Petroleum migration was classified into direct and indirect migration based on the studying of its migrating characteristics and the classification of passage system.
6.Passage systems of petroleum migration and accumulation of the transitive stage of fault sag in fault basin included rupture passage system, sandstone passagesystem, surface of unconformity passage system and complex type passage system.
While in the post-reservoiring adjustment period(K_2-Q),the framework of carrier system was basically high in the east and north and low in the west and south,and the major carrier system consisted of sandbody and fractures.
At the critical reservoiring period(J_3-K_1),the framework of carrier system was high in the west and north and low in the east and south,and the major carrier system consisted of sandbodies,faults and fractures. Hydrocarbons migrated northwestward with high delivery efficiency.
While for lithologic gas reservoirs in craton basins and gas reservoirs in slope zones of foreland basins,sandbodies act as the main carrier system,and hydrocarbons migrate both laterally and vertically with relatively long migration distance and low delivery efficiency.
Sulige gas field is of lithologic gas reservoirs in craton basin,its main carrier system is of sandbody type,with a few fault type and sandbody-fault type carrier systems.
The evolution history,oil source,filling time and carrier system in Babei-I trap of northern margin of Qaidam basin are analyzed. It is indicated that from Late N1 to Early N2,oil generated from Middle Jurassic hydrocarbon source rocks in Gaqiu sag migrated to the shallow layer(<1 000 m) of Well Mabei-1 within Mabei-I trap and Mabei-III trap.
Five episodes, asⅡ Episode of Indo-Chinese epoch ( Late Triassic), Ⅱ Episode of Yan Shan ( Late Jurassic), Ⅳ Episode of Yan-shan ( Late Cretaceous), Ⅱ Episode of Himalayan ( Late Eocene) and Ⅲ Episode of Himalayan ( Late Neogene), are divided preliminarily according to the main tectonic phase, oil generation period, transport system and reservoir-formation period of oil and gas fields.
reservoir formation was directly influenced by transport system; oil/gas reservoirs are mainly composed of small and micro size ones; and the P 2 l sandstones,P 2 ch limestones,T 3 a sandstones and Cretaceous bottom conglomerates are the major target zones of oil/gas occurrence.
The Jurassic was divided into 7 sequences according to the theory and method of high-resolution sequence stratigraphy and the hydrocarbon transport system of Jurassic in Taibei Sag was composed of faults, reservoirs and sequence interfaces.
So we think there are mainly 4 factors controlling reservoir formation comprising ofeffective source rock as the base, transport system as the key for its formation, inheritedstructure as the favorable space and sealing condition leading to its abundance.
4. Throuth the case studying of Shuanghe oil field ,this paper point out that the reservoir transport system especially the sandstone transport system has relevant to the evolution of sequence,the evolution of sequence controlling the permeate ability and oil filling ability of reservoir route.
Presently, a further study of dynamic reservoiring processes need the reservoiring theory regarding the migration pathway system as key factor so as to predict effectively oil and gas reservoirs.
Sediment in the Sleeping Bear Point-Manitou Passage system is not restricted to available grain sizes and the environments discriminated very well (α >amp;lt; 0.001).
A phenomenological model of the band spectrum in normal phase has been used to determine the parameters of the conduction band and of the carrier system, and to analyze their variation with the dopant type and content, as well as with annealing.
The results obtained are analyzed within the narrow band model, and the parameters of the band structure and charge carrier system in the samples are determined.
The parameters of the band spectrum and charge carrier system for samples of a close-to-optimum composition are determined by analyzing the temperature dependences of the thermopower coefficient within the narrow band model.
In conclusion, the improved carrier system for the transdermal clonidine treatment reduced local side-effects which in turn may further enhance acceptability and compliance in treated patients.
A mathematical model of the transport system of a city or an urban agglomeration intended for forecasting the transport and passenger flows was described.
The mechanisms of functional asymmetry of structurally symmetric branches of the electron transport system are analyzed in this work within the framework of the theory of bimolecular charge-transfer complexes (CTC).
We have tested the new in silico model by studying two different branching concepts: an inclusive (all airways present) system and a single "typical" pathway system.
We also discuss predictions of our model for developmental system drift and how different selective regimes affect probabilities of speciation in the branched pathway system.
输导体系
passage system
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