delta front

among them , underwater distributary channel in delta front was the main facies.

Heterogeneity parameters indicate that the heterogeneity of subaqueous distributary channel of (fan) delta-front is the most serious.

The braid delta included delta plain, delta front and prodelta subfacies, and they were further divided into a few of microfacies.

In literally, there shows the evolution trend from northeast and southwest distributaries channel sand to delta front far bar sand.

the transgressive systems tracts develops retrograding delta and delta front slumping turbidity fan.

The sand bodies located in distributary channel of lake facies delta plain and river mouth of delta front are favorable reservoir beds.

The sandstone and mudstone were developed alternatively in the delta front belts and controlled the overall oil-bearing area.

But the coalbed formed in delta front bar is thinner and is unstable in distributary channel.

The subaqueous distributary channel is the main type of the fan delta front while the channel mouth bar is developed locally.

Every little delta front still annually to the speed of 100 meters toward the sea.

In plane, delta front develops well and the main microfacies is under-water channel, while river-mouth bar and distal bar not develop well.

The sand body of the delta-front sandbar is the best reservoir.

During the abandonment period of delta, sediments of delta front were usually rebuilt by tidal action.

It has a two-layer structure, i. e. braid-river delta plain subfacies and braid-river delta front subfacies.

The main layer is Putaohua Formation, deposited in the transition zone from a large delta front to lake in northern Songliao Basin.

In Chang 6 period, the sedimentary microfacies experienced delta front, delta plain to high curvature river of blending load.

Three subfacies are included in the fan delta: fan delta-plain, fan delta-front and fan pro delta.

Braided delta front subfacies is its sedimentary facies.

Delta plain facies and delta front facies chiefly exist from this area.

and the tidal flat sandbody and fingered sandbody of delta front are also favorable are for exploration.

They are widely developed in delta front, and they usually overlap vertically and occur in belts regionally .

The upper Es^3 is dominated by braided river delta facies, of which the delta front subfacies is the most extensive.

It can be divided into 2 subfacies of fan delta-front and fan pro delta, and 6 microfacies.

Development and application of geological knowledge database for fan-delta front in the dense spacing area

Residual oil distribution and reconciliation for delta front rhythm zone in extra high water cut stage

Sedimentary micro-facies distinguishing marks of delta-front of the west slope zone in southern Son