TY - JOUR
T1 - Porosity estimation method by X-ray computed tomography
AU - Taud, H.
AU - Martinez-Angeles, R.
AU - Parrot, J. F.
AU - Hernandez-Escobedo, L.
PY - 2005/6/30
Y1 - 2005/6/30
N2 - In X-ray computed tomography imaging, the approaches used to determine the porosity of the rock from a single computed tomography scan are based on image segmentation techniques. When these techniques are applied to the same data, different results emerge and a threshold is needed at some level of the process. Consequently, the implication is that there is an uncertainty in the porosity measurement. Because of these sensibilities, a new method, called here the grey level method, is developed avoiding the use of these techniques. Considering the computed tomography image as a surface, the volumes required in porosity estimation are obtained by means of integrating this surface with simple operations applied to the image histogram. A porosity distribution which can reflect the properties of the studied rocks is developed given the value of the estimated porosity. The method is compared to two segmentation methods and is evaluated by a conventional one. A close agreement with the conventional method is found.
AB - In X-ray computed tomography imaging, the approaches used to determine the porosity of the rock from a single computed tomography scan are based on image segmentation techniques. When these techniques are applied to the same data, different results emerge and a threshold is needed at some level of the process. Consequently, the implication is that there is an uncertainty in the porosity measurement. Because of these sensibilities, a new method, called here the grey level method, is developed avoiding the use of these techniques. Considering the computed tomography image as a surface, the volumes required in porosity estimation are obtained by means of integrating this surface with simple operations applied to the image histogram. A porosity distribution which can reflect the properties of the studied rocks is developed given the value of the estimated porosity. The method is compared to two segmentation methods and is evaluated by a conventional one. A close agreement with the conventional method is found.
KW - Image analysis
KW - Porosity
KW - Rock
KW - X-ray tomography
UR - http://www.scopus.com/inward/record.url?scp=20444462420&partnerID=8YFLogxK
U2 - 10.1016/j.petrol.2005.03.009
DO - 10.1016/j.petrol.2005.03.009
M3 - Artículo
AN - SCOPUS:20444462420
SN - 0920-4105
VL - 47
SP - 209
EP - 217
JO - Journal of Petroleum Science and Engineering
JF - Journal of Petroleum Science and Engineering
IS - 3-4
ER -