An Analysis of Reservoir Characteristics and Controlling Factors#br#
of Jurassic Da′anzhai Section in Langzhong Nanbu Area

doi:10.11885/j.issn.1674-5086.2015.10.10.03

Abstract

Abstract:

We carried out researches on reservoir characteristics and controlling factors of reservoir development of Jurassic
artesian group Da′anzhai section according to theories and technical methods of sedimentary rock，reservoir geology，logging
geology，and by using data of drilling，logging，cores，well logs and indoor test analysis，etc. The results showed thatrock structure
components in the reservoir of Da′anzhai section are shell-based residual shell limestone，rose quartz -coarse-grained shell
limestone，bright crystal medium debris and muddy shell limestone；with calcite as the main mineral ingredients；the sedimentary
environment is mainly debris beach microfacies；the main reservoir space for dissolution infiltration holes，intergranular
holes and cracks with micro pores and micro throat；pore structure is mainly micro pore with micro throat and fine throat；
reservoir porosity concentrated between 0.5% to 2.0% and permeability are more concentrated between 0.001 to 1.000 mD.
The analysisled to the conclusion that sedimentary microfacies control the reservoir distribution；debris beach reservoir is the
most favorable facies；sedimentary palaeogeomorphology highland controlled the quality reservoir development；dissolution
and tectonic disruption played a constructive role in dissolution holes and cracks；compaction pressure solution and calcite
cementation had devastating effects on reservoir properties.

Key words: reservoir characteristics；controlling factors；Da&prime, anzhai member；Langzhong Nanbu area

CLC Number:

TE122

ZHANG Qi1，2*, PENG Jun1. An Analysis of Reservoir Characteristics and Controlling Factors#br# of Jurassic Da′anzhai Section in Langzhong Nanbu Area[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2015.10.10.03.

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An Analysis of Reservoir Characteristics and Controlling Factors#br# of Jurassic Da′anzhai Section in Langzhong Nanbu Area

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