POSTINGAN SELANJUTNYA: MENERAPKAN DIAGRAM TERNER AN-CPX-OPX UNTUK IDENTIFIKASI BATUAN BASA
CONVERT MUDLOG LITHOLOGY DESCRIPTION FROM IMAGE TO EXCEL BY USING CATGEOKU SOFTWARE
Working with mudlog data in description form can be exhausting — writing every top, bottom, and lithology into Excel takes too much time. With our tool, you can instantly turn descriptions into structured, editable data (see Figure 1). No more manual typing, no more wasted hours.
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Make your workflow smarter. Try our product today!
Figure 1. Step-by-step conversion of mudlog lithology descriptions from images to Excel
Drag & Drop Your Mudlog Lithology Description
Drop or click to upload mudlog image
Extraction Results:
THE MOHR-COULUMB FAILURE CRITERIA AND MOHR'S CIRCLE
Things to note before using this tool are:
1. This tool aims to help determine the Mohr circle in relation to the failure envelope line and the value of the plane orientation in relation to the principal stress axis
2. Rock stability occurs when the Mohr circle does not touch the failure envelope line.
3. Rock conditions are fractured when approaching the failure envelope line.
4. Rock conditions are broken when crossing the failure
Mohr–Coulomb Diagram (Full Circle, Scale X=Y)
Mohr–Coulomb Diagram (Full Circle, Scale X=Y)
DETERMINE TOP OF OVERPRESSURE AND STRESS REGIME BY USING CATGEOKU SOFTWARE
Before using these tools, there are several things that must be understood:
1. Normal Shale Porosity data can be obtained from uncompacted sonic logs, laboratory data, or literature data.
2. Biot's Coefficient data can be obtained from laboratory data or literature data.
3. ΔPis the difference between Pore Pressure and Hydrostatic Pressure values
4. Bulk Density data can be obtained from RHOB logs, but must first be converted to kg/m³.
5. Shale porosity data can be obtained from DT logs.
6. Data for validating overpressure can be obtained from MDT or DST.
7. Shmin data can be obtained from Mini-frac/leak-off tests (LOT, MDT, RFT) or borehole breakouts.
8. Shmax data is obtained by using geomechanical data and rock properties.
Pore Pressure, Hydrostatic & Overburden Stress vs Depth
DETERMINE TOP OF OVERPRESSURE AND STRESS REGIME BY USING CATGEOKU SOFTWARE
Copy-paste from Excel (TVD (m), Bulk Density (kg/m³), Shale Porosity (%)):
Copy-paste for Shmin and Shmax from Excel (TVD (m), Shmin (Psi), Shmax (Psi)):
Data Validation (TVD (m), Pressure (Psi)):
Refference:
Zhang, Jon. (2013). Effective stress, porosity, velocity and abnormal pore pressure prediction accounting for compaction disequilibrium and unloading. Marine and Petroleum Geology. 45. 1-15.
Markou, Nikolaos & Papanastasiou, Panos. (2018). Petroleum geomechanics modelling in the Eastern Mediterranean basin: Analysis and application of fault stress mechanics. Oil & Gas Science and Technology. 73. 57.
WELL DEVIATION CALCULATION
This tool can help convert MD data to TVD, especially for wells with deviation. The main data used for conversion are depth, inclination, and azimuth. The final output is a 2D and 3D representation of the well.
The conversion results can be downloaded in Excel format. Some terminology to note in this tool is:
1. Inclination: the angle formed between the well trajectory and the horizontal plane
2. Azimuth: the angle formed between the north wind direction and the well position, calculated clockwise
3. Vertical Section Azimuth (VS Azimuth): a visual representation of the direction of the drill hole in directional drilling, showing changes in the azimuth (horizontal direction) of the drill hole as vertical depth increases
Survey Deviasi Sumur - 2D & 3D
Input Data Survey
Format: MD,INC,AZI (separated by commas, one line per data)
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