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Geology/Assalam o alaikum


Sir, i am doing BS in geophysics from Bahria university Pakistan. i want to ask you that is there any difference b/w a geologist and a geophysicists? And one more think is that is there a huge jobs available for a geophysicist throughout all over the world?

Usama, Walaikassalam

It is good that you are pursuing Geophysics. A Geologist's job is to find places where the requisites of a petroleum system exist. Based on surface geology he/she may locate places to drill wells. However, to ensure that the structures are continuing in the subsurface we need the help of a Geophysicist (Gyp). It is all the more required in plains and deserts, where the petroleum industry is dependent on Geophysics.

The geophysical surveys like seismic, gravity/magnetic etc help decipher the subsurface and a joint team of Gyp and Geologist finalize the location of wells. The seismic provides a bunch of reflectors wherein a Geologist gives them a meaning in terms of stratigraphy i.e. which rock formation each reflector represents. Once the interpretation is done a Geologist help is important to generate a subsurface model, the presence of structural and stratigraphic traps and their effectiveness. The Gyp then provides the vital information of depth to the objective(s) that results in the well prognosis to start drilling. So a Gyp job is more mechanical, while conceptual/interpretive skills of a Geologist leads to a viable prospect. So both are important members of the team.

I would say that comparatively there is more demand of a Gyp at present. You must develop a good handle on the Industry software for the workstation based interpretation of seismic data.
Learn other graphic software also and improve your English language skills. It will help you in report writing.

Best of luck.


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Nusrat Kamal Siddiqui (Mr)


I am a petroleum exploration geologist with about 40+ years of diversified experience. I can answer questions on stratigraphy, log interpretation, field studies based on set of logs and core results, general geology etc. Can provide guidance for career planning in earth sciences. Can not help in questions about hard rocks, igneous petrology & mineralogy, sequence stratigraphy and seismic.


Petroleum Exploration - field geology, stratigraphy, prospect generation, interpretation of satellite imagery (visual), log interpretation.

Retired in May, 2006 as Senior Manager Exploration from Pakistan Petroleum Limited after serving 26 years. Since then continuing in active service with petroleum exploration companies.A cumulative experience of about 40 years covers 30 years in petroleum exploration, 5 years hydrogeology experience in Libya, and about 5 years of dam geology in Pakistan.

-AAPG Bulletin (Vol.88, July, 2004); paper on Sui Main Limestone (Eocene), a prolific gas reservoir in Pakistan. -Have presented papers on diversified topics ranging from spirituality, flood control, remote sensing and off course geology in France, Nepal, Bangladesh, Sri Lanka, UAE, Kashmir, India and Pakistan that have been published in respective Special Proceedings. -ONGC Bulletin(India) Vol. 44, Number 2, December, 2009; Chapter 19.A & 19.B on basin architecture and stratigraphy of Pakistan, p.402-474.

BSc Honours in Geology and Master of Science in Petroleum and Structural Geology. PGD from ITC, The Netherlands.

Awards and Honors
-Remained Active Member of AAPG from 1990-2006; founding member of PAPG (a local affiliate of AAPG). -Life member of SEGMITE & AGID, and Senior Editor of SEGMITE magazine. -Member of the Board of Studies, i. Department of Petroleum & Gas Engineering (BUITMS, Quetta), and ii. Geology Department, Sindh University, Jamshoro. -Member of Stratigraphic Committee of Pakistan. -Represented Mining Journal, UK in Pakistan till 2007. -Chairman of Annual Technical Conference (ATC)& Oil Show, an SPE/PAPG annual event, in 2003. -Chairman Technical Committee (ATC, 2002).

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