CN208310758U - 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
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- CN208310758U CN208310758U CN201820861803.XU CN201820861803U CN208310758U CN 208310758 U CN208310758 U CN 208310758U CN 201820861803 U CN201820861803 U CN 201820861803U CN 208310758 U CN208310758 U CN 208310758U
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Abstract
The utility model 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, transmit circuit unit, electromagnetic wave launcher, transmitting antenna, receiving section includes receiving antenna, receiving circuit unit, resistivity logging while drilling (EPR) and with bore orientation electromagnetic resistivity (AER), electromagnetic wave signal, which is emitted after power amplification by transmitting antenna, to be exported, two resistivity logging while drilling receiving antennas are received through down-hole formation, the electromagnetic wave signal 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, It can provide nearly drill bit gamma-spectrometry, close with drill bit distance, measurement is accurate, can measurement reservoir boundaries earlier.
Description
Technical field
The utility model relates to nearly drill bit electromagnetic resistivity add gamma ray logger, be applied to petroleum geology exploration
Connector for logging while drilling equipment is analyzed more particularly to geographical space geosteering, is especially close to bit location transmitting electricity
Magnetic wave enables the receiving antenna at screw rod rear to receive the signal, to carry out remote phase difference and the survey of damping resistance rate
Amount.This product and drill bit distance are close, can grasp formation information promptly and accurately, optimize well track.Nearly drill bit gamma simultaneously
Same transmitting antenna is shared with resistivity measurement, optimizes structure design, instrument utilization rate is higher, saves cost.
Background technique
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, creep into wellbore trace more accurately 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
It will increase nonproductive time, it is also possible to best oil-gas Layer can not be drilled into, so that 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 using electromagnetic wave in stratum conduction
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.Cannot determine the orientation close to bed boundary in real time, not can avoid into shale or its
Its hard formation.
Summary of the invention
Nearly drill bit electromagnetic resistivity (EPR) in the utility model, with boring orientation electromagnetic resistivity (AER), nearly drill bit
Gamma (NGR) is used in combination, and can pass through non-directional and orientation deep investigation resistivity measurement, real-time detection reservoir configuration and stratum side
Boundary optimizes well track, improves the rate of oil and gas recovery.Meanwhile nearly drill bit electromagnetic resistivity is combined with azimuthal resistivity, this
Technology may detect the boundary for having an area of 30m around pit shaft.This investigation depth can provide a clearly reservoir configuration visual field, ground
The interpretive analysis of matter guiding has also been expanded to seismic prospecting rank near nearly well.This describes for real-time well site deployment and oil reservoir
Provide a possibility that new.
The technology employed by the present utility model is
A kind of nearly drill bit electromagnetic resistivity adds gamma ray logger, mainly includes transmitting module and receiving module, wherein hair
Penetrating module includes transmitting abridged edition body, emits and is equipped with gamma detector, gravity sensor, control circuit in the unit with grooves in outer wall of abridged edition body
Unit, electromagnetic radiation unit, transmitting antenna, transmitting economize on electricity source, the detection signal end point of gamma detector, gravity sensor
It is not 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 connection, transmitting module power supply be gamma detector, gravity sensor, circuit control unit, electromagnetic radiation unit
Power supply；
Receiving section includes receiving ontology, and receiving section antenna includes nearly bit resistivity receiving antenna one, nearly bit resistivity
Receiving antenna two, nearly drill bit gamma receiving antenna and gamma signal amplification circuit unit, between receiving antenna and transmitting antenna
It is communicated wirelessly with electromagnetic wave signal, the terminals of receiving antenna are connected by radio-frequency cable with electromagnetic receiving device, are passed through
Cross amplifying unit, bandpass filtering unit, A/D converting unit, digital signal processing unit processing after be transferred to through mud-pulse
Ground.
Nearly bit resistivity receiving antenna one and nearly bit resistivity receiving 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 and resistivity measurement share same transmitting transmission data, 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, communicate number twice in gamma
The electromagnetic wave signal transmission of resistivity is measured between.
The utility model has the beneficial effects that
1, nearly bit resistivity and nearly drill bit gamma share same transmitting, optimize structure design, and instrument utilization rate is higher,
Save cost；
2, the utility model is arranged close to the position of drill bit, can preferably, grasp formation information promptly and accurately, optimization
Well track improves the rate of oil and gas recovery, creeps into wellbore trace more accurately according to engineering design requirements；
3, using low frequency measurement (electromagnetic signal), there is deeper investigation depth.It is used in combination, has with EPR, AER
Azimuthal sensitivity, ultra-deep investigation depth, in real time with bore inverting, 3D visualization etc., will easily realize casing programme in Complex Reservoir
Precise spraying；
4, the geosteering service is combined by non-directional and orientation deep investigation resistivity measurement, real-time detection oil reservoir knot
Structure and stratigraphic boundary optimize well track, improve the rate of oil and gas recovery.The neck eye expended without time-consuming can be realized to oil reservoir boundary
Real-time rendering, determine the structure of oil reservoir；
5, the range that oil reservoir guiding is explained is from pit shaft scale expansion to seismic prospecting scale.This for real-time well location subordinate and
Oil reservoir description provides a possibility that new.
Detailed description of the invention
Fig. 1 is the nearly drill bit transmitting module sectional structure chart of the utility model；
Fig. 2 is the nearly drill bit transmitting module A-A sectional view of the utility model；
Fig. 3 is the receiving module schematic diagram of the utility model；
Fig. 4 is the system functional block diagram of the utility model；
Fig. 5 is the signal operation schematic diagram of the utility model.
Specific embodiment
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 connect
Receive module, in which:
Transmitting module includes transmitting abridged edition body 7, emits and is equipped with gamma detector 21, gravity in the unit with grooves in outer wall of abridged edition body 7
Sensor 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, control circuit unit 23
Output end is connect via electromagnetic radiation unit 24 with the terminals of transmitting antenna 25, and transmitting module power supply is gamma detector
21, gravity sensor 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 transmit circuit unit 23, through number
It is transmitted through the cable to transmitting antenna 25 after being modulated and amplify respectively according to modulation unit 241, power amplification unit 242, by
For electromagnetic transmission signal to receiving antenna 26, electromagnetic radiation unit 24 includes data modulation unit 241, power amplification unit
242, electromagnetic radiation unit 24 is mounted in transmitting nipple body 7, multiturn of the transmitting antenna 25 by coiling on the insulating material
Coil composition, is equipped with transmitting antenna oversheath 8 in the outside of transmitting antenna 25, transmit circuit unit 23 passes through electromagnetic radiation
Unit 24 is connected with transmitting antenna 25.
Oscillator in transmit 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 receiving 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,
The transmission of resistivity signal wave 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 receiving antenna 1 and nearly bit resistivity receiving antenna 2 262 are the survey of nearly bit resistivity
The receiving 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 mode, i.e., in transmitting day
Line 25 emitted in the signal period, and receiving coil receives signal and is sent to reception circuit and handled.
In receiving portion, receiving antenna unit 26 connects including nearly bit resistivity receiving antenna 1, nearly bit resistivity
Receive antenna 2 262, nearly drill bit gamma receiving antenna 263, three receiving antennas are the ring bodies made of magnetic material, on ring around
There is conducting wire, the line end of conducting wire is connected with frequency selection circuit, and frequency selection circuit accesses receiving circuit unit 27 by radio-frequency cable, wherein connecing
Receive amplifying unit 271, the bandpass filtering unit 272, A/D converting unit 273, digital signal processing unit in circuit unit 27
Ground 30 is transferred to through mud-pulse after 274 each section processing of circuit.
The characteristics of the utility model are as follows:
1, the utility model has the investigation depth of ultra-deep, can combine with azimuthal resistivity, realizes to oil reservoir boundary
Real-time rendering determines the structure of oil reservoir, adjusts well track, improves reservoir Drilling ratio, and eye is led in saving, reduces drilling depth construction cost
With.The interpretive analysis of geosteering has also been expanded to seismic prospecting rank, this is provided for real-time well site deployment and oil reservoir description
A possibility that new；
2, the utility model can show reservoir formation feature in real time, and geologist can be helped to make correct strategy
Decision improves the awareness to reservoir, increases effective drilling depth of High-quality Reservoir section, and then improve oil and gas production.
The above is the preferred embodiment of the utility model and its technical principle used, for the technology of this field
It is any to be based on technical solutions of the utility model base without departing substantially from the spirit and scope of the utility model for personnel
Equivalent transformation, simple replacement on plinth etc. obviously change, and belong within scope of protection of the utility model.
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, the detection letter of gamma detector, gravity sensor
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；
It receives and saves including receiving ontology, receiving section antenna includes nearly bit resistivity receiving antenna one, the reception of nearly bit resistivity
Antenna two, nearly drill bit gamma receiving antenna and gamma signal amplification circuit unit, with electricity between receiving antenna and transmitting antenna
Magnetostatic wave signal communicates wirelessly, and the terminals of receiving antenna are connected by radio-frequency cable with electromagnetic receiving device, through over-discharge
Big unit, bandpass filtering unit, A/D converting unit, 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, which is characterized in that nearly drill bit resistance
Rate receiving antenna one and nearly bit resistivity receiving antenna two are located at lower end and the nearly drill bit electricity of nearly drill bit gamma antenna
Between resistance rate module and 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, measure resistance between gamma twice communication data
The electromagnetic wave signal of rate transmits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820861803.XU CN208310758U (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 |
|---|---|---|---|
| CN201820861803.XU CN208310758U (en) | 2018-06-05 | 2018-06-05 | A kind of nearly drill bit electromagnetic resistivity adds gamma ray logger |
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| Publication Number | Publication Date |
|---|---|
| CN208310758U true CN208310758U (en) | 2019-01-01 |
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| CN201820861803.XU Active CN208310758U (en) | 2018-06-05 | 2018-06-05 | A kind of nearly drill bit electromagnetic resistivity adds gamma ray logger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108442926A (en) * | 2018-06-05 | 2018-08-24 | 北京捷威思特科技有限公司 | A kind of nearly drill bit electromagnetic resistivity adds gamma ray logger |
| 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 |
-
2018
- 2018-06-05 CN CN201820861803.XU patent/CN208310758U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108442926A (en) * | 2018-06-05 | 2018-08-24 | 北京捷威思特科技有限公司 | A kind of nearly drill bit electromagnetic resistivity adds gamma ray logger |
| 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 |
| CN110344823B (en) * | 2019-06-19 | 2023-04-07 | 中国石油天然气集团有限公司 | While-drilling gamma resistivity imaging logging instrument based on rotary steering tool |
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