Reservoir Heterogeneity at Seventy-Six West Field, Texas: An Opportunity for Increased Oil Recovery From Barrier/Strandplain Reservoirs of the Jackson-Yegua Trend by Geologically Targeted Infill Drilling

1991 ◽  
Author(s):  
D.S. Hamilton
Keyword(s):  
Oil Recovery ◽  
Reservoir Heterogeneity ◽  
Infill Drilling ◽  
Increased Oil Recovery

FLUVIAL RESERVOIR ARCHITECTURE INTERPRETATION BELOW THE SEISMIC RESOLUTION IN AN OFFSHORE OILFIELD

2021 ◽  
pp. 1-49
Author(s):  
Dong Zhang ◽  
Xuri Huang ◽  
Ting’en Fan ◽  
Haifeng Wang ◽  
Feng Ding ◽  
...  
Keyword(s):  
Time Window ◽  
Seismic Attributes ◽  
Gradient Algorithm ◽  
Bohai Bay ◽  
Reservoir Heterogeneity ◽  
Reservoir Architecture ◽  
Fluvial Reservoir ◽  
Seismic Resolution ◽  
Infill Drilling ◽  
Bounding Surfaces

Reservoir discontinuity is a practical representation of reservoir heterogeneity, which leads to the non-uniformed flow of hydrocarbons during production and to the increase in the difficulties of producing the remaining oil in clastic reservoirs. A feasible solution is to detect the internal bounding surfaces of the reservoir based on infill drilling data. However, for offshore oilfields, reservoir discontinuity analysis will have to rely on seismic data due to their sparse well spacings. Moreover, from the interpretation of a fluvial reservoir system in Chinaapos;s Bohai Bay, it turns out that the thickness of the sandstone is usually smaller than the seismic tuning thickness. In order to interpret a fluvial reservoir architecture which is below the seismic resolution, we elaborated a hierarchy of the fluvial reservoir architectures and classified the compound sandstones as different architectural elements according to their sedimentary periods. Forward models were designed to analyze the seismic responses of the architectures. The results demonstrate that amplitude-related seismic attributes could be sensitive to different reservoir architectures below the seismic resolution. The amplitude-related seismic attributes can be extracted through a time window guided by the horizons. The horizon-based attributes can be treated as digital images which may contain the information of compound sandstones with hidden discontinuity boundaries. We propose a direction-adaptive mathematical morphology gradient algorithm that can detect the boundaries of reservoir architectures in different directions on horizon-based seismic attributes. The application to field data demonstrates that the boundaries detected by the proposed algorithm have a good consistency with well logs. This method could enhance our capability to visualize and understand the complexity of reservoir heterogeneity.

scholarly journals SURFACTANT-POLYMER FLOODING PERFORMANCE IN HETEROGENEOUS TWO-LAYERED POROUS MEDIA

2011 ◽  
Vol 12 (1) ◽  
pp. 31-38 ◽  
Author(s):  
Muhammad Taufiq Fathaddin ◽  
Asri Nugrahanti ◽  
Putri Nurizatulshira Buang ◽  
Khaled Abdalla Elraies
Keyword(s):  
Porous Media ◽  
Oil Recovery ◽  
Polymer Flooding ◽  
Water Flooding ◽  
Residual Oil ◽  
Oil Saturation ◽  
Reservoir Heterogeneity ◽  
Residual Oil Saturation ◽  
Layered Porous Media ◽  
Multiple Porosity

In this paper, simulation study was conducted to investigate the effect of spatial heterogeneity of multiple porosity fields on oil recovery, residual oil and microemulsion saturation. The generated porosity fields were applied into UTCHEM for simulating surfactant-polymer flooding in heterogeneous two-layered porous media. From the analysis, surfactant-polymer flooding was more sensitive than water flooding to the spatial distribution of multiple porosity fields. Residual oil saturation in upper and lower layers after water and polymer flooding was about the same with the reservoir heterogeneity. On the other hand, residual oil saturation in the two layers after surfactant-polymer flooding became more unequal as surfactant concentration increased. Surfactant-polymer flooding had higher oil recovery than water and polymer flooding within the range studied. The variation of oil recovery due to the reservoir heterogeneity was under 9.2%.

Increased Oil Recovery by Permeability Modification in High Perm Contrast Slim Tubes

2014 ◽  
Author(s):  
Scott Jackson ◽  
John Fisher ◽  
Robert Fallon ◽  
Joseph Norvell ◽  
Edwin Hendrickson ◽  
...  
Keyword(s):  
Oil Recovery ◽  
Permeability Modification ◽  
Increased Oil Recovery
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