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Geology/Differentiate formation water & condensed water with respct to water salinity (cl values) in Lower goru B & C sands


Assalm alekum Sir,

I hope you will be fine. Sir, How could you Differentiate formation water & condensed water with respect to water salinity (cl values) if the well is producing gas from Lower goru B-Sand or C-Sand. Is there any cl range or limit by experience? For instance 0-3000 ppm can be condensed water and anything > 3000 ppm will be formation water. Certainly you will see WGR and other parameters as well but I want to know with respect to cl values or salinity of free/formation water in these sands.

Best Regards,



I am not an expert for the region you are talking about. However, as I know the salinity of the formation water is around 65000 ppm.

Below are some references from the ATC Proceedings.

Study On Oil & Gas Distribution In The Badin Block   by Sayeed Ahmad   (1999)

Zaur Structure - A Complex Trap In A Poor Seismic Data Area by   S.M. Mozzaffar Alam,M. Wasimuddin, S.M. Sayeed Ahmad   (2002)

You will find some more papers on Badin area in the many ATC Proceedings, where you may be able to find answer to your specific query and other questions you may have.


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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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