Petroleum charge yield modelling in a Chinese Lacustrine Basin
Petroleum charge is a critical factor within the framework of Risk, Volume and Value addressed during the evaluation of the hydrocarbon resource of any basin. In the Liaodong Bay Basin, People`s Republic of China, a methodology was developed to describe the uncertainty in predicted charge yields from identified source rocks in terms of confidence levels (Risk), quantitation (Volume, Value) and petroleum composition (Value) in a fit-for-purpose manner. The approach taken was to: (1) define equations to calculate the mass of generated and expelled trappable petroleum per Km{sup 2} of source rock within the oil and gas maturity windows, accounting for gas derived from thermal breakdown of kerogen and oil-to-gas cracking in the kitchen, (2) identify value ranges of parameters within the equations from available and analogue data, such as source rock thickness and potential, (3) run spreadsheet-based Monte Carlo simulations of the generation-expulsion equations to calculate yield ranges of oil and gas, and (4) apply yield ranges with their associated confidence levels, to mapped source rock kitchens. The result is a range of maximum trappable, oil and gas yields with associated confidence levels. These must then be modified by the modelled maturity of the source rock kitchen/s - clearly an originally oil-prone source rock in the present day gas window has most likely already realized its maximum oil yield but not necessarily its maximum gas yield.
- OSTI ID:
- 425469
- Report Number(s):
- CONF-960527-; TRN: 96:004994-0100
- Resource Relation:
- Conference: Annual convention of the American Association of Petroleum Geologists, Inc. and the Society for Sedimentary Geology: global exploration and geotechnology, San Diego, CA (United States), 19-22 May 1996; Other Information: PBD: 1996; Related Information: Is Part Of 1996 AAPG annual convention. Volume 5; PB: 231 p.
- Country of Publication:
- United States
- Language:
- English
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