CN102607377A - Tool and method for measuring angular difference of tool face of oil field drilling instrument - Google Patents
Tool and method for measuring angular difference of tool face of oil field drilling instrument Download PDFInfo
- Publication number
- CN102607377A CN102607377A CN2012100362643A CN201210036264A CN102607377A CN 102607377 A CN102607377 A CN 102607377A CN 2012100362643 A CN2012100362643 A CN 2012100362643A CN 201210036264 A CN201210036264 A CN 201210036264A CN 102607377 A CN102607377 A CN 102607377A
- Authority
- CN
- China
- Prior art keywords
- scale
- shape
- instrument
- tool
- tubulose
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- A Measuring Device Byusing Mechanical Method (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention relates to a tool and a method for measuring an angular difference of a tool face of an oil field drilling instrument. The tool is characterized by comprising a platy aiming tool, a tubular aiming tool and a sighting telescope, wherein the platy aiming tool comprises a scale panel; an M-shaped open slot is formed inward along the middle part of one side of the scale panel; a V-shaped scale is arranged at the other side of the scale panel; a positioning rod is arranged at the symmetry center of the top of the V-shaped scale of the platy aiming tool; one end of the V-shaped scale of the platy aiming tool is provided with a hinge and the other side of the V-shaped scale is provided with calipers; the tubular aiming tool comprises a tubular scale; one end of the tubular scale is provided with a V-shaped scale; a positioning rod is fixed at the symmetry center of the top of the V-shaped scale of the tubular aiming tool; one end of the V-shaped scale of the tubular aiming tool is provided with a hinge and the other side of the V-shaped scale is provided with calipers; the sighting telescope comprises a telescope frame; the telescope frame comprises two lateral plates and a middle cross board; a rotating shaft is arranged on the two lateral plates and in front of the middle cross board; the rotating shaft is rotationally connected with a mirror plane; and a V-shaped notch is arranged upward at the middle position of the bottom of the cross board of the telescope frame.
Description
Technical field
The present invention relates to a kind of oil drilling instrument, particularly about a kind of oil drilling instrument tool face angular difference survey instrument and measuring method thereof.
Background technology
In the drilling measuring system, in order just to know the tool-face angular difference of oil drilling instrument according to predetermined hole deviation and orientation well-digging.The drilling well screw rod has curved point, i.e. flash tool-face has an angle between it and the drill collar markings; Between drill collar markings and the inserting tube tool-face certain angle is arranged also, just can calculate the angular difference of flash tool-face and inserting tube tool-face through these two angles.When measuring the angle of screw rod and drill collar markings, need combination to use one to overlap measurer, drill collar markings and screw rod markings are projected in the plane just can measure.Tool-face angular difference with this mensuration obtains is consistent with real angular difference, so just can obtain desirable well track.The multiple measurement instrument of using in the prior art is level crossing upslide movie queen, the projection that is difficult to each survey instrument of identification whether point-blank, therefore, measuring accuracy is poor.
Summary of the invention
To the problems referred to above, it is high to the purpose of this invention is to provide a kind of measuring accuracy, and convenient measurement can access the oil drilling instrument tool face angular difference survey instrument and the measuring method thereof of ideal well eye track.
For realizing above-mentioned purpose, the present invention takes following technical scheme: a kind of oil drilling instrument tool face angular difference survey instrument is characterized in that: it comprises tabular aiming instrument, tubulose aiming instrument and gun sight; Said tabular aiming instrument comprises that a scale is dull and stereotyped; Said middle part along the dull and stereotyped side of scale inwardly sets out one " M " shape open slot; The dull and stereotyped opposite side of said scale is offered one " V " shape gap; And one " V " shape scale being set in said " V " shape gap position, the symmetrical center line of said " M " shape open slot overlaps with the symmetrical center line of said " V " shape scale; Said " V " shape scale comprises a top and both ends; The symcenter place, top of said " V " shape scale is provided with a positioning rod; The pointed nose of said backstay is stretched in the opening of said " V " shape scale; Both ends one end of said " V " shape scale is provided with a hinge, and the other end is provided with clamp; Said tubulose aiming instrument comprises a tubulose scale; A wherein end of said tubulose scale is provided with one " V " shape scale; Said " V " shape scale comprises a top and both ends, and the symcenter place, top of said " V " shape scale is a positioning rod fixedly, and the pointed nose of said backstay is stretched in the opening of said " V " shape scale; Both ends one end of said " V " shape scale is provided with a hinge, and the other end is provided with clamp; Said tubulose scale, " V " shape scale and backstay three's symmetrical center line overlaps; Said gun sight comprises picture frame, and said picture frame comprises two side plates and middle transverse slat, and on said two side plates, the place ahead of middle transverse slat is provided with a rotating shaft, a minute surface is rotationally connected in the said rotating shaft; One " V " v notch v is upwards offered in the centre position of said transverse slat bottom, and the symmetrical center line of said " V " v notch v and the symmetrical center line of said minute surface are on same neutral surface.
The top of said " V " shape scale in said tabular aiming instrument and the said tubulose aiming instrument all is the circular arc transition.
The measuring method of above-mentioned a kind of oil drilling instrument tool face angular difference survey instrument; It may further comprise the steps: 1) pointed nose with backstay in the tabular aiming instrument is inserted in the groove of drill collar markings; Hinge and clamp with in the tabular aiming instrument are encircled drill collar; Tabular aiming instrument is near the lower end of drill collar, and vertical with drill collar; 2) pointed nose with backstay in the tubulose aiming instrument is inserted in the groove of drill collar markings, encircles drill collar with hinge and clamp in the tubulose aiming instrument, and tubulose aims at the upper end of instrument near drill collar, and vertical with drill collar; 3) with gun sight be installed on the screw rod, the below of tabular aiming instrument, the vertical side of two side plates of picture frame contacts with screw rod all the time, the rotation minute surface appears on the minute surface up to the reflection of tubulose scale and " M " shape open slot; Move gun sight along the screw rod circumferencial direction, overlap up to the symmetrical center line of tubulose scale and the reflection of symmetrical center line on gun sight of " M " shape open slot, and overlap with the symmetrical center line of minute surface; 4) along symmetrical center line standardized markings on screw rod of " V " v notch v of gun sight picture frame; Measure the angle of original representative flash tool-face graticule on these markings and the screw rod; Be exactly the angular difference of flash tool-face and drill collar markings, and the angular difference of drill collar markings and inserting tube tool-face is certain, therefore; Through calculating the angular difference of inserting tube tool-face and flash tool-face, measure and accomplish.
The present invention is owing to take above technical scheme, and it has the following advantages: 1, the present invention measures the differential seat angle of curved point (being the flash tool-face) of screw rod and drill collar markings through tabular aiming instrument, tubulose aiming instrument and gun sight acting in conjunction; Wherein, " V " shape opening of tabular aiming instrument is bigger, simultaneously the angle position of opening also flatten accordingly slow, made things convenient for and drill collar between binding; On tabular aiming instrument, offer " M " shape open slot; The tubulose scale of tubulose aiming instrument is projected in " M " shape open slot fully; Align with the symmetrical center line of " M " shape open slot, so just can find the position of tubulose aiming instrument and tabular aiming instrument accurately.2, the tabular tool master of the present invention, tubulose aiming instrument all become horizontal positioned with the gun sight three; Circumferencial direction through at screw rod moves horizontally gun sight; Adjust three's symmetrical center line, three's symmetrical center line is projected on the same line, promptly be regarded as three's position centering; On screw rod draw mark line through " V " v notch v on the gun sight this moment; Just can well measure the angular difference of flash tool-face and drill collar markings according to it, and the angular difference of drill collar markings and inserting tube tool-face is certain, so through calculating the angular difference that just can obtain inserting tube tool-face and flash tool-face; Make the oil drilling instrument obtain desirable well track according to predetermined hole deviation and orientation drilling well.The present invention by three independently instrument utilization reflection concern that cooperation accomplishes measurement, can obtain oil drilling instrument tool face angular difference comparatively accurately, easy to operate, therefore, can be widely used in the measuring process of oil drilling instrument tool face angular difference.
Description of drawings
Fig. 1 is the structural representation of survey instrument of the present invention
Fig. 2 is the structural representation of the tabular aiming instrument of the present invention
Fig. 3 is the structural representation of tubulose aiming instrument of the present invention
Fig. 4 is the structural representation of gun sight of the present invention
Fig. 5 is the schematic top plan view of Fig. 4
Fig. 6 is the measurement reflection synoptic diagram of survey instrument of the present invention
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is carried out detailed description.
As shown in Figure 1, the present invention includes tabular aiming instrument 1, tubulose aiming instrument 2 and gun sight 3.Through the acting in conjunction of tabular aiming instrument 1, tubulose aiming instrument 2 and gun sight 3, measure the curved point of screw rod of screw rod 4, i.e. the differential seat angle of flash tool-face graticule 41 and the drill collar markings 51 of drill collar 5.
As shown in Figure 2; Tabular aiming instrument 1 of the present invention comprises a scale dull and stereotyped 11; Middle part along a side of scale dull and stereotyped 11 inwardly sets out one " M " shape open slot 12; Therefore, on the symmetrical center line of " M " shape open slot 12, has a tip 13 (i.e. summit in the middle of " M " letter) naturally.Corresponding with " M " shape open slot 12; Opposite side at scale dull and stereotyped 11 is offered one " V " shape gap; And one " V " shape scale 14 being set in this " V " shape gap stationkeeping, the symmetrical center line of " M " shape open slot 12 overlaps with the symmetrical center line of " V " shape scale 14.The opening of " V " shape scale 14 is outside, and " V " shape scale 14 comprises a top and both ends, and the top of " V " shape scale 14 is the circular arc transition.On the top symmetrical center line of " V " shape scale 14, fixedly install a positioning rod 15, the pointed nose of backstay 15 is stretched in the opening of " V " shape scale 14, and the pointed nose of backstay 15 is inserted in the groove of drill collar markings 51 during measurement, plays positioning action.Both ends one end of " V " shape scale 14 is provided with a hinge 16, and the other end is provided with clamp 17, is used to encircle at drill collar 5.
As shown in Figure 3; Tubulose aiming instrument 2 of the present invention comprises a tubulose scale 21, and a wherein end of tubulose scale 21 is provided with one " V " shape scale 22, and the opening of " V " shape scale 22 is outside; " V " shape scale 22 comprises a top and both ends, and the top of " V " shape scale 22 is the circular arc transition.Fixing a positioning rod 23 on the top symmetrical center line of " V " shape scale 22, the pointed nose of backstay 23 is stretched in the opening of " V " shape scale 22, and the pointed nose of backstay 23 is inserted in the groove of drill collar markings 51 during measurement, plays positioning action.Both ends one end of " V " shape scale 22 is provided with a hinge 24, and the other end is provided with clamp 25, is used to encircle at drill collar 5.Tubulose scale 21, " V " shape scale 22 and backstay 23 threes' symmetrical center line overlaps.
Like Fig. 1, Fig. 4, shown in Figure 5, gun sight 3 of the present invention comprises picture frame 31, minute surface 32 and rotating shaft 33.Picture frame 31 is " H " type, comprises two side plates 34 and middle transverse slat 35, and rotating shaft 33 is arranged on two side plates 34, the place ahead of middle transverse slat 35, and minute surface 32 connects rotating shaft 33 through web member, and minute surface 32 can be around rotating shaft 33 rotations.One " V " v notch v 36 is upwards offered in the centre position, transverse slat 35 bottom of picture frame 31, and the symmetrical center line of " V " v notch v 36 and the symmetrical center line of minute surface 32 are on same neutral surface.When measuring; The vertical side of two side plates 34 of picture frame 31 contacts with screw rod 4 all the time; Rotation minute surface 32 appears on the minute surface 32 up to the reflection of tubulose scale 21 and " M " shape open slot 12; At this moment move gun sight 3 along screw rod 4 circumferencial directions, overlap up to the symmetrical center line of tubulose scale 21 and the reflection of symmetrical center line on gun sight 3 of " M " shape open slot 12, and overlap with the symmetrical center line of minute surface 32.
Like Fig. 1, shown in Figure 6, the measuring method of survey instrument of the present invention may further comprise the steps:
1) pointed nose with the backstay 15 of tabular aiming instrument 1 is inserted in the groove of drill collar markings 51; With hinge in the tabular aiming instrument 1 16 and clamp 17 it is encircled on drill collar 5; When installing; Tabular aiming instrument 1 is as much as possible near the lower end of drill collar 5, and makes tabular aiming instrument 1 vertical with drill collar 5.
2) pointed nose that tubulose is aimed at the backstay 23 of instrument 2 also is inserted in the groove of drill collar markings 51; Hinge 24 with in the tubulose aiming instrument 2 is encircled it on drill collar 5 with clamp 25; Tubulose aiming instrument 2 is as much as possible near the upper end of drill collar 5 when installing, and makes tubulose aiming instrument 2 vertical with drill collar 5.
3) gun sight 3 is installed on the screw rod 4; Be in the bottom among the three; The vertical side of two side plates 34 of picture frame 31 contacts with screw rod 4 all the time, and rotation minute surface 32 appears on the minute surface 32 up to the reflection of tubulose scale 21 and " M " shape open slot 12, at this moment moves gun sight 3 along screw rod 4 circumferencial directions; Overlap up to the symmetrical center line of tubulose scale 21 and the reflection of symmetrical center line on gun sight 3 of " M " shape open slot 12, and overlap with the symmetrical center line of minute surface 32.
4) along symmetrical center line standardized markings 6 on screw rod 4 of " V " v notch vs 36 of gun sight 3 picture frames 31; Measure the angle of original representative flash tool-face graticule 41 on these markings 6 and the screw rod 4; It is exactly the angular difference of flash tool-face and drill collar markings; And the angular difference of drill collar markings and inserting tube tool-face is certain; Therefore, through calculating the angular difference that just can know inserting tube tool-face and flash tool-face, measure and accomplish.
Tabular aiming instrument 1 of the present invention adopts " V " shape scale 14, and opening is bigger, and the angle position of while opening also latens slow accordingly, is convenient to and drill collar 5 bindings; Simultaneously; Can strengthen the opening of " M " shape open slot 13; The tubulose scale 21 of tubulose aiming instrument 2 is projected in the opened gap of " M " shape open slot 13 fully; So just can adjust the reflection of tubulose aiming instrument 2 and tabular aiming instrument 1, make their symmetrical center line reflection alignment through move horizontally gun sight 3 at screw rod 4 circumferencial directions.So just can be according to angular difference; Well measure the angular difference of flash tool-face graticule 41 and drill collar markings 51; Then obtain the angular difference of inserting tube tool-face and flash tool-face, make the oil drilling instrument, obtain desirable well track according to predetermined hole deviation and orientation drilling well.
Above-mentioned each embodiment only is used to explain the present invention; Wherein the structure of each parts, connection and arrangement mode etc. all can change to some extent; Every equivalents of on the basis of technical scheme of the present invention, carrying out and improvement all should not got rid of outside protection scope of the present invention.
Claims (3)
1. oil drilling instrument tool face angular difference survey instrument is characterized in that: it comprises tabular aiming instrument, tubulose aiming instrument and gun sight;
Said tabular aiming instrument comprises that a scale is dull and stereotyped; Said middle part along the dull and stereotyped side of scale inwardly sets out one " M " shape open slot; The dull and stereotyped opposite side of said scale is offered one " V " shape gap; And one " V " shape scale being set in said " V " shape gap position, the symmetrical center line of said " M " shape open slot overlaps with the symmetrical center line of said " V " shape scale; Said " V " shape scale comprises a top and both ends; The symcenter place, top of said " V " shape scale is provided with a positioning rod; The pointed nose of said backstay is stretched in the opening of said " V " shape scale; Both ends one end of said " V " shape scale is provided with a hinge, and the other end is provided with clamp;
Said tubulose aiming instrument comprises a tubulose scale; A wherein end of said tubulose scale is provided with one " V " shape scale; Said " V " shape scale comprises a top and both ends, and the symcenter place, top of said " V " shape scale is a positioning rod fixedly, and the pointed nose of said backstay is stretched in the opening of said " V " shape scale; Both ends one end of said " V " shape scale is provided with a hinge, and the other end is provided with clamp; Said tubulose scale, " V " shape scale and backstay three's symmetrical center line overlaps;
Said gun sight comprises picture frame, and said picture frame comprises two side plates and middle transverse slat, and on said two side plates, the place ahead of middle transverse slat is provided with a rotating shaft, a minute surface is rotationally connected in the said rotating shaft; One " V " v notch v is upwards offered in the centre position of said transverse slat bottom, and the symmetrical center line of said " V " v notch v and the symmetrical center line of said minute surface are on same neutral surface.
2. a kind of oil drilling instrument tool face angular difference survey instrument as claimed in claim 1 is characterized in that: the top of said " V " shape scale in said tabular aiming instrument and the said tubulose aiming instrument all is the circular arc transition.
3. the measuring method of an oil drilling instrument tool face angular difference survey instrument according to claim 1 or claim 2, it may further comprise the steps:
1) pointed nose with backstay in the tabular aiming instrument is inserted in the groove of drill collar markings, encircles drill collar with hinge and clamp in the tabular aiming instrument, and tabular aiming instrument is near the lower end of drill collar, and vertical with drill collar;
2) pointed nose with backstay in the tubulose aiming instrument is inserted in the groove of drill collar markings, encircles drill collar with hinge and clamp in the tubulose aiming instrument, and tubulose aims at the upper end of instrument near drill collar, and vertical with drill collar;
3) with gun sight be installed on the screw rod, the below of tabular aiming instrument, the vertical side of two side plates of picture frame contacts with screw rod all the time, the rotation minute surface appears on the minute surface up to the reflection of tubulose scale and " M " shape open slot; Move gun sight along the screw rod circumferencial direction, overlap up to the symmetrical center line of tubulose scale and the reflection of symmetrical center line on gun sight of " M " shape open slot, and overlap with the symmetrical center line of minute surface;
4) along symmetrical center line standardized markings on screw rod of " V " v notch v of gun sight picture frame; Measure the angle of original representative flash tool-face graticule on these markings and the screw rod; Be exactly the angular difference of flash tool-face and drill collar markings, and the angular difference of drill collar markings and inserting tube tool-face is certain, therefore; Through calculating the angular difference of inserting tube tool-face and flash tool-face, measure and accomplish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210036264.3A CN102607377B (en) | 2012-02-17 | 2012-02-17 | Tool and method for measuring angular difference of tool face of oil field drilling instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210036264.3A CN102607377B (en) | 2012-02-17 | 2012-02-17 | Tool and method for measuring angular difference of tool face of oil field drilling instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102607377A true CN102607377A (en) | 2012-07-25 |
| CN102607377B CN102607377B (en) | 2014-06-18 |
Family
ID=46524989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210036264.3A Active CN102607377B (en) | 2012-02-17 | 2012-02-17 | Tool and method for measuring angular difference of tool face of oil field drilling instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102607377B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106567705A (en) * | 2015-10-08 | 2017-04-19 | 中国石油化工股份有限公司 | Method for controlling borehole track by tool face azimuth |
| CN107063035A (en) * | 2016-12-29 | 2017-08-18 | 中国冶集团有限公司 | Determine the device and method in pipeline center section |
| CN110345847A (en) * | 2018-12-24 | 2019-10-18 | 西安航天动力机械有限公司 | Auxiliary mould for cylinder exterior part external form accuracy detection |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000008815A (en) * | 1998-06-16 | 2000-01-11 | Hyundai Motor Co Ltd | Device and method for measuring phase angle error of cam shaft for internal combustion engine |
| CN2849164Y (en) * | 2005-11-14 | 2006-12-20 | 郑州士奇测控技术有限公司 | Near drill during drilling measuring device of well deviation angle |
| CN201884022U (en) * | 2010-12-06 | 2011-06-29 | 中国石油集团西部钻探工程有限公司 | Portable angle difference measure gauge |
| CN202064934U (en) * | 2011-06-03 | 2011-12-07 | 新疆贝肯能源工程股份有限公司 | MWD (Measurement While Drilling) external angular difference drill protractor |
| CN202126238U (en) * | 2011-06-23 | 2012-01-25 | 江阴兴鼎石油管具有限公司 | Inspection device for axiality and angular deviation of drill rod |
| CN202501822U (en) * | 2012-02-17 | 2012-10-24 | 中国海洋石油总公司 | Tool for measuring angular difference between tool surfaces of oil filed drilling apparatus |
-
2012
- 2012-02-17 CN CN201210036264.3A patent/CN102607377B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000008815A (en) * | 1998-06-16 | 2000-01-11 | Hyundai Motor Co Ltd | Device and method for measuring phase angle error of cam shaft for internal combustion engine |
| CN2849164Y (en) * | 2005-11-14 | 2006-12-20 | 郑州士奇测控技术有限公司 | Near drill during drilling measuring device of well deviation angle |
| CN201884022U (en) * | 2010-12-06 | 2011-06-29 | 中国石油集团西部钻探工程有限公司 | Portable angle difference measure gauge |
| CN202064934U (en) * | 2011-06-03 | 2011-12-07 | 新疆贝肯能源工程股份有限公司 | MWD (Measurement While Drilling) external angular difference drill protractor |
| CN202126238U (en) * | 2011-06-23 | 2012-01-25 | 江阴兴鼎石油管具有限公司 | Inspection device for axiality and angular deviation of drill rod |
| CN202501822U (en) * | 2012-02-17 | 2012-10-24 | 中国海洋石油总公司 | Tool for measuring angular difference between tool surfaces of oil filed drilling apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106567705A (en) * | 2015-10-08 | 2017-04-19 | 中国石油化工股份有限公司 | Method for controlling borehole track by tool face azimuth |
| CN107063035A (en) * | 2016-12-29 | 2017-08-18 | 中国冶集团有限公司 | Determine the device and method in pipeline center section |
| CN110345847A (en) * | 2018-12-24 | 2019-10-18 | 西安航天动力机械有限公司 | Auxiliary mould for cylinder exterior part external form accuracy detection |
| CN110345847B (en) * | 2018-12-24 | 2021-03-26 | 西安航天动力机械有限公司 | A auxiliary fixtures that is used for barrel outside part appearance precision to detect |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102607377B (en) | 2014-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104038755B (en) | Camera distortion central point test device and recognition methods | |
| CN204064297U (en) | Multi-functional duplex measurement bar | |
| CN102607377B (en) | Tool and method for measuring angular difference of tool face of oil field drilling instrument | |
| RU2013144963A (en) | COMPOSITE ANGULAR IMPLANT | |
| CN104875543A (en) | Art painting framing proportion perspective correcting machine | |
| CN104034354A (en) | Alignment process for IMU (Inertial Measurement Unit) position and azimuth determining system | |
| CN104316293A (en) | Device and method for determining parallelism of continuous zooming television optical axis | |
| CN102788594B (en) | A kind of total powerstation or the bearing calibration of transit centralizer | |
| CN202501822U (en) | Tool for measuring angular difference between tool surfaces of oil filed drilling apparatus | |
| CN104079342B (en) | Portable satellite communications terminal and method | |
| CN103064195A (en) | Adjustment method of non-coaxial optical system | |
| CN205617168U (en) | A accurate adjustment frock for moderate -low speed magnetic levitation track section of track | |
| CN205138400U (en) | Leaf spring grasswort testing platform | |
| CN204027550U (en) | The automatic detection device of horizontal angle measurement accuracy | |
| CN206476122U (en) | Location and installation mechanism for inertial navigation set | |
| CN103235390A (en) | Aligning device for polarization maintaining optical fiber countershaft | |
| CN104359656B (en) | Small field of view optical system optical parallax detection method and the equipment of enforcement the method | |
| CN204142255U (en) | A kind of center alignment device | |
| CN204255611U (en) | A kind of prism detects frock | |
| CN209214633U (en) | Laser scanner self-checking device | |
| CN202885836U (en) | Theodolite level one circle measurement precision testing system under extreme temperature condition | |
| CN102620749B (en) | A kind of calibrated mount of centering rod | |
| CN203964864U (en) | Measure the device of error of centering on point instrumentation | |
| CN207717085U (en) | A kind of telescopic auxiliary device for coordinating level meter | |
| CN202255403U (en) | Upper centering bracket for gyroscopic total station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: Goaltech Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation Co-patentee before: Goaltech Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191218 Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC research institute limited liability company Patentee before: China Offshore Oil Group Co., Ltd. Co-patentee before: Goaltech Co., Ltd. |
|
| TR01 | Transfer of patent right |