CN107201897A - Double-channel measurement-while-drilling system and its downhole modes control method - Google Patents
Double-channel measurement-while-drilling system and its downhole modes control method Download PDFInfo
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- CN107201897A CN107201897A CN201610146975.4A CN201610146975A CN107201897A CN 107201897 A CN107201897 A CN 107201897A CN 201610146975 A CN201610146975 A CN 201610146975A CN 107201897 A CN107201897 A CN 107201897A
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- 238000005553 drilling Methods 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000005259 measurement Methods 0.000 claims abstract description 41
- 238000009532 heart rate measurement Methods 0.000 claims abstract description 31
- 238000005086 pumping Methods 0.000 claims description 17
- 230000001133 acceleration Effects 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 7
- 238000012360 testing method Methods 0.000 claims description 6
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- NHDHVHZZCFYRSB-UHFFFAOYSA-N pyriproxyfen Chemical compound C=1C=CC=NC=1OC(C)COC(C=C1)=CC=C1OC1=CC=CC=C1 NHDHVHZZCFYRSB-UHFFFAOYSA-N 0.000 description 2
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/13—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
- E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
Abstract
The invention discloses a kind of double-channel measurement-while-drilling system and its downhole modes control method, belong to drilling measuring technology field, solving supporting two kinds of measurement-while-drilling systems causes the problem of cost is higher.The double-channel measurement-while-drilling system includes pulse measurement while drilling mode channel and electromagnetic measurement while drilling mode channel.The downhole modes control method of the double-channel measurement-while-drilling system includes：Switch between pulse measurement while drilling pattern and electromagnetic measurement while drilling pattern.
Description
Technical field
The present invention relates to drilling measuring technology field, specifically, be related to a kind of double-channel measurement-while-drilling system and
Its downhole modes control method.
Background technology
Measurement while drilling (Measure While Drilling, abbreviation MWD) system is directional well and horizontal well construction
There is provided the engineering parameter and geologic parameter measured in real time, the development of drilling technology has been greatly facilitated.
At present the mud-pulse formula measurement-while-drilling system that generally uses can in liquid phase drilling fluid steady operation, can
The drilling well requirement of deep-well, ultradeep well is met, but under balance pressure drilling can not be applied to.Electromagnetic measurement while drilling
(EM-MWD) system can be efficiently applied under balance pressure drilling, and transmission rate is high, but the transmission of electromagnetic wave signal
Depth is limited by formation resistivity, and transmission depth is relatively shallower, it is difficult to meet the use of deep-well, ultradeep well
It is required that.The construction of some special wells needs supporting both the above measurement-while-drilling system, could complete underground letter
The transmission of breath, therefore drilling cost will greatly improve.
The content of the invention
It is an object of the invention to provide a kind of double-channel measurement-while-drilling system and its downhole modes control method, with
Solving supporting two kinds of measurement-while-drilling systems causes the problem of cost is higher.
The present invention provides a kind of double-channel measurement-while-drilling system, including pulse measurement while drilling mode channel and electromagnetism with
Bore measurement pattern channel.
The present invention also provides a kind of downhole modes control method of above-mentioned double-channel measurement-while-drilling system, including：
Switch between pulse measurement while drilling pattern and electromagnetic measurement while drilling pattern.
On the one hand, by pulse measurement while drilling pattern switching to electromagnetic measurement while drilling pattern when, specifically include：
The on off state of controlling pump on ground；
Launch the on off state of machine testing pump in underground；
When the on off state of pump meets specific sequence, pulse measurement while drilling pattern switching to electromagnetism is surveyed with brill
Amount pattern.
In one embodiment, the on off state of the detection pump, be specially：
The vibration acceleration of downhole instrument is detected using acceleration transducer；
When vibration acceleration reaches vibration threshold, it is determined as turn on pump state；When vibration acceleration is less than vibration threshold
During value, it is determined as termination of pumping state.
In another embodiment, the on off state of the detection pump, be specially：
Utilize inserting tube detection pipe column pressure and annular pressure；
When the difference between tubing string pressure and annular pressure reaches pressure threshold, it is determined as turn on pump state；Work as pipe
When difference between column pressure and annular pressure is less than pressure threshold, it is determined as termination of pumping state.
Preferably, the specific sequence includes turn on pump state at least twice, and wherein each turn on pump state
All within the scope of default duration.
On the other hand, by electromagnetic measurement while drilling pattern switching to pulse measurement while drilling pattern when, specifically include：
The on off state of controlling pump on ground；
Launch the on off state of machine testing pump in underground；
When the on off state of pump meets specific sequence, electromagnetic measurement while drilling pattern switching to pulse is surveyed with brill
Amount pattern.
Preferably, the specific sequence includes turn on pump state at least twice, and wherein each turn on pump state
All within the scope of default duration.
On the other hand, by electromagnetic measurement while drilling pattern switching to pulse measurement while drilling pattern when, specifically include：
By above-ground launcher electromagnetic signals；
Underground emitter receives and decodes electromagnetic wave signal；
When electromagnetic wave signal is change mode instruction, by electromagnetic measurement while drilling pattern switching to pulse measurement while drilling
Pattern.
Present invention offers following beneficial effect：In the double-channel measurement-while-drilling system that the present invention is provided, including arteries and veins
Measurement while drilling mode channel and electromagnetic measurement while drilling mode channel are rushed, therefore is not required to the supporting two kinds of measurement while drillings of knack
System, so as to reduce drilling cost.Also, present invention also offers the well of the double-channel measurement-while-drilling system
Lower mode control method, can enter horizontal pulse measurement while drilling pattern and electromagnetism according to different well's conditionses and drilling well demand
Real-time switching and control between measurement while drilling pattern, it is not necessary to which pull out of hole more exchange device, so as to shorten drilling well week
Phase, improve productivity effect.
Other features and advantages of the present invention will be illustrated in the following description, also, partial from specification
In become apparent, or by implement the present invention and understand.The purpose of the present invention and other advantages can pass through
Specifically noted structure is realized and obtained in specification, claims and accompanying drawing.
Brief description of the drawings
, below will be to needed for embodiment description for the technical scheme in the clearer explanation embodiment of the present invention
The accompanying drawing wanted does simple introduction：
Fig. 1 is the flow chart for the downhole modes control method that the embodiment of the present invention one is provided；
Fig. 2 is the detail flowchart of the first embodiment in the embodiment of the present invention one；
Fig. 3 is the detail flowchart of second of embodiment in the embodiment of the present invention one；
Fig. 4 is the flow chart for the downhole modes control method that the embodiment of the present invention two is provided；
Fig. 5 is the flow chart for the downhole modes control method that the embodiment of the present invention three is provided；
Fig. 6 is the detail flowchart in the embodiment of the present invention three.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, whereby to the present invention how
Application technology means solve technical problem, and reach the implementation process of technique effect and can fully understand and real according to this
Apply.As long as it should be noted that conflict is not constituted, in each embodiment and each embodiment in the present invention
Each feature can be combined with each other, and the technical scheme formed is within protection scope of the present invention.
The embodiment of the present invention provides a kind of double-channel measurement-while-drilling system, including pulse measurement while drilling mode channel and
Electromagnetic measurement while drilling mode channel.
Double-channel measurement-while-drilling system underground emitter is integrated with the well of pulse measurement while drilling and electromagnetic measurement while drilling
Lower transmitter module, the electric interfaces of two kinds of transport modules, mechanical interface, power supply, communication protocol is carried out whole
Close, for the coding of the communication, data processing, signal that complete inserting tube data and modulation, signal transmitting, pattern
The functions such as control, and underground emitter can be configured by communication bus by computer on ground, change transmitting
Argument table used in machine MCU, can also complete the configuration of underground initial operation mode.
The embodiment of the present invention additionally provides the downhole modes control method of above-mentioned double-channel measurement-while-drilling system, the party
Method, which is mainly included between pulse measurement while drilling pattern and electromagnetic measurement while drilling pattern, to be switched.
In double-channel measurement-while-drilling system provided in an embodiment of the present invention, including pulse measurement while drilling mode channel and
Electromagnetic measurement while drilling mode channel, therefore the supporting two kinds of measurement-while-drilling systems of knack are not required to, so as to reduce drilling well
Cost.Also, the embodiment of the present invention additionally provides the downhole modes control method of the double-channel measurement-while-drilling system,
It can be entered according to different well's conditionses and drilling well demand between horizontal pulse measurement while drilling pattern and electromagnetic measurement while drilling pattern
Real-time switching and control, it is not necessary to pull out of hole more exchange device, so as to shorten drilling period, improves production effect
Benefit.
Embodiment one：
It is described in detail in the present embodiment by the process of pulse measurement while drilling pattern switching to electromagnetic measurement while drilling pattern,
As shown in figure 1, the process is specifically included：
S11：The on off state of controlling pump on ground.
By the on off state of ground controlling pump, and constitute specific start-stop pump composite sequence.
S12：Launch the on off state of machine testing pump in underground.
S13：When the on off state of pump meets specific sequence, by pulse measurement while drilling pattern switching to electromagnetism
Measurement while drilling pattern.
Underground emitter MCU is determined after specific sequence, by pulse measurement while drilling patten transformation to electromagnetism with
Measurement pattern is bored, the control function to instrument is realized.
Above-mentioned steps S12 can be realized by two ways.
As shown in Fig. 2 in the first embodiment, being specially：
The vibration acceleration of downhole instrument is detected using acceleration transducer.The vibration of collection X-direction first adds
Speed, then the vibration acceleration of Y direction is gathered, then calculate the value of vibration acceleration.
When vibration acceleration reaches vibration threshold, it is judged to temporarily being in turn on pump state.Furthermore it is also possible to calculate
The duration of turn on pump state, if the duration of turn on pump state is more than sometime threshold value, it can be determined that
For stable turn on pump state.At this point it is possible to Running pump time be calculated, for judging whether it meets in step S13
Specific sequence.
When vibration acceleration is less than vibration threshold, it is judged to temporarily being in termination of pumping state.Furthermore it is also possible to calculate
The duration of termination of pumping state, if the duration of termination of pumping state is more than sometime threshold value, it can be determined that
For stable termination of pumping state.At this point it is possible to the termination of pumping time be calculated, for judging whether it meets in step S13
Specific sequence.
As a preferred scheme, the specific sequence includes turn on pump state at least twice, and wherein opens every time
Pump state is all within the scope of default duration.
In the present embodiment, the specific sequence includes three turn on pump states.Wherein, first time turn on pump state
Default duration scope is 10 to 30 seconds, and the default duration scope of second of turn on pump state is 30 to 50 seconds,
The default duration scope of third time turn on pump state is 10 to 30 seconds.
The start-stop state that underground emitter MCU determines pump meets after the specific sequence, just by schema replacement
Mark position is 1, then by pulse measurement while drilling pattern switching to electromagnetic measurement while drilling pattern.
As shown in figure 3, in second of embodiment, the on off state that pump is detected in step S12 is specially：
Utilize inserting tube detection pipe column pressure and annular pressure.Tubing string pressure value is obtained first, then obtains annular pressure
It is worth, then the difference between computer tube column pressure and annular pressure.
When the difference between tubing string pressure and annular pressure reaches pressure threshold, it is judged to temporarily being in turn on pump shape
State.Furthermore it is also possible to the duration of turn on pump state be calculated, if the duration of turn on pump state is more than a certain
Time threshold, then can be determined that as stable turn on pump state.At this point it is possible to Running pump time be calculated, for step
Judge whether it meets specific sequence in S13.
When the difference between tubing string pressure and annular pressure is less than pressure threshold, it is judged to temporarily being in termination of pumping shape
State.Furthermore it is also possible to the duration of termination of pumping state be calculated, if the duration of termination of pumping state is more than a certain
Time threshold, then can be determined that as stable termination of pumping state.At this point it is possible to the termination of pumping time be calculated, for step
Judge whether it meets specific sequence in S13.
Step S13 afterwards is identical with the first above-mentioned embodiment.Underground emitter MCU determines pump
Start-stop state meets after the specific sequence, is just 1 by schema replacement mark position, then surveys pulse with brill
Pattern switching is measured to electromagnetic measurement while drilling pattern.
It should be noted that the start-stop pump composite sequence in the present embodiment is illustrative only.In other implementations
In mode, it can also be made up of multiple termination of pumping state, or including turn on pump state several times and termination of pumping state.Its
In number of times and each turn on pump state or termination of pumping state duration scope, can be set according to actual needs
Put.
Embodiment two：
It is described in detail in the present embodiment by the process of electromagnetic measurement while drilling pattern switching to pulse measurement while drilling pattern,
As shown in figure 4, the process is specifically included：
S21：The on off state of controlling pump on ground.
By the on off state of ground controlling pump, and constitute specific start-stop pump composite sequence.
S22：Launch the on off state of machine testing pump in underground.
S23：When the on off state of pump meets specific sequence, by electromagnetic measurement while drilling pattern switching to pulse
Measurement while drilling pattern.
Underground emitter MCU is determined after specific sequence, by electromagnetic measurement while drilling patten transformation to pulse with
Measurement pattern is bored, the control function to instrument is realized.
Above-mentioned steps S22 can be realized by two ways, its embodiment and two kinds in embodiment one
Embodiment is essentially identical (reference picture 2, Fig. 3), and it only difference is that final patten transformation, be by
Electromagnetic measurement while drilling patten transformation is to pulse measurement while drilling pattern.
Embodiment three：
It is described in detail in the present embodiment by the another of electromagnetic measurement while drilling pattern switching to pulse measurement while drilling pattern
Implementation is planted, as shown in figure 5, the process is specifically included：
S31：By above-ground launcher electromagnetic signals.
S32：Underground emitter receives and decodes electromagnetic wave signal.
As shown in fig. 6, signal is transmitted to the transmitter module of underground through stratum, underground emitter receives electromagnetism
Ripple signal.Start AD conversion first, then carry out signal gain control, through digital filtering, bandpass filtering,
Signal amplification, demodulation, differential decoding, decoded instruction are judged by MCU.
S33：When electromagnetic wave signal for change mode instruction when, by electromagnetic measurement while drilling pattern switching to pulse with
Bore measurement pattern.
If it is determined that changing mode instruction, then each parameter is disposed as maximum, earthward launches specific
Electromagnetic wave signal, confirms to obtain instruction.Then it is 1 by schema replacement mark position, by electromagnetic measurement while drilling mould
Formula switches to pulse measurement while drilling pattern.
While it is disclosed that embodiment as above, but described content is only to facilitate understand the present invention
And the embodiment used, it is not limited to the present invention.Technology people in any the technical field of the invention
Member, on the premise of spirit and scope disclosed in this invention are not departed from, can implementation formal and details
On make any modification and change, but the scope of patent protection of the present invention still must be with appended claims institute
The scope defined is defined.
Claims (9)
1. a kind of double-channel measurement-while-drilling system, it is characterised in that including pulse measurement while drilling mode channel and
Electromagnetic measurement while drilling mode channel.
2. a kind of downhole modes control method of double-channel measurement-while-drilling system as claimed in claim 1, its
It is characterised by, including：
Switch between pulse measurement while drilling pattern and electromagnetic measurement while drilling pattern.
3. method according to claim 2, it is characterised in that by pulse measurement while drilling pattern switching extremely
During electromagnetic measurement while drilling pattern, specifically include：
The on off state of controlling pump on ground；
Launch the on off state of machine testing pump in underground；
When the on off state of pump meets specific sequence, pulse measurement while drilling pattern switching to electromagnetism is surveyed with brill
Amount pattern.
4. method according to claim 3, it is characterised in that the on off state of the detection pump, tool
Body is：
The vibration acceleration of downhole instrument is detected using acceleration transducer；
When vibration acceleration reaches vibration threshold, it is determined as turn on pump state；When vibration acceleration is less than vibration threshold
During value, it is determined as termination of pumping state.
5. method according to claim 3, it is characterised in that the on off state of the detection pump, tool
Body is：
Utilize inserting tube detection pipe column pressure and annular pressure；
When the difference between tubing string pressure and annular pressure reaches pressure threshold, it is determined as turn on pump state；Work as pipe
When difference between column pressure and annular pressure is less than pressure threshold, it is determined as termination of pumping state.
6. method according to claim 3, it is characterised in that the specific sequence is included at least
Turn on pump state, and wherein each turn on pump state is all within the scope of default duration twice.
7. method according to claim 2, it is characterised in that by electromagnetic measurement while drilling pattern switching extremely
During pulse measurement while drilling pattern, specifically include：
The on off state of controlling pump on ground；
Launch the on off state of machine testing pump in underground；
When the on off state of pump meets specific sequence, electromagnetic measurement while drilling pattern switching to pulse is surveyed with brill
Amount pattern.
8. method according to claim 7, it is characterised in that the specific sequence is included at least
Turn on pump state, and wherein each turn on pump state is all within the scope of default duration twice.
9. method according to claim 2, it is characterised in that by electromagnetic measurement while drilling pattern switching extremely
During pulse measurement while drilling pattern, specifically include：
By above-ground launcher electromagnetic signals；
Underground emitter receives and decodes electromagnetic wave signal；
When electromagnetic wave signal is change mode instruction, by electromagnetic measurement while drilling pattern switching to pulse measurement while drilling
Pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610146975.4A CN107201897A (en) | 2016-03-15 | 2016-03-15 | Double-channel measurement-while-drilling system and its downhole modes control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610146975.4A CN107201897A (en) | 2016-03-15 | 2016-03-15 | Double-channel measurement-while-drilling system and its downhole modes control method |
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| Publication Number | Publication Date |
|---|---|
| CN107201897A true CN107201897A (en) | 2017-09-26 |
Family
ID=59903511
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610146975.4A Pending CN107201897A (en) | 2016-03-15 | 2016-03-15 | Double-channel measurement-while-drilling system and its downhole modes control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111206915A (en) * | 2018-11-01 | 2020-05-29 | 中国石油化工股份有限公司 | Underground while-drilling center control platform |
| CN111411944A (en) * | 2020-04-27 | 2020-07-14 | 无锡量子感知研究所 | Nuclear magnetic resonance logging while drilling instrument and working mode control method and system thereof |
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| WO2015192224A1 (en) * | 2014-06-18 | 2015-12-23 | Evolution Engineering Inc. | Mud motor with integrated mwd system |
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| CN1891977A (en) * | 2005-07-05 | 2007-01-10 | 普拉德研究及开发股份有限公司 | Wellbore telemetry system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111206915A (en) * | 2018-11-01 | 2020-05-29 | 中国石油化工股份有限公司 | Underground while-drilling center control platform |
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Application publication date: 20170926 |