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A method for simulating and calculating the porosity of clastic rock reservoirs based on diagenetic facies logging identification technology

A technology of simulation calculation and identification technology, which is applied in the direction of measuring device, geophysical measurement, suspension and porous material analysis, etc., and can solve problems such as reservoir porosity and permeability parameters that have not been further studied in diagenetic facies logging

Active Publication Date: 2020-09-04
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] At present, the discriminant model of reservoir diagenetic facies has been studied through a variety of logging data, but no further detailed research has been done on diagenetic facies logging and the relationship between diagenetic facies logging data and reservoir porosity and permeability parameters

Method used

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  • A method for simulating and calculating the porosity of clastic rock reservoirs based on diagenetic facies logging identification technology
  • A method for simulating and calculating the porosity of clastic rock reservoirs based on diagenetic facies logging identification technology
  • A method for simulating and calculating the porosity of clastic rock reservoirs based on diagenetic facies logging identification technology

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Experimental program
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Embodiment 1

[0210] The method for simulating and calculating the porosity of clastic rock reservoirs based on diagenetic facies logging identification technology includes the following steps:

[0211] 1) Collect geological data in the study area

[0212] (1) Geological data of the research area, including core, mud logging information, thin section identification report, casting thin section data, inclusion analysis and test data, etc.;

[0213] (2) Well logging data in the study area, including borehole caliper (CAL), compensated neutron logging (CNL), density logging (DEN), deep / shallow lateral resistivity (RLLD / RLLS), natural gamma ray ( GR), natural gamma ray spectral logging (U, Th, K), acoustic time difference (AC) and photoelectric interface absorption index (PE) data;

[0214] (3) The burial history, thermal evolution history and fluid history of the study area.

[0215] 2) Establish diagenesis database

[0216] During the burial process, a diagenesis database was established a...

Embodiment 2

[0409] A method for simulating and calculating the porosity of Tertiary lacustrine clastic rock reservoirs in Bozhong Sag based on diagenetic facies logging identification technology,

[0410] The data of diagenetic facies are obtained by using the logging data in the study area, and then the parameters of each diagenesis model are determined according to the data of diagenesis type, intensity, burial depth history and geothermal history in the study area, and finally the porosity of the study area is simulated and calculated, the specific steps are as follows:

[0411] 1) Collect geological data in the study area

[0412] The collected geological data include the following:

[0413] ①Geological data of the research area, including cores, mud logging information, thin-section identification reports, casting thin-section data, etc.;

[0414] ② Well logging data in the study area, including borehole caliper (CAL), compensated neutron logging (CNL), density logging (DEN), deep / s...

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Abstract

The invention discloses a simulating calculation method for porosity of a clastic rock reservoir on the basis of a diagenetic facies logging identification technology. According to the method, diagenetic facies in a research area is researched in a detailed manner with the diagenetic facies logging identification technology, so that a PDFP (present diagenetic facies profile) of the research area is established, and finally, porosity of an interval of clastic rock is subjected to simulating calculation through combination with burial history, thermal history, fluid history and pressure historyof the research area.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploration and development, in particular to a method for simulating and calculating the porosity of clastic rock reservoirs based on diagenetic facies logging identification technology. Background technique [0002] Well logging is a method of measuring formation geophysical parameters by using the electrochemical characteristics, electrical conductivity characteristics, radioactivity and other geophysical characteristics of rock formations. Well logging is widely used in the whole process of petroleum geology and oilfield exploration and development. Using logging data, stratigraphic sections can be divided, stratum thickness and burial depth can be determined, reservoirs can be identified, oil, gas and water layers can be identified, regional stratigraphic comparison can be carried out, and the main mineral components, porosity, permeability and oil and gas saturation of strata can also be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/08G01V11/00
CPCG01N15/088G01V11/00
Inventor 张昌民钱文蹈尹太举侯国伟何苗陈哲夏敏
Owner YANGTZE UNIVERSITY
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