一种多层填充洞穴电阻率反演方法、装置和电子设备
By establishing a multi-layered cavity model and adjusting the resistivity using the nonlinear least squares method, the problem of low accuracy in cavity resistivity inversion in horizontal wells of carbonate rocks was solved, enabling accurate measurement of cavity resistivity and improving the accuracy of reservoir evaluation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA PETROLEUM & CHEMICAL CORP
- Filing Date
- 2022-04-02
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies struggle to accurately invert the resistivity of multi-layered caverns in horizontal carbonate wells, resulting in low evaluation accuracy and impacting the accuracy of cavern logging identification and evaluation.
A multi-layered cavity resistivity inversion method is adopted. By establishing cavity models with different filling types, the location and size of the cavities are identified using well logging curves. The initial resistivity value is adjusted by combining nonlinear least squares method to eliminate the influence of formation bedrock and well inclination angle, thereby achieving accurate resistivity inversion.
It improves the accuracy of cave resistivity, enhances the ability to finely evaluate porous carbonate reservoirs, and strengthens the quantitative characterization of cave electrical properties.
Smart Images
Figure CN116973630B_ABST