High-precision marine seismic exploration vertical cable
A technology for seismic exploration and vertical cables, which is applied in seismology, seismology for areas covered by water, geophysical surveys, etc. The working water depth is large, the random interference is suppressed, and the effect of reasonable separation is realized.
Active Publication Date: 2016-11-23
OCEAN UNIV OF CHINA
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] At present, the vertical cables in foreign countries are connected to the Ocean Bottom Seismometer (Ocean Bottom Seismometer). There is no vertical cable for independent work, which increases the work cost to a certain extent. Meet the actual needs of the country
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0027] figure 1 It is a schematic diagram of the structure of the vertical cable for high-resolution marine seismic exploration, which is divided into the front connecting section 2 (at least 30m), the first working section 4 (at least 60m), the tail working section 6 (at least 60m), the tail connecting section 7 and the auxiliary steel cable 8 . The working sections 4 and 6 are all solid cables.
[0028] Figure 4 It is a schematic diagram of the combination structure of vertical cable hydrophones for high-resolution marine seismic exploration. The hydrophones 12 of each channel are arranged with unequal weights, that is, each hydrophone combination 11 is composed of 16 hydrophones, and the weights are from the middle to both sides. Decrease is beneficial to better suppress noise and improve effective signal. The hydrophone arrangement 11 of each channel in this patent adopts the arrangement mode of 1, 2, 3, 4, 3, 2, 1, which can effectively suppress random interference. ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A high-precision oceanic seismic exploration vertical cable comprises an auxiliary steel cable and a cable part fixed on the auxiliary steel cable, wherein the cable part sequentially consists of a front connection section, a head working section, a tail working section and a tail connection section from top to bottom; the upper end part of the front connection section is provided with a watertight connector, a clinometer and pressure sensor group is arranged between the front connection section and the head working section; the head and tail working sections are sequentially provided with eight hydrophone combinations along the length direction; an extendable eight-digit package is arranged between the head working section and the tail working section; a clinometer and pressure sensor group is arranged between the tail working section and the tail connection section, and the tail end of the tail connection section is provided with a titanium alloy metal connector for connection. According to the vertical cable, the digital-to-analogue conversion is realized thereon, and the digitization of the cable is truly realized; the vertical cable still can normally work under the water depth of 1000m; the vertical cable is provided with the auxiliary steel cable, thus realizing reasonable function separation; by adjusting the front connection section and the tail connection section, the submergence depth of the vertical cable can be controlled in real time.
Description
technical field [0001] The invention relates to a data acquisition cable used in seismic exploration, in particular to a high-precision marine seismic exploration vertical cable. Background technique [0002] Marine seismic data acquisition cable is the key equipment for marine seismic exploration data acquisition. At present, domestic marine seismic exploration systems use horizontal cables (Horizon Cable) or submarine cables (Ocean Bottom Cable). In recent years, with the advancement of technology, some high-resolution multi-channel horizontal cables have been developed in China. However, due to their proximity to the sea level, the accuracy of the data obtained is low, and their resolution can only meet the needs of medium-deep or shallow layers. The needs of engineering seismic exploration cannot meet the requirements of high-precision seismic exploration. At present, the working water depth of domestic horizontal cables or submarine cables is mostly within 30m. When t...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/38
CPCG01V1/3808
Inventor 邢磊刘怀山尉佳刘洪卫王林飞高翔李伟林
Owner OCEAN UNIV OF CHINA