中国地质2011，Vol.38Issue(3)：586-593,8.
川北阆中-南部地区长兴组储层特征
Characteristics of reservoirs of Changxing Formation in Langzhong-Nanbu area, northern Sichuan Basin
摘要
Abstract
Located in the ramp region between the Central Sichuan uplift and Northern Sichuan depression, the Langzhong-Nanbu area possesses superior accumulation conditions. The reservoir characteristics of the Changxing Formation in the study area were studied by means of core observation, debris description, microscopic observation of cast thin sections, analysis of mercury intrusion and geophysical interpretation. The results show that favorable facies belts for the development of reservoirs are interbank area and bank in the platform as well as platform marginal reef flat. The rocks are dominated by bioherm limestone limestone, calcarenite and micritic limestone. In various kinds of reservoir space such as pores, holes and seams,the pores are mainly intergranular pores and dorsal foramen. In massive micro-throats and little fine throats, most of the throats are confined. As the average porosity is 1.16％ and the average permeability is 0.5415×10-3μm2, the reservoirs are classified as extra low-porosity and extra low-permeability reservoirs. Seismic response displays the features of low frequency, weak amplitude and chaotic seismic reflection. The well-logs for the gas reservoirs exhibit the properties of high neutron porosity, low density and low resistance.关键词
储层特征/长兴组/四川盆地/阆中-南部Key words
reservoir characteristics/ Changxing Formation/ Sichuan Basin /Langzhong-Nanbu分类
天文与地球科学引用本文复制引用
李勇,鲍志东,张贵生,余波,刘远洋,陈俊..川北阆中-南部地区长兴组储层特征[J].中国地质,2011,38(3):586-593,8.基金项目
中国石化海相前瞻性基金资助项目(G0800-06-ZS-349)及中石化西南油气分公司项目"阆中-南部区块海相气藏新增天然气预测储量研究"(KT10-01)联合资助. （G0800-06-ZS-349）
