Fractured Core Analysis&lt;subtitle&gt;Interpretation, Logging, and Use of Natural and Induced Fractures in Core&lt;/subtitle&gt;

Kulander, Byron R.; Dean, Stuart L.; Ward, B. J.

doi:10.1306/mth8516

Cited by 66 publications

(5 citation statements)

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“…Due to the propensity of mudrocks to fragment during the coring process, surface weathering, and difficulties associated with distinguishing natural and drilling-induced fractures (Kulander et al, 1990), obtaining naturally fractured mudrock samples representative of subsurface conditions is challenging. These difficulties are reflected in the sparsity of naturally fractured mudrock data.…”

Section: Observations Of Fracture Surface Roughnessmentioning

confidence: 99%

Controls on the intrinsic flow properties of mudrock fractures: A review of their importance in subsurface storage

Phillips

Kampman

Bisdom

et al. 2020

Earth-Science Reviews

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Section: Observations Of Fracture Surface Roughnessmentioning

confidence: 99%

Controls on the intrinsic flow properties of mudrock fractures: A review of their importance in subsurface storage

Phillips

Kampman

Bisdom

et al. 2020

Earth-Science Reviews

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“…This core recovered a set of fractures in the clinothem package, and they are described here. These fractures are natural and clearly not drilling induced (Kulander et al, 1990). Our interpretation of the fractures benefits greatly from existing studies.…”

Section: Introductionmentioning

confidence: 75%

Early Load‐Induced Fracturing in a Prograding Carbonate Margin

McNeill

Eberli

2009

Perspectives in Carbonate Geology

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The description of early non-tectonic fracturing of carbonates is rare because (1) fractures in young carbonates occur in areas not easily accessible, and (2) burial and diagenesis often precludes the determination of the exact timing of (early) fracturing in older rocks. The Bahamas Drilling Project core Clino recovered the upper part of a young prograding platform margin containing a set of fractures interpreted to be non-tectonic; formed by rapid loading of a clinothem package. Three intervals with open and partially infilled fractures were recovered in Clino, and those fractures are closely related to the lithologic variation in the slope sediments.Fracturing occurred specifically within coarse, well-cemented skeletal deposits. These coarser deposits are generally margin-derived sediments within the background sediment. The overlying and underlying finer-grained sediments are significantly less fractured. The fractures occur within a 45 m thick interval immediately below a surface of non-deposition or erosion with a hiatus of >0.5 my. Our model suggests that early cementation of the skeletal sands, followed by rapid margin progradation, provided significant load to generate brittle fracturing (shear and extensional) in lithified strata. Laboratory deformation experiments, magnetic fracture-plane orientation and the timing of load emplacement are consistent with load-induced fracturing.Fracture planes preferentially dip westward which is parallel to the depositional slope. Similar early fracture porosity can act as high permeability conduits for diagenetic fluids and hydrocarbons in platform margin and slope strata.

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“…10). The strike-slip stress state of cracks in different motion types of the Altun footings is dominant, as can be seen from the general occurrence of reverse-fracture fractures associated with sutures (Kulander et al, 1990;Ameen and Hailwood, 2008;Xu et al, 2022).…”

Section: Crack Characteristics Of Bedrock In the Upper Weathered Crustmentioning

confidence: 96%

“…Cracks are the most common type of natural gas reservoir space in bedrock. Cracks develop in both the semi-weathered zone and the leaching zone, which are often associated with tectonic activity (Jackson, 1980;Kulander et al, 1990;Ameen, 1991).…”

Section: Matrix Cracks Reservoir Spacementioning

confidence: 99%

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Salt‐Lake Basin Bedrock Weathered Crust Gas Reservoir in the Altun Mountains Front of the Qaidam Basin, Western China

Zhang

Jia

Wáng

et al. 2023

Acta Geologica Sinica (Eng)

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The bedrock weathered crust in front of the Altun Mountains in the Qaidam Basin is different from other bedrock weathered crust, because the Qaidam Basin is a salt lake basin, the saline water fluid is infiltrated and deposited in the overlying strata, and a large amount of gypsum is filled in bedrock weathered crust, the pore structure is changed. Use core observation, polarized light microscopy, Electron probe, physical property analysis and field emission scanning electron microscopy experiments. Cracks and a small number of dissolved pores in the interior of the weathered crust, the matrix micropores are widely developed. The characteristics of matrix micropores and cracks have been studied, especially the various matrix cracks formed by tectonic and weathered, as well as the stress characteristics of small dissolved pores, physical properties such as porosity and permeability, This “dual structure” developed in the bedrock is important for guiding the exploration of the lake basin bedrock natural gas.

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Fractured Core Analysis<subtitle>Interpretation, Logging, and Use of Natural and Induced Fractures in Core</subtitle>

Cited by 66 publications

References 0 publications

Controls on the intrinsic flow properties of mudrock fractures: A review of their importance in subsurface storage

Controls on the intrinsic flow properties of mudrock fractures: A review of their importance in subsurface storage

Early Load‐Induced Fracturing in a Prograding Carbonate Margin

Salt‐Lake Basin Bedrock Weathered Crust Gas Reservoir in the Altun Mountains Front of the Qaidam Basin, Western China

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