CN202645540U - Diameter-variable three-detection-depth high-resolution three-lateral logger - Google Patents
Diameter-variable three-detection-depth high-resolution three-lateral logger Download PDFInfo
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- CN202645540U CN202645540U CN 201220349114 CN201220349114U CN202645540U CN 202645540 U CN202645540 U CN 202645540U CN 201220349114 CN201220349114 CN 201220349114 CN 201220349114 U CN201220349114 U CN 201220349114U CN 202645540 U CN202645540 U CN 202645540U
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Abstract
The utility model relates to a diameter-variable three-detection-depth high-resolution three-lateral logger used for electrical method logging in oil exploitation. The logger comprises an electrode probe portion and an achieving circuit portion. The electrode probe portion comprises a main electrode A0, an upper shielding electrode A1, a lower shielding electrode A1, an upper shielding electrode A2, a lower shielding electrode A2, an upper shielding electrode A3 and a lower shielding electrode A3. The electrodes are connected through channel service unit (CSU) standard connectors, and the upper shielding electrode and the lower shielding electrode in each pair are connected through an internal wire. The outer diameter of the main electrode and the shielding electrodes A1 is larger than that of the upper shielding electrode A2 and the lower shielding electrode A2, the outer diameter of the upper shielding electrode A2 and the lower shielding electrode A2 is larger than that of the upper shielding electrode A3 and the lower shielding electrode A3, and the outer diameter of the shielding electrodes A3 is normal. The achieving circuit portion is integrated in the main electrode A0 and the shielding electrodes A1. The logger can sequentially increase detection depth on the premise that high resolution is maintained, effectively improves assessment of complex lithological character reservoir like thin oil layers and reflects invading condition of a ground layer and water logging grade information.
Description
Technical field
The utility model relates to a kind of three kinds of investigation depth high-resolution guard focusing devices in footpath that straighten that are used for electrical log in the oil exploitation.
Background technology
Traditional high-resolution guard focusing device as the main resistivity tool of oil field electrical log, under the certain prerequisite of investigation depth, can keep three higher side direction vertical resolutions always.But the further exploitation along with the oil field, its target is further pointed to thin poor reservoir, the complexity that environment around geological conditions and the oil reservoir becomes gradually, and existing resistivity tool can't satisfy in three higher side direction vertical resolution situations of maintenance, can carry out again the requirement that several investigation depths are visited.
Summary of the invention
In order to address the above problem, the utility model provides a kind of three kinds of investigation depth high-resolution guard focusing devices in footpath that straighten.This logging instrument is keeping under the high-resolution prerequisite, and investigation depth can be deepened successively, effectively solves the complex lithology reservoir evaluations such as oil sheet, reflects intrusion situation and the water logging class information on stratum.
The technical solution of the utility model is: a kind of three kinds of investigation depth high-resolution guard focusing devices in footpath that straighten, comprise main electrode A0, up and down bucking electrode A1, bucking electrode A2 up and down, wherein, this logging instrument also comprises up and down bucking electrode A3, described main electrode A0, up and down bucking electrode A1, bucking electrode A2 and adopt successively up and down the CSU standard interface to connect between bucking electrode A3 up and down, and every pair connect by inner lead respectively between bucking electrode up and down.
As preferably, the external diameter of described main electrode A0 and bucking electrode A1 is greater than the external diameter of bucking electrode A2, the external diameter of bucking electrode A2 is greater than the external diameter of bucking electrode A3, and the external diameter of bucking electrode A3 is normal size, realizes that circuit part is integrated in main electrode A0 and bucking electrode A1 is inner.
The utlity model has following beneficial effect: owing to adopting technique scheme, increased by three cascade screen electrodes on the basis of existing logging instrument, depth-logger can from shallow, the degree of depth shallow and dark side direction deepen successively, the darkest can be greatly more than the 0.9m; Simultaneously, because the increase of electrode external diameter, so that the attenuation of borehole wall mud layer, the impact of lowering apparatus surrounding environment factor, so that in the situation that the dark side degree of depth is deepened successively, keep higher resolution ratio, thus the contradiction between firm vertical resolution and the investigation depth.
Description of drawings
Fig. 1 is structural representation of the present utility model;
1-main electrode A0 among the figure, 2-is bucking electrode A1 up and down, and 3-is bucking electrode A2 up and down, and 4-is bucking electrode A3 up and down.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further:
By shown in Figure 1, this straightens the three kinds of investigation depth high-resolution guard focusing devices in footpath, comprise main electrode A01, up and down bucking electrode A12, bucking electrode A23 up and down, wherein, this logging instrument also comprises up and down bucking electrode A34, described main electrode A01, up and down bucking electrode A12, bucking electrode A23 and adopt successively up and down the CSU standard interface to connect between bucking electrode A34 up and down, and connect by inner lead respectively between bucking electrode about in the of every pair, insulated part adopts the polyether-ether-ketone special engineering plastics between each electrode.
As preferably, the external diameter of described main electrode A0 1 and bucking electrode A1 2 is greater than the external diameter of bucking electrode A2 3, the external diameter of bucking electrode A2 3 is greater than the external diameter of bucking electrode A3 4, the external diameter of bucking electrode A34 is normal size, so that the attenuation of borehole wall mud layer, the impact of lowering apparatus surrounding environment factor so that in the situation that the dark side degree of depth deepen successively, keep higher resolution ratio, thereby solved the contradiction between vertical resolution and the investigation depth.This instrument can be differentiated the 0.1m thin layer, and 0.2m can explain, the dark side degree of depth can be greatly more than the 0.9m; In addition, for the ease of combination logging, realize that circuit is integrated in the inside of main electrode A0 1 and bucking electrode A1 2, bucking electrode A3 4 can be used as the shell of other instruments, has effectively shortened the length with other instrument combination.
The operating principle of above-mentioned logging instrument: launch shallow side direction alternating current to the stratum by main electrode A0 1 and bucking electrode A1 2, this alternating current is got back to bucking electrode A2 3 by the stratum, finishes the measurement of shallow side direction; Shallow side direction alternating current during main electrode A0 1, bucking electrode A1 2 and bucking electrode A2 3 launch to the stratum, this alternating current is got back to bucking electrode A3 4 by the stratum, the measurement of shallow side direction in finishing; Main electrode A0 1, bucking electrode A1 2, bucking electrode A2 3 and bucking electrode A3 4 launch dark side direction alternating current to the stratum, this alternating current is got back to the measurement that cable sheath is finished dark side direction by the stratum.Because the difference of current supply circuit, so that shallow, in the degree of depth shallow and dark side direction deepen successively, just can reflect the information such as the intrusion situation on stratum and water logging grade, can effectively solve the complex lithology reservoir evaluations such as thin layer, thin interbed, for the geology expert provides more accurately formation resistivity information, effectively solve thin layer, a logging in water flooded layer difficult problem.
Claims (2)
1. one kind straightens the three kinds of investigation depth high-resolution guard focusing devices in footpath, comprise the electrode probe part and realize circuit part, electrode probe partly comprises main electrode A0(1), bucking electrode A1(2 up and down), bucking electrode A2(3 up and down), it is characterized in that: this logging instrument also comprises up and down bucking electrode A3(4), described main electrode A0(1), bucking electrode A1(2 up and down), bucking electrode A2(3 up and down) and bucking electrode A3(4 up and down) between adopt successively the CSU standard interface to connect, and every pair connect by inner lead respectively between bucking electrode up and down.
According to claim 1 straighten the footpath three kinds of investigation depth high-resolution guard focusing devices, it is characterized in that: described main electrode A0(1) with bucking electrode A1(2) external diameter greater than bucking electrode A2(3) external diameter, bucking electrode A2(3) external diameter is greater than bucking electrode A3(4) external diameter, bucking electrode A3(4) external diameter is normal size, realizes that circuit part is integrated in main electrode A0(1) and bucking electrode A1(2) inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220349114 CN202645540U (en) | 2012-07-18 | 2012-07-18 | Diameter-variable three-detection-depth high-resolution three-lateral logger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220349114 CN202645540U (en) | 2012-07-18 | 2012-07-18 | Diameter-variable three-detection-depth high-resolution three-lateral logger |
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| Publication Number | Publication Date |
|---|---|
| CN202645540U true CN202645540U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220349114 Expired - Fee Related CN202645540U (en) | 2012-07-18 | 2012-07-18 | Diameter-variable three-detection-depth high-resolution three-lateral logger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931821A (en) * | 2015-06-05 | 2015-09-23 | 电子科技大学 | Sensor probe for measuring electrical parameters of underground rock |
| CN105587315A (en) * | 2015-12-18 | 2016-05-18 | 杭州瑞利声电技术公司 | Main electrode probe based on soft focus array side direction |
-
2012
- 2012-07-18 CN CN 201220349114 patent/CN202645540U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931821A (en) * | 2015-06-05 | 2015-09-23 | 电子科技大学 | Sensor probe for measuring electrical parameters of underground rock |
| CN105587315A (en) * | 2015-12-18 | 2016-05-18 | 杭州瑞利声电技术公司 | Main electrode probe based on soft focus array side direction |
| CN105587315B (en) * | 2015-12-18 | 2019-01-15 | 杭州瑞利声电技术有限公司 | A kind of main electrode probe lateral based on soft-focus array |
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Legal Events
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20190718 |