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sir i want to ask two questions, first i want to know about the exploration history of Lower Indus Basins and major oil and gas discoveries made up till now . my second question is that is this possible to mark the sequence stratigraphic surfaces like MFS and TS on well logs , like when we have no other data except well logs???
kind regards .


In Lower Indus Basin the first major discovery was made at Mari from Habib Rahi in 1957, which is the biggest after Sui that was made in 1952.

In Badin area the first oil discovery was made at Khaskeli-1 in 1981. Lower Goru sands (Lower Cretaceous)was for the first time proven to be an exploratory target. Since then 81 oil and gas discoveries have been made by drilling 160 exploration well by UEP (earlier called UTP). OGDCL and OPII have also made several discoveries.

Later OMV made a significant gas discovery at Miano in 1993, followed by another good gas discovery at Sawan and many others in Lower Goru. In Kirtahr Range ENI made the break through where the Pab sandstone was proven a target for gas. Discoveries were made at Bhit, Zamzama ets.

Yes, logs are important in marking sequence boundaries. Shale represents an environment of maximum flooding. So the top of a sand bed overlain by thick shale represents a MFS. GR and Density-porosity logs are the best to interpret sequence boundaries.


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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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