2016, 35(4) 1076-1083 DOI:     ISSN: 1004-5589 CN: 22-1111/P

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Keywords
NM�� logging
T 2 spectrum
capillary pressure curve
igneous rocks
pore structure
eastern depression of Liaohe Oilfield
Authors
WANG Wen-Hua
OU Wei-Ming
LIU Zong-Li
ZHOU Da-Peng
PubMed
Article by Wang, W. H.
Article by Ou, W. M.
Article by Liu, Z. L.
Article by Zhou, D. P.

Pore structure evaluation for igneous rock reservoirs in eastern depression of Liaohe Oilfield

WANG Wen-Hua, OU Wei-Ming, LIU Zong-Li, ZHOU Da-Peng

1. College of Earth Sciences��Jilin University��Changchun 130061��China; 2. College of Geo-exploration Science and Technology��Jilin University��Changchun 130026��China

Abstract��

Through the comparison of NM�� logging data with laboratory pressure mercury data of igneous rock reservoirs��the relationship between transverse relaxation time T 2 and pressure P C of the formation pore fluid is es- tablished by using interpolation method��which is logarithmic relationship�� According to this relationship��the au- thors use T 2 spectrum to construct capillary pressure curves�� Linear method and logarithmic method are used to con- struct capillary pressure curves��and the capillary pressure curve by logarithmic method is closer to the experimental capillary pressure curve�� The application of research results in the study of igneous rocks in eastern depression of Liaohe Oilfield has a good effect in evaluating pore structure of igneous rock reservoirs�� The study found that a cap- illary stress curve with small sorting coefficient��large pore throat slanting degrees��high value maximum into mercu- ry saturation and big average pore throat radius has better corresponding pore structure��

Keywords�� NM�� logging   T 2 spectrum   capillary pressure curve   igneous rocks   pore structure   eastern depression of Liaohe Oilfield  
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