Small-scale fault control karst type reservoir earthquake prediction method and device
A seismic prediction, small-scale technology, applied in measurement devices, seismology, geophysical measurement, etc., can solve the problem of poor ability to identify weak-amplitude seismic reflection characteristics of reservoirs, efficient development of oil reservoirs, and improved success rate of new wells being put into production, restricting reserves potential. And other issues
Active Publication Date: 2021-04-23
PETROCHINA CO LTD
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Problems solved by technology
[0004] The shortcomings of the existing technology include: poor ability to identify reservoirs with weak amplitude seismic reflection characteristics, and difficulty in identifying internal structure characteristics of small-scale fault-controlled karst reservoirs, which restricts the full exploitation of reserve potential, efficient development of oil reservoirs, and successful commissioning of new wells rate increase
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[0086]In order to better understand the present application scheme, the technical solutions in the present application embodiment will be apparent from the drawings in the present application, and the described embodiments are clearly described herein. It is an embodiment of the present application, not all of the embodiments. Based on the embodiments in the present application, one of ordinary skill in the art does not have all other embodiments obtained without creative labor, and should belong to the scope of the present application.
[0087]Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can be in the form of a fully hardware embodiment, a full software embodiment, or a combination of software and hardware aspects. Moreover, the present invention can be in the form of a computer program product implemented in one or more computers that include a co...
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The invention provides a small-scale fault control karst type reservoir earthquake prediction method and device. The method comprises the following steps: acquiring an earthquake data volume and logging data of a research area; converting the seismic data volume into a weiler domain, and then performing feature extraction to obtain weak seismic reflection feature data of the weiler domain; performing inverse wavelet domain transformation on the wavelet domain weak seismic reflection characteristic data to obtain structural domain weak seismic reflection characteristic data; obtaining inversion data representing a small-scale fault control karst type reservoir according to the structural domain weak seismic reflection characteristic data and the logging data, performing characteristic extraction after the seismic data volume is converted to the heeller domain to determine change generated by tectonic motion in the seismic data volume or other attribute volumes, recover the paleosedimentary environment, and highlight seismic response characteristics of small-fault-distance fractures in order to effectively recognize a weak-amplitude seismic reflection characteristic reservoir and recognize internal structural characteristics of a small-scale fault-control karst type reservoir.
Description
Technical field[0001]The present invention relates to the field of petroleum exploration and development, in particular, to a small-scale seismic prediction method and apparatus for a small scale.Background technique[0002]The results of petroleum exploration and development have shown that most of the main oil and gas rich concentrations of carbonate are closely related to the break, and the oil and gas is enriched in the fracture zone of the fracture and broken bomb, which has become the important direction of the current exploration of the rock solubility reservoir. With the deep exploration and development in recent years, in some development mature zones, the large-scale rock hole reservoir has been drilled, and the remaining reservoirs have a small reservoir, and the reservoir space is more cracks, and the well-caving hole. Mainly, the wave impedance difference between the reservoir and the non-reservoir is small, which is weak energy seismic reflection characteristics, and is ...
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IPC IPC(8): G01V1/00G01V1/28G01V1/30
Inventor 常少英沈安江周进高曹晓初曹鹏王力宝刘玲利朱永进
Owner PETROCHINA CO LTD