Fine prospecting method for slope zone of sag rich in oil and gas

A slope, oil and gas technology, applied in the field of exploration, oil and gas exploration, to achieve the effect of reasonable design, easy to standardize the operation process, and comprehensive consideration of factors

Inactive Publication Date: 2017-12-01
DAGANG OIL FIELD OF CNPC
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Problems solved by technology

However, under the high degree of exploration, the main problem in the fine exploration of slope zones is how to subdivide the evaluation units

Method used

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  • Fine prospecting method for slope zone of sag rich in oil and gas
  • Fine prospecting method for slope zone of sag rich in oil and gas
  • Fine prospecting method for slope zone of sag rich in oil and gas

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] see figure 1 , a fine exploration method for oil-gas-rich sag slope zones,

[0030] Data collection: This research method is based on large-scale 3D contiguous seismic data, collecting the latest 3400km of Qikou Sag 3D seismic data 2 , 1,031 wells were drilled, 956 well logging and mud logging data, and 13,021 various test and laboratory data.

[0031] The basic geological reconstruction and quantitative demonstration of the Qikou Sag are divided into...

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Abstract

The invention relates to a fine prospecting method for a slope zone of a sag rich in oil and gas, and belongs to the technical field of oil and natural gas prospecting. The method comprises the steps of 1) basic geological reconstruction and quantitative characterization of a sag rich in oil and gas, and slope unit division; 2) internal fine division of the slope zone; and 3) fine evaluation of the slope zone under a high-resolution sequence framework, extraction of the "oil source fault + lithologic trap joint reservoir control + favorable sand body" from the three key elements of the oil and gas source, migration pathway and sedimentary facies, and comprehensive identification of enrichment high-yielding areas. The method of the invention adopts a global to local method to gradually refine the research target, has the characteristics of comprehensive considerations and easy standardization of operation procedures, can effectively identify high-efficiency reserve areas, and provides technical support for oil and gas exploration and development.

Description

technical field [0001] The invention relates to an exploration method, in particular to a fine exploration method for a slope zone in an oil-gas-rich sag, and belongs to the technical field of oil and gas exploration. Background technique [0002] Faulted basins are the main type of oil-gas-bearing basins in eastern my country. Their main feature is the development of multiple single-faulted or double-faulted dustpan-shaped sags. The slope belt is an important structural unit and the main direction of oil and gas migration. With more than 40 years of large-scale exploration and development, it has reached a high maturity stage, and it is becoming more and more difficult to discover structural oil and gas reservoirs. Stratigraphic-lithological oil and gas reservoirs in slope zones have become an important area for large-scale reserve increase in the Bohai Bay Basin. Although most of the exploration areas have entered the high-exploration stage, in recent years, through the fi...

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Application Information

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IPC IPC(8): G01V1/28G01V1/30G01V1/40
CPCG01V1/28G01V1/306G01V1/40G01V2210/6169G01V2210/624
Inventor 赵贤正周立宏蒲秀刚金凤鸣姜文亚肖敦清陈长伟韩文中杨飞张伟柳飒时战楠王建柱牟智全曲宁代昆邹磊落
Owner DAGANG OIL FIELD OF CNPC
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