The division method of the glutenite sedimentary unit in the nearshore subaqueous fan

A sedimentary unit and underwater fan technology, applied in geophysical measurement, instruments, etc., can solve problems such as the lack of effective guiding significance for division, achieve the effect of solving the contradiction of water injection development and improving the efficiency of crude oil recovery

Active Publication Date: 2017-10-10
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

However, high-resolution sequence stratigraphy has good guiding significance for the identification of gradual traction flow sedimentary units, and for the division of nearshore subaqueous fan glutenite sedimentary units controlled by irregular event gravity flow spin-cycle deposition Lack of effective guidance

Method used

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  • The division method of the glutenite sedimentary unit in the nearshore subaqueous fan
  • The division method of the glutenite sedimentary unit in the nearshore subaqueous fan
  • The division method of the glutenite sedimentary unit in the nearshore subaqueous fan

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Embodiment Construction

[0053] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0054] Take the subaqueous fan glutenite sedimentary unit division of the nearshore subaqueous fan in the upper sub-member of the fourth member of the Shahejie Formation in the steep slope belt controlled by shovel-type boundary faults in the ×× faulted lake basin of ×× Oilfield as an example. Such as figure 1 Shown, the nearshore subaqueous fan sandy conglomerate depositional unit body division method of the present invention, it contains the following steps:

[0055] Step 1: Establish the division standard of nearshore subaqueous fan glutenite sedimentary units in the steep slope zone of the faulted lake basin.

[0056] (1) Determine the paleogeomorphological characteristics of the nearshore subaqueous fan sedimentation in the study area.

[0057] ×× Oilfield ×× Faulted Lacustrine Basin Steep Slope Zone is a steep slope structural zone cont...

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Abstract

The invention relates to a method for dividing a nearshore subaqueous fan glutenite sedimentary unit body, aiming at accurately dividing the nearshore subaquatic fan sandy conglomerate sedimentary unit body in a steep slope zone of a rifted lake basin. On the basis of the study of the sink sedimentary simulation experiment, etc., establish the identification and division standard of the glutenite sedimentary unit body of the nearshore subaqueous fan. Based on the division of seismic data and drilling data of the nearshore subaqueous fan sedimentary unit, and with the time-depth relationship of a single well as the constraint, the inter-well analysis of the nearshore subaqueous fan sedimentary unit is carried out. In contrast, the accurate identification and division of the nearshore subaqueous fan glutenite sedimentary unit in the steep slope zone of the faulted lake basin can accurately and effectively divide the nearshore subaquatic fan glutenite sedimentary unit and determine its spatial distribution range.

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 dividing sandy conglomerate depositional units. 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 been made in the nearshore subaqueous fan glutenite oil and ga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V11/00
Inventor 王艳忠操应长马奔奔程鑫刘海宁齐明明宋丙慧
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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