Underwater seismic detector string

Abstract

The invention relates to an underwater seismic detector string, which is provided with a shell consisting of a lower protective shell and an upper cover, a plug, detector cassette mechanisms, a transmission cable, a tail cone and a steel rope; the detector cassette mechanisms are fixed in the shell; the plug is connected with the upper cover by threads, wherein the shell is provided with cable through holes; a plurality of the detector cassette mechanisms are assembled in the shell in a sealing mode according to a serial and parallel structure; the detector cassette mechanisms are arranged in grooves of the lower protective shell respectively, and are fixed by tablets and fastening screws; the detector cassette mechanisms are sequentially and serially connected by conducting wires, and are connected with the transmission cable by a wiring terminal; and the other end of the transmission cable passes through the upper cover and the plug, and are output. The underwater seismic detector string has compact and reasonable structure, reliable seal, easy assembly, small volume, light weight, convenient mounting and fixation, and excellent waterproof and pressure resisting performances, and can be simultaneously used in various service environments of land, shallow fords of rivers, lakes and seas and offshore waters and other filed construction sites.

Description

technical field [0001] The invention relates to a geophone device, in particular to a string of underwater geophones. Background technique [0002] At present, with the further development of the oil exploration industry, it is impossible to carry out oil exploration only in pure land or deep water areas. In many cases, complete exploration blocks include land, rivers, lakes, seas, shoals, and even offshore waters. Using traditional land Strings or underwater strings can only exert their greatest advantages within their own scope of use, but when they need to be used in other aspects, they show many disadvantages and shortcomings, so construction units often need to carry multiple types of geophone strings Going out for construction and classified maintenance not only increases the investment cost and maintenance cost of the construction unit, but also affects the effect and completion progress of oil exploration. [0003] The existing land geophones mainly combine multiple...

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Problems solved by technology

[0002] At present, with the further development of the oil exploration industry, it is impossible to carry out oil exploration only in pure land or deep water areas. In many cases, complete exploration blocks include land, rivers, lakes, seas, shoals, and even offshore waters. Using traditional land Strings or underwater strings can only exert their greatest advantages within their own scope of use, but when they need to be used in other aspects, they show many disadvantages and shortcomings, so construction units often need to carry multiple types of geophone strings Going out for construction and classified maintenance not only increases the investment cost and maintenance cost of the construction unit, but also affects the effect and completion progress of oil exploration

[0003] The existing land geophones mainly combine multiple geophone cores in series and parallel. During the construction process, these single-core geophones use a weighted method to receive signals, and each single-core geophone needs to be corrected separately. Placement, it is difficult to ensure the overall accuracy, and the construction intensity is high, there are many hidden dangers of water leakage, short circuit, and open circuit. is used in

[0004] In the traditional underwater string, the shape of the single-core geophone is mostly olive-shaped, which is convenient for underwater placement, but it is inconvenient to place in the land area. Since each string is composed of more than a dozen single-core geophones, the construction intensity is high, and water and electricity leakage Seriously, it is extremely inconvenient to use and maintain; for example, Chinese patent 96227130.6 discloses a kind of underwater geophone, which places multiple geophone cores in a protective shell, but the large plane structure at the bottom makes it difficult to operate in waters with aquatic plants. When used in the environment, it is not easy to be pressed into the soil, which will affect the coupling effect of the signal

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