CN202767968U - Three dimensional array induction calibration apparatus - Google Patents
Three dimensional array induction calibration apparatus Download PDFInfo
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- CN202767968U CN202767968U CN 201220075390 CN201220075390U CN202767968U CN 202767968 U CN202767968 U CN 202767968U CN 201220075390 CN201220075390 CN 201220075390 CN 201220075390 U CN201220075390 U CN 201220075390U CN 202767968 U CN202767968 U CN 202767968U
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- graduation apparatus
- azimuth
- array induction
- scale
- cubical array
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Abstract
The utility model relates to a three dimensional array induction calibration apparatus which is characterized in that the calibration apparatus comprises two calibration loops, a rotation apparatus and a movable apparatus, wherein the two calibration loops are coaxial and arranged at an interval, the whole calibration apparatus move axially along a three dimensional array induction log instrument through the movable apparatus, and the rotation apparatus is used to adjust the azimuth angle of the calibration apparatus. The calibration apparatus is characterized in that the azimuth angle of the axial calibration apparatus does not change in calibration processes is guaranteed through utilization of a slide track.
Description
Technical field
The utility model relates to the oil well logging field, relate in particular to a kind of for cubical array induction logging instrument radial component scale to the ring graduation apparatus.
Background technology
Nearly 30% petroleum resources is stored in the thin alternation of bed group of sand-mud stone in the world.The ratio of the thin alternation of bed petroleum resources of the sand-mud stone of China is greater than 30%.The thin mutual reservoir of sand-mud stone has the characteristics of low yield, hypotonic, low-resistance, and anisotropy is obvious, and geologic structure is complicated.Traditional array induction instrument coil array is parallel with the borehole axis direction, can only measure the one dimension resistivity of horizontal direction, so the traditional array induction instrument aratus can't be assessed the electrical anisotropy characteristic of the thin alternation of bed group of sand-mud stone.
The cubical array induction can not only obtain the horizontal resistivity on stratum, and can measure vertical resistivity.In the thin alternation of bed of sand-mud stone, horizontal and vertical resistivity has notable difference, and vertical resistivity can reflect the oil-gas Layer of high resistivity.And heritage to answer the result of the thin alternation of bed group of apparatus measures sand-mud stone be low-resistivity reservoir, therefore easy test leakage reservoir.Therefore, the cubical array induction instrument aratus has important meaning to the exploitation of the thin mutual reservoir of sand-mud stone.
The structure of coil system of cubical array induction logging instrument elementary cell is by the transmitting coil of three orthogonal vertical
,
,
, three shielded coils
,
,
Receiving coil with three orthogonal vertical
,
,
Form.According to electromagnetic induction principle, transmitting coil is at the surrounding spaces such as the excitation downhole of alternating current and stratum emission alternating electromagnetic field, and the electromagnetic field of emission has produced again secondary electromagnetic field in the stratum.Receiving coil receives the induced electromotive force tensor of nine component secondary electromagnetic field
:
Wherein the target first character is the transmitting coil direction under each component, and second character is the receiving coil direction.By receiving the induced electromotive force from the stratum electromagnetism, can access the horizontal and vertical electrical conductivity on stratum, and stratigraphic dip and azimuth, significant to the petroleum resources assessment of the thin alternation of bed group of thin layer sand-mud stone.
Scale is an indispensable link of production and the use of induction logging instrument.The effect of scale is to set up measuring-signal that instrument uploads and the relation between the apparent conductivity.In order to guarantee the degree of accuracy of scale, each component of instrument is complementary to the bed response scope of commonly using the electrical conductivity size to response signal needs and the instrument of graduation apparatus.If the instrument component is too little to the response signal of graduation apparatus, can reduce the degree of accuracy of scale.Therefore, the design scheme of cubical array induction log tool graduation apparatus need to guarantee that each component of instrument has large as far as possible response signal to graduation apparatus.Generally speaking, the instrument component need to reach the instrument component to more than 50% of peak response signal on the stratum of electrical conductivity size commonly used to the response signal of graduation apparatus.The graduation apparatus of traditional cubical array induction instrument aratus, such as the graduation apparatus (its whole disclosures by reference be attached to this paper) of the people such as Chen Tao with publication No. CN 102003171A disclosed being entitled as " a kind of three-dimensional induction logging instrument graduation apparatus ", and such as D. M. Homan, R. the people's such as A. Rosthal is entitled as " " Electromagnetic logging tool calibration system " U.S. Patent number US 7414391 B2 in the graduation apparatus (its whole disclosures are attached to this paper by reference) described; adopt monocline ring graduation apparatus; by the angle of slope that changes graduation apparatus and the stratum that different directions is simulated at the azimuth; obtain each component to the peak response signal of graduation apparatus, satisfy the scale needs of each component.But monocline ring graduation apparatus is to xx, yy, and xy, the response signal of these four radial components of yx is less, affects the accuracy of scale of these four components.
The utility model content
One or more in addressing the above problem, the utility model provides a kind of cubical array induction graduation apparatus for the radial component scale, it is characterized in that this graduation apparatus comprise two coaxial and the calibration loop of certain distance arranged, tumbler and mobile device, whole graduation apparatus moves axially along the cubical array induction log tool by mobile device, this tumbler is used for adjusting the azimuth of graduation apparatus, wherein, this graduation apparatus is to XX, YY, XY, these four radial components of YX are carried out scale, and this graduation apparatus further guarantees that by dragging track the azimuth of axial graduation apparatus in the scale process does not change.
According to an embodiment of the present utility model, this calibration loop is comprised of copper conductor.
According to an embodiment of the present utility model, the azimuth of graduation apparatus changes by whirligig, and described azimuth range is 0 to 360 degree.
According to an embodiment of the present utility model, except described scale resistance with carve the copper ring, miscellaneous part is nonmetals.
According to an embodiment of the present utility model, the azimuth of graduation apparatus is 0 degree during scale XX component.
According to an embodiment of the present utility model, the azimuth of graduation apparatus is 90 degree during scale YY component.
According to an embodiment of the present utility model, the azimuth of graduation apparatus is 45 degree when scale XY and YX component.
The utility model has the advantage of, the cubical array that provides is responded to graduation apparatus to xx, yy, and xy, the response signal of these four radial components of yx is larger, has improved the accuracy of scale of these four components.
Description of drawings
Following detailed description in conjunction with the drawings can more easily be understood the various features of the utility model embodiment.Run through accompanying drawing, identical Reference numeral represents same or analogous element, and in the accompanying drawings:
Fig. 1 shows a kind of cubical array induction graduation apparatus for the radial component scale according to an embodiment of the present utility model.
Fig. 2-5 shows the XX that the single-shot list is received the cubical array induction instrument aratus according to an embodiment of the present utility model, XY, and YX, the YY component is 0.01 to 100 ohm inclined ring graduation apparatus and coaxial response signal to the ring graduation apparatus to articulating resistance.
The specific embodiment
For simple and illustrative purpose, the principle of embodiment is described with reference to the example of embodiment mainly.In the following description, many details have been illustrated in order to thorough understanding to embodiment is provided.Yet, it is evident that for those of ordinary skills, can implement these embodiment in the situation that be not limited to these details.In other example, do not describe known method and structure in detail in order to avoid unnecessarily blur described embodiment.
Fig. 1 shows a kind of cubical array induction graduation apparatus 100 for the radial component scale according to an embodiment of the present utility model.Comprise device transmitting coil 16 among Fig. 1, receiving coil 17, azimuthal angle beta, turning cylinder 14 and dragging track 15.This graduation apparatus 100 comprises two calibration loops 11,13, tumbler and mobile device.These two calibration loops 11,13 coaxial and certain distance arranged.Whole graduation apparatus moves axially along the cubical array induction log tool by mobile device, and this tumbler is used for adjusting the azimuth of graduation apparatus.Preferably, described calibration loop 11,13 forms integrated connections and can rotate around described turning cylinder 14 by turning cylinder 14.According to an embodiment of the present utility model, the radius of each calibration loop equates.Scale resistance and calibration loop couple to form closed circuit.Wherein, this graduation apparatus 100 further guarantees that by dragging track 15 azimuth of axial graduation apparatus in the scale process does not change.
Fig. 2-the 5th, single-shot list receive the XX of cubical array induction instrument aratus, XY, and YX, the YY component is 0.01 to 100 ohm inclined ring graduation apparatus and coaxial response signal to the ring graduation apparatus to articulating resistance.Analog result obtains by moment method.The instrument tranmitting frequency is 20kHz, and spacing is 1m.Inclined ring and the coaxial mid point that the ring graduation apparatus is centered close to the emission receiving coil, the radius of calibration loop all is 0.5m, the calibration loop wire diameter is 0.01m.Symmetrical coaxial calibration loop mid point distance is 1m.The inclined scale device is centered close to the mid point of emission receiving coil, and the ring radius is 0.5m, and the calibration loop wire diameter is 0.01m.Adopt Eulerian angles (α, β) to describe calibration loop or coil array normal direction, namely the azimuth represents with α, and the inclination angle represents with β.Inclined ring and the angle of slope of encircling coaxial graduation apparatus is defined as the angle of calibration loop normal direction and z axle, 0 degree is defined as the parallel z axle of calibration loop normal direction, and 90 degree are defined as the calibration loop normal direction on the xy plane.The calibration loop azimuth is defined as the angle on calibration loop normal direction and xz plane, and 0 degree is defined as the calibration loop normal direction and is positioned on the xz plane, and 90 degree are defined as the calibration loop normal direction on the yz plane.The scale XX of two kinds of graduation apparatus, YY, XY, the same azimuth of using during the YX component, the angle of slope of monocline ring and coaxial symmetrical graduation apparatus are respectively 80 degree and 90 degree.Shown in Fig. 2-5, in the situation that other parameters are identical, be more than 2 times of monocline ring graduation apparatus to real part (Real) and the imaginary part (Imag) of encircling coaxial graduation apparatus peak response signal.Among Fig. 2-5, R represents the resistance that articulates of graduator; Expression unit of resistance ohm.V
eVoltage real part and the imaginary values of expression receiving coil; V represents the voltage unit volt.S represents the result that the monocline ring is corresponding, and D represents the result of coaxial symmetrical graduation apparatus.
Fig. 2 shows under outer meeting resistance is 0.01 to 100 ohm condition, and instrument xx component is to inclined ring graduation apparatus and coaxial signal response scope to the ring graduation apparatus.The inclined ring graduation apparatus is identical with the calibration loop radius with coaxial position to the ring graduation apparatus.Because instrument itself has a certain size radius, the angle of slope of inclined scale device can not reach 90 degree.The angle of slope of this example medium dip ring graduation apparatus is made as 80 degree, and the azimuth is 0 degree.Coaxial angle of slope to the ring graduation apparatus is 90 degree, and the azimuth is 0 degree.In case of the present utility model, when the azimuth of encircling coaxial graduation apparatus being become 90 degree, the azimuth of corresponding inclined ring graduation apparatus also changes 90 degree into, and in the constant situation of other conditions, the yy component is consistent with the xx component to the response of these two kinds of graduation apparatus.
Fig. 3 shows under outer meeting resistance is 0.01 to 100 ohm condition, and instrument xy component is to inclined ring graduation apparatus and coaxial signal response scope to the ring graduation apparatus.The inclined ring graduation apparatus is identical with the radius of coaxial position to the ring graduation apparatus and calibration loop.Because instrument itself has a certain size radius, the angle of slope of inclined scale device can not reach 90 degree.The angle of slope of this example medium dip ring graduation apparatus is made as 80 degree, and the azimuth is 0 degree.Coaxial angle of slope to the ring graduation apparatus is made as 90 degree, and the azimuth is 45 degree.
Fig. 4 shows under outer meeting resistance is 0.01 to 100 ohm condition, and instrument yx component is to inclined ring graduation apparatus and coaxial signal response scope to the ring graduation apparatus.The inclined ring graduation apparatus is identical with the radius of coaxial position to the ring graduation apparatus and calibration loop.Because instrument itself has a certain size radius, the angle of slope of inclined scale device can not reach 90 degree.The angle of slope of this example medium dip ring graduation apparatus is made as 80 degree, and the azimuth is 0 degree.Coaxial angle of slope to the ring graduation apparatus is made as 90 degree, and the azimuth is 45 degree.
Thus, clearly, according to the utility model, provide such system, its complete or at least part of satisfied intention, purpose and advantage that is better than prior art mentioned above.Therefore, although described specific embodiment of the present utility model, be to be understood that those skilled in the art can propose its alternative, modifications and variations, and intention makes this manual comprise that all these fall into alternative, modifications and variations in the appended claim scope.
In addition, for clarity sake and except as otherwise noted, when word " being comprised " and during its distortion, purpose is not to get rid of other additive, parts, integer or step.
Claims (7)
1. a cubical array is responded to graduation apparatus, it is characterized in that this graduation apparatus comprise two coaxial and calibration loop, tumbler and the mobile device of certain distance arranged, whole graduation apparatus moves axially along the cubical array induction log tool by mobile device, this tumbler is used for adjusting the azimuth of graduation apparatus, wherein, this graduation apparatus is to XX, YY, XY, these four radial components of YX are carried out scale, and this graduation apparatus further guarantees that by dragging track the azimuth of axial graduation apparatus in the scale process does not change.
2. cubical array induction graduation apparatus as claimed in claim 1 is characterized in that, this calibration loop is comprised of copper conductor.
3. cubical array induction graduation apparatus as claimed in claim 1 is characterized in that, the azimuth of graduation apparatus changes by whirligig, and described azimuth range is 0 to 360 degree.
4. such as the described cubical array induction of in the claim 1 ~ 3 any one graduation apparatus, it is characterized in that, except described scale resistance with carve the copper ring, miscellaneous part is nonmetals.
5. such as any one the described cubical array induction graduation apparatus in the claim 1 ~ 3, it is characterized in that, the azimuth of graduation apparatus is 0 degree during scale XX component.
6. such as any one the described cubical array induction graduation apparatus in the claim 1 ~ 3, it is characterized in that, the azimuth of graduation apparatus is 90 degree during scale YY component.
7. such as any one the described cubical array induction graduation apparatus in the claim 1 ~ 3, it is characterized in that, the azimuth of graduation apparatus is 45 degree when scale XY and YX component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220075390 CN202767968U (en) | 2012-03-02 | 2012-03-02 | Three dimensional array induction calibration apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220075390 CN202767968U (en) | 2012-03-02 | 2012-03-02 | Three dimensional array induction calibration apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202767968U true CN202767968U (en) | 2013-03-06 |
Family
ID=47774551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220075390 Expired - Fee Related CN202767968U (en) | 2012-03-02 | 2012-03-02 | Three dimensional array induction calibration apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202767968U (en) |
-
2012
- 2012-03-02 CN CN 201220075390 patent/CN202767968U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130306 Termination date: 20160302 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |