Quantitative prediction method for maximum extension distance of nearshore subaqueous fan flood sedimentary unit

A technology of sedimentary unit and prediction method, applied in geophysical measurement, special data processing applications, instruments, etc., can solve the problem of accurate resource evaluation, the difficulty of accurate deployment of well locations, the lack of effective guidance for division, and the lack of understanding of spatial distribution scale. problems such as saving development costs, improving development efficiency, and improving well layout efficiency
CN105467463BActive Publication Date: 2017-07-21CHINA UNIV OF PETROLEUM (EAST CHINA)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA UNIV OF PETROLEUM (EAST CHINA)
Publication Date
2017-07-21

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Abstract

The invention relates to a maximum extension distance quantified prediction method of a near-shore underwater fan flood sedimentation unit body. Based on a near-shore underwater fan sedimentation formation mechanism and a water tank sedimentation simulation experiment, plane and profile distribution characteristics of a near-shore underwater fan glutenite sedimentation unit body are determined, the longitudinal change rule of the thickness of the flood sedimentation unit body is researched, and a theoretical formula model of the thickness change of a central longitudinal profile of the flood sedimentation unit body is established; with the guidance of the distribution characteristics, determined by the simulation experiment, of the near-shore underwater fan glutenite sedimentation unit body, a practical geological body is divided into sedimentation unit bodies by means of well-seismic combination; and based on sedimentation unit body division, the boundary thicknesses of the flood sedimentation unit bodies are determined, and according to the practical well location condition on each sedimentation unit body, the maximum extension distances of the flood sedimentation unit bodies are predicted. According to the invention, the maximum extension distance of the near-shore underwater fan flood sedimentation unit body can be accurately and effectively determined, the sedimentation of a well network and the making of an exploration development scheme are effectively guided, and the well spacing efficiency in the exploration development process is improved.
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Description

technical field

[0001] The invention belongs to the technical field of petroleum and natural gas exploration and development, and in particular relates to a method for quantifying and predicting the maximum extension distance of a nearshore subaqueous fan flood deposition unit. Background technique

[0002] The nearshore subaqueous fan in the steep slope zone of the faulted lake basin refers to various depositional processes such as episodic activities of basin-controlling faults and climate-controlled debris flows, paroxysmal mountain floods, and mountain rivers during flood intervals during the period of lake transgression and high water level Deep-water conglomerate fans distributed close to faults formed by sedimentation. The near-shore subaqueous fan glutenite body in the steep slope of the faulted lake basin is closely adjacent to the deep lacustrine source rock, and has an excellent source-reservoir-cap matching relationship. In recent years, major breakthroughs have...

Claims

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