Shale gas prospective area survey well location deployment method

CN119333127AActive Publication Date: 2025-01-21INST OF KARST GEOLOGY CAGS +1
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Patent Information

Application Number
CN202411669557.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-21
Publication Date
2025-01-21
Estimated Expiration
2044-11-21

AI Technical Summary

Technical Problem

In the southern shale gas vision area, the two-dimensional earthquake coverage is insufficient, the cost is high, and the data quality is poor, resulting in large drilling deployment errors. A low-cost, geophysical survey well deployment method suitable for special geological conditions in the south is urgently needed.

Method used

The wide-area electromagnetic method combined with various geological and geological physical information, through the establishment of the electromagnetic-geological interpretation model, removing multi-solution, explaining the depth of shale and the deeper of the shale, the geological information of the display, and deploying the investigation well according to these information Essence

Benefits of technology

A low -cost and accurate investigation of the well deployment, quickly obtain the shale strata sequence and geological parameters, and support the optimal and commercial exploration of shale gas blocks.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides a well location deployment method for an investigation well in a shale gas prospective area, belongs to the technical field of rock gas well location deployment, and solves the problems that in the prior art, shale gas target stratum prediction is high in multiplicity of solutions, shale target stratum prediction is inaccurate, and cost is controlled. The method comprises the following steps: deploying a wide-area electromagnetic profile based on a cost-detection geological target effect method according to a target area of prospective area geological survey evaluation in combination with regional structure geological conditions; collecting adjacent region or adjacent well logging or stratum electromagnetic information, establishing an electromagnetic-geological interpretation model, analyzing stratum lithologic electromagnetic difference, and providing an interpretation marker bed; a wide-area electromagnetic method comprehensive geological interpretation method is formed in combination with geological background, adjacent geophysical prospecting lines and drilling data, and shale burial depth and distribution geological information of a target layer are interpreted while multiplicity is removed. A wide-area electromagnetic method is utilized and various geological and geophysical information is integrated to remove multiplicity of solutions, and the well location is accurately deployed and investigated at low cost.
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Citation Information

Patent Citations

  • A method and device for identifying shale gas sweet spots

    CN104656157B

  • Shale gas reservoir three-dimensional geologic modeling method

    CN107762493A

  • Shale gas two-dimensional earthquake dessert area optimization method and device

    CN112180443A

  • Shale gas well position optimization method

    CN115045646A