Giovanni Paccaloni joined ENI-AGIP in 1971. Technical and leadership roles included Manager Production Optimization Technologies, VP Corporate E&P Laboratories, VP Drilling, Production Optimization and Subsurface Geology; VP R&D and Technology Planning.

An SPE member since 1986, Paccaloni served as Chairperson of the Italian Section, SPE Director Europe and Africa Region, Chairperson of the Forum Series Implementation Committee, the Forum Series Coordinating Committee  and the 1992 Forum Series in Europe Steering Committee. He was SPE Distinguished Lecturer during 1988-89 on 'Optimization of Matrix Stimulation Treatments’, was awarded the SPE Distinguished member (2000), and at the next ATCE in New Orleans will receive the prestigious SPE Honorary member Award.

Giovanni served as the 2005 SPEI President.

Paccaloni is the inventor of both the first real-time Matrix Stimulation Method, and the MAPDIR stimulation technique (winner of the AGIP-ENI Technological Development Award 1997).

He has authored several technical papers, including articles published in the JPT and SPEPE. Paccaloni holds an MS degree in Industrial Chemistry from the University of Bologna. He retired from ENI in 2006.