CN1269513A - 海底拖曳四分量地震数据采集一体化单元 - Google Patents
海底拖曳四分量地震数据采集一体化单元 Download PDFInfo
- Publication number
- CN1269513A CN1269513A CN00113795.6A CN00113795A CN1269513A CN 1269513 A CN1269513 A CN 1269513A CN 00113795 A CN00113795 A CN 00113795A CN 1269513 A CN1269513 A CN 1269513A
- Authority
- CN
- China
- Prior art keywords
- cable
- data
- component
- unit
- submarine
- 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
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 6
- 230000001133 acceleration Effects 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 230000027455 binding Effects 0.000 claims description 4
- 238000009739 binding Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229910000677 High-carbon steel Inorganic materials 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 2
- 230000003278 mimic effect Effects 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 238000011002 quantification Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 4
- 239000000203 mixture Substances 0.000 claims 2
- 239000011241 protective layer Substances 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract 1
- 239000013535 sea water Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/18—Receiving elements, e.g. seismometer, geophone or torque detectors, for localised single point measurements
- G01V1/181—Geophones
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/20—Arrangements of receiving elements, e.g. geophone pattern
- G01V1/201—Constructional details of seismic cables, e.g. streamers
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
Claims (5)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN00113795.6A CN1120377C (zh) | 2000-04-26 | 2000-04-26 | 海底拖曳四分量地震数据采集一体化单元 |
US09/838,642 US6607050B2 (en) | 2000-04-26 | 2001-04-19 | Integrated ocean bottom towed array for four-component seismic data acquisition |
FR0105495A FR2808337B1 (fr) | 2000-04-26 | 2001-04-24 | Agencement integre d'acquisition de donnees sismiques a quatre composantes destine a etre tire au fond de l'ocean |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN00113795.6A CN1120377C (zh) | 2000-04-26 | 2000-04-26 | 海底拖曳四分量地震数据采集一体化单元 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1269513A true CN1269513A (zh) | 2000-10-11 |
CN1120377C CN1120377C (zh) | 2003-09-03 |
Family
ID=4583550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN00113795.6A Expired - Lifetime CN1120377C (zh) | 2000-04-26 | 2000-04-26 | 海底拖曳四分量地震数据采集一体化单元 |
Country Status (3)
Country | Link |
---|---|
US (1) | US6607050B2 (zh) |
CN (1) | CN1120377C (zh) |
FR (1) | FR2808337B1 (zh) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100386242C (zh) * | 2005-11-28 | 2008-05-07 | 中国船舶重工集团公司第七一五研究所 | 嵌埋海监传感器的流线型拖体 |
CN100419457C (zh) * | 2005-03-18 | 2008-09-17 | 中国海洋石油总公司 | 海洋地震勘探数据采集记录系统 |
CN103620446A (zh) * | 2011-05-04 | 2014-03-05 | 瑟塞尔公司 | 用于处理地球物理数据的模块、以及相应的连接器和子组合件,其中所述模块包括各自形成一个半壳的两个连接器,这两个连接器经布置以形成壳体,电子板位于所述壳体内 |
CN104375170A (zh) * | 2009-10-05 | 2015-02-25 | 格库技术有限公司 | 具有地震传感器和发散传感器的传感器组件 |
CN105022089A (zh) * | 2014-04-17 | 2015-11-04 | 英洛瓦(天津)物探装备有限责任公司 | 线缆负荷传输设备和用于地震数据获取的方法 |
CN105355297A (zh) * | 2015-11-26 | 2016-02-24 | 中天科技海缆有限公司 | 一种系泊型海洋观测系统用深海光电复合缆 |
CN1987524B (zh) * | 2005-12-21 | 2016-06-01 | Pgs地球物理公司 | 具有可调弹力的短地震拖缆拉伸区段 |
CN105824046A (zh) * | 2015-01-27 | 2016-08-03 | 赛赛尔公司 | 用于拖缆的电子单元 |
CN108711465A (zh) * | 2018-05-04 | 2018-10-26 | 常州船用电缆有限责任公司 | 海洋地震勘探用固体拖缆 |
CN110910625A (zh) * | 2019-11-15 | 2020-03-24 | 浙江大学 | 基于485总线的海底原位低功耗多节点数据采集系统 |
CN113391343A (zh) * | 2021-06-11 | 2021-09-14 | 中油奥博(成都)科技有限公司 | 海底光纤四分量地震仪器系统及其数据采集方法 |
WO2023279675A1 (zh) * | 2021-07-07 | 2023-01-12 | 自然资源部第二海洋研究所 | 一种链式海底地震监测装置 |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1468312A4 (en) * | 2001-11-30 | 2008-02-13 | Ion Geophysical Corp | SEISMIC CABLE INSTALLED PERMANENTLY ON THE OCEANIC FLOOR |
US6775203B2 (en) * | 2002-07-18 | 2004-08-10 | Input/Output, Inc. | Seismic seabed cable with sensor units |
US7239577B2 (en) * | 2002-08-30 | 2007-07-03 | Pgs Americas, Inc. | Apparatus and methods for multicomponent marine geophysical data gathering |
US7310287B2 (en) * | 2003-05-30 | 2007-12-18 | Fairfield Industries Incorporated | Method and apparatus for seismic data acquisition |
US7561493B2 (en) * | 2003-05-30 | 2009-07-14 | Fairfield Industries, Inc. | Method and apparatus for land based seismic data acquisition |
US7926614B2 (en) * | 2004-03-03 | 2011-04-19 | Pgs Americas, Inc. | Particle motion sensor mounting for marine seismic sensor streamers |
US20050194201A1 (en) * | 2004-03-03 | 2005-09-08 | Tenghamn Stig R.L. | Particle motion sensor for marine seismic sensor streamers |
CN100363753C (zh) * | 2004-06-28 | 2008-01-23 | 陕西超波传感器有限责任公司 | 一种新型的复合地震检波器 |
EP1805533B1 (en) * | 2004-09-21 | 2020-05-06 | Magseis FF LLC | Apparatus for seismic data acquisition |
CN102788992B (zh) * | 2004-09-21 | 2016-09-28 | 费尔菲尔德工业公司 | 用于地震数据采集的方法和设备 |
US7660206B2 (en) * | 2004-12-21 | 2010-02-09 | Optoplan As | Ocean bottom seismic station |
US8534959B2 (en) | 2005-01-17 | 2013-09-17 | Fairfield Industries Incorporated | Method and apparatus for deployment of ocean bottom seismometers |
US8127706B2 (en) * | 2005-05-02 | 2012-03-06 | Fairfield Industries Incorporated | Deck configuration for ocean bottom seismometer launch platforms |
US7518952B1 (en) | 2005-09-09 | 2009-04-14 | Itt Manufacturing Enterprises, Inc. | Sonar sensor array signal distribution system and method |
US7433265B2 (en) * | 2005-10-04 | 2008-10-07 | Fairfield Industries, Inc. | Converted wave energy removal from seismic data |
US7551517B2 (en) * | 2006-05-05 | 2009-06-23 | Optoplan As | Seabed seismic station packaging |
CA2652979C (en) * | 2006-06-02 | 2012-07-17 | Input/Output, Inc. | Motion transducer |
CN1924614B (zh) * | 2006-10-11 | 2010-05-12 | 中国海洋石油总公司 | 海洋拖曳线阵双翼自平衡展开装置 |
CN1924613B (zh) * | 2006-10-11 | 2010-05-12 | 中国船舶重工集团公司第七一○研究所 | 海洋拖曳线阵三翼平衡展开装置及翼板攻角零度的确定方法 |
US7881159B2 (en) * | 2006-12-18 | 2011-02-01 | Pgs Geophysical As | Seismic streamers which attentuate longitudinally traveling waves |
US8611191B2 (en) * | 2008-05-22 | 2013-12-17 | Fairfield Industries, Inc. | Land based unit for seismic data acquisition |
US8838392B2 (en) * | 2009-10-05 | 2014-09-16 | Westerngeco L.L.C. | Noise attenuation in passive seismic data |
US8712694B2 (en) * | 2009-10-05 | 2014-04-29 | Westerngeco L.L.C. | Combining seismic data from sensors to attenuate noise |
US20110085417A1 (en) * | 2009-10-12 | 2011-04-14 | Daniel Ronnow | String of Sensor Assemblies Having a Seismic Sensor and Pressure Sensor |
US8520469B2 (en) * | 2009-10-12 | 2013-08-27 | Westerngeco L.L.C. | Sensor assembly having a seismic sensor, pressure sensor, and processor to apply first and second digital filters |
CN102879807B (zh) * | 2011-07-13 | 2015-08-05 | 中国石油天然气集团公司 | 一种地震仪采集站壳体 |
US20130028047A1 (en) * | 2011-07-28 | 2013-01-31 | Yury Georgievich Erofeev | Bottom module for seismic survey |
DE102011113811A1 (de) * | 2011-09-20 | 2013-03-21 | Atlas Elektronik Gmbh | Trägermodul für eine Unterwasserantenne sowie Unterwasserantenne mit derartigem Trägermodul |
CN103048681B (zh) * | 2011-10-15 | 2016-06-22 | 山西晋明海科技开发有限公司 | 阈值可设置的地震数据采集启动器 |
US10048395B2 (en) | 2013-02-01 | 2018-08-14 | Westerngeco L.L.C. | Computing a gradient based on differences of plural pairs of particle motion sensors |
US9874647B2 (en) | 2013-09-03 | 2018-01-23 | Pgs Geophysical As | Distributed multi-sensor streamer |
WO2015109175A1 (en) | 2014-01-17 | 2015-07-23 | Westerngeco Llc | Seismic sensor coupling |
CN106291669B (zh) * | 2016-07-26 | 2019-03-22 | 中国科学院武汉岩土力学研究所 | 一种智能式爆炸波采集探头 |
DK3602141T3 (da) | 2017-05-23 | 2024-09-02 | Digicourse Llc | Seismisk knudeplaceringssystem |
EP4152054B1 (en) * | 2017-12-15 | 2024-05-01 | PGS Geophysical AS | Seismic pressure and acceleration sensor |
US11313985B2 (en) | 2018-06-08 | 2022-04-26 | Ion Geophysical Corporation | Sensor node attachment mechanism and cable retrieval system |
CN109143325B (zh) * | 2018-09-29 | 2024-05-21 | 山东蓝海可燃冰勘探开发研究院有限公司 | 一种海底四分量节点地震仪器系统及海底地震数据采集方法 |
CN113253335B (zh) * | 2021-06-01 | 2022-09-02 | 中国地质调查局油气资源调查中心 | 地面微地震观测装置及方法 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3921755A (en) * | 1971-05-03 | 1975-11-25 | Western Geophysical Co | Towable seismic detector conveyance |
CA1080342A (en) * | 1976-04-22 | 1980-06-24 | Ernest M. Hall (Jr.) | Receiving seismic waves with an accelerometer and a hydrophone |
US4078223A (en) * | 1976-09-10 | 1978-03-07 | Western Geophysical Co. Of America | Geophone and seismic cable assembly |
US4893290A (en) * | 1986-10-29 | 1990-01-09 | Western Atlas International, Inc. | Three-axis sensor |
US5274603A (en) * | 1991-07-29 | 1993-12-28 | Shell Oil Company | Marine seismic cable section assembly |
US5189642A (en) * | 1991-09-10 | 1993-02-23 | Chevron Research And Technology Company | Seafloor seismic recorder |
US5136549A (en) * | 1991-09-19 | 1992-08-04 | Teledyne Exploration | Marine hydrophone |
NO305266B1 (no) * | 1997-06-09 | 1999-04-26 | Alsthom Cge Alcatel | Seismisk kabel og fremgangsmÕte for fremstilling av slik kabel |
US6021092A (en) * | 1997-06-09 | 2000-02-01 | Western Atlas International, Inc. | Method for deriving surface consistent reflectivity map from dual sensor seismic data |
US6021090A (en) * | 1997-10-22 | 2000-02-01 | Western Atlas International, Inc. | Horizontal and vertical receiver-consistent deconvolution for an ocean bottom cable |
US6005828A (en) * | 1997-10-31 | 1999-12-21 | Input/Output, Inc. | Acoustic positioning of seismic ocean bottom cable |
US6201764B1 (en) * | 1997-10-31 | 2001-03-13 | Input/Output, Inc. | Apparatus and method for correcting for capacitance variations in hydrophones |
US5991238A (en) * | 1998-06-09 | 1999-11-23 | Western Atlas International, Inc. | Weighted backus filter method of combining dual sensor traces |
NO308680B1 (no) * | 1998-06-19 | 2000-10-09 | Cit Alcatel | Seismisk kabel med elektriske og optiske ledere og ytre armering, samt aksielt anordnede sensorhus |
US6246637B1 (en) * | 1998-09-28 | 2001-06-12 | Pgs Tensor, Inc. | Method and system for combining three component seismic data |
US6021091A (en) * | 1999-01-20 | 2000-02-01 | Western Altas International, Inc. | Method for manufacturing a seismic cable |
-
2000
- 2000-04-26 CN CN00113795.6A patent/CN1120377C/zh not_active Expired - Lifetime
-
2001
- 2001-04-19 US US09/838,642 patent/US6607050B2/en not_active Expired - Lifetime
- 2001-04-24 FR FR0105495A patent/FR2808337B1/fr not_active Expired - Lifetime
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100419457C (zh) * | 2005-03-18 | 2008-09-17 | 中国海洋石油总公司 | 海洋地震勘探数据采集记录系统 |
CN100386242C (zh) * | 2005-11-28 | 2008-05-07 | 中国船舶重工集团公司第七一五研究所 | 嵌埋海监传感器的流线型拖体 |
CN1987524B (zh) * | 2005-12-21 | 2016-06-01 | Pgs地球物理公司 | 具有可调弹力的短地震拖缆拉伸区段 |
CN104375170A (zh) * | 2009-10-05 | 2015-02-25 | 格库技术有限公司 | 具有地震传感器和发散传感器的传感器组件 |
CN104375170B (zh) * | 2009-10-05 | 2017-04-12 | 格库技术有限公司 | 具有地震传感器和发散传感器的传感器组件 |
CN103620446B (zh) * | 2011-05-04 | 2016-12-07 | 瑟塞尔公司 | 用于处理地球物理数据的模块、以及相应的连接器和子组合件 |
CN103620446A (zh) * | 2011-05-04 | 2014-03-05 | 瑟塞尔公司 | 用于处理地球物理数据的模块、以及相应的连接器和子组合件,其中所述模块包括各自形成一个半壳的两个连接器,这两个连接器经布置以形成壳体,电子板位于所述壳体内 |
CN105022089A (zh) * | 2014-04-17 | 2015-11-04 | 英洛瓦(天津)物探装备有限责任公司 | 线缆负荷传输设备和用于地震数据获取的方法 |
CN105022089B (zh) * | 2014-04-17 | 2019-07-09 | 英洛瓦(天津)物探装备有限责任公司 | 线缆负荷传输设备 |
CN105824046A (zh) * | 2015-01-27 | 2016-08-03 | 赛赛尔公司 | 用于拖缆的电子单元 |
CN105355297A (zh) * | 2015-11-26 | 2016-02-24 | 中天科技海缆有限公司 | 一种系泊型海洋观测系统用深海光电复合缆 |
CN108711465A (zh) * | 2018-05-04 | 2018-10-26 | 常州船用电缆有限责任公司 | 海洋地震勘探用固体拖缆 |
CN110910625A (zh) * | 2019-11-15 | 2020-03-24 | 浙江大学 | 基于485总线的海底原位低功耗多节点数据采集系统 |
CN110910625B (zh) * | 2019-11-15 | 2022-04-19 | 浙江大学 | 基于485总线的海底原位低功耗多节点数据采集系统 |
CN113391343A (zh) * | 2021-06-11 | 2021-09-14 | 中油奥博(成都)科技有限公司 | 海底光纤四分量地震仪器系统及其数据采集方法 |
WO2023279675A1 (zh) * | 2021-07-07 | 2023-01-12 | 自然资源部第二海洋研究所 | 一种链式海底地震监测装置 |
Also Published As
Publication number | Publication date |
---|---|
FR2808337A1 (fr) | 2001-11-02 |
CN1120377C (zh) | 2003-09-03 |
US6607050B2 (en) | 2003-08-19 |
US20010035311A1 (en) | 2001-11-01 |
FR2808337B1 (fr) | 2009-04-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1120377C (zh) | 海底拖曳四分量地震数据采集一体化单元 | |
JP2019519750A (ja) | 近海底水和物探査システム | |
US4984218A (en) | Marine acoustic array configured for tow noise reduction | |
CN1289921C (zh) | 分布式海洋地震勘探拖缆 | |
EP3805811B1 (en) | Marine seismic data acquisition control device | |
EP0134684A2 (en) | Low noise digital seismic streamer and method of marine seismic exploration | |
CN2394234Y (zh) | 海底拖曳四分量地震数据采集一体化单元 | |
GB2103797A (en) | Arrangements for connecting a series of data acquisition devices to a remote receiving and recording system | |
US4855732A (en) | System for the transmission of signals between a reception assembly lowered into a well and a central control and recording laboratory | |
CN105510978B (zh) | 高精度海洋地震勘探垂直缆 | |
CN2809661Y (zh) | 分布式海洋地震勘探拖缆 | |
CN110412652A (zh) | 一种海洋地震数据传输单元 | |
GB2137750A (en) | Modular Seismic Cable Section | |
CN106908134A (zh) | 一种深海声波采集装置与方法 | |
CN201007742Y (zh) | 矿井震动检测仪 | |
JP3435606B2 (ja) | 多機能井戸ケーブル上の信号伝送率最適化の為の方法および装置 | |
CN201508415U (zh) | 高分辨率海洋地震勘探多道数字拖缆 | |
CN106772558A (zh) | 一种海底地震监测系统 | |
CN210626679U (zh) | 一种海洋地震数据传输单元 | |
CN102778694A (zh) | 高分辨率工程地震数据采集系统 | |
CN210626680U (zh) | 一种海洋地震数据光电转换单元 | |
US4775962A (en) | Marine seismic streamer employing variable aperture flow through spacers | |
CN220730449U (zh) | 一种应用于水域单道地震反射波法的超声波换能水听器 | |
CN112379432A (zh) | 小道数轻便式水听器阵列采集系统 | |
CN112985577A (zh) | 一种椭圆形截面的垂直拖曳线列阵 |
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 | ||
C57 | Notification of unclear or unknown address | ||
DD01 | Delivery of document by public notice |
Addressee: Xian Petroleum Prospecting Instrument General Factory Document name: patent for invention |
|
C57 | Notification of unclear or unknown address | ||
DD01 | Delivery of document by public notice |
Addressee: Xian Petroleum Prospecting Instrument General Factory Document name: patent for invention |
|
ASS | Succession or assignment of patent right |
Owner name: DONGFANG GEOPHYSICAL EXPLORATION CO., LTD., SINOP Free format text: FORMER OWNER: XI-AN PETROLEUM PROSPECTING INSTRUMENT GEN. FACTORY Effective date: 20061208 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20061208 Address after: 072751 No. 189 Yang Xi Road, Zhuozhou, Hebei Patentee after: Dongfang Geophysical Exploration Co., Ltd., China Petrochemical Corp. Address before: 710061 in Shaanxi Province, the southern suburbs of Xi'an City, gongzhuan Road No. 8 Patentee before: Xian Petroleum Prospecting Instrument General Factory |
|
CX01 | Expiry of patent term |
Granted publication date: 20030903 |
|
CX01 | Expiry of patent term |