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准噶尔盆地西北缘的克拉玛依油田七中—东区克下组储层孔隙特征复杂,孔喉分布差异较大,在经过水驱后具有很强的微观非均质性。使得油藏在后期注水开发,通过对沉积作用中的对储层非均质性控制因素以及成岩作用和溶蚀作用对储层孔隙改造作用造用微观非均质性,后期构造运动产生微裂缝使得非均质性加强。通过对储层沉积、成岩和构造特征的具体分析,从而研究影响微观非均质性的影响因素。对储层的非均质影响因素的研究对今后开发的效果及开采效益有重要的影响,对随后油藏评价和油田开发调整有重要的参考价值。
The Kezhamal reservoir in the eastern Karamay oilfield in the northwestern margin of Junggar Basin is characterized by complex pore features, large pore-throat distribution, and strong microscopic heterogeneity after waterflooding. Which makes the reservoir develop in the late stage of waterflooding. Through the control of reservoir heterogeneity and the diagenesis and dissolution in sedimentation, it makes micro-heterogeneity in reservoir pore reformation, and produces micro-cracks in later tectonic movement. Heterogeneity is strengthened. Based on the analysis of reservoir sedimentation, diagenesis and tectonic features, the influencing factors of micro-heterogeneity are studied. The research on heterogeneity of reservoir has an important influence on the future development and exploitation benefits, and has important reference value for subsequent reservoir evaluation and oilfield development and adjustment.