UTILITY OF RIGHT EXPLORATION TOOLS IN THE TWO JURASSIC BASINS:MARIB-SHABWA-HAJAR AND MASILA,LEAD TO BETTER HYDROCARBON DISCOVERIES.

YEMEN GEOLOGICALSOCIETY

SANA,A     UNIVERSITY

22-4-2003

WHAT ARE EXPLORATION TOOLS?

*LANDSAT.

*GEOLOGICAL SURVEY.

*STRUCTURAL SURVEY.

*AEROMAGNETIC SURVEY.

*GRAVITY SURVEY.

*SEISMIC SURVEY (2D, 3D).

*GEOCHEMICAL SURVEY.

*DRILLING.

SEDIMENTARY BASINS.

TWO JURASSIC BASINS:

MARIB-SHABWA-HAJAR AND MASILA

MASILA BASIN.

HYDROCARBON PLAY.

PLAY= S.R; RES R; SEAL;

TRAPS; MIGRATION

TIME

.

PETROLEUM SYSTEM= RELATION BETWEEN S.R AND RESERVOIR ROCKS.

MARIB-SHABWA-HAJAR PLAY AND PETROLEUM SYSTEM.

CONCLUSION

Landsat and seismic showed structural coincidence between surface structures and Qishn Clastics in the Masila Basin

Gravity gives better results in the Marib-Shabwa-Hajar Basin due to the presence of salt ( Halite).

Horizontal drilling is found to be effective in the thin multi-layer pay zones in the Masila Basin.