CN203655274U - While-drilling boundary detection device using high-frequency magnetometer - Google Patents
While-drilling boundary detection device using high-frequency magnetometer Download PDFInfo
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- CN203655274U CN203655274U CN201320838040.4U CN201320838040U CN203655274U CN 203655274 U CN203655274 U CN 203655274U CN 201320838040 U CN201320838040 U CN 201320838040U CN 203655274 U CN203655274 U CN 203655274U
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Abstract
The utility model provides a while-drilling boundary detection device using a high-frequency magnetometer. The device comprises a cylindrical tool main body, wherein an emitter and a receiver are arranged on the tool main body; the emitter is a coil antenna; the receiver is a magnetometer; the magnetometer has high sensitivity, and can independently measure each component of magnetic fields; the precision of measured data is high; the later signal processing is convenient; in addition, the size of the magnetometer is smaller than the size of the traditional coil antenna, so that the mounting and use of the magnetometer on a drilling tool are convenient.
Description
Technical field
The utility model relates to logging while drilling technology field, and more specifically, the utility model relates to boring frontier probe device.
Background technology
DRILLING APPLICATION (such as well logging during (LWD), measurement while drilling (MWD), wireline logging application etc.) determines that with electrical measurement the electrology characteristic on stratum around of holing is known, and the resistivity (or electrical conductivity) that these drilling rigs record can be understood as the rock physical property that utilizes various petrophysical models (for example Archie ' s Law) to come definite wherein stratum and liquid.For example, the high resistivity on high-voidage stratum is usually indicating the existence of hydrocarbon, as former oil and gas, and normally water saturation district of the low-resistivity on high-voidage stratum.Still often be used alternatingly in the art although term resistivity and electrical conductivity are contrary in the meaning, mention that one of them or another one are for convenience here, rather than have a mind to limit.
With the investigation depth of boring frontier probe device along with the increase of measuring frequency reduces, conventionally the radio wave frequency adopting with brill frontier probe device is from 100 KHzs to several megahertzes, traditional magnetometer can only be used for the measurement of stationary magnetic field (as earth's magnetic field) or low frequency magnetic field, along with scientific and technical fast development, high frequency magnetometer become a reality gradually (for example US 2008/0106201, US 2010/0289491).
At present, horizontal well becomes the main flow well type of oil field development gradually, and it needs drilling tool to remain in oil reservoir to advance, realize as far as possible recovery ratio to greatest extent.Carry out stratigraphic boundary measurement so need a kind of effectively sniffer and method, in prior art, be coil antenna with the Receiver And Transmitter that bores the employing of frontier probe device, its sensitivity is not high, can not measure independently multiple components in magnetic field, measure data precision is low and be not easy to the signal processing in later stage, and size is unfavorable for greatly installing and using on drilling tool.
Utility model content
For this reason, technical problem to be solved in the utility model is to improve the sensitivity with boring receiver in frontier probe device, reduces the size of receiver, utilizes high frequency magnetometer with boring frontier probe device thereby propose one.
For solving the problems of the technologies described above, of the present utility modelly provide following technical scheme:
One utilizes high frequency magnetometer with boring frontier probe device, comprising: tool body cylindraceous, and described tool body deploy transmitter and receiver, described emitter is coil antenna, described receiver is magnetometer.
The above-mentioned high frequency magnetometer that utilizes is with boring frontier probe device, and the transmission of electromagnetic signals polarised direction of described coil antenna can be parallel with tool body axis direction.
The above-mentioned high frequency magnetometer that utilizes is with boring frontier probe device, and described magnetometer receives and measure the magnetic-field component from described emitter.
The above-mentioned high frequency magnetometer that utilizes is with boring frontier probe device, and described receiver can be that single magnetometer or multiple magnetometer form array acceptor.
The above-mentioned high frequency magnetometer that utilizes is with boring frontier probe device, and described magnetometer can be operated in stilling the theatre and arrive the frequency band of frequency up to 10 megahertzes.
Technique scheme of the present utility model has the following advantages compared to existing technology,
(1) the high frequency magnetometer that utilizes described in the utility model is with boring frontier probe device, adopt magnetometer as the receiver with boring frontier probe device, compared with traditional coil antenna, magnetometer can be measured each component in magnetic field independently, can simplify follow-up signal handler, and can improve data precision, in addition, the size of magnetometer is less than the size of conventional coil antenna, is so just conducive to installing and using on drilling tool.
(2) the high frequency magnetometer that utilizes described in the utility model is with boring frontier probe device, survey on tool body and can dispose single magnetometer as receiver with probing, also can dispose multiple magnetometers and form array acceptor, dispose when multiple magnetometers form array acceptor and can receive how believable formation information, further improve the certainty of measurement on border.
(3) the high frequency magnetometer that utilizes described in the utility model is with boring frontier probe device, magnetometer can be operated in stilling the theatre and arrive the frequency band of frequency up to 10 megahertzes, magnetometer generally all adopts radio wave (from 100 KHzs to several megahertzes) with boring frontier probe device, so can meet this operating frequency.
Accompanying drawing explanation
For content of the present utility model is more likely to be clearly understood, according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 be an embodiment of the utility model utilize high frequency magnetometer with the overall schematic of boring frontier probe mounted cast 500;
Fig. 2 be an embodiment of the utility model utilize high frequency magnetometer with boring signal amplitude that in frontier probe mounted cast 500, receiver receives and the graph of relation simulation result of the frontier probe device anglec of rotation;
Fig. 3 be an embodiment of the utility model utilize high frequency magnetometer with boring signal amplitude that in frontier probe mounted cast 500, receiver receives and the graph of relation simulation result of frontier distance.
In figure, Reference numeral is expressed as: 200-tool body, 202-emitter, 208-receiver, 500-frontier probe mounted cast, 502-stratigraphic boundary, 504-the first stratum, 506-the second stratum, 602-exist boundary curve, 604-not to have boundary curve.
The specific embodiment
Fig. 1 represents to utilize high frequency magnetometer with the overall schematic of boring frontier probe mounted cast 500, model 500 comprises the first stratum 504, the second stratum 506 and the stratigraphic boundary 502 between the first stratum 504 and the second stratum 506, tool body 200, put into the second stratum 506, tool body 200 deploy emitters 202 and receiver 208, emitter 202 is coil antenna, receiver 208 is magnetometer, a coordinate system (x relevant to tool body 200, y, z), the longitudinal axis direction of tool body 200 is defined as current coordinate system (x, y, z) z axle, the surface on border 502 and z-y plane almost parallel, tool body 200 is put into the second stratum 506 conduct parallel with z axle and is measured at first.
Emitter 202 transmission of electromagnetic signals, tool body, around self an axis rotation complete cycle (0-360 degree), obtains the x component electromagnetic signal of responding on described magnetometer.Fig. 2 represents the signal amplitude of magnetic field x component and the graph of relation of the tool body anglec of rotation that receiver receives, sinusoidal wave 602 represent: when the first stratum 504 and the second stratum 506 resistivity different and between them, have in the situation on a border 502, in a complete cycle (0-360 degree) of well logging during instrument rotation, the x component electromagnetic signal that the magnetometer recording from the counter clockwise direction of positive x axle is responded to, article one, near linear 604 represents, when the first stratum 504 and the second stratum 506 resistivity much the same and between them, do not have in the situation of stratigraphic boundary 502 (being similar stratum), in a complete cycle (0-360 degree) of well logging during instrument rotation, the x component electromagnetic signal that the magnetometer recording from the counter clockwise direction of positive x axle is responded to.So sinusoidal wave 602 existence can show that, with there being stratigraphic boundary 502 near drill tools, the existence of near linear 604 shows with there not being stratigraphic boundary 502 near drill tools.
Fig. 3 represents to utilize high frequency magnetometer with boring signal amplitude that in frontier probe mounted cast 500, receiver 208 receives and the graph of relation simulation result of stratigraphic boundary 502 distances, the resistivity on the x component that near stratigraphic boundary positional information drilling tool can receive by receiver 208 or the amplitude of y component electromagnetic signal and phase relation and the surrounding stratum that calculates by frontier probe instrument, dielectric constant and permeability are calculated, correspondingly, the amplitude (signal voltage) of the electromagnetic signal that the position (tool body 200 and stratigraphic boundary 502 direct ranges) of stratigraphic boundary 502 can record according to receiver, the resistivity on 502 stratum, both sides, stratigraphic boundary, the function of dielectric constant and permeability is derived, as follows:
d＝f(Vmax,R1,R2,ε1,ε2,μ1,μ2)
Wherein, d is the distance between tool body 200 and stratigraphic boundary 502; Vmax is the maximum voltage that receiver records electromagnetic signal; R1 and R2 are respectively the resistivity on 502 stratum, both sides, stratigraphic boundary; ε 1 and ε 2 are respectively the dielectric constant on 502 stratum, both sides, stratigraphic boundary; μ 1 and μ 2 are respectively the permeability on 502 stratum, both sides, stratigraphic boundary.
If there are three or three near a certain stratigraphic boundary 502, with overlying strata, above-mentioned equation may require multiple variablees, because whole computational process can relate to the information such as multiple resistivity, dielectric constant and permeability.
But if the frequency of electromagnetic signal is low frequency, the resistivity on two stratum can be for determining the distance between tool body 200 and stratigraphic boundary 502, correspondingly, while operation under low frequency, above-mentioned equation can be reduced to:
d＝f(Vmax,R1,R2)
Can be in advance for ceiling voltage be adjacent to layer resistivity, set up a graph of relation as shown in Figure 3 by tool body 200 emulation in model 500, the ceiling voltage that receiver 208 records can be used as input data, and tool body 200 can draw by derivation to the distance between stratigraphic boundary 502.
Can dispose magnetometer as receiver with boring on frontier probe device tool body, also can dispose multiple magnetometers and form array acceptor, receive like this function and receive how believable formation information, further improve the certainty of measurement of stratigraphic boundary.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all embodiments.And among the protection domain that the apparent variation of being extended out thus or variation are still created in the utility model.
Claims (5)
1. utilize high frequency magnetometer with boring a frontier probe device, it is characterized in that, comprising: tool body cylindraceous, described tool body deploy transmitter and receiver, described emitter is coil antenna, described receiver is magnetometer.
2. the high frequency magnetometer that utilizes according to claim 1, with boring frontier probe device, is characterized in that, the transmission of electromagnetic signals polarised direction of described coil antenna is parallel with tool body axis direction.
3. the high frequency magnetometer that utilizes according to claim 1, with boring frontier probe device, is characterized in that, described magnetometer receives and measure the magnetic-field component from described emitter.
4. the high frequency magnetometer that utilizes according to claim 1, with boring frontier probe device, is characterized in that, described receiver is that single magnetometer or multiple magnetometer form array acceptor.
5. according to utilizing high frequency magnetometer with boring frontier probe device described in claim 1 or 4, it is characterized in that, described magnetometer be operated in stilling the theatre to frequency the frequency band up to 10 megahertzes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320838040.4U CN203655274U (en) | 2013-12-18 | 2013-12-18 | While-drilling boundary detection device using high-frequency magnetometer |
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| CN201320838040.4U CN203655274U (en) | 2013-12-18 | 2013-12-18 | While-drilling boundary detection device using high-frequency magnetometer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670379A (en) * | 2013-12-18 | 2014-03-26 | 贝兹维仪器(苏州)有限公司 | Boundary measurement device and method while drilling by utilizing high-frequency magnetometer |
| CN104047599A (en) * | 2014-07-09 | 2014-09-17 | 中国石油集团长城钻探工程有限公司 | Specific resistance imaging measurement method for logger |
| CN109642456A (en) * | 2016-09-15 | 2019-04-16 | 李善军 | With the system and method for detection and lateral detection instrument before boring |
-
2013
- 2013-12-18 CN CN201320838040.4U patent/CN203655274U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670379A (en) * | 2013-12-18 | 2014-03-26 | 贝兹维仪器(苏州)有限公司 | Boundary measurement device and method while drilling by utilizing high-frequency magnetometer |
| CN104047599A (en) * | 2014-07-09 | 2014-09-17 | 中国石油集团长城钻探工程有限公司 | Specific resistance imaging measurement method for logger |
| CN104047599B (en) * | 2014-07-09 | 2016-08-24 | 中国石油集团长城钻探工程有限公司 | Logging instrument resistivity imaging measurement method |
| CN109642456A (en) * | 2016-09-15 | 2019-04-16 | 李善军 | With the system and method for detection and lateral detection instrument before boring |
| CN109642456B (en) * | 2016-09-15 | 2022-08-16 | 李善军 | System and method for detecting instruments before drilling and laterally |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20171218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |