Title:
METHOD AND APPARATUS FOR OBTAINING RESIDUAL GRAVITY ANOMALY
Document Type and Number:
WIPO Patent Application WO/2019/104912
Kind Code:
A1
Abstract:
Disclosed are a method and apparatus for obtaining a residual gravity anomaly. The method comprises: obtaining a Bouguer gravity anomaly in a target region; determining a first pre-set range corresponding to each sampling point in the target region; obtaining a first regional field value of a sampling point using a surface fitting method based on coordinates and a field value of the sampling point within the first pre-set range; traversing the target region, and obtaining a first regional gravity anomaly of the target region according to the first regional field value of the sampling point in the target region; and obtaining a first residual gravity anomaly of the target region according to the Bouguer gravity anomaly and the first regional gravity anomaly. In the embodiments of the present invention, a regional field value of a sampling point obtained by utilizing a local surface fitting method has higher precision and accuracy, and the regional gravity anomaly of a target region is more in line with the actual scenario, so that a residual gravity anomaly obtained according to a Bouguer gravity anomaly and the regional gravity anomaly is more accurate, and thus the underground geological body can be accurately predicted.
Inventors:
WANG ZHENLI (CN)
Application Number:
PCT/CN2018/080199
Publication Date:
June 06, 2019
Filing Date:
March 23, 2018
Export Citation:
Assignee:
INST OF GEOLOGY AND GEOPHYSICS/INSTITUE OF EARTH SCIENCE CHINESE ACADEMY OF SCIENCES (CN)
International Classes:
G01V7/00
Foreign References:
| RU2501047C2 | 2013-12-10 |
Other References:
YANG, PEISHENG: "Research in the Method of Extracting Gravity and Magnetic Local Anomalies and the Application", ELECTRONIC JOURNAL (MASTER'S THESIS), no. 4, 15 April 2015 (2015-04-15), pages a011 - 315
LI, CHUNFANG: "The Research on the Separating Methods for potential Field in Space Domain", ELECTRONIC JOURNAL (CHINESE MASTER'S THESES), no. 1, 15 January 2012 (2012-01-15), pages a011 - 221
LI, CHUNFANG: "The Research on the Separating Methods for potential Field in Space Domain", ELECTRONIC JOURNAL (CHINESE MASTER'S THESES), no. 1, 15 January 2012 (2012-01-15), pages a011 - 221
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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