Method for forecasting carbonate reservoir based on forward modeling of digital geological outcrop model

A carbonate rock reservoir, carbonate rock technology, applied in seismic signal processing and other directions, can solve the problems of low precision, large manpower and equipment resources, etc.

Active Publication Date: 2012-10-31
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

[0004] In the process of seismic inversion, trial and error is required to achieve the best results, requiring a lot of manpower and equipment resources; moreover, a large amount of drilling data and high-precision logging data such as so...

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  • Method for forecasting carbonate reservoir based on forward modeling of digital geological outcrop model
  • Method for forecasting carbonate reservoir based on forward modeling of digital geological outcrop model
  • Method for forecasting carbonate reservoir based on forward modeling of digital geological outcrop model

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specific Embodiment approach

[0054] 1) Geological maps, satellite photos, surface elevation maps, and geological data of the exploration area, and the Xickel carbonate geological outcrop area with relatively developed karst is selected as the research object;

[0055] 2) Use a 3D laser scanner to collect geological outcrops with a resolution of 10mm, and take pictures of the outcrop areas in all directions and positions at the same time;

[0056] 3) Carry out actual measurement of geological profiles in the outcrop area;

[0057] Select a number of typical locations in the outcrop area, establish a series of measured geological profiles, stratigraphic comprehensive histograms, sedimentary facies profiles, and geological body descriptions through field measurements, lithology observation descriptions, and rock sampling, and then complete lithology comparison maps and sedimentary correlations. Comparing maps and establishing artificial wells;

[0058] 4) The rock samples are subjected to laboratory analysi...

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Abstract

The invention discloses a method for forecasting a carbonate reservoir based on forward modeling of a digital geological model, and is characterized by comprising the following steps: in petroleum geological exploration, through a field carbonate geological outcrop collecting and data processing technology and combination with an actually-measured geological section, establishing a three-dimensional digital geological model of an outcrop area, according to an outcrop rock speed analysis chart and a drill speed data, establishing a speed model of the carbonate reservoir with different physical properties on the basis of the three-dimensional geological model, carrying out two-dimensional forward modeling and three-dimensional forward modeling, carrying out offset horning process on earthquake forward modeling data so as to obtain three-dimensional offset data or a two-dimensional offset section of the earthquake forward modeling, establishing reflecting characteristics of different carbonate reservoirs according to response characteristics of the earthquake section, and forecasting the carbonate reservoir. According to the invention, qualitative forecasting of the carbonate reservoir can be realized without a regular earthquake inversion, a large amount of manpower and device resources are saved, reliability and precision of forecasting of the carbonate reservoir in the earthquake are effectively improved, exploration and development risk can be reduced, and benefit is increased.

Description

technical field [0001] The invention relates to geophysics and geological technology, and belongs to a carbonate reservoir prediction method based on digital geological outcrop model forward modeling in geological exploration and oil and gas exploration research. Background technique [0002] Carbonate rocks are rich in oil and gas reserves, but the carbonate rocks themselves are relatively complex, oil and gas are obviously controlled by reservoirs, and reservoir types are diverse and heterogeneous, making reservoir prediction difficult. [0003] In the past, the reservoir prediction in oil and gas exploration was mainly based on seismic data to determine the seismic geological horizon, then seismic inversion, seismic wavelet extraction, seismic synthetic record calibration, seismic and logging combined to establish an initial wave impedance model, and Constantly debug and modify the model to achieve the best, and finally carry out wave impedance inversion to obtain wave im...

Claims

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Application Information

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IPC IPC(8): G01V1/28
Inventor 王贵重徐礼贵康南昌王春阳王志勇马培领赫英福
Owner BC P INC CHINA NAT PETROLEUM CORP
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