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Carbonate rock erosion hole distribution prediction method and device

A technology for dissolving pores and prediction methods, which is applied in the field of geological exploration and oil and gas exploration, and can solve the problems such as no method and process for predicting the distribution of dissolution pores in carbonate rocks.

Active Publication Date: 2019-12-31
PETROCHINA CO LTD
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Problems solved by technology

However, there is no well-formed and reliable prediction method and process for the distribution of dissolved pores in carbonate rocks

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  • Carbonate rock erosion hole distribution prediction method and device
  • Carbonate rock erosion hole distribution prediction method and device
  • Carbonate rock erosion hole distribution prediction method and device

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[0125] In order to have a clearer understanding of the technical features, purposes and beneficial effects of the present invention, the technical solution of the present invention will be described in detail below in conjunction with the following specific examples, but it should not be construed as limiting the scope of the present invention.

[0126] This embodiment provides a method for predicting the distribution of dissolved pores in carbonate rocks, wherein the method for predicting the distribution of dissolved pores in carbonate rocks includes:

[0127] Step 1. Determine the development range of the penecontemporaneous dissolution vugs;

[0128] Step 2, determine the development range of buried dissolution pores;

[0129] Step 3. Predict the distribution area of ​​dissolution pores.

[0130] In one embodiment, in step 1, the determination of the development range of the quasi-contemporaneous dissolution pores includes:

[0131] Step 11, determining the genetic type ...

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Abstract

The invention provides a carbonate rock erosion hole distribution prediction method and device. The carbonate rock erosion hole distribution prediction method comprises the following steps that: 1, aquasi-syngenetic period corrosion hole development range is determined; step 2, a buried corrosion hole development range is determined; and 3, a corrosion hole distribution area is predicted. According to the carbonate rock erosion hole distribution prediction method and device of the invention, the characteristics and distribution rules of quasi-syngenetic corrosion holes, surface karst corrosion holes and buried corrosion holes are defined on the basis of corrosion simulation experiments; technologies such as a corrosion simulation experiment, lithofacies paleo-geographical recovery, sedimentary paleo-geomorphic reconstruction and fracture system identification are integrated; related basic drawing types and specifications are formulated; a prediction process is established; the qualitative / semi-quantitative prediction of the distribution of carbonate rock corrosion holes is realized; and a technical support is provided for high-efficiency and high-quality reservoir evaluation.

Description

technical field [0001] The invention relates to a method and device for predicting the distribution of dissolved pores in carbonate rocks, and belongs to the technical fields of geological exploration and oil and gas exploration. Background technique [0002] Due to the high chemical activity of carbonate rocks, in addition to sedimentary primary pores (intergranular pores, body cavity pores, etc.), dissolution pores are very important components of carbonate rock storage space, especially after long-term diagenetic superimposed reformation. of ancient carbonates (Clyde H. Moore, 2001). Dissolution pores can be formed in sediment exposure and dissolution related to high-frequency sea level changes (Shen Anjiang et al., 2015), or in rock exposure and karstification related to tectonic movements (Zhao Wenzhi et al., 2013). In burial dissolution related to organic acids, TSR, and hydrothermal fluids (Zhang Shuichang et al., 2011). Different genetic mechanisms determine the di...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/30G01V1/50
CPCG01V1/306G01V1/50
Inventor 沈安江乔占峰佘敏张杰胡安平王鑫张建勇倪新锋
Owner PETROCHINA CO LTD
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