3 DSTRUCTURAL MAP implementing a fictive topographic surface

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3 DSTRUCTURAL MAP implementing a fictive topographic surface: the well-topography built-up by the iso-TVDSS

3 DSTRUCTURAL MAP implementing a fictive topographic surface: the well-topography built-up by the iso-TVDSS curves September 1999 Abdelkader Saadallah Dr. Structural Geologist Kampensgate 34 4024 Stavanger Norway Tlf. 00 47 51 53 83 82 E-mail: abdelk-s@online. no

PURPOSES 3 D-Structural model of a field n A tool to predict well path

PURPOSES 3 D-Structural model of a field n A tool to predict well path of a new drill n Abdelkader Saadallah Dr. Structural Geologist E-mail: abdelk-s@online. no

3 D-Dimension: TVDSS Plotting the well tracks n Plotting the TVDSS curves n Defining

3 D-Dimension: TVDSS Plotting the well tracks n Plotting the TVDSS curves n Defining a topographic surface: well-topography n Drawing the well-topography n Abdelkader Saadallah Dr. Structural Geologist E-mail: abdelk-s@online. no

Iso-TVDSS curves -7590 ft -7600 -7610 -7620 -7630 -7640 -7660 -7650 -7670 Well-track &

Iso-TVDSS curves -7590 ft -7600 -7610 -7620 -7630 -7640 -7660 -7650 -7670 Well-track & MD Abdelkader Saadallah Dr. Structural Geologist E-mail: abdelk-s@online. no

Adding geologic and structural data Stratigraphic break-downs n Faults n Dips n. . .

Adding geologic and structural data Stratigraphic break-downs n Faults n Dips n. . . n Abdelkader Saadallah Dr. Structural Geologist E-mail: abdelk-s@online. no

Geologic Units Unit 1 Unit 2 Unit 3 Unit 4 Iso-TVDSS curves Well-track &

Geologic Units Unit 1 Unit 2 Unit 3 Unit 4 Iso-TVDSS curves Well-track & MD Abdelkader Saadallah Dr. Structural Geologist E-mail: abdelk-s@online. no

Finishing the structural map Drawing the geologic boundaries n Interpolation between the welltracks n

Finishing the structural map Drawing the geologic boundaries n Interpolation between the welltracks n Abdelkader Saadallah Dr. Structural Geologist E-mail: abdelk-s@online. no

Iso-TVDSS curves Well-track & MD Abdelkader Saadallah Dr. Structural Geologist E-mail: abdelk-s@online. no

Iso-TVDSS curves Well-track & MD Abdelkader Saadallah Dr. Structural Geologist E-mail: abdelk-s@online. no

DRAWING GEOLOGIC CONTACTS ON THE MAP Projection of the geologic boundary True dip of

DRAWING GEOLOGIC CONTACTS ON THE MAP Projection of the geologic boundary True dip of a geologic boundary Projection of the iso-TVDSS planes Projection on a vertical plane perpendicular to the strike of the geologic boundary d a h Tg a = h / d Geologic contact on the map Abdelkader Saadallah Dr. Structural Geologist E-mail: abdelk-s@online. no Projection on the map

Predicting a well-path of a new drill First draft and choice of kickoffs n

Predicting a well-path of a new drill First draft and choice of kickoffs n Defining a survey log n Plotting the predict well-track n Last finish n Abdelkader Saadallah Dr. Structural Geologist E-mail: abdelk-s@online. no