Dresden 2003 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

CPP: Chemische Physik und Polymerphysik

CPP 21: POSTER B

CPP 21.12: Poster

Dienstag, 25. März 2003, 19:00–21:00, ZEU/250

A pV/n-Model for the Development of Petroleum Reservoir Pressure by Degradation of Biological Macromolecules in situ. — •Hermann M. M. KILLESREITER — Lecturer ex offic./Guest Listener TUC, D-38678 CLAUSTHAL-ZELLERFELD

Coal as well as oil have once been generated from fossils. The internal pressure of petroleum reservoirs is ascribed to the weight of overlaying earth material [e.g. TABER in No-dqENHANCED OIL RECOVERYNo-dq, 1981]. This contribution will remember the carbonizing of wood, yielding also liquid and gaseous products. With pV/n=const. will qualitatively be derived the internal pressure as the result of a huge increasing number of molecules due to degradation of biological macromolecules.

The principles follow for an assembly of rather unknown components monomolecular decay dm/dt with the result m(t)=m(0)exp(-kt), k beeing a rate constant in geological scales. Neglecting any changes of internal attractions, as an overall example may hold: organic material contains typically about 80 % proteins with molecular weights of about 30.000 g/mole [SCHNEPF in No-dqBIOPHYSIKNo-dq, 1977]. Soft cracking into small molecules with MG within 30 - 300 g/mole will yield usually found reservoir pressures within the range from 100 to 1000 bars. By diffusion of gaseous components can also be explained low lying heavy oil reservoirs [KILLESREITER, Patent publication P 3813014.9, 1989].