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Method for judging mantle-derived CO2 charging time

A discrimination method, CO2 technology, applied in geophysical measurements, instruments, etc., to achieve the effect of high precision, small error and wide application

Inactive Publication Date: 2014-01-22
CHINA UNIV OF PETROLEUM (EAST CHINA) +1
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Problems solved by technology

However, when there are multiple periods of volcanic activity and fluid charging in the basin and surrounding areas, simply citing the age of volcanic eruptions cannot truly determine the mantle-derived CO 2 For example, there were two phases of oil and gas charging events in the middle and shallow layers of the southern Songliao Basin, and the charging times were 85-65Ma and 50-25Ma respectively (Non-Patent Document 9); the inner and surrounding areas of the Songliao Basin The Late Cretaceous Datun Volcanic Group (92.3Ma), the Paleogene Shuangliao Volcanic Group (51.0-41.6Ma) (Non-Patent Document 10) and the Quaternary Wudalianchi Volcanic Group (0.56-0.27Ma, 1719- 1721a and 1721a) (Non-Patent Document 11) represented three phases of volcanic activity

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  • Method for judging mantle-derived CO2 charging time
  • Method for judging mantle-derived CO2 charging time
  • Method for judging mantle-derived CO2 charging time

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Embodiment Construction

[0022] The experimental methods used in the following examples are conventional methods unless otherwise specified.

[0023] Mantle-sourced CO 2 The application of the filling time mineral dating method in the southern Songliao Basin is further illustrated.

[0024] 1. Determine the diagenetic paragenesis sequence of dawsonite-bearing sandstone

[0025] In the southern Songliao Basin, dawsonite authigenic minerals are mainly distributed in the Huazijing Terrace and the fourth member of the Quantou Formation in the Fuxin Uplift, the third member of the Qingshankou Formation in the Changling Sag, and the Qingshankou Formation-Yaojia Formation in the Honggang Terrace and in the sandstone of the third member of the Nenjiang Formation. The rock types of dawsonite-bearing sandstone are mainly feldspar sandstone, feldspathic lithic sandstone and lithic feldspar sandstone. Polarizing microscope and scanning electron microscope observations showed that CO 2 The authigenic mineral a...

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Abstract

The invention provides a method for judging mantle-derived CO2 charging time, and belongs to the field of oil and gas geology. According to the invention, the cause of formation of dawsonite is judged by creating a diagenetic intergrowth sequence of sandstone containing dawsonite, so as to determine the sequential relationship of charging of mantle-derived CO2 and oil and gas, judge the charging time of oil in sandstone containing different types of dawsonite and finally judge the mantle-derived CO2 charging time to obtain the mantle-derived CO2 charging time. According to the invention, the mantle-derived CO2 charging time is judged according to the dawsonite, so that an effective and accurate method is provided for judging the charging time of the mantle-derived CO2 in a petroliferous basin having multi-phase volcanic activities and filled with fluid.

Description

technical field [0001] The invention belongs to the field of petroleum and natural gas geology, in particular to a mantle source CO 2 Discrimination method of filling time. Background technique [0002] Mantle-derived CO in sedimentary basins 2 The charge time is for CO 2 -Sandstone interaction and CO 2 - Fundamentals of Crude Oil Interaction Studies. Most of the world's CO 2 The formation of gas (reservoir) fields is related to magmatic activity, and CO 2 Most of the gas (reservoir) fields and the volcanic rocks related to them are spatially adjacent or communicated with transport channels. The former is like the nine under-developed or abandoned CO 2 gas field (non-patent document 1), the Hua 17 and Yang 25 gas pools in the Bohai Bay Basin, and the Gaoqing gas field (non-patent document 2); ). Inorganic CO of commercial value currently found in eastern China 2 Gas fields are all of mantle-magmatic origin (Non-Patent Document 4), such as Wanjinta CO in the southern...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V9/00
Inventor 曲希玉刘立刘娜于淼宋土顺
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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