新疆北部地区石炭系碎屑岩主要为中粒级长石砂岩、岩屑长石砂岩、岩屑砂岩 ,凝灰质、泥质含量高 ,结构成熟度低 ,处于晚成岩A期 晚成岩B、C期 ,局部达近变质阶段 ,早期方解石胶结发育 ,原生孔隙保存条件差 ,但长石、岩屑、早期方解石胶结物的化学稳定性较差 ,古风化壳附近有望找到较好储集层 ,在火山岩中可形成裂缝 溶洞型储集层。安西红柳园地区碎屑岩火山岩屑含量较高 ( 8%～ 17% ) ,热成熟度高 ,埋藏溶蚀作用不发育 ,寄希望于欠压实型储集层和古风化壳型储集层。祁连地区主要为 (纯 )石英砂岩、次长石岩屑砂岩、岩屑砂岩 ,储集空间为粒间 (溶 )孔、粒内溶孔、高岭石晶间微孔及少量裂缝 ,总体为特低孔、渗储集层 ,部分可达低孔、低渗或中孔、低渗储集层 ,在最大古埋深较浅、欠压实带以及古风化壳附近的较富含长石和岩屑的砂岩中 ,有望找到较好的储集层。上石炭统较好储集层主要分布于新疆准噶尔东北部的五彩湾、奇台双井子 ,准噶尔西部的车排子、百口泉及祁连地区的中卫下河沿、景泰红水堡等地。下石炭统较好储集层分布于新疆的双井子和祁连地区的景泰红水堡等地。图 1参 3(朱如凯摘 ) Carboniferous clastic rocks in northern Xinjiang are mainly medium-grained feldspar sandstone, feldspar feldspathic sandstone, lithic sandstone, tuffaceous, high clay content, low structural maturity, late-diagenetic stage A diagenetic diagenetic B, C Early stage of metamorphism, early calcite cementation, poor preservation of primary pores, but poor chemical stability of feldspar, cuttings, early calcite cements, good weathering crust near the reservoir is expected to find in the Crater cave reservoirs can be formed in volcanic rocks. The content of clastic volcanic debris in Hongliuyuan area, Anxi, is relatively high (8% -17%), with high thermal maturity and little burial dissolution. It is expected to be undercompacted reservoirs and ancient weathering crust reservoirs. The Qilian area is mainly composed of (pure) quartz sandstone, subfacial lithic sandstone and lithic sandstone. The reservoir space is intergranular (dissolved) pores, intragranular dissolved pores, kaolinite intergranular pores and a few cracks, and the total It is characterized by ultra-low porosity and permeability reservoir, partly up to low-porosity, low-permeability or medium-porosity and low permeability reservoirs. In the areas of shallow depth of maximum ancient burial depth, undercompacted belt and ancient weathered crust, Stone and rock cut sandstone, is expected to find a better reservoir. The upper Carboniferous reservoirs are mainly distributed in Wucaiwan, Qitai Shuangjingzi, northeastern Junggar in Xinjiang, Chepaizi in the west of Junggar, Baihequan and Zhongwei Xiaheyan and Jingtai Hongshui Fort in the Qilian area. The Lower Carboniferous reservoirs are located in Shuangjingzi in Xinjiang and Jingtai Hongshui Fort in the Qilian area. Figure 1 reference 3 (Zhu Rukai pick)