CN109424356A - Drilling fluid leakage position detecting system and method - Google Patents
Drilling fluid leakage position detecting system and method Download PDFInfo
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- CN109424356A CN109424356A CN201710740856.6A CN201710740856A CN109424356A CN 109424356 A CN109424356 A CN 109424356A CN 201710740856 A CN201710740856 A CN 201710740856A CN 109424356 A CN109424356 A CN 109424356A
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- drilling fluid
- drilling
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Classifications
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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
- E21B47/10—Locating fluid leaks, intrusions or movements
- E21B47/11—Locating fluid leaks, intrusions or movements using tracers; using radioactivity
-
- 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
- E21B47/04—Measuring depth or liquid level
Abstract
Drilling fluid leakage position detecting system and method, the system include: several tracers, are used to measure the drilling fluid conditions parameter of itself present position during the motion；Multiple measurement while drilling pipe nipples are used to measure the drilling fluid conditions parameter of depth locating for itself, obtain reference depth and its corresponding drilling fluid reference state parameter；Data processing equipment, it is configured to obtain the drilling fluid conditions parameter curve of drilling well according to the collected drilling fluid conditions parameter of several tracers, and according to the situation of change of drilling fluid conditions parameter curve, in conjunction with reference depth and drilling fluid reference state parameter that the transmission of multiple measurement while drilling pipe nipples comes, the depth missed is determined.Compared to existing method, drilling fluid leakage position detecting system provided by the present invention and method measurement are accurate, instrumentation is simple, tripping in is convenient, and it can be used to the measurements of drilling fluid leakage position in high temperature, high pressure, drilling fluid environment.
Description
Technical field
The present invention relates to oil-gas exploration and development technical fields, specifically, be related to drilling fluid leakage position detecting system and
Method.
Background technique
With the gradually failure of conventional gas and oil resource, ultra deep, bad ground and unconventional oil and gas layer have been moved towards in drilling well, complicated
Geological environment and Special Drilling Operation technique make circulation problems more prominent.In recent years with turning to Piedmont Structure due to survey area
Area, the number that leakage occurs obviously increase.
Occur generally to exist simultaneously following three conditions when leakage: there are certain positive differential pressures between first, with reservoir；The
Two, there are leakage channels in reservoir；Third, the size of solid phase particles is less than the pore throat character size of reservoir in drilling fluid.Work as chance
When to crack or other gap stratum, the drilling fluid with pressure will be leaked from the annular space of pit shaft to the inside of stratum, serious
When, the drilling fluid for injecting stratum can all leak into stratum, and the mistake of ground drilling liquid is caused to be returned.
After leakage occurs, in order to implement plugging operations, the position for determining drop ply is first had to, drop ply property could be analyzed.Mesh
Drilling fluid leakage method for detecting position used by preceding mainly has well temperature testing method, radioactive trace mensuration, cement bond logging
Well method etc., but these methods none can be used for high temperature, high pressure, measure in drilling fluid environment.
Summary of the invention
To solve the above problems, the present invention provides a kind of drilling fluid leakage position detecting system, the system comprises:
Several tracers, be used for when drilling well is missed with circulation of drilling fluid lower going-into-well bottom and by bit port into
Ground is returned to after entering annular space, the tracer is configured to measure the drilling fluid conditions ginseng of itself present position during the motion
Number；
Multiple measurement while drilling pipe nipples, different measurement while drilling pipe nipples are distributed at the different location of drilling tool, for itself institute
The drilling fluid conditions parameter of place's depth measures, and obtains reference depth and its corresponding drilling fluid reference state parameter；
Data processing equipment is configured to be obtained according to several collected drilling fluid conditions parameters of tracer described
The drilling fluid conditions parameter curve of drilling well, and according to the situation of change of the drilling fluid conditions parameter curve, in conjunction with the multiple
The reference depth and drilling fluid reference state parameter that the transmission of measurement while drilling pipe nipple comes, determine the depth missed.
According to one embodiment of present invention, the data processing equipment is configured to according to the reference depth and drilling fluid
Reference state parameter to carry out depth calibration to the drilling fluid conditions parameter curve, then according to drilling fluid conditions parameter curve
Situation of change determine the depth missed.
According to one embodiment of present invention, the data processing equipment is configured to the drilling fluid conditions parameter curve
After carrying out depth calibration, the curve mutated site of the drilling fluid conditions parameter curve is obtained, and obtains curve mutation position
The reference depth and corresponding drilling fluid reference state parameter for setting two sides are joined in conjunction with the drilling fluid conditions of the curve mutated site
Number, the depth of the curve mutated site is determined using interpolation method according to the reference depth of curve mutated site two sides, from
And obtain the depth missed.
According to one embodiment of present invention, the tracer includes:
Sensor；
Signal conditioning circuit is connect with the sensor；
Data acquisition circuit is connect with the signal conditioning circuit, for what is come to signal conditioning circuit transmission
Analog signal carries out analog-to-digital conversion, and the drilling fluid conditions parameter being converted to is stored in itself storage unit；
Signal circuit is connect with the data processing module.
According to one embodiment of present invention, the tracer further includes composite material inclusion enclave, the sensor, signal
Conditioning circuit, data acquisition circuit and signal circuit are fixed in the composite material inclusion enclave.
According to one embodiment of present invention, the outer wall of the measurement while drilling pipe nipple is provided with several cavitys, in the cavity
It is provided with tracer, the tracer is fixed in the cavity by cover board.
According to one embodiment of present invention, the cavity annular on the outer wall of the measurement while drilling pipe nipple is uniformly distributed.
The present invention also provides a kind of drilling fluid leakage method for detecting position, the method is based on as above described in any item
The detection of system progress drilling fluid leakage position, which comprises
Step 1: put into tracer into drilling tool water hole when leakage occurs, with by the tracer during the motion
Measure the drilling fluid conditions parameter of itself present position；
Step 2: capture the tracer at ground, is read using data processing equipment and stored in the tracer
Drilling well corresponding to itself reference depth obtained measured by multiple measurement while drilling pipe nipples in drilling fluid conditions parameter and drilling tool
Liquid reference state parameter；
Step 3: being obtained using the data processing equipment according to several collected drilling fluid conditions parameters of tracer
To the drilling fluid conditions parameter curve of the drilling well, and according to the situation of change of the drilling fluid conditions parameter curve, in conjunction with institute
The reference depth and drilling fluid reference state parameter that multiple measurement while drilling pipe nipple transmission come are stated, determines the depth missed
Degree.
According to one embodiment of present invention, it after missing, pulls out of hole first, it is then multiple with brill by drilling tool tripping in
Pipe nipple is measured, establishes circulation of drilling fluid channel and drifting when arriving shaft bottom under the drilling tool, wherein different measurement while drilling pipe nipples divide
Cloth is at the different location of drilling tool.
The present invention also provides a kind of drilling fluid leakage method for detecting position, which comprises
Step 1: the drilling fluid conditions parameter at acquisition different depth, obtains drilling fluid conditions parameter curve；
Step 2: acquiring the drilling fluid conditions parameter at different reference depths, the drilling fluid corresponding to reference depth is obtained
Reference state parameter；
Step 3: according to the reference depth and drilling fluid reference state parameter come to the drilling fluid conditions parameter curve
Depth calibration is carried out, obtains the curve mutated site of the drilling fluid conditions curve, and obtain curve mutated site two sides
Reference depth and corresponding drilling fluid reference state parameter, in conjunction with the drilling fluid conditions parameter of the curve mutated site, root
The depth of the curve mutated site is determined according to the reference depth of curve mutated site two sides, thus obtain missing
Depth.
Drilling fluid leakage position detecting system provided by the present invention and method utilize the phase at drilling fluid leakage position
Closing drilling fluid conditions parameter (such as pressure and temperature etc.) will appear the characteristic of mutation, can tentatively be drawn by measurement while drilling pipe nipple
Surely the depth of stratum range of drilling fluid leakage occurs, and determines generation drilling fluid leakage by further data handling procedure
Depth of stratum exact value.Compared to existing method, drilling fluid leakage position detecting system provided by the present invention and
Method measurement is accurate, instrumentation is simple, tripping in is convenient, and it can be used to drilling fluid leakages in high temperature, high pressure, drilling fluid environment
The measurement of position.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.Objectives and other advantages of the present invention can be by specification, right
Specifically noted structure is achieved and obtained in claim and attached drawing.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is required attached drawing in technical description to do simple introduction:
Fig. 1 is the structural schematic diagram of drilling fluid leakage position detecting system according to an embodiment of the invention；
Fig. 2 is the structural schematic diagram of tracer according to an embodiment of the invention；
Fig. 3 is the structural schematic diagram of measurement while drilling pipe nipple according to an embodiment of the invention；
Fig. 4 is the implementation process schematic diagram of drilling fluid leakage method for detecting position according to an embodiment of the invention；
Fig. 5 is the implementation process schematic diagram of drilling fluid leakage method for detecting position in accordance with another embodiment of the present invention；
Fig. 6 is the schematic diagram of full temperature in wellbore curve according to an embodiment of the invention；
Fig. 7 is the schematic diagram of full wellbore pressure curve according to an embodiment of the invention.
Specific embodiment
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, how to apply to the present invention whereby
Technological means solves technical problem, and the realization process for reaching technical effect can fully understand and implement.It needs to illustrate
As long as not constituting conflict, each feature in each embodiment and each embodiment in the present invention can be combined with each other,
It is within the scope of the present invention to be formed by technical solution.
Meanwhile in the following description, for illustrative purposes and numerous specific details are set forth, to provide to of the invention real
Apply the thorough understanding of example.It will be apparent, however, to one skilled in the art, that the present invention can not have to tool here
Body details or described ad hoc fashion are implemented.
In addition, step shown in the flowchart of the accompanying drawings can be in the department of computer science of such as a group of computer-executable instructions
It is executed in system, although also, logical order is shown in flow charts, and it in some cases, can be to be different from herein
Sequence execute shown or described step.
Fig. 1 shows the structural schematic diagram of drilling fluid leakage position detecting system provided by the present embodiment.
If showing as shown in Figure 1, drilling fluid leakage position detecting system provided by the present embodiment includes: that stem structure is identical
Track device 11, multiple measurement while drilling pipe nipples 18 and data processing equipment 19.Wherein, tracer 11 is used to that drilling fluid to occur in drilling well
Ground is returned to after entering annular space with circulation of drilling fluid lower going-into-well bottom when leakage and by bit port.Tracer 11 can move
Drilling fluid conditions parameter at real-time measurement itself present position in the process.
Fig. 2 shows the structural schematic diagrams of tracer provided by the present embodiment.
In the present embodiment, drilling fluid conditions parameter measured by tracer 11 preferably includes pressure and temperature, therefore such as
Shown in Fig. 2, tracer 11 accordingly includes: pressure sensor 21, temperature sensor 22, signal conditioning circuit 23, data acquisition
Circuit 24 and signal circuit 25.Wherein, the sensor, signal conditioning circuit 23, data acquisition circuit 24 and letter
Number transmission circuit 25 is each attached in composite material inclusion enclave 28.In the present embodiment, composite material inclusion enclave 28 being capable of anti-drilling well
Corrosion, anti-drilling well liquid wash away, shock resistance, high temperature resistant and high pressure resistant.
Certainly, in other embodiments of the invention, according to actual needs, sensor included in tracer 11 both may be used
To be only pressure sensor 21 or temperature sensor 22, it also may include other unlisted logical sensors, the present invention is unlimited
In this.
In the present embodiment, pressure sensor 21 for measuring pressure suffered by tracer 11, then use by temperature sensor 22
In the current temperature of measurement tracer 11.In order to guarantee that the pressure data obtained measured by pressure sensor 21 can be more accurate
Ground reflects the pressure that tracer 11 is currently subject to, and in the present embodiment, the composite material inclusion enclave 28 of tracer 11 is provided with pair
The test side of the opening answered, pressure sensor 21 passes through the opening and external contact.
As shown in Fig. 2, pressure sensor 21 and temperature sensor 22 are connect with signal conditioning circuit 23, signal condition electricity
Road 23 can transmit the pressure signal come to pressure sensor 21 and temperature sensor 22 and temperature signal carries out corresponding mould
Quasi- signal processing (such as amplification and/or filtering etc.), then by treated, analog signal transmission to the data being attached thereto are adopted
Collector 24.
In the present embodiment, data acquisition circuit 24 can transmit the analog signal come to signal conditioning circuit 23 and carry out mould
Number conversion, and the digital signal being converted to (including the drilling fluid conditions parameter of pressure data and temperature data) is stored in
In the storage unit of itself.Wherein, data acquisition circuit 24 is in the mistake that drilling fluid conditions parameter is stored in itself storage unit
Cheng Zhong can also stamp corresponding time tag to drilling fluid conditions parameter.
It should be pointed out that in other embodiments of the invention, according to actual needs, data acquisition circuit 24 can be with
Corresponding external memory is configured, collected drilling fluid conditions parameter is stored in external memory, the present invention is unlimited
In this.
In the present embodiment, data acquisition circuit 24 is additionally provided with corresponding peripheral circuit (such as crystal oscillator 26 and power supply 27
Deng).Wherein, crystal oscillator 26 is used to be used as clock, and data acquisition circuit 24 as clock and passes through 26 timing of crystal oscillator with crystal oscillator 26
And time label is carried out to collected drilling fluid conditions parameter.
Data acquisition circuit 24 is also connect with data transmission circuit 25, and data transmission circuit 25 can be by data acquisition circuit
The 24 drilling fluid conditions parameters stored are transmitted in the data processing equipment 19 on ground, with by data processing equipment 19 basis
Above-mentioned drilling fluid conditions parameter determines the position missed.In addition, according to actual needs, data transmission circuit 25 can also incite somebody to action
The corresponding external command received is transmitted to data acquisition circuit 24, to control data acquisition circuit 24 and other mutually powered-down
The operating status on road.
It should be pointed out that in different embodiments of the invention, data transmission circuit 25 can both use wired connection
Mode with data processing equipment 19 establish data transmission link, can also by the way of being wirelessly connected come with data processing
Device 19 establishes data transmission link, and the invention is not limited thereto.
Again as shown in Figure 1, in the present embodiment, which includes multiple measurement while drilling pipe nipples 18.It is different with
Measurement pipe nipple 18 is bored to be distributed at the different location of drilling tool (such as drill string 13), it is different in this way after drilling tool is lowered into shaft bottom
Position at different depths is had fixed depth by measurement while drilling pipe nipple 18.Measurement while drilling pipe nipple 18 can be to itself
Drilling fluid conditions parameter at locating depth (i.e. reference depth) measures, to obtain different reference depths and its corresponding
Drilling fluid reference state parameter.
Fig. 3 shows the structural schematic diagram of measurement while drilling pipe nipple 18 in the present embodiment.As shown in figure 3, in the present embodiment, with
The outer wall for boring measurement pipe nipple 18 is provided with several cavitys 31, is provided with tracer 11 in these cavitys 31, wherein tracer 11 passes through
Cover board 32 is fixed in the cavity 31 of measurement while drilling pipe nipple 18.In the present embodiment, in order to enable tracer 11 can be more accurate
Ground measures the drilling fluid conditions parameter (such as pressure and/or temperature etc.) at 31 present position of cavity, and cover board 32 is distributed
There is opening, so that the sensor in tracer 11 can be accurately obtained pressure data and/or temperature data.
Meanwhile the cavity on the outer wall of measurement while drilling pipe nipple 18 is preferably arranged using the equally distributed mode of annular.Such as
Shown in Fig. 3, for the measurement while drilling pipe nipple 18,3 cavitys are distributed in outer wall, and neighboring chambers are in this 3 cavitys
120 degree of angles.Certainly, in other embodiments of the invention, the number for the cavity being distributed on the outside of measurement while drilling pipe nipple 18
Amount can also be other fair amounts, and the invention is not limited thereto.
Data processing equipment 19 can obtain the drilling fluid conditions collected of tracer 11 for obtaining and capturing from drilling fluid
Parameter, meanwhile, it can also obtain corresponding to the obtained reference depth of above-mentioned measurement while drilling pipe nipple and each reference depth
Drilling fluid reference state parameter, and according to corresponding to above-mentioned drilling fluid conditions parameter, reference depth and each reference depth
Drilling fluid reference state parameter determine the depth missed.
Fig. 4, which is shown, carries out drilling fluid leakage position using the drilling fluid leakage position detecting system provided by the present embodiment
The implementation process schematic diagram for setting the method for detection, is further described this method below in conjunction with Fig. 1 and Fig. 4.
As shown in figure 4, this method can judge whether to miss in step S401 first in the present embodiment.Wherein, such as
Fruit is missed, and party's rule can play out drill string 13 in step S402 on derrick 12, then in drill string 13 it is multiple access with
Measurement pipe nipple 18 is bored, and drill string 13 is lowered into shaft bottom again.Before circulation of drilling fluid, this method can be dismantled in step S403
Drill string 13 simultaneously puts into a collection of tracer 11 into drill string hydrophthalmia, then starts drifting again.
After drifting, the tracer 11 put into drill string hydrophthalmia will be lowered into drill string runner 14 with circulation of drilling fluid
Shaft bottom.After being lowered into shaft bottom, tracer 11 will enter annular space 15 by the hydrophthalmia of drill bit 16, finally again as landwaste returns together
Go back to ground.In the present embodiment, tracer 11 in the process of movement, can real-time measurement itself present position temperature data and
Pressure data is simultaneously stored in the storage unit of itself, therefore after tracer 11 returns to ground, can measure to obtain full well
The temperature data and pressure data of cylinder.
As shown in figure 4, this method can go out on ground in step s 404 after tracer 11 returns to ground with landwaste
These tracers 11 are captured, the drilling fluid conditions ginseng stored in these tracers 11 is read by corresponding read-write equipment
Number.Meanwhile this method also can read itself ginseng obtained measured by each measurement while drilling pipe nipple 18 in drilling tool in step s 404
Examine drilling fluid reference state parameter corresponding to depth.
After reading the drilling fluid conditions parameter that it is stored in the tracer 11 captured, by 11 institute of tracer
Acquire and store be full pit shaft drilling fluid conditions parameter, this method can in step S405 using data processing equipment 19 come
The drilling fluid conditions parameter curve of drilling well is obtained according to these drilling fluid conditions parameters.Then, this method can be in step S406
It is middle using data processing equipment 19 according to the situation of change of drilling fluid conditions parameter curve, join in conjunction with reference depth and drilling fluid
State parameter is examined, to determine the depth missed.
Due to tracer when acquiring drilling fluid conditions parameter can't sampling depth data should in the present embodiment
Method can carry out drilling fluid conditions parameter curve according to reference depth and drilling fluid reference state parameter in step S406
Depth calibration, and then the depth missed is determined according to the situation of change of drilling fluid conditions parameter curve.
When tracer 11 is by drilling fluid leakage stratum 17, the temperature and pressure of drilling fluid can change, and drilling well
This mutation of the temperature and pressure of liquid can also be collected and recorded by tracer 11.Therefore, this method can also pass through drilling well
The curve mutated site of liquid status parameter curve determines the position missed, and determines corresponding to curve mutated site
Depth be also assured that out the depth of the position missed.
Specifically, in the present embodiment, the depth of each measurement while drilling pipe nipple and the depth drilling fluid conditions parameter
Value is obtained by measurement, i.e., the value of each reference depth and its corresponding drilling fluid reference state parameter can pass through
Measurement obtains.This method can be by choosing the value phase with drilling fluid reference state parameter from drilling fluid conditions parameter curve
Same point is also achieved that the calibration of the depth to drilling fluid conditions parameter curve as depth coincidence point in this way.
For the curve mutated site of drilling fluid conditions parameter curve, if the curve mutated site is not with reference to deep
The corresponding position of degree, then this method also can not just directly determine out curve mutation position from drilling fluid conditions parameter curve
Set corresponding depth data.In this case, in the present embodiment, this method uses interpolation method preferably to determine that curve is prominent
Corresponding depth data is set in displacement.
Specifically, after completing to the depth calibration of drilling fluid conditions parameter curve, this method can obtain drilling fluid conditions
The curve mutated site of curve, and obtain the reference depth and corresponding drilling fluid reference state ginseng of the curve mutated site two sides
Number.Then, this method can be according to the value of the drilling fluid conditions parameter of curve mutated site, in conjunction with the curve mutated site two sides
Drilling fluid reference state parameter value, to determine curve according to the value of the reference depth of the curve mutated site two sides
The value of depth corresponding to mutated site.
For example, if the value of the drilling fluid conditions parameter of curve mutated site is the drilling fluid reference state ginseng of its two sides
The average value of several values, then this method also being averaged the value of the reference depth of the curve mutated site two sides
It is worth the value as depth corresponding to curve mutated site, has also determined that out the depth that the position of drilling fluid leakage occurs in this way
Degree.
Certainly, in other embodiments of the invention, this method can also determine hair using other reasonable interpolation methods
The depth of the position of raw drilling fluid leakage, the invention is not limited thereto.
The present embodiment additionally provides a kind of drilling fluid leakage method for detecting position, wherein Fig. 5 shows the realization of this method
Flow diagram.As shown in figure 5, this method can acquire the drilling well at different depth in step S501 first in the present embodiment
Liquid status parameter obtains drilling liquid parameter curve.In the present embodiment, this method is preferably by above-mentioned tracer 11 to acquire not
With depth drilling fluid conditions parameter, realization principle and process are identical as the action principle of above-mentioned tracer 11, therefore
No longer the particular content of step S501 is repeated herein.
This method can also acquire the drilling fluid conditions parameter at different reference depths in step S502, to be corresponded to
In the drilling fluid reference state parameter of different reference depths.Specifically, in the present embodiment, this method is preferably by measurement while drilling
Pipe nipple measures the drilling fluid reference state parameter corresponding to different reference depths.
After obtaining drilling fluid conditions parameter curve, different reference depths and its corresponding drilling fluid reference state parameter,
This method can in step S503 according to reference depth and drilling fluid reference state parameter come to drilling fluid conditions parameter curve into
The calibration of row depth.Then, this method can be in step S504 according to the situation of change of drilling fluid conditions parameter curve, in conjunction with reference
Depth and drilling fluid reference state parameter determine the depth missed.Specifically, in the present embodiment, this method can obtain first
Take the mutated site of drilling fluid conditions curve, then obtain again curve mutated site two sides reference depth and corresponding drilling fluid
Reference state parameter carrys out the reference depth according to curve mutated site two sides in conjunction with the drilling fluid conditions parameter of curve mutated site
Spend the depth for determining curve mutated site.
Wherein, in the present embodiment, the specific implementation principle of above-mentioned steps S504 and step S505 and realize process with
The content that above-mentioned steps S406 is illustrated is identical, thus herein no longer to the related content of above-mentioned steps S504 and step S505 into
Row repeats.
Fig. 6 shows the schematic diagram for passing through the obtained full temperature in wellbore curve of tracer in the present embodiment.Wherein, well depth
It is provided after being demarcated by 4 measurement while drilling pipe nipples.As shown in fig. 6, measurement while drilling pipe nipple be recorded respectively 3000m, 3050m,
The temperature data of 3100m and 3150m depth, the temperature data of this 4 depths are respectively as follows: 55 DEG C, 62 DEG C, 65 DEG C and 70
℃.It can be seen that the curve in 3100m to 3150m range there are a temperature jump point by full temperature in wellbore curve, it should
Temperature jump point reflects the temperature variations at drilling fluid leakage position.It is calculated by data interpolating, the temperature jump point
Corresponding well depth is 3120m, i.e., drilling fluid leakage has occurred at the position of underground 3120m.
Fig. 7 shows the schematic diagram for passing through the obtained full wellbore pressure curve of tracer in the present embodiment.Wherein, well depth
It is provided after being demarcated by 4 measurement while drilling pipe nipples.As shown in fig. 7, measurement while drilling pipe nipple be recorded respectively 3000m, 3050m,
The pressure data of the pressure data of 3100m and 3150m depth, this 4 depths is respectively as follows: 30MPa, 31MPa, 32MPa
And 40MPa.Can be seen that the curve in 3100m to 3150m range by full wellbore pressure curve, there are a pressure jumps
Point, the pressure jump point reflect the pressure changing at drilling fluid leakage position.It is calculated by data interpolating, the pressure is prominent
Well depth corresponding to height is equally 3120m, i.e., drilling fluid leakage has occurred at the position of underground 3120m.
As can be seen that drilling fluid leakage position detecting system provided by the present invention and method utilize from foregoing description
Associated drilling fluid state parameter (such as pressure and temperature etc.) at drilling fluid leakage position will appear the characteristic of mutation, by with
The depth of stratum range that drilling fluid leakage occurs can tentatively be delimited by boring measurement pipe nipple, while further data handling procedure is also
It can determine the exact value that the depth of stratum of drilling fluid leakage occurs.Compared to existing method, drilling well provided by the present invention
Liquid leak position detection system and method measurement are accurate, instrumentation is simple, tripping in is convenient, it can be used to high temperature, high pressure,
The measurement of drilling fluid leakage position in drilling fluid environment.
It should be understood that disclosed embodiment of this invention is not limited to specific structure disclosed herein or processing step
Suddenly, the equivalent substitute for these features that those of ordinary skill in the related art are understood should be extended to.It should also be understood that
It is that term as used herein is used only for the purpose of describing specific embodiments, and is not intended to limit.
" one embodiment " or " embodiment " mentioned in specification means the special characteristic described in conjunction with the embodiments, structure
Or characteristic is included at least one embodiment of the present invention.Therefore, the phrase " reality that specification various places throughout occurs
Apply example " or " embodiment " the same embodiment might not be referred both to.
Although above-mentioned example is used to illustrate principle of the present invention in one or more application, for the technology of this field
For personnel, without departing from the principles and ideas of the present invention, hence it is evident that can in form, the details of usage and implementation
It is upper that various modifications may be made and does not have to make the creative labor.Therefore, the present invention is defined by the appended claims.
Claims (10)
1. a kind of drilling fluid leakage position detecting system, which is characterized in that the system comprises:
Several tracers are used for when drilling well is missed with circulation of drilling fluid lower going-into-well bottom and enter ring by bit port
Ground is returned to after sky, the tracer is configured to measure the drilling fluid conditions parameter of itself present position during the motion；
Multiple measurement while drilling pipe nipples, different measurement while drilling pipe nipples are distributed at the different location of drilling tool, for deep locating for itself
The drilling fluid conditions parameter of degree measures, and obtains reference depth and its corresponding drilling fluid reference state parameter；
Data processing equipment is configured to obtain the drilling well according to several collected drilling fluid conditions parameters of tracer
Drilling fluid conditions parameter curve, and according to the situation of change of the drilling fluid conditions parameter curve, in conjunction with the multiple with brill
The reference depth and drilling fluid reference state parameter that pipe nipple transmission comes are measured, determines the depth missed.
2. the system as claimed in claim 1, which is characterized in that the data processing equipment is configured to according to the reference depth
And drilling fluid reference state parameter to carry out depth calibration to the drilling fluid conditions parameter curve, then according to drilling fluid conditions
The situation of change of parameter curve determines the depth missed.
3. system as claimed in claim 2, which is characterized in that the data processing equipment is configured to the drilling fluid conditions
After parameter curve carries out depth calibration, the curve mutated site of the drilling fluid conditions parameter curve is obtained, and obtain the song
The reference depth of line mutated site two sides and corresponding drilling fluid reference state parameter, in conjunction with the drilling well of the curve mutated site
Liquid status parameter determines the curve mutated site according to the reference depth of curve mutated site two sides using interpolation method
Depth, to obtain the depth missed.
4. system according to any one of claims 1 to 3, which is characterized in that the tracer includes:
Sensor；
Signal conditioning circuit is connect with the sensor；
Data acquisition circuit is connect with the signal conditioning circuit, the simulation for coming to signal conditioning circuit transmission
Signal carries out analog-to-digital conversion, and the drilling fluid conditions parameter being converted to is stored in itself storage unit；
Signal circuit is connect with the data processing module.
5. system as claimed in claim 4, which is characterized in that the tracer further includes composite material inclusion enclave, the biography
Sensor, signal conditioning circuit, data acquisition circuit and signal circuit are fixed in the composite material inclusion enclave.
6. such as system according to any one of claims 1 to 5, which is characterized in that the outer wall of the measurement while drilling pipe nipple is provided with
Several cavitys, tracer is provided in the cavity, and tracer is fixed in the cavity by cover board.
7. system as claimed in claim 6, which is characterized in that the cavity annular on the outer wall of the measurement while drilling pipe nipple is uniformly
Distribution.
8. a kind of drilling fluid leakage method for detecting position, which is characterized in that the method is based on as any in claim 1~7
System described in carries out the detection of drilling fluid leakage position, which comprises
Step 1: tracer is put into drilling tool water hole when leakage occurs, to be measured during the motion by the tracer
The drilling fluid conditions parameter of itself present position；
Step 2: capturing the tracer at ground, the drilling well stored in the tracer is read using data processing equipment
The ginseng of drilling fluid corresponding to itself reference depth obtained measured by multiple measurement while drilling pipe nipples in liquid status parameter and drilling tool
Examine state parameter；
Step 3: obtaining institute according to several collected drilling fluid conditions parameters of tracer using the data processing equipment
The drilling fluid conditions parameter curve of drilling well is stated, and according to the situation of change of the drilling fluid conditions parameter curve, in conjunction with described more
The reference depth and drilling fluid reference state parameter that a measurement while drilling pipe nipple transmission comes, determine the depth missed.
9. method according to claim 8, which is characterized in that after missing, pull out of hole first, then pass through drilling tool tripping in
Multiple measurement while drilling pipe nipples establish circulation of drilling fluid channel and drifting when under the drilling tool to shaft bottom, wherein different to survey with boring
Amount pipe nipple is distributed at the different location of drilling tool.
10. a kind of drilling fluid leakage method for detecting position, which is characterized in that the described method includes:
Step 1: the drilling fluid conditions parameter at acquisition different depth, obtains drilling fluid conditions parameter curve；
Step 2: acquiring the drilling fluid conditions parameter at different reference depths, obtain referring to corresponding to the drilling fluid of reference depth
State parameter；
Step 3: being carried out according to the reference depth and drilling fluid reference state parameter to the drilling fluid conditions parameter curve
Depth calibration, obtains the curve mutated site of the drilling fluid conditions curve, and obtain the ginseng of curve mutated site two sides
Depth and corresponding drilling fluid reference state parameter are examined, in conjunction with the drilling fluid conditions parameter of the curve mutated site, according to institute
The reference depth for stating curve mutated site two sides determines the depth of the curve mutated site, to obtain the depth missed
Degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710740856.6A CN109424356B (en) | 2017-08-25 | 2017-08-25 | Drilling fluid loss position detection system and method |
Applications Claiming Priority (1)
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| CN116066085A (en) * | 2022-11-28 | 2023-05-05 | 中国石油天然气集团有限公司 | Drilling fluid leakage position measuring device and measuring method |
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