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Evaluation method and device for geophone positioning accuracy

An evaluation method and detection point technology, applied in positioning, measurement devices, radio wave measurement systems, etc., can solve problems that have not been raised

Active Publication Date: 2020-01-07
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
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  • Claims
  • Application Information

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Problems solved by technology

As for how to evaluate the positioning accuracy of geophone points, no effective solution has been proposed yet

Method used

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  • Evaluation method and device for geophone positioning accuracy
  • Evaluation method and device for geophone positioning accuracy
  • Evaluation method and device for geophone positioning accuracy

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Embodiment Construction

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present specification in combination with the drawings in the embodiments of the present specification. Obviously, the described embodiments are only some of the embodiments of the present specification, not all of them. Based on the embodiments in this specification, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of this specification.

[0017] Usually, the correct location of the receiver points enables the record of common receiver gathers to be flattened after linear motion correction (LMO). That is, the first arrivals are at the same time position. For example, assuming that both the shot point position and the receiver point position are accurate, the offset is accurate, so that the linear motion correction amount is equal to the first arrival time; after the linear motion corre...

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Abstract

The embodiments of this specification provide a method and device for evaluating the accuracy of geophone positioning. The method in the embodiment of this specification can provide a wave detection point; the wave detection point can correspond to at least one shot point and have positioning position data; there are characteristic parameters between the wave detection point and each of the shot points; the characteristic parameter Including offset, first arrival wave velocity and first arrival time. The method in the embodiment of this specification may include the following steps: based on the characteristic parameters, constructing a residual vector between the detection point and each of the shot points; based on the residual vector, determining the characteristic parameters of the positioning position data; using the The characterization parameters are used to evaluate the accuracy of the positioning position data.

Description

technical field [0001] The embodiments of this specification relate to the technical field of oil and gas, and in particular to a method and device for evaluating the accuracy of geophone location. Background technique [0002] With the development of exploration technology, submarine cable (OBC, Ocean Bottom Cable) and submarine node (OBN, Ocean Bottom Node) seismic exploration has gradually become the main method of offshore oil resource exploration. Seabed node seismic exploration needs to place node equipment (multi-component geophone and signal recording system) on the seabed, excite near sea level, receive and store reflections from deep layers. Different from submarine node seismic survey, submarine cable seismic survey places the geophone cable on the seabed. Regardless of submarine node seismic exploration or submarine cable seismic exploration, the receiver point usually drifts during the process of being placed from the sea surface to the bottom of the water, cau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V13/00
CPCG01V13/00G01V1/3835G01V2210/1293G01V2210/1427G01V2210/6222G01V1/20G01S5/22
Inventor 杨海申赵薇薇徐丽军肖永新侯昆鹏
Owner BC P INC CHINA NAT PETROLEUM CORP
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