected, coiled tubing and the current depth location T of continuous pipe cable then being detected, the current depth Y of described coiled tubing and continuous pipe cable is obtained by following algorithm:
Y=m × T+n
Wherein, m is the characteristic information of sounding mark part, and n is the initial position of detection coiled tubing and continuous pipe cable, and described characteristic information includes the number of sounding mark part or the width of sounding mark part.
Further, described sounding mark part includes at least one labelling, described in be labeled as equal in width, and/or unequal width.
Further, it is equally spaced between described labelling, and/or unequal-interval.
The invention have the benefit that
First, it is achieved simple, the specific portion of coiled tubing and continuous pipe cable is processed, fathoms by detecting the change of magnetic characteristic, it is possible to effectively eliminate the error that aforementioned roller measuring method introduces, so that total accuracy of sounding greatly improves.Meanwhile, the method has only to arrange reading device on ground, it is not necessary to enter special depth measurement instrument under down-hole, less costly.
Second, autgmentability is strong, can combine with other depth measurement method, the problem being absent from mutual exclusion, such as roller can being adopted to measure, its output pulse is input to same computer, the degree of depth that two kinds of methods record is merged in software simultaneously, the measurement data of roller real time reaction can go out the change of the degree of depth, and the measurement data of reading device then can be used to eliminate roller and measures the error produced.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing further understanding of the present application, constitutes the part of the application, and the schematic description and description of the application is used for explaining the application, is not intended that the improper restriction to the application.In the accompanying drawings:
Fig. 1 is the structure principle chart that the coiled tubing of the present invention and continuous pipe cable depth measure system；
Fig. 2 is the example structure schematic diagram of the marking device of system shown in Figure 1；
Fig. 3 is the flow chart of the coiled tubing of the present invention and continuous pipe cable depth measuring method.
Detailed description of the invention
As employed some vocabulary in the middle of description and claim to censure specific components.Those skilled in the art are it is to be appreciated that hardware manufacturer may call same assembly with different nouns.This specification and claims are not used as distinguishing in the way of assembly by the difference of title, but are used as the criterion distinguished with assembly difference functionally." comprising " as mentioned in the middle of description and claim in the whole text is an open language, therefore should be construed to " comprise but be not limited to "." substantially " referring in receivable range of error, those skilled in the art can solve described technical problem within the scope of certain error, basically reaches described technique effect.Description subsequent descriptions is implement the better embodiment of the application, and right described description is for the purpose of the rule so that the application to be described, is not limited to scope of the present application.The protection domain of the application is when being as the criterion depending on the defined person of claims.
Embodiment 1
Refer to Fig. 1, the coiled tubing of the present invention and continuous pipe cable depth are measured system and are included: marking device 100, for the specific portion of coiled tubing and continuous pipe cable is carried out magnetic-field heat treatment；Reading device 200, for detecting the magnetic characteristic change of described specific portion；Determine device 300, for changing according to described magnetic characteristic, it is determined that the current depth location of coiled tubing and continuous pipe cable, so that it is determined that the current depth of described coiled tubing and continuous pipe cable.
Preferably, described magnetic characteristic includes pcrmeability.
As specific embodiment, described magnetic-field heat treatment includes improving pcrmeability.
Refer to Fig. 2, described marking device 100 includes: temperature conditioning unit 101 and Energizing unit 102, wherein, temperature conditioning unit 101, for being heated described specific portion, reach the Curie point of coiled tubing material, using as magnetic marker region, and under the action of a magnetic field, described magnetic marker region is incubated, then, carry out controlled cooling, using as sounding mark part；Energizing unit 102, for applying the magnetic field in the axially consistent direction with coiled tubing and continuous pipe cable in described sounding mark part.
As specific embodiment, magnetic marker region being heated to 780～830 DEG C slightly above Curie point, applying temperature retention time behind magnetic field is 30～60min, controlled is cooled to 300～350 DEG C, is naturally cooling to less than 200 DEG C recession and removes magnetic field, can improve pcrmeability.
Preferably, temperature conditioning unit 101 can adopt fired heater and attemperator, it would however also be possible to employ alternating current impression heater, or heating wire.
Preferably, Energizing unit 102 can adopt permanent magnet, and described Energizing unit 102 can also adopt logical galvanic coil.Energizing unit 102 applies the direction in magnetic field can be axially consistent with oil pipe, it is also possible to applies the magnetic field in other direction.
Preferably, the Core Feature of described reading device is the pcrmeability change of test material.Device may be mounted at well head appropriate location and carries out on-line checking, it would however also be possible to employ portable forms, with hand-held, the coiled tubing dismantling ground is detected.
Preferably, described reading device includes: coil, and described coil encircling coiled tubing and continuous pipe cable are arranged, or are arranged at coiled tubing and the side of continuous pipe cable.
Preferably, described reading device also includes Hall element.
Preferably, described determining that device includes microprocessor, it is attached by wired or wireless mode and described reading device, as specific embodiment, it is possible to for industrial computer or DSP.
Preferably, it is determined that device carries out communication by computer interface and reading device, it is possible to read the detected value of reaction coiled tubing pcrmeability in real time.When exceptional value being detected, it is believed that magnetic marker detected.
As specific embodiment, described determining that device also includes display, it connects described microprocessor, so that the change of the magnetic characteristic of coiled tubing and the specific portion of continuous pipe to be displayed.
The present invention also provides for a kind of coiled tubing and continuous pipe cable depth measuring method, including: S100, the specific portion of coiled tubing and continuous pipe cable is carried out magnetic-field heat treatment；S200, detects the magnetic characteristic change of described specific portion；S300, changes according to described magnetic characteristic, it is determined that the current depth location of coiled tubing and continuous pipe cable, so that it is determined that the current depth of described coiled tubing and continuous pipe cable.
Preferably, the step of the current depth location of described judgement coiled tubing and continuous pipe cable includes: when the exceptional value L of pcrmeability being detected, coiled tubing and the current depth location T of continuous pipe cable then being detected, the current depth Y of described coiled tubing and continuous pipe cable is obtained by following algorithm:
Y=m × T+n
Wherein, m is the characteristic information of sounding mark part, and n is the initial position of detection coiled tubing and continuous pipe cable, and described characteristic information includes the number of sounding mark part or the width of sounding mark part.
The change direction of pcrmeability exception is relevant with the excitation direction adopted in magnetic-field heat treatment, also relevant with the sensor design of reading device.Labelling can be made to present pcrmeability accordingly higher or on the low side.
Preferably, described sounding mark part includes at least one labelling, described in be labeled as equal in width, and/or unequal width.
Preferably, it is equally spaced between described labelling, and/or unequal-interval.
As specific embodiment, it is possible to representing the degree of depth by a magnetic marker is 1000 meters, it is 2000 meters that two continuous print magnetic marker represent the degree of depth.Often the mark pattern of set coiled tubing and continuous pipe cable depth can save as data base, for depth recognition and display software.
Embodiment 2
The coiled tubing of the present embodiment and continuous pipe cable depth are measured system and are included: marking device 100, for the specific portion of coiled tubing and continuous pipe cable is carried out magnetic-field heat treatment；Reading device 200, for detecting the magnetic characteristic change of described specific portion；Determine device 300, for changing according to described magnetic characteristic, it is determined that the current depth location of coiled tubing and continuous pipe cable, so that it is determined that the current depth of described coiled tubing and continuous pipe cable.
Preferably, described magnetic characteristic includes the squareness ratio of hysteresis curve.
As specific embodiment, described magnetic-field heat treatment includes the squareness ratio improving hysteresis curve, or makes pcrmeability keep invariable within the scope of certain magnetic field.
Preferably, adopting longitudinally magnetic heat treatment, the flow direction that namely during heat treatment, magnetic direction is actually used with coiled tubing is identical.
Preferably, adopting transverse magnetic field heat treatment, the flow direction that namely during heat treatment, magnetic direction is actually used with coiled tubing is perpendicular.
Preferably, described marking device 100 includes: temperature conditioning unit 101 and Energizing unit 102, wherein, temperature conditioning unit 101, for being heated described specific portion, reach the Curie point of coiled tubing material, using as magnetic marker region, and under the action of a magnetic field, described magnetic marker region is incubated, then, carry out controlled cooling, using as sounding mark part；Energizing unit 102, for applying the magnetic field in the axially consistent direction with coiled tubing and continuous pipe cable in described sounding mark part.
As specific embodiment, magnetic marker region is heated to 600～700 DEG C slightly below Curie point, after applying longitudinal magnetic field, temperature retention time is 60～90min, controlled cooling respectively with 300 DEG C/time, 280 DEG C/time, 260 DEG C/time be cooled to 300 DEG C, be naturally cooling to less than 200 DEG C recession except magnetic field, hysteresis curve figure steepening stands, and loop line area is substantially reduced.
Preferably, temperature conditioning unit 101 can adopt fired heater and attemperator, it would however also be possible to employ alternating current impression heater, or heating wire.
Preferably, Energizing unit 102 can adopt permanent magnet, and described Energizing unit 102 can also adopt logical galvanic coil.Energizing unit 102 applies the direction in magnetic field can be axially consistent with oil pipe, it is also possible to applies the magnetic field in other direction.
Preferably, described reading device includes: coil, and described coil encircling coiled tubing and continuous pipe cable are arranged, or are arranged at coiled tubing and the side of continuous pipe cable.
Preferably, described reading device also includes Hall element.
Preferably, described determining that device includes microprocessor, it is attached by wired or wireless mode and described reading device.
As specific embodiment, described determining that device also includes display, it connects described microprocessor, so that the change of the magnetic characteristic of coiled tubing and the specific portion of continuous pipe to be displayed.
The present embodiment also provides for a kind of coiled tubing and continuous pipe cable depth measuring method, including: S100, the specific portion of coiled tubing and continuous pipe cable is carried out magnetic-field heat treatment；S200, detects the magnetic characteristic change of described specific portion；S300, changes according to described magnetic characteristic, it is determined that the current depth location of coiled tubing and continuous pipe cable, so that it is determined that the current depth of described coiled tubing and continuous pipe cable.
Preferably, the step of the current depth location of described judgement coiled tubing and continuous pipe cable includes: when the exceptional value L of pcrmeability being detected, coiled tubing and the current depth location T of continuous pipe cable then being detected, the current depth Y of described coiled tubing and continuous pipe cable is obtained by following algorithm:
Y=m × T+n
Wherein, m is the characteristic information of sounding mark part, and n is the initial position of detection coiled tubing and continuous pipe cable, and described characteristic information includes the number of sounding mark part or the width of sounding mark part.
The change direction that the squareness ratio of hysteresis curve is abnormal is relevant with the excitation direction adopted in magnetic-field heat treatment, also relevant with the sensor design of reading device.Labelling can be made to present pcrmeability accordingly higher or on the low side.
Preferably, described sounding mark part includes at least one labelling, described in be labeled as equal in width, and/or unequal width.
Preferably, it is equally spaced between described labelling, and/or unequal-interval.
As specific embodiment, it is possible to represent 1000 meters by the magnetic marker of width 100mm, represent 2000 meters by the magnetic marker of width 200mm.Use roller as the supplementary means measuring magnetic marker width.Often the mark pattern of set coiled tubing and continuous pipe cable depth can save as data base, for depth recognition and display software.
Embodiment 3
The coiled tubing of the present embodiment and continuous pipe cable depth are measured system and are included: marking device 100, for the specific portion of coiled tubing and continuous pipe cable is carried out magnetic-field heat treatment；Reading device 200, for detecting the magnetic characteristic change of described specific portion；Determine device 300, for changing according to described magnetic characteristic, it is determined that the current depth location of coiled tubing and continuous pipe cable, so that it is determined that the current depth of described coiled tubing and continuous pipe cable.
Preferably, described magnetic characteristic includes pcrmeability.
As specific embodiment, described magnetic-field heat treatment includes improving pcrmeability.
Preferably, described marking device 100 includes: temperature conditioning unit 101 and Energizing unit 102, wherein, temperature conditioning unit 101, for being heated described specific portion, reach the Curie point of coiled tubing material, using as magnetic marker region, and under the action of a magnetic field, described magnetic marker region is incubated, then, carry out controlled cooling, using as sounding mark part；Energizing unit 102, for applying the magnetic field in the axially consistent direction with coiled tubing and continuous pipe cable in described sounding mark part.
As specific embodiment, magnetic marker region being heated to 780～830 DEG C slightly above Curie point, applying temperature retention time behind magnetic field is 30～60min, controlled is cooled to 300～350 DEG C, is naturally cooling to less than 200 DEG C recession and removes magnetic field, can improve pcrmeability.
Preferably, temperature conditioning unit 101 can adopt fired heater and attemperator, it would however also be possible to employ alternating current impression heater, or heating wire.
Preferably, Energizing unit 102 can adopt permanent magnet, and described Energizing unit 102 can also adopt logical galvanic coil.Energizing unit 102 applies the direction in magnetic field can be axially consistent with oil pipe, it is also possible to applies the magnetic field in other direction.
Preferably, described reading device includes: coil, and described coil encircling coiled tubing and continuous pipe cable are arranged, or are arranged at coiled tubing and the side of continuous pipe cable.
Preferably, described reading device also includes Hall element.
Preferably, described determining that device includes microprocessor, it is attached by wired or wireless mode and described reading device.
As specific embodiment, described determining that device also includes display, it connects described microprocessor, so that the change of the magnetic characteristic of coiled tubing and the specific portion of continuous pipe to be displayed.
The present embodiment also provides for a kind of coiled tubing and continuous pipe cable depth measuring method, including: S100, the specific portion of coiled tubing and continuous pipe cable is carried out magnetic-field heat treatment；S200, detects the magnetic characteristic change of described specific portion；S300, changes according to described magnetic characteristic, it is determined that the current depth location of coiled tubing and continuous pipe cable, so that it is determined that the current depth of described coiled tubing and continuous pipe cable.
Preferably, the step of the current depth location of described judgement coiled tubing and continuous pipe cable includes: when the exceptional value L of pcrmeability being detected, coiled tubing and the current depth location T of continuous pipe cable then being detected, the current depth Y of described coiled tubing and continuous pipe cable is obtained by following algorithm:
Y=m × T+n
Wherein, m is the characteristic information of sounding mark part, and n is the initial position of detection coiled tubing and continuous pipe cable, and described characteristic information includes the number of sounding mark part or the width of sounding mark part.
The change direction of pcrmeability exception is relevant with the excitation direction adopted in magnetic-field heat treatment, also relevant with the sensor design of reading device.Labelling can be made to present pcrmeability accordingly higher or on the low side.
Preferably, described sounding mark part includes at least one labelling, described in be labeled as equal in width, and/or unequal width.
Preferably, it is equally spaced between described labelling, and/or unequal-interval.
As specific embodiment, certain set coiled tubing is mainly used in 3000 meters with the operation of the section of going into the well, then just first 2000 meters of oil pipe can add less or be not added with magnetic marker.Often the mark pattern of set coiled tubing and continuous pipe cable depth can save as data base, for depth recognition and display software.
Embodiment 4
The coiled tubing of the present embodiment and continuous pipe cable depth are measured system and are included: marking device 100, for the specific portion of coiled tubing and continuous pipe cable is carried out magnetic-field heat treatment；Reading device 200, for detecting the magnetic characteristic change of described specific portion；Determine device 300, for changing according to described magnetic characteristic, it is determined that the current depth location of coiled tubing and continuous pipe cable, so that it is determined that the current depth of described coiled tubing and continuous pipe cable.
Preferably, described magnetic characteristic includes the squareness ratio of hysteresis curve.
As specific embodiment, described magnetic-field heat treatment includes the squareness ratio improving hysteresis curve, or makes pcrmeability keep invariable within the scope of certain magnetic field.
Preferably, adopting longitudinally magnetic heat treatment, the flow direction that namely during heat treatment, magnetic direction is actually used with coiled tubing is identical.
Preferably, adopting transverse magnetic field heat treatment, the flow direction that namely during heat treatment, magnetic direction is actually used with coiled tubing is perpendicular.
Preferably, described marking device 100 includes: temperature conditioning unit 101 and Energizing unit 102, wherein, temperature conditioning unit 101, for being heated described specific portion, reach the Curie point of coiled tubing material, using as magnetic marker region, and under the action of a magnetic field, described magnetic marker region is incubated, then, carry out controlled cooling, using as sounding mark part；Energizing unit 102, for applying the magnetic field in the axially consistent direction with coiled tubing and continuous pipe cable in described sounding mark part.
As specific embodiment, magnetic marker region is heated to 600～700 DEG C slightly below Curie point, after applying longitudinal magnetic field, temperature retention time is 60～90min, controlled cooling respectively with 300 DEG C/time, 280 DEG C/time, 260 DEG C/time be cooled to 300 DEG C, be naturally cooling to less than 200 DEG C recession except magnetic field, hysteresis curve figure steepening stands, and loop line area is substantially reduced.
Preferably, temperature conditioning unit 101 can adopt fired heater and attemperator, it would however also be possible to employ alternating current impression heater, or heating wire.
Preferably, Energizing unit 102 can adopt permanent magnet, and described Energizing unit 102 can also adopt logical galvanic coil.Energizing unit 102 applies the direction in magnetic field can be axially consistent with oil pipe, it is also possible to applies the magnetic field in other direction.
Preferably, described reading device includes: coil, and described coil encircling coiled tubing and continuous pipe cable are arranged, or are arranged at coiled tubing and the side of continuous pipe cable.
Preferably, described reading device also includes Hall element.
Preferably, described determining that device includes microprocessor, it is attached by wired or wireless mode and described reading device.
As specific embodiment, described determining that device also includes display, it connects described microprocessor, so that the change of the magnetic characteristic of coiled tubing and the specific portion of continuous pipe to be displayed.
The present embodiment also provides for a kind of coiled tubing and continuous pipe cable depth measuring method, including: S100, the specific portion of coiled tubing and continuous pipe cable is carried out magnetic-field heat treatment；S200, detects the magnetic characteristic change of described specific portion；S300, changes according to described magnetic characteristic, it is determined that the current depth location of coiled tubing and continuous pipe cable, so that it is determined that the current depth of described coiled tubing and continuous pipe cable.
Preferably, the step of the current depth location of described judgement coiled tubing and continuous pipe cable includes: when the exceptional value L of pcrmeability being detected, coiled tubing and the current depth location T of continuous pipe cable then being detected, the current depth Y of described coiled tubing and continuous pipe cable is obtained by following algorithm:
Y=m × T+n
Wherein, m is the characteristic information of sounding mark part, and n is the initial position of detection coiled tubing and continuous pipe cable, and described characteristic information includes the number of sounding mark part or the width of sounding mark part.
The change direction that the squareness ratio of hysteresis curve is abnormal is relevant with the excitation direction adopted in magnetic-field heat treatment, also relevant with the sensor design of reading device.Labelling can be made to present pcrmeability accordingly higher or on the low side.
Preferably, described sounding mark part includes at least one labelling, described in be labeled as equal in width, and/or unequal width.
Preferably, it is equally spaced between described labelling, and/or unequal-interval.
As specific embodiment, certain set coiled tubing pays particular attention to depth survey when mentioning near well head, to prevent the instrument of oil pipe lower end from colliding with wellhead blowout preventer, more magnetic marker so can be added in oil pipe bottom, such as in the every 100 meters of magnetic marker of normal pipeline section, and 20 meters, bottom can every 1 meter of magnetic marker, so when oil pipe soon rises to well head, it is possible to more accurately determine tubing depth.Often the mark pattern of set coiled tubing and continuous pipe cable depth can save as data base, for depth recognition and display software.
Embodiment 5
Adopt magnetic-field heat treatment to a dish or a collection of coiled tubing or before pipe carries out mass magnetic marker process continuously, test method can be first passed through and determine rational magnetic-field heat treatment technological parameter, including heating, insulation and cooling method, excitation mode, applied mechanical tension type etc..According to test data, consider magnetic marker treatment effect, on coiled tubing or the continuously impact of pipe performance, heat treatment energy consumption, heat treatment time, the difficulty of excitation mode, applied mechanical stress the compromise of the many factors such as difficulty, it is determined that the technological parameter of magnetic-field heat treatment.
Such as, during using pcrmeability as magnetic characteristic, from 350 DEG C of beginnings, to 800 DEG C, select a temperature spot as heat treated heating-up temperature every 50 DEG C, temperature retention time is respectively adopted 5 minutes, 15 minutes, 30 minutes, 60 minutes, cooling rate is respectively adopted 120 DEG C/h, 300 DEG C/h, 600 DEG C/h, excitation mode is respectively adopted longitudinal magnetic field and transverse magnetic field, coiled tubing or continuous pipe are applied the axial tension of 2 tons respectively and do not apply axial force, result by above-mentioned parameter composite test, pcrmeability in magnetic marker increases by more than 5%, in heat treatment time parameter combination within 3 hours, select energy consumption less one group as final magnetic-field heat treatment technological parameter.
The invention have the benefit that
First, it is achieved simple, the specific portion of coiled tubing and continuous pipe cable is processed, fathoms by detecting the change of pcrmeability, it is possible to effectively eliminate the error that aforementioned roller measuring method introduces, so that total accuracy of sounding greatly improves.Meanwhile, the method has only to arrange reading device on ground, it is not necessary to enter special depth measurement instrument under down-hole, less costly.
Second, autgmentability is strong, can combine with other depth measurement method, the problem being absent from mutual exclusion, such as roller can being adopted to measure, its output pulse is input to same computer, the degree of depth that two kinds of methods record is merged in software simultaneously, the measurement data of roller real time reaction can go out the change of the degree of depth, and the measurement data of reading device then can be used to eliminate roller and measures the error produced.
Described above illustrate and describes some preferred embodiments of the application, but as previously mentioned, it is to be understood that the application is not limited to form disclosed herein, it is not to be taken as the eliminating to other embodiments, and can be used for other combinations various, amendment and environment, and in application contemplated scope described herein, can be modified by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change are without departing from spirit and scope, then all should in the protection domain of the application claims.
Claims (10)
1. a coiled tubing and continuous pipe cable depth measure system, it is characterised in that including:
Marking device, for carrying out magnetic-field heat treatment to the specific portion of coiled tubing and continuous pipe cable；
Reading device, for detecting the magnetic characteristic change of described specific portion；
Determine device, for changing according to described magnetic characteristic, it is determined that the current depth location of coiled tubing and continuous pipe cable, so that it is determined that the current depth of described coiled tubing and continuous pipe cable.
2. coiled tubing according to claim 1 and continuous pipe cable depth measure system, it is characterised in that described marking device includes: temperature conditioning unit and Energizing unit, wherein,
Temperature conditioning unit, for described specific portion is heated, using as magnetic marker region, and is incubated described magnetic marker region when being applied magnetic field by described Energizing unit, then, carries out controlled cooling, with Formation Depth mark part；
Energizing unit, for applying the magnetic field in the axially consistent direction with coiled tubing and continuous pipe cable.
3. coiled tubing according to claim 2 and continuous pipe cable depth measure system, it is characterised in that described reading device includes: coil and/or Hall element.
4. coiled tubing according to claim 2 and continuous pipe cable depth measure system, it is characterised in that described reading device includes sensor array.
5. coiled tubing according to claim 3 or 4 and continuous pipe cable depth measure system, it is characterised in that: described determining that device includes microprocessor, it is attached by wired or wireless mode and described reading device.
6. a coiled tubing and continuous pipe cable depth measuring method, it is characterised in that including:
The specific portion of coiled tubing and continuous pipe cable is carried out magnetic-field heat treatment；
Detect the magnetic characteristic change of described specific portion；
Change according to described magnetic characteristic, it is determined that the current depth location of coiled tubing and continuous pipe cable, so that it is determined that the current depth of described coiled tubing and continuous pipe cable.
7. coiled tubing according to claim 6 and continuous pipe cable depth measuring method, it is characterised in that the step that the described specific portion to coiled tubing and continuous pipe cable carries out magnetic-field heat treatment includes:
First, described specific portion is heated, using as magnetic marker region, and under the action of a magnetic field, described magnetic marker region is incubated, then, carries out controlled cooling, with Formation Depth mark part.
8. coiled tubing according to claim 6 and continuous pipe cable depth measuring method, it is characterized in that, the step of the current depth location of described judgement coiled tubing and continuous pipe cable includes: when the exceptional value L of pcrmeability being detected, coiled tubing and the current depth location T of continuous pipe cable then being detected, the current depth Y of described coiled tubing and continuous pipe cable is obtained by following algorithm:
Y=m × T+n
Wherein, m is the characteristic information of sounding mark part, and n is the initial position of detection coiled tubing and continuous pipe cable, and described characteristic information includes the number of sounding mark part or the width of sounding mark part.
9. coiled tubing according to claim 7 or 8 and continuous pipe cable depth measuring method, it is characterised in that: described sounding mark part includes at least one labelling, described in be labeled as equal in width, and/or unequal width.
10. coiled tubing according to claim 9 and continuous pipe cable depth measuring method, it is characterised in that: it is equally spaced between described labelling, and/or unequal-interval.
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| CN201410829424.9A CN105781529A (en) | 2014-12-26 | 2014-12-26 | Depth measuring system and method for coiled tubing and coiled tubing cables |
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| CN201410829424.9A CN105781529A (en) | 2014-12-26 | 2014-12-26 | Depth measuring system and method for coiled tubing and coiled tubing cables |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107632061A (en) * | 2017-10-10 | 2018-01-26 | 中石化四机石油机械有限公司 | A kind of labeling method of coiled tubing on-line checking defect |
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