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Method for converting horizontal well data into plumb shaft data and method for seismic inversion

A seismic inversion and horizontal well technology, applied in seismic signal processing and other directions, can solve problems such as inaccurate inversion results of horizontal well logging data, and achieve the effects of improving prediction accuracy, vertical resolution, and reducing difficulty.

Active Publication Date: 2018-04-10
中国石油化工股份有限公司华北油气分公司勘探开发研究院 +1
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for converting horizontal well data to vertical well data and a method for seismic inversion, so as to solve the inaccurate inversion results caused by the failure of existing inversion technology to effectively utilize horizontal well logging data question

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  • Method for converting horizontal well data into plumb shaft data and method for seismic inversion
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  • Method for converting horizontal well data into plumb shaft data and method for seismic inversion

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Embodiment Construction

[0035] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0036] At present, the inversion technology is developing rapidly, but the difficulty of reservoir prediction and development is also increasing. It is an important direction for the development of inversion technology to make full use of logging information to improve the vertical resolution of inversion to effectively predict underground reservoirs. Based on the analysis of reservoir development characteristics and the comprehensive understanding of inversion techniques and methods, the present invention quantifies the parameters of horizontal well verticalization, that is, the inclination angle is greater than 90 degrees, and the extension length is greater than 1 meter for straightening, and batches can be performed. processing. Using this technology, combined with depth domain inversion technology, effectively improves the accuracy of 3D seismic reservoi...

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Abstract

The invention relates to the field of three-dimensional seismic inversion, in particular to a method for converting horizontal well data into plumb shaft data and a method for seismic inversion. According to the method, the parameters are quantified, the horizontal well data is effectively converted into the plumb shaft data, the converted plumb shaft data is combined with a depth domain inversiontechnology, so that the prediction precision and the longitudinal resolution of the three-dimensional seismic reservoir are effectively improved, and the difficulty of reservoir prediction and development is reduced.

Description

technical field [0001] The invention relates to the field of three-dimensional seismic inversion, in particular to a method for converting horizontal well data into vertical well data and a method for seismic inversion. Background technique [0002] With the increasing difficulty of oilfield exploration and development, seismic inversion technology began to rise and develop. The initial seismic inversion technology was mainly the wave impedance inversion based on the convolution model; later, Cook introduced the generalized linear inversion method; in order to make up for the deficiency of the single linear inversion method, geological, seismic and logging data Constrained inversion has become a hot topic. The inversion results obtained by this method have relatively high credibility, that is, there is continuity in the horizontal direction and high resolution in the vertical direction, and the applicability is relatively strong, which provides a very effective tool for res...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28G01V1/30
Inventor 范久霄黎小伟乔中林杜立筠袁春艳李宇翔姜华胡天乐
Owner 中国石油化工股份有限公司华北油气分公司勘探开发研究院
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