高校地质学报2011，Vol.17Issue(4)：577-585,9.
塔里木板块塔中83井-16井区上奥陶统礁滩复合体储层结构
Reservior Structures of the Upper Ordovician Reef Complexes in Tazhong 83-16 Well Area, Tarim Block
摘要
Abstract
Carbonate sequences of the upper Ordovician Lianglitag Formation along the Tazhong 83-Tazhong 16 well blocks, Slope Break I.Tarim Block is 170-300 m thick and notable as reservoirs of oil-gas. This suite of sedimentary facies from the platform margin is generally shown as overlapping of reef complexes with 4-5 cycles. Lithological facies as well as enhanced karst and tectonic action onward are considerable factors controlling the trap formation. Based on the analysis of drilling cores, thin sections and logging parameters, types of reservoir space are recognized as cave, intragranularly dissolved pores, intercrystalline dissolved pores, moldic pore, biologic dorsal pore, organic framework pore and micro-fracture. The features of the void structures as well as their associations are catalogued as vug,fracture-vug, and fracture configuration types, respectively,and are in similar abundance. Nevertheless, the perspective of reservoirs with good conditions of porosity and permeability are favorable for spatial distribution from the platform margin of the Slope-break I. Such a model is subtly consistent with reef-bank complexes. Outer setting of the platform margin has ideal lithologiolal fades that experienced multiple reformation phases and show weak filling￡?The reservoir pattern shows that fracture?arug and rug types are dominant￡?Therefore￡?￡?we consider it a potential area for highquality type I and II reservoirs￡?However,inner setting of the platform margin along the Tazhong 12-Tazhong 16 well blocks isdominated by fractures and high iithological filling during later periods that resulted in type II and In reservoir.关键词
储层结构/礁滩复合体/良里塔格组/上奥陶统/塔中Ⅰ号坡折带/塔里木板块Key words
Reservoirs-Reef complexes-Lianglitag Formation-Upper Ordovician-Slope-break I in Tazhong-Tarim Block,NW China分类
天文与地球科学引用本文复制引用
王振宇,张云峰,杨红强,苏东坡,张丽娟,邓小杰,李越..塔里木板块塔中83井-16井区上奥陶统礁滩复合体储层结构[J].高校地质学报,2011,17(4):577-585,9.基金项目
中科院创新工程方向性项目(KZCX2-YW-Q05-01)资助 （KZCX2-YW-Q05-01）
