1887

Abstract

Summary

Fracture corridors are zones of high density of persistent fractures within a rock bearing scarcer diffuse fractures. They occur at all scales from cm to km. The underground hydraulic properties of fracture corridors are well characterized but their structural architecture is poorly constrained because of their sub-seismic resolution. Particularly, their distribution laws and geomechanic conditions of growth remain poorly known. The aim of this study is to decipher the tectonic condition and the geometry for fracture corridors affecting the Devonian sandstones of Huamapampa formation (Icla syncline, Bolivia). This formation is the stratigraphic and structural analogue for many gas field located in the area of the Icla Syncline.

We proceeded a structural analysis in the field at metric scale, an analysis of Digital Outcrop Models from photogrammetry at pluri-metric scale, and 3D structural models with Gocad at the Syncline scale. We show that fracture corridors of the Icla Syncline are early and transverse, and they formed at the early onset of the folding. They formed as anastomosing sets as a function of the stratigraphic distribution of the layered sandstones. Fracture corridors are observed at all scales with a vertical persistence depending on the mechanical stratigraphy.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201800022
2018-02-05
2020-07-08
Loading full text...

Full text loading...

References

  1. BaiT., PollardD.D. and GaoH.
    (2000) Explanation for fracture spacing in layered materials. Nature, v. 403, 753–756.
    [Google Scholar]
  2. EngelderT.
    (1987) Joints and shear fractures in rocks: in Atkinson, B.K., editor, Fracture Mechanics of Rock, London, Academic Press, 27 – 69.
    [Google Scholar]
  3. LaubachS.E., LamarcheJ., GauthierB.D.M., DunneW.M., SandersonD.J.
    (2017) Spatial arrangement of faults and opening-mode fractures. Journal of Structural Geology. In press.
    [Google Scholar]
  4. PollardD. D., and SegallP.
    (1987) Theoretical displacements and stresses near fractures in rocks: with applications to faults, joints, veins, dikes ans solution surfaces. inB. K.Atkinson, ed., Fracture Mechanics of Rock: London, Academic Press, 277–349.
    [Google Scholar]
  5. Questiaux, J. M., CouplesG. D. and RubyN.
    (2009) Fractured reservoirs with fracture corridors., Geophysical Prospecting, v. 58, 279–295.
    [Google Scholar]
  6. RivesT., RazackM., PetitJ.-P. and RawnsleyK.D.
    (1992) Joint spacing: analogue and numerical simulations, Journal of Structural Geology, v. 14(8–9), 925–937.
    [Google Scholar]
  7. Rogers, C. M., and T.Engelder
    (2004) The feedback between joint-zone development and downward erosion of regularly spaced canyons in the Navajo Sandstone, Zion National Park, Utah, The initiation, propagation, and arrest of joints and other fractures: Geological Society, London, Special Publications, v. 231, 49–71.
    [Google Scholar]
  8. SinghS.K., Abu-HabbielH., KhanB., AkbarM., EtchecoparA. and MontaronB.
    (2008) Mapping fracture corridors in naturally fractured reservoirs: an example from Middle East carbonates. first break, v. 26, 59–63.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201800022
Loading
/content/papers/10.3997/2214-4609.201800022
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