CN108442926A - A kind of nearly drill bit electromagnetic resistivity adds gamma ray logger - Google Patents
A kind of nearly drill bit electromagnetic resistivity adds gamma ray logger Download PDFInfo
- Publication number
- CN108442926A CN108442926A CN201810576604.9A CN201810576604A CN108442926A CN 108442926 A CN108442926 A CN 108442926A CN 201810576604 A CN201810576604 A CN 201810576604A CN 108442926 A CN108442926 A CN 108442926A
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- electromagnetic
- drill bit
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- 230000005251 gamma ray Effects 0.000 title claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 230000005484 gravity Effects 0.000 claims abstract description 10
- 238000005259 measurement Methods 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims abstract description 7
- 230000003321 amplification Effects 0.000 claims abstract description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 230000005670 electromagnetic radiation Effects 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 8
- 238000005553 drilling Methods 0.000 abstract description 7
- 238000001730 gamma-ray spectroscopy Methods 0.000 abstract 1
- 238000011835 investigation Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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 OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geophysics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a kind of nearly drill bit electromagnetic resistivities to add gamma ray logger, the instrument includes transmitting section and reception section, transmitting section includes gamma detector, gravity sensor, radiating circuit unit, electromagnetic wave launcher, transmitting antenna, and it includes reception antenna, receiving circuit unit and resistivity logging while drilling to receive section（EPR）With with bore orientation electromagnetic resistivity（AER）Electromagnetic wave signal, which is emitted after power amplification by transmitting antenna, to be exported, two reception antennas of resistivity logging while drilling receive electromagnetic wave signal by down-hole formation, being exported by transmitting antenna, and the signal differential is amplified, bandpass filtering, it is converted to send to digital signal processing unit after digital signal and be handled, gamma signal uses wireless electromagnetic transmission mode, media using drill collar as transmission telecommunications number complete the short range wireless transmission of information, nearly drill bit gamma-spectrometry can be provided, it is close with drill bit distance, it is accurate to measure, measurement reservoir boundaries that can be earlier.
Description
Technical field
Nearly drill bit electromagnetic resistivity of the present invention adds gamma ray logger, is applied to petroleum geology exploration with brill
Logger equipment is analyzed more particularly to geographical space geosteering, is especially to emit electromagnetic wave close to bit location,
So that the reception antenna at screw rod rear is received the signal, is measured to carry out remote phase difference and damping resistance rate.This
Product and drill bit distance are close, grasp formation information that can be promptly and accurately, optimize well track.Nearly drill bit gamma and resistance simultaneously
Rate, which measures, shares same transmitting antenna, optimizes structure design, and instrument utilization rate higher saves cost.
Background technology
It is excellent in order to better, grasp formation information promptly and accurately currently in the drilling engineerings such as petroleum geology exploration
Change well track, improve the rate of oil and gas recovery, wellbore trace is made more accurately to be crept into according to engineering design requirements, it is necessary to acquisition
The sensor probe of formation information is mounted on as close to the position of drill bit.In complicated stratum, optimize well track face
Face significant challenge.If only relying on the log data in earthquake and wellbore, it is difficult to determine oil reservoir top and bottom boundary.This is not only
Nonproductive time can be increased, it is also possible to best oil-gas Layer can not be drilled into, to which best exploitation effect can not be obtained.
Similar product mostly uses multiple double receipts structures of symmetric form currently on the market, is situated between in stratum conduction using electromagnetic wave
Phase difference is generated when matter is propagated and amplitude fading carrys out Formation Resistivity Measurement, it provides two kinds of measurements：Phase difference（PD）And decaying
（AT）.Using two frequencies：2MHz and 400 kHz.Compensation Design function is mostly used, multiple investigation depths are provided.It determines many
Drilling/nearly borehole features, such as：Rmud, Rxo, well size and eccentricity etc..
It has a disadvantage in that：
1, radius of investigation is small, farthest only 2 to 3 meters, geosteering can only interpretive analysis near wellbore formation information；
2, do not have azimuth characteristic.It cannot determine in real time close to the orientation of bed boundary, shale or other hard can not be avoided enter into
Stratum.
Invention content
Nearly drill bit electromagnetic resistivity in the present invention（EPR）, with bore orientation electromagnetic resistivity (AER), nearly drill bit gamma
（NGR）Be used in combination, can by non-directional and orientation deep investigation resistivity measurement, real-time detection reservoir configuration and stratigraphic boundary,
Optimize well track, improves the rate of oil and gas recovery.Meanwhile nearly drill bit electromagnetic resistivity is combined with azimuthal resistivity, this skill
Art may detect the boundary for having an area of 30m around pit shaft.This investigation depth can provide a clearly reservoir configuration visual field, geology
The interpretive analysis of guiding has also been expanded to seismic prospecting rank near nearly well.This is carried for real-time well site deployment and oil reservoir description
New possibility is supplied.
The technical solution adopted in the present invention is：
A kind of nearly drill bit electromagnetic resistivity adds gamma ray logger, includes mainly transmitting module and receiving module, wherein transmitting mould
Block includes transmitting abridged edition body, emits and is equipped with gamma detector, gravity sensor, control circuit list in the unit with grooves in outer wall of abridged edition body
Member, electromagnetic radiation unit, transmitting antenna, transmitting economize on electricity source, gamma detector, gravity sensor detection signal end difference
It is connect with the collection terminal of control circuit unit, the output end of control circuit unit is via electromagnetic radiation unit and transmitting antenna
Terminals connect, and transmitting module power supply is gamma detector, gravity sensor, circuit control unit, the confession of electromagnetic radiation unit
Electricity；
Reception section includes receiving ontology, and it includes nearly bit resistivity reception antenna one, the reception of nearly bit resistivity to receive section antenna
Antenna two, nearly drill bit gamma reception antenna and gamma signal amplification circuit unit, with electricity between reception antenna and transmitting antenna
Magnetostatic wave signal communicates wirelessly, and the terminals of reception antenna are connected by radio-frequency cable with electromagnetic receiving device, by putting
Big unit, bandpass filtering unit, A/D converting units, digital signal processing unit processing after through mud-pulse be transferred to ground.
Nearly bit resistivity reception antenna one and nearly bit resistivity reception antenna two are located at nearly drill bit gamma antenna
Lower end and nearly bit resistivity module and nearly bit orientation electromagnetic resistivity module between.
Nearly drill bit gamma signal shares same transmitting transmission data with resistivity measurement, and gamma signal is passed using wireless electromagnetic
Defeated mode, media using drill collar as transmission telecommunications number complete the short range wireless transmission of information, and number is communicated twice in gamma
The electromagnetic wave signal transmission of resistivity is measured between.
Beneficial effects of the present invention：
1, nearly bit resistivity and nearly drill bit gamma share same transmitting, optimize structure design, and instrument utilization rate higher is saved
Cost；
2, the present invention is arranged close to the position of drill bit, can preferably, grasp formation information promptly and accurately, optimize wellbore rail
Mark improves the rate of oil and gas recovery, wellbore trace is made more accurately to be crept into according to engineering design requirements；
3, using low frequency measurement（Electromagnetic signal）, there is deeper investigation depth.It is used in combination with EPR, AER, there is orientation
Sensibility, ultra-deep investigation depth, in real time with bore inverting, 3D visualization etc., will easily realize Complex Reservoir in casing programme essence
Quasi- design；
4, the geosteering service is combined by non-directional and orientation deep investigation resistivity measurement, real-time detection reservoir configuration and
Stratigraphic boundary optimizes well track, improves the rate of oil and gas recovery.The reality to oil reservoir boundary can be realized without taking the neck eye expended
When draw, determine the structure of oil reservoir；
5, oil reservoir is oriented to the range explained from pit shaft scale expansion to seismic prospecting scale.This is real-time well location subordinate and oil reservoir
Description provides new possibility.
Description of the drawings
Fig. 1 is the nearly drill bit transmitting module sectional structure chart of the present invention；
Fig. 2 is the nearly drill bit transmitting module A-A sectional views of the present invention；
Fig. 3 is the receiving module schematic diagram of the present invention；
Fig. 4 is the system functional block diagram of the present invention；
Fig. 5 is the signal operating diagram of the present invention.
Specific implementation mode
As shown in Figure 1, Figure 2, Figure 3, Figure 4, nearly drill bit electromagnetic resistivity adds gamma ray logger to include transmitting module and reception mould
Block, wherein：
Transmitting module includes transmitting abridged edition body 7, and gamma detector 21, gravity sensitive are equipped in the unit with grooves in outer wall of transmitting abridged edition body 7
Device 22, control circuit unit 23, electromagnetic radiation unit 24, transmitting antenna 25, transmitting module power supply 2, gamma detector 21,
The detection signal end of gravity sensor 22 is connect with the collection terminal of control circuit unit 23 respectively, the output of control circuit unit 23
End is connect via electromagnetic radiation unit 24 with the terminals of transmitting antenna 25, and transmitting module power supply is gamma detector 21, again
Force snesor 22, control circuit unit 23, electromagnetic radiation unit 24 are powered.
Gamma detector 21, gravity sensor 22 detect signal and are transmitted through the cable to radiating circuit unit 23, through data tune
Unit 241 processed, power amplification unit 242 are transmitted through the cable to transmitting antenna 25 after being modulated and amplify respectively, by electromagnetism
Wave transmits signals to reception antenna 26, and electromagnetic radiation unit 24 includes data modulation unit 241, power amplification unit 242, electricity
Magnetic wave transmitter unit 24 is mounted in transmitting nipple body 7, multiturn coil group of the transmitting antenna 25 by coiling on the insulating material
At being equipped with transmitting antenna oversheath 8 in the outside of transmitting antenna 25, radiating circuit unit 23 passes through electromagnetic radiation unit 24
It is connected with transmitting antenna 25.
Oscillator in radiating circuit data modulation unit 241 generates an electromagnetic wave signal, and the signal is through power amplification
Unit 242 sends transmitting antenna 25 to after amplifying, and is sent signal by transmitting antenna 25, while the signal is also used as gamma
The CF signal of signal thereby realizes same transmitting and realizes two kinds of different function, as shown in Figure 5.
Nearly drill bit transmitting module is as the transmitting of nearly drill bit gamma and the transmitting of nearly bit resistivity, for emitting electromagnetic wave,
The gamma signal at nearly drill bit is received at nearly drill bit gamma reception antenna 263, to measure nearly drill bit gamma signal, gamma letter
Number using wireless electromagnetic transmission mode, media using drill collar as transmission telecommunications number complete the short range wireless transmission of information,
Resistivity signal wave transmission is carried out between gamma twice communication data.
AC signal driving transmitting coil operating in transmitting antenna coil, thus generates alternating magnetic field, magnetic in reservoir
Field generates eddy current in conductive rock stratum, regenerates a secondary magnetic field, and is received coil reception, what receiving coil detected
Signal contains the reservoir information that initial signal is passed through and used loop construction information.
Nearly bit resistivity reception antenna 1 and nearly bit resistivity reception antenna 2 262 are surveyed for nearly bit resistivity
The reception antenna of well instrument 260 is located at lower end and the nearly bit resistivity module 260 and close of nearly drill bit gamma antenna 263
Between bit orientation electromagnetic resistivity module 265.Instrument receives data and is constantly in comprehensive scanning pattern, i.e., in transmitting day
Line 25 emitted in the signal period, and receiving coil receives signal and is sent to receiving circuit and handled.
In receiving portion, reception antenna unit 26 connects including nearly bit resistivity reception antenna 1, nearly bit resistivity
Receive antenna 2 262, nearly drill bit gamma reception antenna 263, three reception antennas are the ring bodies made of magnetic material, on ring around
There are conducting wire, the line end of conducting wire to be connected with frequency selection circuit, frequency selection circuit accesses receiving circuit unit 27 by radio-frequency cable, wherein connecing
Receive amplifying unit 271, bandpass filtering unit 272, A/D converting units 273, the digital signal processing unit in circuit unit 27
After 274 each section processing of circuit ground 30 is transferred to through mud-pulse.
The features of the present invention is：
1, the present invention has the investigation depth of ultra-deep, can be combined with azimuthal resistivity, realizes the real-time rendering to oil reservoir boundary,
It determines the structure of oil reservoir, adjusts well track, improve reservoir Drilling ratio, eye is led in saving, reduces drilling depth operating expenses.Geosteering
Interpretive analysis be also expanded to seismic prospecting rank, this for real-time well site deployment and oil reservoir description provide new possibility
Property；
2, the present invention can show reservoir formation feature in real time, and geologist can be helped to make correct strategic decision, carried
Height increases effective drilling depth of High-quality Reservoir section, and then improve oil and gas production to the awareness of reservoir.
The above is presently preferred embodiments of the present invention and its technical principle used, for those skilled in the art
For, without departing from the spirit and scope of the present invention, any equivalent change based on the basis of technical solution of the present invention
Change, simple replacement etc. is obvious changes, all fall within the protection scope of the present invention.
Claims (3)
1. a kind of nearly drill bit electromagnetic resistivity adds gamma ray logger, it is characterised in that：It includes transmitting module and receiving module,
Wherein：
Transmitting module includes transmitting abridged edition body, emits and is equipped with gamma detector, gravity sensor, control in the unit with grooves in outer wall of abridged edition body
Circuit unit processed, electromagnetic radiation unit, transmitting antenna, transmitting economize on electricity source, gamma detector, gravity sensor detection letter
Number end is connect with the collection terminal of control circuit unit respectively, and the output end of control circuit unit is via electromagnetic radiation unit and hair
The terminals connection of antenna is penetrated, transmitting module power supply is gamma detector, gravity sensor, circuit control unit, electromagnetic wave hair
Penetrate unit power supply；
Reception section includes receiving ontology, and it includes nearly bit resistivity reception antenna one, the reception of nearly bit resistivity to receive section antenna
Antenna two, nearly drill bit gamma reception antenna and gamma signal amplification circuit unit, with electricity between reception antenna and transmitting antenna
Magnetostatic wave signal communicates wirelessly, and the terminals of reception antenna are connected by radio-frequency cable with electromagnetic receiving device, by putting
Big unit, bandpass filtering unit, A/D converting units, digital signal processing unit processing after through mud-pulse be transferred to ground.
2. nearly drill bit electromagnetic resistivity according to claim 1 adds gamma ray logger, nearly bit resistivity reception antenna
One and nearly bit resistivity reception antenna two be located at nearly drill bit gamma antenna lower end and nearly bit resistivity module and
Between nearly bit orientation electromagnetic resistivity module.
3. nearly drill bit electromagnetic resistivity according to claim 1 adds gamma ray logger, which is characterized in that nearly drill bit gamma
Signal and resistivity measurement share same transmitting transmission data, gamma signal using wireless electromagnetic transmission mode, using drill collar as
The media of transmission telecommunications number complete the short range wireless transmission of information, between gamma twice communication data measure resistance
The electromagnetic wave signal of rate transmits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810576604.9A CN108442926A (en) | 2018-06-05 | 2018-06-05 | A kind of nearly drill bit electromagnetic resistivity adds gamma ray logger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810576604.9A CN108442926A (en) | 2018-06-05 | 2018-06-05 | A kind of nearly drill bit electromagnetic resistivity adds gamma ray logger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108442926A true CN108442926A (en) | 2018-08-24 |
Family
ID=63206615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810576604.9A Withdrawn CN108442926A (en) | 2018-06-05 | 2018-06-05 | A kind of nearly drill bit electromagnetic resistivity adds gamma ray logger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108442926A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322662A (en) * | 2018-12-05 | 2019-02-12 | 贝兹维仪器(苏州)有限公司 | A kind of measurement while drilling pipe nipple |
| CN110344823A (en) * | 2019-06-19 | 2019-10-18 | 中国石油天然气集团有限公司 | It is a kind of based on rotary steerable tool with bore gamma resistivity imaging tool device |
| CN114320281A (en) * | 2021-12-30 | 2022-04-12 | 大庆随钻科技有限公司 | Near-bit while-drilling azimuth resistivity and azimuth gamma measuring device |
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| CN1657743A (en) * | 2004-02-16 | 2005-08-24 | 中国石油勘探开发研究院钻井工艺研究所 | Method and device for measuring resistivity by device near bit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114320281A (en) * | 2021-12-30 | 2022-04-12 | 大庆随钻科技有限公司 | Near-bit while-drilling azimuth resistivity and azimuth gamma measuring device |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180824 |
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| WW01 | Invention patent application withdrawn after publication |