CN105443108A - Telemetering system and method for oil-gas well - Google Patents
Telemetering system and method for oil-gas well Download PDFInfo
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- CN105443108A CN105443108A CN201510993880.1A CN201510993880A CN105443108A CN 105443108 A CN105443108 A CN 105443108A CN 201510993880 A CN201510993880 A CN 201510993880A CN 105443108 A CN105443108 A CN 105443108A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
- E21B47/16—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the drill string or casing, e.g. by torsional acoustic waves
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
Abstract
The invention provides a telemetering system and method for an oil-gas well. The system comprises an underground transceiving device and an aboveground transceiving device. The underground transceiving device comprises a working cylinder and a fixed connector. The aboveground transceiving device comprises a base body, a first signal isolation cavity, a second signal isolation cavity, a sound-light control unit, an optical demodulation unit, a piezoelectric signal transmitting unit and a signal modulation unit. By means of the system and method, data produced in the underground testing process can be obtained in real time, and the underground testing process is guided in time.
Description
Technical field
The application relates to oil gas field production gas technology field, particularly a kind of telemetry system for Oil/gas Well and the method for telemetering.
Background technology
At oil-gas exploration and development in earlier stage, when after drilling and well completion has been constructed and before putting into serial production, needed to test oil-gas Layer.Hydrocarbon test is extremely important, main contents comprise implement perforating job to make reservoir be communicated with pit shaft, the measurement of every formation parameter, the evaluation of oil-gas Layer dynamic parameter, the sampling of reservoir fluid and reservoir rock sampling etc.Main purpose is: evaluate oil-gas Layer production capacity, measure oil-gas Layer parameters (each layer temperature, pressure, permeability, degree of porosity etc.), carry out reservoir fluid Physical Property Analysis, evaluate oil-gas Layer Production development (pressure buildup test etc.), revise reservoir models, reserves and production forecast and provide important evidence etc. for later development programming.In hydrocarbon test process, how accurately, complete obtain measure, sampling and analyzing data become the key of whole test.At present, oil-gas Layer test generally adopts drill stem testing (DST) technique, and this technique is applicable to the new well compared with big hole, and for the special well type such as producing well of slim hole well, sidetracked hole, marginal field, DST costly.The downhole tool that a lot of annular pressure controls also is related to, as tubing string testing valve, circulating valve, down-hole sampler, tubing conveyed perforating appliances in conventional drill test (DST).The annular pressure of maximum permission has become the limiting factor of a lot of hydrocarbon test operation, and reduces the flexibility of downhole testing design of string pipe.
In addition, what existing Oil/gas Well formation testing gas testing technique adopted is all memory-type monitoring technology, data is stored, trip out test string after waiting the end of job between oil and gas well testing operational period, downloading data to computer to carry out processing and explaining.The shortcoming of this technology is obvious: field operation is not on-line monitoring, and data capacity limits by memory device, can not carry out real-time instruction to test jobs, can not according to reservoir actual conditions dynamic conditioning testing scheme etc.
Above it should be noted that, just conveniently to the technical scheme of the application, clear, complete explanation is carried out to the introduction of technical background, and facilitate the understanding of those skilled in the art to set forth.Only can not think that technique scheme is conventionally known to one of skill in the art because these schemes have carried out setting forth in the background technology part of the application.
Summary of the invention
The object of the embodiment of the present application is to provide a kind of telemetry system for Oil/gas Well and the method for telemetering, data that can produce in Real-time Obtaining downhole testing process and instructing downhole testing process in time.
A kind of telemetry system for Oil/gas Well that the embodiment of the present application provides and the method for telemetering are achieved in that
A kind of telemetry system for Oil/gas Well, comprise down-hole R-T unit and ground R-T unit, described down-hole R-T unit comprises seating nipple and anchor tip, described seating nipple is fixedly connected with oil pipe body by described anchor tip, described ground R-T unit is fixed on the oil pipe body between hydraulic pressure injection head and well-control blowout prevention device, described ground R-T unit comprises matrix, first signal separate cavities, secondary signal separate cavities, controlled by sound and light unit, Optical Demodulation unit, piezoelectric signal transmitter unit and signal madulation unit, one end of described controlled by sound and light unit is embedded in described matrix, the other end is connected with described first signal separate cavities, one end of described piezoelectric signal transmitter unit is embedded in described matrix, the other end is connected with described secondary signal separate cavities, described oil pipe body runs through described first signal separate cavities and described secondary signal separate cavities, the liquid for transmitting sound wave is all filled with in described first signal separate cavities and described secondary signal separate cavities, described Optical Demodulation unit to be fixed on described matrix and to be connected with described controlled by sound and light unit, described signal madulation unit to be fixed on described matrix and to be connected with described piezoelectric signal transmitter unit.
For a method of telemetering for Oil/gas Well, comprising:
Monitored data under the R-T unit production wells of down-hole, and the monitored data of collection is converted to sound wave pulse signal;
Described sound wave pulse signal is sent to ground R-T unit by oil pipe body by described down-hole R-T unit;
Described sound wave pulse signal is converted to the signal of telecommunication by described ground R-T unit, and extracts described monitored data from the described signal of telecommunication.
A kind of telemetry system for Oil/gas Well that the embodiment of the present application provides and the method for telemetering, by arranging down-hole R-T unit and ground R-T unit, thus can ensure the intercommunication of underground monitoring data and ground control instruction.In addition, the embodiment of the present application is using the transmission medium of oil pipe body as sound wave pulse signal, thus go for oil-gas Layer test and the underground work technique of coiled tubing, can better for the special well type such as producing well of slim hole well, sidetracked hole, marginal field provides service.
With reference to explanation hereinafter and accompanying drawing, disclose in detail the particular implementation of the application, the principle specifying the application can adopted mode.Should be appreciated that, thus the embodiment of the application is not restricted in scope.In the spirit of claims and the scope of clause, the embodiment of the application comprises many changes, amendment and is equal to.
The feature described for a kind of embodiment and/or illustrate can use in one or more other embodiment in same or similar mode, combined with the feature in other embodiment, or substitutes the feature in other embodiment.
Should emphasize, term " comprises/comprises " existence referring to feature, one integral piece, step or assembly when using herein, but does not get rid of the existence or additional of one or more further feature, one integral piece, step or assembly.
Accompanying drawing explanation
Included accompanying drawing is used to provide the further understanding to the embodiment of the present application, which constitutes a part for manual, for illustrating the embodiment of the application, and comes together to explain the principle of the application with text description.Apparently, the accompanying drawing in the following describes is only some embodiments of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.In the accompanying drawings:
Fig. 1 is the system construction drawing of coiled tubing field operation;
A kind of structure chart for down-hole R-T unit in the telemetry system of Oil/gas Well that Fig. 2 provides for the embodiment of the present application;
A kind of structure chart for ground R-T unit in the telemetry system of Oil/gas Well that Fig. 3 provides for the embodiment of the present application;
The flow chart of the underground communica tion channel simulation testing that Fig. 4 provides for the embodiment of the present application;
The earth background noise samples that Fig. 5 provides for the embodiment of the present application and simulation test flow chart;
A kind of method of telemetering flow chart for Oil/gas Well that Fig. 6 provides for the embodiment of the present application.
Detailed description of the invention
Technical scheme in the application is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making other embodiments all obtained under creative work prerequisite, all should belong to the scope of the application's protection.
At present, these special well type such as producing well of slim hole well, sidetracked hole, marginal field are more suitable for based on the oil-gas Layer test of coiled tubing and underground work technique.Fig. 1 is the system construction drawing of coiled tubing field operation.As shown in Figure 1, the system of described coiled tubing field operation comprises roller of continuous oil pipe 1, coiled tubing body 2,22, gooseneck boom 3, hydraulic pressure injection head 4 and well-control blowout prevention device 5.Coiled tubing is a kind of stainless-steel pipe without box cupling, smooth outer surface manufactured by straight weld technique (ERW), and inside can through-flow body, is twisted on major diameter cylinder during use.At the scene during operation, coiled tubing is drawn out of the gooseneck boom entering hydraulic pressure injection head, and the gooseneck boom of arc plays tubing string guiding, reduces the effect of internal stress.In injection head, the chain group of fluid motor-driven can produce downward downforce or upper lifting force upwards to coiled tubing.After coiled tubing is subject to the load of injection head, enter special well control device (preventer) downwards, the topmost of well control device is blowout prevention box, the body close contact of the rubber sleeve in blowout prevention box and motion, can play the effect of removing tube surfaces dirt.After well head well control device, coiled tubing carries all tool combinations (BHA) and enters pit shaft.With band box cupling tubing string unlike, owing to there is no box cupling or joint, therefore substantially there is not the signal period property attenuation problem of band box cupling tubing string in coiled tubing.But ceaselessly move in the wellbore due to body during continuous oil pipe operation, so traditional fixed ground sound wave sending/receiving technology and corollary apparatus cannot be used in the operation process of coiled tubing.
The structure chart of a kind of telemetry system for Oil/gas Well that Fig. 2, Fig. 3 provide for the embodiment of the present application.Described telemetry system comprises down-hole R-T unit and ground R-T unit.Wherein, a kind of structure chart for down-hole R-T unit in the telemetry system of Oil/gas Well of providing for the embodiment of the present application of Fig. 2.A kind of structure chart for ground R-T unit in the telemetry system of Oil/gas Well that Fig. 3 provides for the embodiment of the present application.As shown in Figure 2, described down-hole R-T unit comprises seating nipple 7 and anchor tip 6, and described seating nipple 7 is fixedly connected with the first oil pipe body 21 of down-hole by described anchor tip 6.As shown in Figure 1, Figure 3, described ground R-T unit is fixed on the second oil pipe body 22 between hydraulic pressure injection head 4 and well-control blowout prevention device 5.It should be noted that, first oil pipe body described here and described second oil pipe body are the different pieces on same oil pipe body, here just for convenience, therefore limited by first, second before oil pipe body, but this does not show that described first oil pipe body is different oil pipe bodys from described second oil pipe body.Described ground R-T unit comprises matrix 13, first signal separate cavities 18, secondary signal separate cavities 19, controlled by sound and light unit 14, Optical Demodulation unit 8, piezoelectric signal transmitter unit 15 and signal madulation unit 11, one end of described controlled by sound and light unit 14 is embedded in described matrix 13, the other end is connected with described first signal separate cavities 18, one end of described piezoelectric signal transmitter unit 15 is embedded in described matrix 13, the other end is connected with described secondary signal separate cavities 19, described second oil pipe body 22 runs through described first signal separate cavities 18 and described secondary signal separate cavities 19, the liquid for transmitting sound wave is all filled with in described first signal separate cavities 18 and described secondary signal separate cavities 19, described Optical Demodulation unit 8 to be fixed on described matrix 13 and to be connected with described controlled by sound and light unit 14, described signal madulation unit 11 to be fixed on described matrix 13 and to be connected with described piezoelectric signal transmitter unit 15.
The monitored data that down-hole collects can be converted to sound wave pulse signal by described down-hole R-T unit, then by the second oil pipe body, described sound wave pulse signal is uploaded to the first oil pipe body on ground.Described ground R-T unit can receive from described first oil pipe body and transmit the sound wave pulse signal of coming, and by this sound wave pulse signal by optical modulation and opto-electronic conversion, thus described monitored data can be extracted from the signal of telecommunication after conversion.
In addition, described ground R-T unit can generate the signal of telecommunication comprising control instruction, and the described signal of telecommunication comprising control instruction is converted to sound wave pulse control signal.Described sound wave pulse control signal can be sent to described down-hole R-T unit by described second oil pipe body by described ground R-T unit.Described down-hole R-T unit thus described sound wave pulse control signal can be converted to the signal of telecommunication, and described control instruction is extracted from the signal of telecommunication after conversion.
Like this, described down-hole R-T unit and ground R-T unit just using the body of coiled tubing as transmission medium, can complete the process of data interchange.
Particularly, described controlled by sound and light unit 14 can comprise the laser for generation of preset wavelength and acoustic signals is modulated to the fibre-optical probe 24 on the laser of described preset wavelength.After what down-hole R-T unit generated comprise sound wave pulse signal transmission to the second oil pipe body 22 of monitored data, can be received by the first signal separate cavities 18.This sound wave pulse signal with the fluid coupling in the first signal separate cavities 18, can form sound pressure signal.This sound pressure signal can be received by described fibre-optical probe 24.Described fibre-optical probe 24 can produce the laser of preset wavelength, then this sound pressure signal can be modulated on the laser of described preset wavelength.Like this, the optical signal after optical modulation just can be sent to described Optical Demodulation list 8 yuan.After the operations such as the optical signal received carries out amplifying by described Optical Demodulation unit 8, digital filtering and signal receiving, just can extract the monitored data that down-hole R-T unit gathers.
This monitored data just can be transferred in the control system (not shown) on ground by optical cable 9 after extracting the monitored data of down-hole R-T unit collection by described Optical Demodulation unit 8.The control system on this ground thus can analyze the monitored data of down-hole R-T unit collection, thus assigning of control instruction can be carried out to down-hole R-T unit in real time according to the result analyzed.
This control instruction can be sent to signal madulation unit 11 by cable 10 after generating control instruction by the control system on ground.Described signal madulation unit 11 can be encoded to described control instruction, and the control instruction after coding is baseband signal.For the ease of the transmission of signal, described signal madulation unit 11 can by described modulates baseband signals on high-frequency carrier signal.The signal of telecommunication needed for piezoelectric signal transmitter unit 15 can be thought through the signal of telecommunication of high frequency modulated.Described piezoelectric signal transmitter unit 15 can comprise the transducer 25 for converting electrical signals to acoustic signals.Described transducer 25 can be such as piezoelectric ceramic transducer or magnetostrictive transducer.When described piezoelectric signal transmitter unit 15 receives this after the signal of telecommunication of high frequency modulated, via described transducer 25, the described signal of telecommunication through high frequency modulated can be carried out power conversion, thus generate the sound wave pulse signal corresponding with the signal of telecommunication of this high frequency modulated.This sound wave pulse signal, by after fluid transport to the second oil pipe body 22 in the second separate cavities 19, just can be transmitted downwards by described second oil pipe body 22, until arrive at described first oil pipe body 21.
In the seating nipple 7 of described down-hole R-T unit, transducer, signal demodulation unit, digital signal processing module, sensor, Central Control Module and power supply can be integrated with.When described down-hole R-T unit from the first oil pipe body 21 receive that ground R-T unit sends include the sound wave pulse signal of control instruction time, by transducer, described sound wave pulse signal can be converted to the signal of telecommunication, thus digital signal processing module can be utilized to extract baseband signal in this signal of telecommunication, then this baseband signal can be decoded, thus the control instruction that ground R-T unit sends can be got.This control instruction can be sent to described Central Control Module, to adjust each monitored data collecting unit in the R-T unit of down-hole.
In addition, after down-hole R-T unit collects monitored data by sensor, the analogue data collected can be converted to numerical data.Then the numerical data after conversion can be loaded in sound wave carriers, thus sound wave pulse signal can be converted electrical signals to.Sound wave pulse signal after conversion just can be coupled on the first oil pipe body 21 by anchor tip 6, thus can by tubing transmission on the second oil pipe body 22 on ground.
Above-mentioned can be divided into intensity modulated and phase-modulation two kinds to the method that the signal of telecommunication carries out optical modulation.Wherein, the principle of intensity modulated is: the light that light source sends is incided by multimode fibre by coupler again and is coated with on the elasticity of plastics diaphragm of metal, and through reflection, light comes back in multimode fibre again, is finally received by photo-detector.Described elasticity of plastics diaphragm can with the liquid comes into contact in the first signal separate cavities or secondary signal separate cavities, and the sound wave pulse signal of coiled tubing body can reach this flexible sheet by liquid, and makes flexible sheet produce vibration.Therefore, the light intensity of reverberation can be subject to the modulation of this sound wave pulse signal.The feature of the method is: system architecture is simple, and overall cost is low, fast response time, can significantly improve the performance of system; Shortcoming is that interference free performance is poor.
The principle of phase-modulation is: light sends from light source, and through coupler, the two-way light separated enters the Sagnac interference structure of ring-type, and one arm wherein has delay winding, and another arm has induction coil, is used for receiving the sound wave pulse signal of oil pipe tube surfaces.The time that the light that delay winding makes both direction propagate arrives induction coil is different, thus the light of both direction is different at the instantaneous sound intensity at induction coil place, defines different phase differences, thus the phase place of sound wave pulse signal to light pulse can be utilized to modulate.The method system architecture is complicated, high expensive, but highly sensitive, and responsive bandwidth is wider, and anti-interference is good, is more suitable for carrying out data transmission under strong noise background condition.
Above-mentioned intensity modulated and the method for phase-modulation all can be applied in the embodiment of the present application, can carry out choice for use according to actual needs particularly.
It should be noted that, the reason that described ground R-T unit is arranged on the second oil pipe body between hydraulic pressure injection head and well-control blowout prevention device is: the stressing conditions of the second oil pipe body between hydraulic pressure injection head and well-control blowout prevention device is fairly simple, outer year comparatively even, smaller on the transmission impact of sound wave pulse signal.And for oil pipe body more than hydraulic pressure injection head, its stressing conditions is comparatively complicated, very large on the transmission impact of sound wave pulse signal.
Therefore, by the Collaboration of down-hole R-T unit and ground R-T unit, just can realize uploading of issuing of control instruction and monitored data by the body of coiled tubing, thus the intercommunication of underground monitoring data and ground control instruction can be ensured.
In practical application scene, because the frequency of the monitored data of down-hole R-T unit collection and the wave field of carrier wave all can change, and these changes just can have an impact to the signal strength signal intensity that ground receiving wastewater facility receives.In this case, in the application one preferred embodiment, shift adjusting machine can be added in described telemetry system.As shown in Figure 3, described shift adjusting machine comprises pitch wheel 12 and tooth bar 20 and for driving described gear 12 to carry out the stepper motor (not shown) rotated, described tooth bar 20 runs through described matrix 13 and described matrix 13 can be driven to move up and down along the direction being parallel to described second oil pipe body 22.Like this, by described shift adjusting machine, the position of described matrix 13 can be produced fine setting.When matrix 13 moves, also can move for the unit received and launch sound wave pulse signal thereupon, so just, can according to actual conditions, matrix 13 is adjusted to the strongest position of Received signal strength, thus can ensures that sound wave pulse signal receives normally and emission process in distortionless situation.
In addition, in the process that controlled by sound and light unit 14 and piezoelectric signal transmitter unit 15 work, its position may be moved relative to the second oil pipe body 22.Now, fibre-optical probe 24 or transducer 25 may be caused to collide the situation of the second oil pipe body 22.Therefore, in another preferred embodiment of the application, described telemetry system can also comprise position-limit mechanism, and described position-limit mechanism comprises rigid limit bar 17 and is connected to the pulley 23 at described rigid limit bar 17 two ends.Described rigid limit bar 17 is connected with described controlled by sound and light unit 14 and described signal madulation unit 15 respectively, and described pulley 23 is close on described second oil pipe body.Like this, described fibre-optical probe 24 and transducer 25 just can keep certain safe distance with the second oil pipe body 22, prevent from being damaged in the course of the work.Described pulley 23 can reduce the frictional force with the second oil pipe body 22, thus facilitates matrix 13 to move up and down.
Because coiled tubing may produce rocking to a certain degree at work; in order to protect controlled by sound and light unit 14 in described telemetry system and piezoelectric signal transmitter unit 15, elastic mechanism 26 can be provided with between described controlled by sound and light unit 14 and the inwall of described matrix 13 and between described piezoelectric signal transmitter unit 15 and the inwall of described matrix 13.Such as, this elastic mechanism 26 can be spring or other elastic fluids.
Second oil pipe body 22, fibre-optical probe 24 and transducer 25 and external environment are kept apart by described first signal separate cavities 18 and secondary signal separate cavities 19, play the effect of good sound insulation and shock insulation.Described first signal separate cavities 18 and secondary signal separate cavities 19 inside are full of the liquid for transmitting acoustic signals, and this liquid is the transmission medium that acoustic signals is good.In order to ensure the normal transmission of acoustic signals, in the application one preferred embodiment, can all offer fluid infusion interface 16 on the sidewall of described first signal separate cavities 18 and described secondary signal separate cavities 19.The effect of described fluid infusion interface 16 is constantly liquid make-up in the first signal separate cavities 18 and secondary signal separate cavities 19, to ensure that the first signal separate cavities 18 and secondary signal separate cavities 19 are full of completely by liquid, thus the normal conduction of acoustic signals in cavity can be ensured.
In addition, in order to avoid down-hole R-T unit is subject to the interference of other signals when carrying out monitored data and gathering, the below of described down-hole R-T unit can be provided with signal isolator (not shown), the sound wave pulse signal that down-hole R-T unit can be propagated downwards by this signal isolator upwards reflects, and the noise signal that other noise source of the first oil pipe column bottom produces is reflected downwards, thus the sound wave pulse signal that upwards transmits can be strengthened and can prevent noise signal from causing interference to normal data communication.
The telemetry system that the embodiment of the present application provides, before test jobs starts, often needs through underground communica tion channel simulation testing and earth background noise samples and simulation test.The flow chart of the underground communica tion channel simulation testing that Fig. 4 provides for the embodiment of the present application.As shown in Figure 4, use artificial data source to replace sensor in underground tool string, and go into the well with tool string.After arriving the depth bounds of operation, down-hole R-T unit and ground R-T unit are started working, and first set ID position and initial frequency range (as 100-200Hz).The test dynamic data of the information simulation down-hole that artificial data source generates, is modulated into the sound wave pulse burst of specifying, upwards propagates along coiled tubing body.Ground R-T unit processes it after receiving the burst of some cycles, contrast with the signal after collection and explanation and artificial data source, by error analysis and corresponding algorithm, overall merit is carried out, as the important evidence of adjustment System running parameter to channel characteristics such as current oil well casing channel, pit shaft ambient condition, evanescent modes.Then adjust transmission band (if setting growth step-length is 100Hz), repeat aforesaid testing process, until all the channel estimation work of frequency range completes.Then injection head starts, and the adjustment tubing string degree of depth, to new position, repeats aforesaid testing process, again until complete the channel estimation work of whole depth location.
The earth background noise samples that Fig. 5 provides for the embodiment of the present application and simulation test flow chart.As shown in Figure 5, when testing, only opening ground R-T unit, entering any instrument and instrument under not in well, utilize optical fibre vibration sensor array acquisition noise information.The all engineering equipments in ground are opened by the actual test technology flow process of Oil/gas Well, comprise high pressure pumping-in equipment, hydraulic-driven injection head, various vehicles etc.System has a set of testing scheme pre-established, comprise sampling period, ambient temperature pressure etc., the extraction of respective background noise information is completed in some cycles, system is according to certain Algorithm Analysis and determine the sound field characteristics of operation field, for data communication during continuous-tube official testing operation and down-hole dynamic monitoring provide important guarantee.
Therefore a kind of telemetry system for Oil/gas Well that the embodiment of the present application provides, by arranging down-hole R-T unit and ground R-T unit, thus can ensure the intercommunication of underground monitoring data and ground control instruction.In addition, the embodiment of the present application is using the transmission medium of oil pipe body as sound wave pulse signal, thus go for oil-gas Layer test and the underground work technique of coiled tubing, can better for the special well type such as producing well of slim hole well, sidetracked hole, marginal field provides service.
The embodiment of the present application also provides a kind of method of telemetering for Oil/gas Well.A kind of method of telemetering flow chart for Oil/gas Well that Fig. 6 provides for the embodiment of the present application.As shown in Figure 6, described method can comprise:
S1: the monitored data under the R-T unit production wells of down-hole, and the monitored data of collection is converted to sound wave pulse signal;
S2: described sound wave pulse signal is sent to ground R-T unit by oil pipe body by described down-hole R-T unit;
S3: described sound wave pulse signal is converted to the signal of telecommunication by described ground R-T unit, and extracts described monitored data from the described signal of telecommunication.
In the application one preferred embodiment, after extract described monitored data from the signal of telecommunication, described method also comprises:
S4: described ground R-T unit generates the signal of telecommunication comprising control instruction, and the described signal of telecommunication comprising control instruction is converted to sound wave pulse control signal;
S5: described sound wave pulse control signal is sent to described down-hole R-T unit by oil pipe body by described ground R-T unit;
S6: described sound wave pulse control signal is converted to the signal of telecommunication by described down-hole R-T unit, and described control instruction is extracted from the signal of telecommunication after conversion.
It should be noted that, the ground R-T unit in each step above-mentioned is all consistent with the description in above-mentioned telemetry system with the specific implementation process of down-hole R-T unit, just repeats no more here.
Therefore a kind of method of telemetering for Oil/gas Well that the embodiment of the present application provides, by arranging down-hole R-T unit and ground R-T unit, thus can ensure the intercommunication of underground monitoring data and ground control instruction.In addition, the embodiment of the present application is using the transmission medium of oil pipe body as sound wave pulse signal, thus go for oil-gas Layer test and the underground work technique of coiled tubing, can better for the special well type such as producing well of slim hole well, sidetracked hole, marginal field provides service.
In this manual, such as first and second such adjectives only may be used for an element or action and another element or action to distinguish, and without requiring or imply this relation or the order of any reality.When environment allows, should not be construed as one that is confined in only element, parts or step with reference to element or parts or step (s), and can be one or more etc. in element, parts or step.
With the object described, those skilled in the art are supplied to the description of the various embodiments of the application above.It is not intended to is exhaustive or is not intended to the present invention to be limited to single disclosed embodiment.As mentioned above, the various alternative and change of the application will be apparent for above-mentioned technology one of ordinary skill in the art.Therefore, although specifically discuss the embodiment of some alternatives, other embodiment will be apparent, or those skilled in the art relatively easily draw.The application is intended to be included in that of the present invention all that this had discussed substitute, amendment and change, and drops on other embodiment in the spirit and scope of above-mentioned application.
Each embodiment in this manual all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiments.Especially, for system embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
Although depict the application by embodiment, those of ordinary skill in the art know, the application has many distortion and change and do not depart from the spirit of the application, and the claim appended by wishing comprises these distortion and change and do not depart from the spirit of the application.
Claims (10)
1. the telemetry system for Oil/gas Well, comprise down-hole R-T unit and ground R-T unit, it is characterized in that, described down-hole R-T unit comprises seating nipple and anchor tip, described seating nipple is fixedly connected with oil pipe body by described anchor tip, described ground R-T unit is fixed on the oil pipe body between hydraulic pressure injection head and well-control blowout prevention device, described ground R-T unit comprises matrix, first signal separate cavities, secondary signal separate cavities, controlled by sound and light unit, Optical Demodulation unit, piezoelectric signal transmitter unit and signal madulation unit, one end of described controlled by sound and light unit is embedded in described matrix, the other end is connected with described first signal separate cavities, one end of described piezoelectric signal transmitter unit is embedded in described matrix, the other end is connected with described secondary signal separate cavities, described oil pipe body runs through described first signal separate cavities and described secondary signal separate cavities, the liquid for transmitting sound wave is all filled with in described first signal separate cavities and described secondary signal separate cavities, described Optical Demodulation unit to be fixed on described matrix and to be connected with described controlled by sound and light unit, described signal madulation unit to be fixed on described matrix and to be connected with described piezoelectric signal transmitter unit.
2. the telemetry system for Oil/gas Well according to claim 1, is characterized in that, described controlled by sound and light unit comprises the laser for generation of preset wavelength and the fibre-optical probe be modulated to by acoustic signals on the laser of described preset wavelength.
3. the telemetry system for Oil/gas Well according to claim 1, is characterized in that, described piezoelectric signal transmitter unit comprises the transducer for converting electrical signals to acoustic signals.
4. the telemetry system for Oil/gas Well according to claim 1, it is characterized in that, described telemetry system also comprises shift adjusting machine, described shift adjusting machine comprises pitch wheel and tooth bar and for driving described gear to carry out the stepper motor rotated, described tooth bar runs through described matrix and described matrix can be driven to move up and down along the direction being parallel to described oil pipe body.
5. the telemetry system for Oil/gas Well according to claim 1, it is characterized in that, described telemetry system also comprises position-limit mechanism, described position-limit mechanism comprises rigid limit bar and is connected to the pulley at described rigid limit bar two ends, described rigid limit bar is connected with described controlled by sound and light unit and described signal madulation unit respectively, and described pulley is close on described oil pipe body.
6. the telemetry system for Oil/gas Well according to claim 1, is characterized in that, is provided with elastic mechanism between described controlled by sound and light unit and the inwall of described matrix and between described piezoelectric signal transmitter unit and the inwall of described matrix.
7. the telemetry system for Oil/gas Well according to claim 1, is characterized in that, the sidewall of described first signal separate cavities and described secondary signal separate cavities all offers fluid infusion interface.
8. the telemetry system for Oil/gas Well according to claim 1, is characterized in that, the below of described down-hole R-T unit is provided with signal isolator.
9. for a method of telemetering for Oil/gas Well, it is characterized in that, comprising:
Monitored data under the R-T unit production wells of down-hole, and the monitored data of collection is converted to sound wave pulse signal;
Described sound wave pulse signal is sent to ground R-T unit by oil pipe body by described down-hole R-T unit;
Described sound wave pulse signal is converted to the signal of telecommunication by described ground R-T unit, and extracts described monitored data from the described signal of telecommunication.
10. the method for telemetering for Oil/gas Well according to claim 9, is characterized in that, after extract described monitored data from the signal after opto-electronic conversion, described method also comprises:
Described ground R-T unit generates the signal of telecommunication comprising control instruction, and the described signal of telecommunication comprising control instruction is converted to sound wave pulse control signal;
Described sound wave pulse control signal is sent to described down-hole R-T unit by oil pipe body by described ground R-T unit;
Described sound wave pulse control signal is converted to the signal of telecommunication by described down-hole R-T unit, and extracts described control instruction from the signal of telecommunication after conversion.
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