กกA Real-world Case:

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Advanced Reservoir Prediction & Analysis
By Seismic-Well Information Fusion

|Tech|Software|Seismic Processing|Reservoir Analysis|Case|Well-Logs|Geo Fusion|

This is a real-world case where Seiscriptor™ is applied to field data samples.  The service area is about 40 square kilometers offshore in Shengli Oil Field.  Before applying Seiscriptor™ to process field data, three wells (named TH-A2, TH-A5 and TH-A6) in this area had already been drilled, and they are called pre-drilled wells.  Two of these pre-drilled wells (TH-A2 and TH-A5) are highly productive (yield between 100 and 200 tons/day with more than 30 meters of accumulated oil strata in a 180-meter depth), while the third well (TH-A6) has very thin oil strata. 

Since the number of available pre-drilled wells was limited to 3, these pre-drilled wells could not provide enough information for controlling the overall reservoir area, nor for training models in supervised solutions..

By applying SOMA and integrating human expertise, the basic distribution of the reservoir was determined. According to this prediction, further parameter analyses were applied, and two new wells (TH-A51 and TH-A52) were suggested for drilling (see picture below). Actual drilling of these two proposed well proved that they were highly productive, and the predicted parameters (such as estimated porosity) are very close to the actual ones.

All pictures on this page -- double click to view a full version.

Depth Map & Oil Distribution Map

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T0 depth map of the target layer.

Predicted reservoir oil distribution map: red
for oil-rich, yellow medium, and blue oil-poor.

(Double click them to enlarge)

Predicted Average Porosity Map 

Predicted average porosity map (right):
Red area     - high porosity (above 30%),
Yellow area - medium porosity (around 15%)
Blue area    - low porosity (below 8%)

To see a larger view of the picture, double click on it.

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Prediction of Sand Thickness of a Target Stratum
-- Actual and Predicted Thickness Values Compared: 

Well#

Depth(m)

Sand Thickness (actual)

Sand Thickness (predicted)

TH-A2*

1233-1410

35.7 m

known (pre-drilled)

TH-A5*

1242-1420

51.9 m

known (pre-drilled)

TH-A6*

1239-1416

21.8 m

known (drilled)

TH-A51

1264-1441

42.1 m

42.4 m (before drilling)

TH-A52

1261-1440

45.6 m

43.8 m (before drilling)

* indicates a pre-drilled well. Wells TH-A51 and TH-A52 were drilled after prediction by SeiScriptor.

3D View of a Target Layer with
Predicted Reservoir Oil Distribution


(Double click it for a full view)

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