CN104302871A - Method and apparatus for monitoring downhole tools - Google Patents

Abstract

A telemetry system and method configured to communicate wellbore parameters such as fluid composition, temperature and pressure is disclosed. In one embodiment, a plurality of tracers are stored downhole, and each tracer characterizes a different value of a wellbore parameter. After measuring the wellbore parameter, the measurement is associated with one or more of the plurality of tracers that are equivalent to the measurement of the downhole parameter. One or more tracers characterizing the measurement values are then released from their respective containers to travel upstream. The upstream located sensor may detect one or more tracers and then correlate the detected one or more tracers back to obtain a measurement of the wellbore parameter. In another embodiment, ratiometric amounts of tracers may be used to characterize additional values of wellbore parameters.

Description

For monitoring the method and apparatus of downhole tool

The cross reference of related application

This application claims the rights and interests of following patent application: the U.S. Provisional Patent Application the 61/624th that on April 16th, 2012 submits to, No. 850; The U.S. Provisional Patent Application the 61/650th that on May 22nd, 2012 submits to, No. 421; The U.S. Provisional Patent Application the 61/798th that on March 15th, 2013 submits to, No. 767; And the U.S. Provisional Patent Application the 61/800th that on March 15th, 2013 submits to, No. 614, these applications are all merged into herein by reference.

Technical field

Embodiments of the invention relate generally to the telemetry system for sending the information from downhole tool.Particularly, embodiments of the invention relate to the chemical telemetry system for sending the information from downhole tool.

Background technology

The reliable understanding to hiding-place feature is depended in best oil exploitation from hiding-place (reservoir).Conventional method for hiding-place monitoring comprises well-shooting explanation, the test of well pressure, produces fluid analysis and production history coupling.Due to the complexity of hiding-place, in order to be familiar with the dynamic the best about hiding-place to operator, all available information is all valuable.

In the industry, optical fiber or cable are used together with sensor, with information information being sent to downhole tool and send from downhole tool.But a shortcoming of cable is that its needs are directly connected with downhole tool.This directly connects the cost adding operation.

Therefore, need a kind ofly to transmit about the telemetry system of the information of well from downhole tool.

Summary of the invention

In one embodiment, a kind of sending comprises from the method for the bore parameters of downhole tool: the multiple tracers (tracer) being provided for the value characterizing bore parameters; Sensor is used to measure bore parameters; Bore parameters is associated with the value characterized by one or more tracer in multiple tracer; Discharge one or more tracer in multiple tracer upstream to advance; Detect the appearance of one or more tracer in multiple tracer; And determine bore parameters according to one or more tracer in detected multiple tracers.

In another embodiment, a kind ofly to comprise from the system of the bore parameters of downhole tool for sending: multiple tracer, for characterizing the value of bore parameters; Multiple container, for storing multiple tracer; First sensor, for measuring bore parameters; Downhole controller, is configured to bore parameters to associate with one or more tracer in multiple tracer and is configured to one or more tracer of discharging in multiple tracer; Second sensor, for detecting the appearance of one or more tracer in multiple tracer; And well head (uphole) controller, be configured to determine bore parameters according to one or more tracer in detected multiple tracers.

In one or more embodiment disclosed herein, each tracer in multiple tracer characterizes the different value of bore parameters.

In one or more embodiment disclosed herein, each tracer in multiple tracer comprises chemical agent.

In another embodiment, a kind of sending comprises from the method for the bore parameters of downhole tool: the multiple tracers being provided for the value characterizing bore parameters; Sensor is used to measure bore parameters; The value that bore parameters and the ratio scale by one or more tracer in multiple tracer are levied is associated; Discharge the ratio amount (ratiometric amount) of one or more tracer in multiple tracer upstream to advance; Detect the appearance of the ratio amount of one or more tracer in multiple tracer; And determine bore parameters according to the ratio amount of one or more tracer in detected multiple tracers.

In one or more embodiment disclosed herein, the method also comprises: the calibration dosage discharging multiple tracer.

In another embodiment, a kind of method of monitoring the state of downhole tool comprises: the multiple tracers being provided for the state characterizing downhole tool; Change the state of downhole tool; And release characterizes the tracer of the state of the downhole tool after changing.In another embodiment, the state changing downhole tool comprises the parts of mobile downhole tool.In another embodiment, the movement in response to parts discharges tracer.

In another embodiment, a kind of method of monitoring downhole tool comprises: be stored in by multiple tracer in multiple chamber (chamber), and wherein, the tracer in each chamber in multiple chamber characterizes the diverse location of the parts of downhole tool; Moving-member is to change the position of parts; Be moved along with parts and sequentially open multiple chamber, thus from opened chamber release tracer; Detect d/d tracer; And the position of determining means.In another embodiment, multiple chamber is closed by parts.In another embodiment, multiple chamber is closed by the corresponding cap seal being couple to parts.

Accompanying drawing explanation

Therefore, can obtain can understanding the mode of above-mentioned feature of the present invention, the more detailed description of the present invention to above-mentioned brief overview in detail, section Example shown in the drawings by referring to embodiment.But, it should be noted that because the present invention can allow the embodiment of other effects equivalent, so accompanying drawing only illustrates exemplary embodiments of the present invention, therefore do not think the restriction to scope of the present invention.

Fig. 1 shows the exemplary embodiment of telemetry system.

Fig. 2 is the form of example values of the tracer B1 illustrated in the first area of the telemetry system of Fig. 1, tracer B2, tracer B3.

Fig. 3 shows the exemplary embodiment of the telemetry system used together with multilateral wellbore.

Fig. 4 shows the exemplary embodiment of the telemetry system used in fracturing operation.Fig. 4 A shows the exemplary embodiment of container.

Fig. 5 shows the exemplary embodiment of the telemetry system used together with subsurface valve.

Fig. 6 shows the exemplary embodiment of the telemetry system used together with down-hole pump.

Fig. 7 shows the exemplary embodiment of the telemetry system used together with steam assisted gravity drainage system.

Fig. 8 A to Fig. 8 B shows another embodiment of the chemical communication system for monitoring downhole tool.

Fig. 9 shows the partial view of another embodiment of valve.

Figure 10 shows with the exemplary graph of the measured value of the tracer of ratio amount release.

Figure 11 shows the exemplary graph of the measured value of a tracer according to time release.

Figure 12 shows the exemplary graph of the measured value of the tracer discharged according to time and concentration.

Detailed description of the invention

Embodiments of the invention relate to telemetry system for transmitting bore parameters (such as fluid composition, temperature and pressure) and method.In one embodiment, multiple tracer is stored in down-hole, and each tracer characterizes the different value of bore parameters.After measurement bore parameters, measured value is associated with one or more tracer equivalent with the measured value of downhole parameters in multiple tracer.Then, one or more tracer characterizing measured value is discharged from its cell therefor upstream to advance.The sensor being positioned at upstream can detect one or more tracer, then, the association of this one or more tracer is returned to obtain the measured value of bore parameters.

In one embodiment, code can be used pass on the information about bore parameters (such as fluid composition, temperature and pressure).Code can comprise multiple code element.Each code element all can characterize the different value of bore parameters.The value characterized can be the scope of single value or value.Code can be presented by multiple tracer, and wherein each code element is characterized by the combination of tracer or different tracer.In one embodiment, each tracer in multiple tracer starts to be stored in its cell therefor.

In operation, after the measured value obtaining bore parameters, then measured value is attributed to the code element CE1 in code.Then, the sign tracer of this code element or the combination of tracer are discharged from its container.Such as, if multiple tracer comprises Z1, Z2 and Z3, and this code element is characterized by tracer Z1, then discharged from its container by tracer Z1, and tracer Z1 can be advanced to well head.The sensor being positioned at well head can detect the appearance of tracer Z1, and determines the particular value of bore parameters or the scope of value owing to detecting tracer Z1.In another example, measured value can be attributed to the different code Elements C E2 that can be characterized by the combination of Z2 and Z3.In this example, from tracer Z2 and tracer Z3 separately container release tracer Z2 and tracer Z3.When Well mouth sensor detects the appearance of two tracers, the occurrence of bore parameters or the scope of value can be determined.In another embodiment, the combination of tracer can side by side or sequentially be discharged.Such as, tracer Z2 and tracer Z3 can be discharged simultaneously or sequentially.

In this, the quantity characterizing the code element in the number ratio code of the tracer needed for one group of code element is few.In present exemplary, three tracers can be used to characterize one group seven different code elements.In another example, two tracers can be used to characterize one group of three code element.Another advantage of this system is not use the concentration of the tracer be discharged in well to transmit measured value.Alternatively, measured value is transmitted by the tracer of release or the combination of different tracer.Therefore, in certain embodiments, the tracer discharging the minimum needed for detecting only is needed.This advantage makes it possible to carry out dispensing containers for known release number of times.Can expect, use the communication of code to can be applicable to each embodiment described herein.

In one embodiment, multiple tracer may be used for transmitting the information about bore parameters (such as fluid composition, temperature and pressure).Each tracer in tracer Z1, Z2, Z3 can characterize the different value of bore parameters.This value can be particular value or scope.Multiple tracer can be combined, to characterize the value except the value of single tracer.In one embodiment, each tracer in multiple tracer starts to be stored in its cell therefor.In operation, after the measured value obtaining bore parameters, then measured value is associated with the equivalent value characterized by one or more tracer.Such as, if the value characterized by tracer Z1 is equal to measured value, then discharges tracer Z1 from the container of tracer Z1 and tracer Z1 can be advanced to well head.The sensor being positioned at well head can detect the appearance of tracer Z1, and determines that the value of bore parameters is in the value characterized by tracer Z1.In another example, measured value can be characterized by the combination of tracer.In this example, the total value that measured value can be characterized by tracer Z2 and tracer Z3 characterizes.In this, by from tracer Z2 and tracer Z3 separately container release tracer Z2 and tracer Z3.When Well mouth sensor detects the appearance of two tracers, determine that measured value is in the scope that the combined value by tracer Z1 and tracer Z2 characterizes.In this, the quantity characterizing the value in this group of number ratio of the tracer needed for a class value is few.In present exemplary, three tracers can be used to characterize one group seven different values.In another example, two tracers can be used to characterize one group three different values.Another advantage of this system is, measured value does not associate with the concentration of the tracer be discharged in well.Alternatively, measured value is associated from the tracer of release or the combination of different tracer.Therefore, in certain embodiments, only need to discharge the minimum needed for detecting.This advantage makes it possible to carry out dispensing containers for known release number of times.

In one embodiment, tracer can be chemical agent, and this chemical agent can be advanced in the wellbore when not consuming, and therefore detected in another location.In another embodiment, tracer can be the chemical agent found to non-natural in the wellbore.The chemical agent be applicable to can comprise radio isotope or non radioactive isotope.The non radioactive tracer be applicable to comprises the acid of naphthalene sulfonate, naphthyiamine sultonate, fluorescein and fluorobenzene.The 3H that can also apply the composition of one species marks tracer or 14C mark tracer.The radioactive tracer of such as beta emitter can also be used.Exemplary tracer comprises the chemical agent that spectral device or calutron (such as radiation measurement assembly, magnetic devices or Optical devices) can be used to detect.In addition, the granularity Detection using the tracer of such as silicon or other nano particles is also considered.Other Exemplary chemical agent comprise fluobenzoic acid (fluorobenzoate), chlorobenzoic acid (chlorobenzoate), methyl fluoride benzoic ether (fluoromethylbenzoate), perfluorinated aliphatic acid (perfluoroliphatic acids) etc.According to the natural chemical property of well and the type of chemical agent introduced for stimulation, reparation, pressure break etc., can be different to the selection of the chemical agent for tracer.

Fig. 1 shows the exemplary embodiment of telemetry system 100.Telemetry system 100 is arranged in the well 20 for generation of hydrocarbon.Well 20 comprises the multiple packers 21,22,23 being placed with and isolating multiple Production Regional 31,32.Telemetry system 100 comprises the first downhole sensor 41, and this first downhole sensor 41 is configured to measure the bore parameters be associated with first area 31.Such as, the first downhole sensor 41 can be configured to the water yield measured in the fluid of first area 31 place generation, and it can also be called as " moisture content (water cut) ".Multiple container 51,52,53 can be used for storing tracer B1, B2, B3 respectively.In one embodiment, container 51,52,53 can be pressurized and can be operated by downhole controller 61.Controller 61 is also connected to the first downhole sensor 41, and can receive the signal relevant with the measured value of bore parameters of sensor 41.Controller 61 is configured to measured value to associate with sign tracer B1, B2, B3 of measured value or the combination of tracer.System 100 also comprises detection system 80, and this detection system 80 is configured to tracer B1, B2, B3 of detecting release, and is configured to measured value or the scope of determining bore parameters based on detected tracer B1, B2, B3.In one embodiment, detection system 80 can comprise tracer sensor for detecting tracer and the controller for being associated with the value of bore parameters by detected tracer.In another embodiment, tracer sensor can be the single tracer sensor being suitable for detecting each sensor, or each is all suitable for the multiple sensors detecting different tracer.In another embodiment, measured value can be attributed to the code element in code, and each code element be distributed to the tracer in the combination of tracer.

Fig. 2 is the form of the example values of tracer B1, B2, the B3 illustrated in the container 51,52,53 of telemetry system 100.In this example, tracer characterizes moisture content scope.As shown, tracer B1, B2, B3 characterizes moisture content scope 1,2,4 respectively.Each value in the value of scope 3,5 and 6 is characterized by the combination release of two tracers.The value of scope 7 is characterized by the combination release of whole three tracers.Therefore, if whole three tracers detected, then can determine that moisture content scope is between 0.875 and 1.0.Must be noted that the value in Fig. 2 is only example.Tracer can be endowed the scope of any suitable value, to transmit the downhole parameters of measurement.Such as, tracer B1, tracer B2, tracer B3 can be used to be characterized in total moisture content scope between 0.25 to 0.75.In addition, although Fig. 2 shows the value (that is, 0.125) that tracer has equal unit, can expect, it is not the value of equal unit that tracer is endowed, and such as, B2 can characterize the scope of 0.25 instead of the scope of 0.125.

Refer again to Fig. 1, system 100 can comprise another group tracer C1, C2, C3 for transmitting about the information (moisture content in such as region 32) of the second Production Regional 32 alternatively.Tracer C1, C2, C3 can be stored in container 61,62,63 respectively.Tracer C1, C2, C3 of second area 32 should be different from tracer B1, B2, B3 of first area 31, to contribute to identifying the region sending tracer.Second sensor 42 is for measuring the bore parameters of second area 2.Controller 61 or second controller can control the second sensor 42 and container 61, container 62, container 63.

In one embodiment, controller 61 can be configured to send information about moisture content or other bore parameters with predetermined period of time.Such as, controller 61 can be configured to every day, weekly, monthly, quarterly or any reasonable time scope release tracer.Controller 61 can be configured to discharge the tracer scale being enough to be detected by detection system 80.Carry out read sensor owing to only needing low, open and close container and operation internal clocking, so improve the battery life of system.Therefore, telemetry system 100 can be the low power system that the life-span is long or iterations is many or both have concurrently.

In operation, telemetry system 100 can be used to transmit the bore parameters of the moisture content of such as wellbore fluid.In one embodiment, controller 61 can be configured to transmit moisture content every day.For this reason, controller 61 can obtain the value of moisture content from first sensor 41.Then, measured value can associate with the tracer characterizing measured value by controller 61.In one example, if measured value is 0.35, then controller 61 can determine that measured value is in the scope characterized by tracer B2, then discharges tracer B2 from the container 52 of tracer B2.Tracer B2 marches to surface to well head, and is detected by detection system 80.The detection of tracer B2 transmits to detection system 80: the moisture content in first area is between 0.25 and 0.375.After one day, controller 61 can receive another measured value of moisture content from first sensor 41.In another example, if the measured value of moisture content increases to 0.4, then it can associate with the value that the combination of tracer B2 characterizes with by tracer B1 by controller 61.Therefore, controller 61 discharges tracer B1 and tracer B2 by from the respective container 51 of tracer B1 and tracer B2 and container 52.The detection of tracer B1 and tracer B2 transmits to detection system 80: the moisture content in first area is between 0.375 and 0.5.In one embodiment, tracer B1 and tracer B2 can be discharged with unique pattern.Such as, tracer B1 and tracer B2 can sequentially or be side by side discharged.In another embodiment, controller 61 can also by obtaining measured value from the second sensor 42 and equivalent tracer C1, C2, C3 of discharging second area 32 transmit the moisture content of second area 32.The tracer selected for second area 32 is different from the tracer of first area 31, to contribute to distinguishable region 31,32.Also the tracer of second area 32 can be discharged every day.In one embodiment, different from first area 31 in the one day time discharges the tracer of second area 32.Such as, after first area 31, the tracer of second area 32 within 12 hours, can be discharged.Tracer C1, C2, C3 can be endowed the water cut value identical with tracer B1, B2, the B3 from first area.Detection system 80 can be configured to detect tracer C1, C2, C3, and according to tracer determination water cut value.In another embodiment, telemetry system 100 can comprise one or more groups sensor and the tracer of other bore parameters for measuring such as temperature and pressure.In one example, the tracer for passing on temperature can be discharged weekly, and the tracer for passing on pressure can be discharged every day.

Although Fig. 1 shows single borehole systems, in another embodiment, telemetry system can be used in multilateral wellbore system.Each limit can comprise one or more tracer and sensor, to transmit with the operation of the regional on each limit or to produce relevant information.As shown in Figure 3, each limit 110,120,130 all can be included in two sensors and the tracer at each inflow control device place.First limit 110 can comprise two inflow control devices 111,112 for two different Production Regional.Exemplary inflow control device can be slide cartridge valve (sliding sleeve valve).Each inflow control device 111,112 can be equipped with to measure the sensor of bore parameters and one group of tracer for transmitting measured value with the similar fashion shown in Fig. 1.Such as, the first inflow control device 111 can be associated with downhole sensor 41 and tracer B1, B2, B3, and the second inflow control device 112 can be associated with downhole sensor 42 and tracer C1, C2, C3.Each sensor in sensor 41, sensor 42 can be suitable for the bore parameters measuring such as flow velocity, fluid composition, temperature and pressure.In one embodiment, each inflow control device can be provided with the additional sensor measuring additional parameter.Such as, the one or more inflow control devices in inflow control device can be equipped with the first sensor for measuring fluid composition and the second sensor for measuring tempeature.Second Edge 120 also can comprise two inflow control devices 121,122, and each all has himself sensor and one group of tracer.Similarly, the 3rd limit 130 can comprise two inflow control devices 131,132, and each all has himself sensor and one group of tracer.The specific inflow control device that the uniqueness of each tracer contributes to being associated with tracer identifies.In this, the information relevant with specific inflow control device can be sent to surface by tracer.Such as, tracer B1, B2, B3 can transmit the flow velocity of the fluid of the first inflow control device 111 flow through in the first limit 110.Except transmitting measured flow velocity, tracer B1, B2, B3 also indicate inflow control device 111 in operation.In another example, the failure detected from the tracer of inflow control device 132 can indicate inflow control device 132 close or encounter problems.Must be noted that each limit can comprise the inflow control device more than two, the inflow control device of such as five, ten, 15 or any right quantity.In another embodiment, measured value can be attributed to the code element in code, and each code element be distributed to the tracer in the combination of tracer.

In another embodiment, telemetry system can be used in fracturing operation.Fig. 4 shows the well 140 with multiple pressure break sleeve (fracture sleeve) 141,142,143, and the plurality of pressure break sleeve 141,142,143 is sequentially opened to make fracturing fluid can flow out and fracturing stratum from well.Whether pressure break sleeve 141,142,143 is associated with one group of tracer, open during fracturing operation to transmit each pressure break sleeve.In certain operations, fracturing fluid is injected well continuously during fracturing operation.In such operation, postpone the release of chemical tracer, until fluid flow direction is towards well.In one exemplary embodiment, as shown in Figure 4 A, each tracer be associated with the second pressure break sleeve 142 can be stored in be had in the container 150 of sluice valve 152 and flap valve 154.Sluice valve 152 is opened in response to opening of pressure break sleeve 142.Flap valve 154 is opened when annular pressure is greater than borehole pressure.Exemplary flap valve is the one way valve of such as flapper valve or lift valve.

In operation, when pressure break sleeve 142 is opened, controller responsively opens sluice valve 152.But, do not discharge tracer, until open flap valve 154.Although fracturing fluid is just injected into, flap valve 154 still cuts out, this is because the borehole pressure produced by fracturing fluid is larger than annular pressure.When injecting stopping and borehole pressure drops to below annular pressure, flap valve 154 opens to discharge tracer from container 150.Tracer is released in well, and is brought to surface.Show to open pressure break sleeve 142 during operation to tracer at Surface testing.But if the tracer for specific pressure break sleeve do not detected, then this shows that specific pressure break sleeve may fail to open.In another embodiment, measured value can be attributed to the code element in code, and each code element be distributed to the tracer in the combination of tracer.

In another embodiment, tracer can be used to indicate the open mode of sliding sleeve or other valve gears.Such as, can open, close or control valve between partial open position from surface.But, be usually difficult to the degree determining that valve portion is opened.In one embodiment, valve can comprise the sensor being configured to the opening degree measuring valve.Multiple container can be used to store tracer E1, E2, E3 respectively, to transmit the state of valve.In one embodiment, container can be pressurized and can be operated by downhole controller.This controller is also connected to sensor, and can receive the signal relevant with valve opening degree from sensor.This controller is configured to measured value to associate with sign tracer E1, E2, E3 of measured value or the combination of tracer.In one example, tracer E1, E2, E3 can be used characterize scope 1 to scope 7 as shown in Figure 1.System also comprises detection system, and this detection system is configured to tracer E1, E2, E3 of detecting release, and is configured to the state determining valve based on detected tracer E1, E2, E3.

In operation, can send signal to valve to open valve at least in part, such as 60% opens.The opening of sensor measurement valve, and data are sent to controller.Controller discharges again one or more tracer, so that valve opening degree is sent to surface.Such as, controller can be defined as 60% measured value opened in the scope characterized by tracer E3, therefore, from the container release tracer E3 of tracer E3.Tracer E3 upwards advances towards well, and is detected by detection system.To the detection of tracer E3 to detection system transmission: valve is 50% open to 62.5% and open.Afterwards, controller can another measured value of receiving valve, and such as 70% opens.Then, measured value can associate with the value that the combination of tracer E3 characterizes with by tracer E1 by controller.Therefore, controller from tracer E1 and tracer E3 separately container release tracer E1 and tracer E3.Show to open in the scope of valve between 62.5% and 75% to the detection of tracer E1 and tracer E3.In like fashion, tracer can be used as coding, to transmit the state of valve.Must be noted that the scope of tracer specifies the scope that can be different from Fig. 1.Also must be noted that and additional tracer can be used to limit the possible range characterized by tracer further.In another embodiment, measured value can be attributed to the code element in code, and each code element be distributed to the tracer in the combination of tracer.

In another embodiment, the release of tracer directly can be associated with the opening of sleeve of downhole valve.In one example, tracer can be stored in by the continuous cavity of one or more containers of sleeve closes.Each chamber can store the different tracer of open mode or the combination of tracer that characterize sleeve.Along with sleeve moves to open downhole valve, it sequentially can open one or more chamber in chamber.Tracer in the chamber opened by sleeve will be released to flowing stream, such as pipeline, ring between pipeline and sleeve pipe (casing), hydraulic tube and combination thereof.When tracer being detected, will at surface analysis tracer to determine valve position.In another embodiment, sleeve can be coupled to the lid of chamber.Along with sleeve moves, it also will make lid movement to open each chamber, thus release tracer.Although describe and relate to downhole valve, can expect using this system to indicate the location status of any applicable downhole tool.In another embodiment, chemical communication system can be used to transmit the position of the parts of downhole tool.

In a kind of exemplary operation, five chambers can be used to characterize with the increment of 20 percent position of sleeve.Fig. 8 A shows the partial view of the inside of the exemplary embodiment of downhole valve 400.Valve 400 comprises tubular body 410 and is adjacent to the sliding sleeve 420 of this tubular body 410 layout.Sleeve 420 can comprise extension lid 425, and the closed dotted line of this extension lid 425 shows five chamber 431-435 for hiding view.At the beginning, send signal to open valve 400 at least in part, such as 40% opens.Along with sleeve 400 is opened, it sequentially will open chamber 431,432.After reaching 40% open position, the first two chamber 431,432 will be opened.The tracer of sign 20% open position and 40% open position will be discharged.The appearance of the tracer that the detection system detection sign 40% in surface is opened or tracer combination, and confirm that sleeve 400 at least 40% is opened.If send secondary signal afterwards to open valve 400 further, such as, to 60%, then sleeve 420 will open next chamber 433, and by the tracer of release sign 60% open mode.When detection system detects the appearance of these tracers, confirm the correct open position of valve 400.Fig. 8 B shows the groove 428 that sliding sleeve 420 has moved up to expose in valve 400, thus carries out fluid transmission.In addition, also move up, so first three chamber 431-433 opens owing to extending lid 425.Shown in dotted line, the 4th chamber 434 and the 5th chamber 435 are still extended lid and block.

In another embodiment, the release of tracer can be controlled by order (such as receiving from surface or the order carrying out self-controller).Such as, open three chamber 431-433 opening sleeve after, the release of tracer can be postponed, until receive order.In one example, controller can indicate all chamber 431-435 all to discharge its tracer.But the tracer only in chamber 431-433 will be discharged in flowing stream, because these chambers are opened.Tracer in chamber 434-435 cannot be discharged in flowing stream, because these chambers are still blocked by sleeve 400.

Fig. 9 shows the partial view of another embodiment of valve 450.As shown, the extension lid 465 of sliding sleeve 460 is configured to four chambers in stop seven chamber 451-457.Particularly, extend lid 465 and block chamber 453-455, and chamber 451,452,456 and 457 is opened to make it possible to discharge tracer.In this, valve 450 is partly opened, as by the chamber 451 and 452 opened show.When receiving the order of release tracer, all chambers will discharge its tracer.But the tracer only from chamber 451,452,456,457 is opened, can flow in flowing stream (such as, pipe interior) to make tracer.Tracer in surface not from chamber 453-455 will show that these chambers are closed, therefore, can determine the position of sleeve.If receive the order of partly closure sleeve 460, then sleeve 460 will move, and to close the second chamber 452, and chamber 451 and chamber 455-457 be opened.In order to represent that with signal sleeve 460 is partly closed, another order can be sent to indicate the tracer in release chamber 451-457.As a result, the tracer only in chamber 451 and chamber 455-457 is released, and is detected in surface, and not from the tracer of chamber 452-454.Therefore, confirm that sleeve 460 part is closed.

In another embodiment, even if valve can be configured to its cut out also send chemical signal.Such as, referring back to Fig. 3, if the valve 112 in the first limit 110 is opened and upstream valve 111 is closed, then the fluid entering downstream valve 112 arrives in the way on surface at it and will stream upstream valve 111.Can by upstream valve 111 pre-programmed for release tracer be to show that upstream valve 111 is closed.The tracer discharged can be brought to surface by entering the fluid of downstream valve 112.In another embodiment, order upstream valve 111 tracer can be discharged, or with the time interval of presetting release tracer.

In another embodiment, telemetry system can be used to transmit the state of subsurface safety.Such as, subsurface safety 200 can be included in the biased baffle plate 210 of normal closed position.During operation, as shown in Figure 5, shiftable sleeve (shift sleeve) 215 can be used to open baffle plate 210, and baffle plate 210 is locked in open position.In one embodiment, tracer can be discharged from container 220, to show that baffle plate 210 is opened.Such as, axially mobile to open baffle plate 210 and after locked flapper 210, shiftable sleeve 215 can trigger the release of tracer at shiftable sleeve 215.Fig. 5 shows to be in and is locked and the baffle plate 210 of the position of opening.In one embodiment, shiftable sleeve 215 can engage with piston 225, discharges from its container 220 to make tracer.In like fashion, telemetry system can be used to be locked and the position of opening to confirm that baffle plate 210 is in.

In another embodiment, the telemetry system borehole condition that may be used for by transmitting contiguous down-hole pump is convenient to the control to down-hole pump.Fig. 6 shows the well 160 of the screw pump (" PCP ") had for wellbore fluid pump being extracted into surface.In one embodiment, PCP is the inserted PCP 170 of the production pipeline 165 be attached in well.PCP 170 can be inserted and comprise the rotor 171 being couple to stator 172 releasedly.Use again door bolt (latch) 167 that stator 172 is couple to pipeline 165 releasedly.Sucker rod 169 can be used to raise or reduce and can insert PCP.In one embodiment, the sensor 180 for measuring the hydrostatic head in well can be attached to PCP 170.PCP 170 can also comprise for separating of ground storage tracer F1, F2, F3 measured value to be sent to the container 185 on surface.Each tracer can characterize occurrence, and two or more tracers that can combine in tracer are to characterize different values.Tracer periodically can transmit the information about the hydrostatic head in well.Such as, controller can per hour, every day or discharge tracer weekly.After sensor measurement hydrostatic head, release is characterized one or more tracers of measured value by controller.If hydrostatic head is too high, then can increasing motor speed to produce more fluid.But, if hydrostatic head is too low, then can reduce electromotor velocity to guarantee that fluid column is on the entrance of PCP 170.In like fashion, PCP 170 can be operated to be controlled by fluid at the horizontal plane place of the entrance near PCP, thus improve the efficiency of pump.In another embodiment, sensor and tracer can be attached to rotor, and can extend to alternatively under stator.Can expect using additional sensor and tracer to measure and transmit other bore parameters of such as temperature and composition.In another embodiment, measured value can be attributed to the code element in code, and each code element be distributed to the tracer in the combination of tracer.

In another embodiment, telemetry system may be used for passing on the information relevant with steam assisted gravity drainage system (" SAGD ").Fig. 7 shows to have to be connected to and goes out to flow for first of the first tube (tubular) by steam injection stratum 305 the first well 310 that valve 311 and second goes out to flow valve 312.Steam and other formation fluids can enter the second well 320 and be sent to surface via first valve 321 and second valve 322 that becomes a mandarin that becomes a mandarin, and first valve 321 and second valve 322 that becomes a mandarin that becomes a mandarin is connected via the second tube.In one embodiment, can provide and be assigned to first and go out to flow the tracer of valve or the combination of tracer to leaving the first steam going out to flow valve 311.Similarly, the combination being assigned to tracer or tracer that second goes out to flow valve 312 can be added to and leave second and go out to flow in the steam of valve 312.Enter at steam and become a mandarin valve 321,322 and after being sent to well head, detecting sensor can identify tracer in steam and determine the source of tracer, namely goes out to flow valve 311 from first or goes out to flow valve 312 from second.In another embodiment, the valve 321 that becomes a mandarin, the valve 322 that becomes a mandarin can be provided with suitable sensor and tracer, to determine the flow velocity of the fluid in inflow second well 320, temperature, pressure and/or composition.

In another embodiment, chemical communication system can be configured to the ratio amount of release tracer to pass on the information about bore parameters or downhole tool.Such as, can (such as four/dose, a half-value dose or full dosage discharge each tracer with ratio amount.Often kind of ratio dosage can characterize different values.In this, the use of ratio dosage effectively increases scope or the resolution ratio of the value characterized by tracer.Must be noted that dosage is not limited to four/dose or a half-value dose, and can be any amount suitably, such as 1/3rd, 1/5th or 1/6th.In one embodiment, often kind of ratio dosage can characterize equal value.Such as, if only use a tracer, then each four/dose can characterization value 0.1, to make full dosage can characterization value 0.4.If use multiple tracer, then the ratio amount of a tracer can be combined with the ratio amount of other tracers one or more with characterization value.In another embodiment, each part ratio dosage can be characterized in the smaller value in the scope of the value characterized by full dosage, thus provides more high-resolution measured value.Such as, if full dosage is characterized in the scope between 0.2 to 0.3, then each four/dose can be 25% of this scope.

In order to determine the ambient influnence to tracer, system can discharge calibration dosage.Calibration dosage can be used to carry out the data of standadized ratio value.In this example, calibration dosage can be called Normalized dose.In one embodiment, Normalized dose can be the full dosage of tracer.Can be used in surface to determine after Normalized dose for the value of full dosage measurement or before the ratio dosage of tracer that discharges.Such as, if the measured value of ratio dosage is about 33% of the measured value of calibration dosage, then discharged ratio dosage is three/dose.After determining ratio dosage, characterized value can be obtained.Can (such as, before or after fractional release dosage) release standard agent amount at any time.Can based on the frequency of the time interval (such as per hour, every day or weekly) Co ntrolled release Normalized dose.Can also based on particular event (such as before measuring, when receiving the order being sent to down-hole or when value is the particular range expected more specifically in measurement) release standard agent amount.In another embodiment, the unique code characterized by tracer can be discharged, to represent with signal and Normalized dose will be sent.

Figure 10 illustrates the exemplary graph of measured value compared with the Normalized dose of tracer T1, T2, T3 with three tracers T1, T2, T3 of the release of ratio amount.For each tracer, release standard agent amount, then fractional release dosage.In this example, ratio amount release tracer T1, T2, T3 of 0.7,0.4 and 0.5 is thought respectively.

In another embodiment, can such as, according to time-modulation tracer, width modulated.Figure 11 shows the exemplary graph of the measured value of a tracer according to time release.Must be noted that and a tracer for the sake of clarity and is only shown.The tracer according to time-modulation any amount can be expected.In fig. 11, within the period of about ten minutes, discharge tracer as Normalized dose, within back to back five minutes, release tracer is as ratio dosage.In another embodiment, working concentration and the combination of time tracer can be modulated with characterization value.In fig. 12, with the dosage release tracer of 60% in 5 minutes, and then in 5 minutes, tracer is discharged with the dosage of 40%.In surface, this result can associate with predetermined value by detection system.

In one exemplary embodiment, the system shown in Fig. 1 can be revised, to make it possible to the ratio amount of such as a half-value dose and full dosage release tracer B1, B2, B3.In this embodiment, a half-value dose can represent 50% of the scope of full dosage, and this full dosage equals 0.0625.Therefore, a half-value dose can represent the scope between 0.25 to 0.3125, and full dosage can represent the scope between 0.3125 to 0.375.In operation, controller 61 is programmed, with release standard agent amount before measurement bore parameters.At surface standardized testing dosage, and use this Normalized dose to determine any ratio dosage.After obtaining the value of moisture content from first sensor 41, measured value then associates with the tracer characterizing measured value by controller 61.In one example, if measured value is 0.28, then controller 61 can determine that measured value is in the scope that the tracer B2 by a half-value dose characterizes.Therefore, the tracer B2 of a half-value dose is discharged from the container 52 of tracer B2.In one embodiment, open container 52, and use mechanical actuation means (such as piston, lever or screw rod) to discharge tracer.Tracer B2 marches to surface to well head and is detected by detection system 80.Then, the value of the value of detected tracer B2 with calibration dosage is compared.Result relatively shows the tracer B2 releasing a half-value dose, and this is sent to detection system 80: moisture content is in the first region between 0.25 and 0.3125.

In another embodiment, usage rate value can carry out further limited range, that is, obtain more high-resolution measured value.Such as, be the scope of 0.125 in each tracer phenogram 2 in tracer B1, B2, B3.Each tracer of a half-value dose and the combination of tracer can be used to be characterized in the value within the scope of this.Example use is below the scope of the B2 of 0.25 to 0.375, can distribute the value of tracer B1, B2, B3 of a half-value dose as follows:

Half B1=0.25 – 0.275

Half B2=0.275 – 0.3

Half B3=0.3 – 0.325

Half B1+ half B2=0.325 – 0.35

Half B1+ half B3=0.35 – 0.375

In operation, if water cut value is 0.33, then the tracer B2 of standard dose is discharged in well by controller 61.In surface, detection system will determine that moisture content scope is between 0.25 and 0.375, as represented by the detection of the tracer B2 to full dosage.After this, detection system can send in order to transmit the order be worth more specifically to controller 61.Responsively.Controller 61 can start by calibration dosage, each tracer in tracer B1, B2, B3 is discharged in well.The value of the calibration dosage measured by detection system can be used to determine the rate value of tracer.Then, controller 61 by release one half-value dose, each tracer in tracer B1 and tracer B2 to be to characterize the value more specifically of moisture content.When being detected by detection system, the value of the value of tracer with calibration dosage is compared.Then, determine only to release each in tracer B1, B2 of a half-value dose, thus characterize moisture content in the scope of 0.325-0.35.In like fashion, chemical communication system can be used to obtain the value more specifically of bore parameters (such as moisture content).

Any applicable downhole tool can expecting by comprising any downhole tool described herein uses the chemical communication of the modulation relating to sketch-based user interface amount and/or time.Such as, the modulation of sketch-based user interface or time can be used to transmit the position of the sleeve of downhole valve as above.

In another embodiment, chemical communication system can be configured to by portion transfers data, and when part is combined, it represents complete data.In one embodiment, chemical communication system can be used to come the position of delivery value serially.Such as, in order to delivery value, one or more tracer can be used characterize numeral 0 to 9.If use four tracers, then it can distribute digital as follows:

F1＝0

F2＝1

F3＝2

F4＝3

F1+F2＝4

F1+F3＝5

F1+F4＝6

F2+F3＝7

F2+F4＝8

F3+F4＝9

In order to transmit the pressure of 356psi, controller can discharge tracer F4 at the beginning with primary digital 3 in characterization pressure value.Be enough to make after tracer avoids the period overlapping between release waiting for, controller will release tracer F1 and tracer F3 with deputy digital 5 of characterization pressure value.After this, controller will discharge tracer F1 and tracer F4 with the numeral 6 characterizing the 3rd.In surface, detection system will by these tracers of sequence detection of these tracers of release, and determine the position that characterized by the combination of each tracer or tracer.According to the release order of tracer, detection system will determine that the actual value transmitted is 356psi.Alternatively, can repeat to discharge to obtain the second reading to tracer, thus checking actual value.Alternatively, another Normalized dose between the first reading and the second reading can be released in, with the value of standardization tracer again.In another embodiment, Normalized dose can be sent with verification msg in the ending of communication.In another embodiment, can by backward traffic bit, such as, individual position, then ten, then hundred and kilobit.

In another embodiment, each position can be characterized by least two tracers, as follows:

G1+G2＝0

G1+G3＝1

G1+G4＝2

G1+G5＝3

G2+G3＝4

G2+G4＝5

G2+G5＝6

G3+G4＝7

G3+G5＝8

G4+G5＝9

In another embodiment, numeral can be characterized by the ratio dosage of tracer, thus reduces the quantity of the tracer needed for communication.

G1+0.25?G2＝0

G1+0.5?G2＝1

G1+0.75?G2＝2

G1+G2＝3

0.25?G1+0.25?G2＝4

0.25?G1+0.5?G2＝5

0.25?G1+0.75?G2＝6

0.25?G1+G2＝7

0.5?G1+0.5?G2＝8

0.5?G1+G2＝9

The embodiment of chemical communication system can be used for the communication between two downhole hardwares.In one embodiment, referring back to Fig. 3, chemical communication system allows inflow control device 112 to communicate with the upstream inflow control device 111 in the first limit 110 or the inflow control device in other limits.Such as, when downstream inflow control device 112 discharge by its sensor measurement, characterize water cut value (or other bore parameters) tracer time, the detection system that these tracers will upstream advance in surface.In this embodiment, upstream inflow control device 111 can be equipped with the detection system for detecting the tracer discharged by downstream inflow control device 112 or other devices.If upstream device 111 determines that the tracer discharged characterizes high-moisture percentage value, then controller can cut out upstream device 111 and flows into prevent water.

In another embodiment, can utility command signal (being such as the coding fluid pressure pulses of target with specific device) be sampled by the one or more devices in well.Referring again to Fig. 3, the command signal that can to send with the downstream inflow control device 112 in the first limit 110 be target, passes on information about bore parameters or device 112 with trigger downstream device 112 by the combination of release tracer or tracer.After downstream unit 112 is sampled, can sample to upstream device 111.Send second command signal that is target with the upstream inflow control device 111 in the first limit 110, pass on information about bore parameters or device 111 to trigger upstream device 111 by the combination of release tracer or tracer.If the tracer in each device 111,112 is identical, then can send command signal to avoid confusion with predetermined time interval.If the tracer in each device 111,112 is device 111,112 distinctive, then this time interval can be minimum or unnecessary.This process can be performed, to sample to other inflow control devices in Second Edge 120 and the 3rd limit 130.

In another embodiment, tracer can be discharged from surface, to communicate with one or more downhole hardware.Can encode to tracer, to communicate with specific device or one group of device.Downhole hardware can be equipped with the detection system in order to detect the tracer from surface release.Such as, can from surface release with inflow control device 111 be target tracer or tracer combination.When tracer being detected, inflow control device 111 can be triggered to transmit bore parameters or the data about inflow control device 111 self.Owing to encoding, so other inflow control devices will be ignored tracer and not respond for inflow control device 111 pairs of tracers.In like fashion, the two-way communication using tracer can be carried out.

In another embodiment, chemical communication system can be used transmit the information about downhole hardware.Such as, tracer can be used to transmit the situation of the battery in downhole hardware.In one example, tracer or tracer combination can be used to characterize the percentage in remaining power life-span.

G1=20%< life-span <30%

G2=10%< life-span <20%

G1+G2=life-span <10%

Therefore, controller can discharge tracer G2, is less than 20% to transmit the remaining power life-span.In another embodiment, the ratio amount of tracer or tracer combination can be used to transmit the life-span of battery.In another embodiment, for multiple device, one group of tracer that each device all can be equipped with it unique.

In another embodiment, chemical communication system may be used for transmitting the information about the fluid state (fluid regime) in well.Such as, repeatedly can discharge tracer, to advance towards detection system along well bore.The measured value of the measured value at every turn discharged and another release can be compared.If the measured value of release is consistent, then fluid state in the wellbore can be indicated to be laminar-flow type.But, if the measured value of release is different, then fluid state in the wellbore can be indicated to be that turbulent flow or instruction there occurs leakage.

In another embodiment, a kind of sending comprises from the method for the bore parameters of downhole tool: provide multiple tracer to characterize the code of the value for transmitting bore parameters, wherein, this code comprises multiple code element, and wherein, each code element is characterized by the combination of tracer or different tracer; Sensor is used to measure the value of bore parameters; The value of measured bore parameters is associated with code element; The combination of tracer or different tracer that release characterizes code element is upstream to advance; Detect the appearance of the combination of tracer or different tracer; And determine the occurrence of bore parameters from the combination of detected tracer or different tracer or the scope of value.

In another embodiment, send and comprise from the method for the bore parameters of downhole tool: provide a multiple tracer chemical, the release of unique combinations of the subgroup of single tracer chemical or multiple tracer chemical associates with the scope of the occurrence of bore parameters or value by the code comprising multiple code element thus; Sensor is used to measure the value of bore parameters; Measured value is attributed to code element; Discharge one or more tracer chemical corresponding with code element in multiple tracer chemical; Detect the appearance of one or more tracer chemical agent in multiple tracer chemical; And determine the occurrence of measured bore parameters or the scope of value according to the detection of one or more tracer chemical agent in multiple tracer chemical.

In one or more embodiments in embodiment described herein, measured value is attributed to code element and performs in down-hole.

In one or more embodiments in embodiment described herein, the appearance detecting one or more tracer chemical agent in multiple tracer chemical performs on the surface of well.

In another embodiment, a kind of sending comprises from the method for the bore parameters of downhole tool: generate the code comprising multiple code element, wherein, the occurrence of bore parameters or the scope of value associate with the unique pattern of one or more tracer chemical in the multiple tracer chemical of release by each discrete code element; Position in the wellbore provides multiple tracer chemical; Sensor is used to measure the value of bore parameters; Measured value is attributed to the discrete code element of code; One or more tracer chemical in multiple tracer chemical is discharged with the unique pattern corresponding with discrete code element; Detect the appearance of one or more tracer chemical under unique pattern in multiple tracer chemical; And determine the occurrence of measured bore parameters or the scope of value according to the detection of one or more tracer chemical in multiple tracer chemical.

In one or more embodiments in embodiment described herein, discharge while pattern comprises two or more tracer chemicals in multiple tracer chemical.

In one or more embodiment in embodiment described herein, pattern comprises the order release of two or more tracer chemicals in multiple tracer chemical.

In another embodiment, a kind of sending comprises from the method for the bore parameters of downhole tool: down well placement place in the wellbore provides multiple tracer chemical; Sensor is used to measure the value of bore parameters; One or more tracer chemical in multiple tracer chemical is discharged with the unique pattern corresponding with the value of measured bore parameters; The appearance of one or more tracer chemical under unique pattern in multiple tracer chemical is detected at the surface location place of well; And determine the occurrence of measured bore parameters or the scope of value according to the detection of one or more tracer chemical in multiple tracer chemical.

Although foregoing teachings is for embodiments of the invention, other embodiments of the present invention or other embodiment can be designed when not deviating from base region of the present invention, and the scope of the invention is indicated in the appended claims.

Claims (44)

1. send a method for the bore parameters from downhole tool, comprising:

Be provided for multiple tracers of the value characterizing described bore parameters;

Sensor is used to measure described bore parameters;

Described bore parameters is associated with the value characterized by one or more tracer in described multiple tracer;

Discharge one or more tracer in described multiple tracer upstream to advance;

Detect the appearance of one or more tracer in described multiple tracer; And

Described bore parameters is determined according to one or more tracer in detected described multiple tracer.

2. method according to claim 1, wherein, each tracer in described multiple tracer is endowed different values.

3. method according to claim 1, wherein, each tracer in described multiple tracer comprises chemical agent.

4., for sending a system for the bore parameters from downhole tool, comprising:

Multiple tracer, for characterizing the value of described bore parameters;

Multiple container, for storing described multiple tracer;

First sensor, for measuring described bore parameters;

Downhole controller, is configured to described bore parameters associated with one or more tracer in described multiple tracer and be configured to discharge one or more tracer in described multiple tracer;

Second sensor, for detecting the appearance of one or more tracer in described multiple tracer; And

Well head controller, is configured to determine described bore parameters according to one or more tracer in detected described multiple tracer.

5. system according to claim 4, wherein, each tracer in described multiple tracer is endowed different values.

6. system according to claim 4, wherein, each tracer in described multiple tracer comprises chemical agent.

7. system according to claim 4, wherein, described container is pressurized.

8. system according to claim 4, wherein, described first sensor is positioned at down-hole and described second sensor is positioned at well head.

9., for sending a method for the bore parameters from multiple downhole tool, comprising:

First group of tracer is associated with the first downhole tool;

Associated with the second downhole tool by second group of tracer, wherein, described first group of tracer and described second group of tracer characterize the value of described bore parameters;

Use the sensor of described first downhole tool to measure described bore parameters;

Described bore parameters is associated with the value characterized by one or more tracer in described first group of tracer;

Discharge one or more tracer in described first group of tracer upstream to advance;

Detect the appearance of one or more tracer in described first group of tracer;

Described bore parameters is determined according to one or more tracer in detected described first group of tracer; And

Determine one or more tracer that have sent from described first downhole tool described first group of tracer.

10. method according to claim 9, wherein, each tracer in described first group of tracer is endowed different values.

11. methods according to claim 9, wherein, each tracer in described first group of tracer comprises chemical agent.

12. 1 kinds of methods operating the multiple downhole valves in well, comprising:

Tracer is associated with each described downhole valve;

Open at least one downhole valve in described downhole valve;

The tracer that delayed release is associated with at least one downhole valve opened;

Detect the appearance of described tracer in described well; And

Determine the position of at least one downhole valve in described well of opening.

13. methods according to claim 12, wherein, tracer described in delayed release, until annular pressure is greater than borehole pressure.

14. methods according to claim 12, wherein, discharging described tracer needs to open sluice valve and one way valve.

15. 1 kinds of methods operating downhole valve, comprising:

Tracer is associated with described downhole valve;

Open described downhole valve and described downhole valve is locked in open position; And

Release tracer is in described open position to indicate described downhole valve.

16. methods according to claim 15, wherein, described downhole valve comprises baffle plate and the shiftable sleeve for opening described baffle plate.

17. 1 kinds of methods operating down-hole pump, comprising:

Be provided for multiple tracers of the value characterizing hydrostatic head;

Sensor is used to measure described hydrostatic head;

Measured hydrostatic head is associated with the value characterized by one or more tracer in described multiple tracer;

Discharge one or more tracer in described multiple tracer upstream to advance;

Detect the appearance of one or more tracer in described multiple tracer;

Described hydrostatic head is determined according to one or more tracer in detected described multiple tracer; And

Described down-hole pump is operated in response to measured hydrostatic head.

18. methods according to claim 17, wherein, described down-hole pump comprises and can insert screw pump.

19. methods according to claim 17, wherein, described screw pump comprises the stator that can be attached to discharging and produce pipeline.

20. methods according to claim 17, wherein, each tracer in described multiple tracer characterizes different values.

21. methods according to claim 20, wherein, can combine at least two tracers in described tracer to characterize another value.

22. 1 kinds of methods sending the bore parameters from downhole tool, comprising:

There is provided multiple tracer to characterize the code of the value for transmitting described bore parameters, wherein, described code comprises multiple code element, and wherein, each code element is characterized by the combination of tracer or different tracer;

Sensor is used to measure the value of described bore parameters;

The value of measured described bore parameters is associated with code element;

The combination of described tracer or different tracer that release characterizes described code element is upstream to advance;

Detect the appearance of the combination of described tracer or different tracer; And

The occurrence of described bore parameters or the scope of value are determined in combination according to detected tracer or different tracer.

23. 1 kinds of methods sending the bore parameters from downhole tool, comprising:

There is provided multiple tracer chemical, the release of the unique combinations of the subgroup of single tracer chemical or described multiple tracer chemical associates with the occurrence of described bore parameters or the scope of value by the code comprising multiple code element thus;

Sensor is used to measure the value of described bore parameters;

Measured value is attributed to code element;

Discharge one or more tracer chemical corresponding with described code element in described multiple tracer chemical;

Detect the appearance of one or more tracer chemical in described multiple tracer chemical; And

The occurrence of measured bore parameters or the scope of value is determined according to the detection of one or more tracer chemical agent in described multiple tracer chemical.

24. methods according to claim 23, wherein, are attributed to code element by measured value and perform in down-hole.

25. methods according to claim 23, wherein, the appearance detecting one or more tracer chemical in described multiple tracer chemical performs on the surface of described well.

26. 1 kinds of methods sending the bore parameters from downhole tool, comprising:

Generate the code comprising multiple code element, wherein, the occurrence of described bore parameters or the scope of value associate with the unique pattern of one or more tracer chemical in the multiple tracer chemical of release by each discrete code element;

Position in the wellbore provides described multiple tracer chemical;

Sensor is used to measure the value of described bore parameters;

Measured value is attributed to the discrete code element of described code;

One or more tracer chemical in described multiple tracer chemical is discharged with the unique pattern corresponding with described discrete code element;

Detect the appearance of one or more tracer chemical under described unique pattern in described multiple tracer chemical; And

The occurrence of measured bore parameters or the scope of value is determined according to the detection of one or more tracer chemical in described multiple tracer chemical.

27. methods according to claim 26, wherein, discharge while described pattern comprises two or more tracer chemicals in described multiple tracer chemical.

28. methods according to claim 26, wherein, described pattern comprises the order release of two or more tracer chemicals in described multiple tracer chemical.

29. 1 kinds of methods sending the bore parameters from downhole tool, comprising:

Down well placement place in the wellbore provides multiple tracer chemical;

Sensor is used to measure the value of described bore parameters;

To discharge one or more tracer chemical in described multiple tracer chemical with the corresponding unique pattern of value of measured described bore parameters;

The appearance of one or more tracer chemical under described unique pattern in described multiple tracer chemical is detected at the surface location place of described well; And

The occurrence of measured bore parameters or the scope of value is determined according to the detection of one or more tracer chemical in described multiple tracer chemical.

30. 1 kinds of methods sending the bore parameters from downhole tool, comprising:

Be provided for multiple tracers of the value characterizing described bore parameters;

Sensor is used to measure described bore parameters;

The value that described bore parameters and the ratio scale by one or more tracer in described multiple tracer are levied is associated;

Discharge the ratio amount of one or more tracer in described multiple tracer upstream to advance;

Detect the appearance of the ratio amount of one or more tracer in described multiple tracer; And

Ratio amount according to one or more tracer in detected described multiple tracer determines described bore parameters.

31. methods according to claim 30, also comprise: the calibration dosage discharging described multiple tracer.

32. methods according to claim 30, wherein, each ratio amount of described multiple tracer is endowed different values.

33. methods according to claim 30, wherein, each tracer in described multiple tracer comprises chemical agent.

34. methods according to claim 30, wherein, each tracer is released from the container storing this tracer.

35. methods according to claim 34, also comprise: use mechanical actuator to open described container.

36. 1 kinds of methods sending the bore parameters from downhole tool, comprising:

Be provided for multiple tracers of the value characterizing described bore parameters;

Sensor is used to measure described bore parameters;

Each numerical digit of described bore parameters is associated with the value characterized by one or more tracer in described multiple tracer;

Discharge one or more tracer of the sign each in described multiple tracer upstream to advance;

The appearance of one or more tracer in described multiple tracer is detected for each; And

Described bore parameters is determined according to for one or more tracer in the described multiple tracer detected by each position.

37. 1 kinds of methods of monitoring the state of downhole tool, comprising:

Be provided for multiple tracers of the state characterizing described downhole tool;

Change the state of described downhole tool; And

Release characterizes the tracer of the state of the described downhole tool after changing.

38. according to method according to claim 37, and wherein, the state changing described downhole tool comprises the parts of mobile described downhole tool.

39. according to method according to claim 38, and wherein, the movement in response to described parts discharges described tracer.

40. 1 kinds of methods of monitoring downhole tool, comprising:

Be stored in by multiple tracer in multiple chamber, wherein, the tracer in each chamber in described multiple chamber characterizes the diverse location of the parts of described downhole tool;

Mobile described parts are to change the position of described parts;

Move along with described parts and sequentially open described multiple chamber, thus discharging described tracer from opened chamber;

Detect just d/d described tracer; And

Determine the position of described parts.

41. methods according to claim 40, wherein, described multiple chamber is closed by described parts.

42. methods according to claim 40, wherein, described multiple chamber is closed by the corresponding cap seal being couple to described parts.

43. according to method according to claim 37, wherein, discharges described tracer with ratio amount.

44. according to method according to claim 37, wherein, discharges described tracer according to the time.