1887

Abstract

Summary

Research results show the following: first, Structures of rock fragment belt, en echelon fold, fracture corridor and pinnate cleavage are likely present near faulting belt, and there was a conspicuous negative exponential correlation between fracture frequency and distance to main fault set. Second, this paper modified the weathering crust model of fractured volcanic rock, further subdividing it into 4 sections of soil layer, water-resolved, fracture and bedrock downward, which could be used to better explain the vertical distribution pattern of subsurface fractures in volcanic rocks. Third, the volcanic explosion breccia is the most preferable lithology for fracture, followed by overflow lavas, and the least one is tuff. Fracture favors acidic volcanics more than neutral and basic volcanics. Simulation runs revealed that, the producer connected directly by fracture with injector was flooded soon after injection, while the producer connected by fracture and matrix combination with injector presented a displacement feature resembling matrix flow. It is therefore inferred that, although with fracture present, the impact of matrix permeability of fractured volcanic reservoirs on water-flooding development cannot be ignored.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201800037
2018-02-05
2024-03-28
Loading full text...

Full text loading...

References

  1. NelsonR A.
    Geological analysis of naturally fractured reservoirs[M]. Houston: Gulf Publishing Company, 1985.
    [Google Scholar]
  2. HOULianhua, LUOXia, WANGJinghong, et al.
    Weathered volcanic crust and its petroleum geologic significance: A case study of the Carboniferous volcanic crust in northern Xinjiang[J]. Petroleum exploration and development, 2013, 40(3):257–274.
    [Google Scholar]
  3. WANGYang, JIGuangyi, SUNShanping, et al.
    Origin of the volcanic rocks in the Donglingtai Formation from Yanhecheng area, Western Hills of Beijing and its geological implications[J]. Geological Review, 2009, 55(2):191–214.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201800037
Loading
/content/papers/10.3997/2214-4609.201800037
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error