CN104763415A - Electric imaging calibration well group - Google Patents
Electric imaging calibration well group Download PDFInfo
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- CN104763415A CN104763415A CN201510105370.6A CN201510105370A CN104763415A CN 104763415 A CN104763415 A CN 104763415A CN 201510105370 A CN201510105370 A CN 201510105370A CN 104763415 A CN104763415 A CN 104763415A
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Abstract
The invention discloses an electric imaging calibration well group which at least comprises one or more than one calibration well for verifying and scaling an electric imaging logging instrument, wherein the calibration well at least comprises a rock module (3), and an instrument through hole (4) formed in middle of the rock module (3); a radial gap is included behind the inner wall image of the rock module (3). The radial gap behind the inner wall image of the rock module is used for ensuring backflow of a measurement signal. Thus the imaging precision to the image of the electric imaging logging instrument is improved.
Description
Technical field
The present invention relates to borehole wall electric imaging logging technology, espespecially a kind of Electrical imaging scale gang of wells.
Background technology
Borehole wall electric imaging logging technology refers in down-hole employing sensor array measurement or rotation sweep measurement, along well longitudinally, circumference or radial direction gather formation information in a large number, obtains the 3-D view within the two dimensional image in the borehole wall or well week or a certain investigation depth of wellbore after being transferred to ground by image processing techniques.
Existing Electrical imaging scale gang of wells at least comprises: for the inspection of electric imaging logging instrument and the test pit of scale flatly or more than a bite; Wherein, the well diameter of each test pit is identical.
Wherein, the test pit instrument via hole that at least comprises rock module, be arranged on rat hole below rock module, be arranged on rock module centers.When carrying out verification and the scale of electric imaging logging instrument, need to add working fluid in instrument via hole.
In existing acoustic-electric imaging scale gang of wells, image is carved with at rock module inwall, by electric imaging logging instrument, to electric imaging logging instrument, School Affairs scale is carried out to the imaging of image, but, because the backflow of rock module inwall is more weak, cause the imaging precision of electric imaging logging instrument to image lower.
Summary of the invention
In order to solve the problem, the present invention proposes a kind of Electrical imaging scale gang of wells, the imaging precision of electric imaging logging instrument to image can be improved.
In order to achieve the above object, the present invention proposes a kind of Electrical imaging scale gang of wells, at least comprise: for the verification of electric imaging logging instrument and the test pit of scale flatly or more than a bite; Wherein, test pit at least comprises: rock module 3, is arranged on the instrument via hole 4 in the middle of rock module 3; Radial gap is included after rock module 3 inwall image.
Preferably, the well diameter of each test pit is all not identical.
Preferably, rock group fastener 2 is also comprised;
Described rock module 3 comprises a group or more rock group; Each group rock group is installed as one by a rock group fastener 2; Each rock group fastener 2 adopts taper guide frame to dock;
Wherein, each group rock group comprises more than a pair or a pair semi-circular rock, and often pair of semi-circular rock metal binding belt is tightened to an annulus.
Preferably, described rock group fastener 2 is corrosion-resistant metal materials.
Preferably, described semi-circular rock is for loading in mixture rock or sandstone or limestone or granite;
The described rock that loads in mixture comprises sandstone, limestone and granite.
Preferably, also comprise:
The guiding device 1 be connected with the upper cover of described rock group fastener 2, the rock base 5 be connected with the base of described rock group fastener 2.
Preferably, also comprise:
Be arranged on the rat hole below described rock base 5.
Compared with prior art, the present invention includes: for the verification of electric imaging logging instrument and the test pit of scale flatly or more than a bite; Wherein, test pit at least comprises: rock module 3, is arranged on the instrument via hole 4 in the middle of rock module 3; Radial gap is included after rock module 3 inwall image.The present invention ensures the backflow of measuring-signal by the radial gap after rock module inwall image, thus improves the imaging precision of electric imaging logging instrument to image.
Further, the well diameter of each test pit is all not identical, thus achieves the verification and scale that respond in different well diameter electric imaging logging instrument.
Further, rock module 3 at least comprises a group or more rock group 6, achieves and carries out electric imaging logging instrument to the verification of different lithology and scale simultaneously.
Accompanying drawing explanation
Be described the accompanying drawing in the embodiment of the present invention below, the accompanying drawing in embodiment is for a further understanding of the present invention, is used from explanation the present invention, does not form limiting the scope of the invention with manual one.
Fig. 1 is the structure composition schematic diagram of Electrical imaging scale gang of wells of the present invention;
Fig. 2 is the schematic diagram adopting taper guide frame to dock between rock group of the present invention;
In figure, 1 is guiding device, and 2 is rock group fastener, and 3 is rock module, and 4 is instrument via hole in rock, and 5 is rock base, and 6 is rock group.
Detailed description of the invention
For the ease of the understanding of those skilled in the art, below in conjunction with accompanying drawing, the invention will be further described, can not be used for limiting the scope of the invention.
See Fig. 1, the present invention proposes Electrical imaging scale gang of wells, at least comprise:
For the inspection of electric imaging logging instrument and the test pit of scale flatly or more than a bite.
Wherein, test pit at least comprises: rock module 3, is arranged on the instrument via hole 4 in the middle of rock module 3, after rock module 3 inwall image, include radial gap.
Wherein, radial gap can adopt openwork carving technology to realize, and specific implementation belongs to the common practise of those skilled in the art, and the protection domain be not intended to limit the present invention, repeats no more here.
Electrical imaging scale gang of wells of the present invention ensures the backflow of measuring-signal by the radial gap after rock module inwall image, thus improves the imaging precision of electric imaging logging instrument to image.
Wherein, the well diameter (being namely arranged on the diameter of the instrument via hole 4 at rock module 3 center) of each test pit is all not identical, thus achieves the verification and scale that respond in different well diameter electric imaging logging instrument.The well diameter of test pit can be 6 to 12.25 cun.Such as, Electrical imaging scale gang of wells can comprise three mouthfuls of test pits, and the well diameter of each test pit is respectively 6 inches, 8.5 inches and 12.25 inches.Wherein, well diameter is that the test pit of 8.5 inches is applicable to water-base mud Electrical imaging and oil-base mud Electrical imaging.
Wherein, rock module 3 at least comprises a group or more rock group 6.Give the schematic diagram of test pit for four groups of rock groups 6 in Fig. 1.When rock module 3 comprises the rock group 6 of two groups or more different lithology, electric imaging logging instrument can be carried out to the inspection of different lithology and scale simultaneously.
Wherein, taper guide frame can be adopted to dock between each rock group.
Wherein, each group rock group comprises more than a pair or a pair semi-circular rock, and often pair of semi-circular rock metal binding belt is tightened to an annulus.
Test pit also comprises rock group fastener 2, and each group rock group is installed as one by a rock group fastener 2, and each rock group fastener 2 adopts taper guide frame to dock.Fig. 2 is the schematic diagram adopting taper guide frame to dock between rock group.As shown in Figure 2, the base of a upper rock group fastener 2 is with the taper of indent, the upper cover of next rock group fastener 2 is with the taper of evagination, like this, the base of a upper rock group fastener 2 just can be enclosed within next rock group fastener 2 on cover, thus realize the docking of taper guide frame.
Each group of rock group is installed as one, ensures that rock endoporus is concentric, be convenient to rock group to be installed to down-hole simultaneously.
Wherein, rock group fastener 2 is corrosion-resistant metal materials.
Wherein, rock group can be combined, and concrete combination does not limit.The such as often pair of semi-circular rock can take two semi-circular rocks of different lithology, also can adopt two semi-circular rocks etc. that lithology is identical.
Wherein, semi-circular rock can be load in mixture rock or sandstone or limestone or granite etc.
Wherein, load in mixture rock and can comprise sandstone, limestone, granite etc.
Wherein, test pit also comprises the guiding device 1 be connected with the upper cover of rock group fastener 2, the rock base 5 be connected with the base of rock group fastener 2.
Wherein, connection between the upper cover of rock group fastener 2 and guiding device 1; connection between the base of rock group fastener 2 and rock base 5 can be existing various connected mode, and the protection domain that concrete connected mode is not intended to limit the present invention, repeats no more here.
Wherein, in order to ensure the measuring section length of electric imaging logging instrument, can also arrange the rat hole for depositing instrument non-measured section below rock base 5, specific implementation belongs to the common practise of those skilled in the art; the protection domain be not intended to limit the present invention, repeats no more here.
Wherein, when measuring, test pit can be arranged in well body, well body is designed to load-bearing leakage preventing structure, prevents underground water from going deep into wellhole or well liquid and infiltrates into underground water.
It should be noted that; above-described embodiment is only understand for the ease of those skilled in the art; be not limited to protection scope of the present invention; under the prerequisite not departing from inventive concept of the present invention, any apparent replacement and improvement etc. that those skilled in the art make the present invention are all within protection scope of the present invention.
Claims (7)
1. an Electrical imaging scale gang of wells, at least comprises: for the verification of electric imaging logging instrument and the test pit of scale flatly or more than a bite; Wherein, test pit at least comprises: rock module (3), is arranged on the instrument via hole (4) in the middle of rock module (3); It is characterized in that, after rock module (3) inwall image, include radial gap.
2. Electrical imaging scale gang of wells according to claim 1, is characterized in that, the well diameter of each test pit is all not identical.
3. Electrical imaging scale gang of wells according to claim 1, is characterized in that, also comprises rock group fastener (2);
Described rock module (3) comprises a group or more rock group; Each group rock group is installed as one by a rock group fastener (2); Each rock group fastener (2) adopts the docking of taper guide frame;
Wherein, each group rock group comprises more than a pair or a pair semi-circular rock, and often pair of semi-circular rock metal binding belt is tightened to an annulus.
4. Electrical imaging scale gang of wells according to claim 3, is characterized in that, described rock group fastener (2) is corrosion-resistant metal materials.
5. Electrical imaging scale gang of wells according to claim 3, is characterized in that, described semi-circular rock is for loading in mixture rock or sandstone or limestone or granite;
The described rock that loads in mixture comprises sandstone, limestone and granite.
6. Electrical imaging scale gang of wells according to claim 3, is characterized in that, also comprise:
The guiding device (1) be connected with the upper cover of described rock group fastener (2), the rock base (5) be connected with the base of described rock group fastener (2).
7. Electrical imaging scale gang of wells according to claim 6, is characterized in that, also comprise:
Be arranged on the rat hole below described rock base (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510105370.6A CN104763415A (en) | 2015-03-10 | 2015-03-10 | Electric imaging calibration well group |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510105370.6A CN104763415A (en) | 2015-03-10 | 2015-03-10 | Electric imaging calibration well group |
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| CN104763415A true CN104763415A (en) | 2015-07-08 |
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| CN201510105370.6A Pending CN104763415A (en) | 2015-03-10 | 2015-03-10 | Electric imaging calibration well group |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035355A (en) * | 2016-02-04 | 2017-08-11 | 中石化石油工程技术服务有限公司 | Remote detection graduation apparatus between a kind of well |
| CN111042808A (en) * | 2019-12-27 | 2020-04-21 | 中国石油集团测井有限公司华北分公司 | Electric imaging image calibration method and system for layered glutenite reservoir |
| CN112412391A (en) * | 2020-12-14 | 2021-02-26 | 中国海洋石油集团有限公司 | Well cementation quality scale well device and scale well unit thereof |
Citations (5)
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| RU2065185C1 (en) * | 1991-12-27 | 1996-08-10 | Владимир Владимирович Лебедев | Gear to test and calibrate devices for resistivity logging |
| CN2653523Y (en) * | 2002-11-22 | 2004-11-03 | 辽河石油勘探局测井公司 | Electroacoustic imaging logging analogue test device |
| CN202102131U (en) * | 2011-06-10 | 2012-01-04 | 中国海洋石油总公司 | Testing and marking device for probe of electric imaging apparatus |
| CN202510114U (en) * | 2012-02-15 | 2012-10-31 | 中国海洋石油总公司 | Nuclear magnetic resonance logging tool multipoint calibration device |
| CN104005755A (en) * | 2013-02-27 | 2014-08-27 | 中国石油集团长城钻探工程有限公司 | Electrical resistivity simulation unit easy to relatively position |
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2015
- 2015-03-10 CN CN201510105370.6A patent/CN104763415A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2065185C1 (en) * | 1991-12-27 | 1996-08-10 | Владимир Владимирович Лебедев | Gear to test and calibrate devices for resistivity logging |
| CN2653523Y (en) * | 2002-11-22 | 2004-11-03 | 辽河石油勘探局测井公司 | Electroacoustic imaging logging analogue test device |
| CN202102131U (en) * | 2011-06-10 | 2012-01-04 | 中国海洋石油总公司 | Testing and marking device for probe of electric imaging apparatus |
| CN202510114U (en) * | 2012-02-15 | 2012-10-31 | 中国海洋石油总公司 | Nuclear magnetic resonance logging tool multipoint calibration device |
| CN104005755A (en) * | 2013-02-27 | 2014-08-27 | 中国石油集团长城钻探工程有限公司 | Electrical resistivity simulation unit easy to relatively position |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035355A (en) * | 2016-02-04 | 2017-08-11 | 中石化石油工程技术服务有限公司 | Remote detection graduation apparatus between a kind of well |
| CN107035355B (en) * | 2016-02-04 | 2024-04-26 | 中国石油化工集团有限公司 | Inter-well remote detection scale device |
| CN111042808A (en) * | 2019-12-27 | 2020-04-21 | 中国石油集团测井有限公司华北分公司 | Electric imaging image calibration method and system for layered glutenite reservoir |
| CN111042808B (en) * | 2019-12-27 | 2021-03-16 | 中国石油天然气集团有限公司 | Electric imaging image calibration method and system for layered glutenite reservoir |
| CN112412391A (en) * | 2020-12-14 | 2021-02-26 | 中国海洋石油集团有限公司 | Well cementation quality scale well device and scale well unit thereof |
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Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Applicant after: China Offshore Oil Group Co., Ltd. Applicant after: China Oilfield Services Limited Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Applicant before: China National Offshore Oil Corporation Applicant before: China Oilfield Services Limited |
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Application publication date: 20150708 |