春风油田排66块火成岩储层成因模式分析

doi:10.11885/j.issn.1674-5086.2016.06.28.01

摘要/Abstract

摘要： 排66块石炭系火成岩岩性复杂、储集空间类型多样，有利储层发育规律和分布模式认识不清。为实现油藏有效动用，有必要开展储层成因模式的分析，指导油藏开发。基于岩芯、成像和分析化验资料，利用地质统计学方法确定本区的主要岩石类型为安山岩和凝灰岩，主要的储集空间包括溶蚀孔洞、裂缝，原生孔隙发育程度弱，无法独自形成有效储层。通过对3种储层类型分布规律的研究，建立了本区火成岩储层的成因模式：岩性控制了储层的范围、构造运动是裂缝形成的直接原因、成岩作用塑造现今储层的发育规律，缝洞储层一般沿断层带分布，在纵向上受控于有利成岩相带。

关键词: 断层, 石炭系, 溶蚀孔洞, 裂隙式喷发, 基质

Abstract: The Pai 66 Carboniferous igneous rocks have a complex lithology and various reservoir space types. There is still uncertainty about favorable reservoir-development characteristics and distribution patterns. However, for effective development of oil reservoirs, it is necessary to analyze the genetic model of the reservoir for guidance on the exploitation of the oil reserves. We used a geostatistical method for analyses, based on the data of the rock cores, imaging, and analysis assays. The results indicate that andesite and tuff are the main rock types in the area. The main reservoir spaces include dissolution holes and cracks. The primary pores alone are unable to form an effective reservoir owing to weak development. After studying the distribution characteristics of three types of reservoirs, an igneous reservoir genetic model was established for this area. This is because the lithology controls the scope of the reservoir, tectonic movement is the immediate cause of crack formation, and diagenesis shapes the development of the present reservoir. A fracture-cavern reservoir is generally distributed along the fault zone, controlled by a favorable diagenetic facies running lengthwise.

Key words: fault, Carboniferous, dissolved pores, fissure eruption, matrix

中图分类号:

TE122.2

王伟. 春风油田排66块火成岩储层成因模式分析[J]. 西南石油大学学报(自然科学版), 2017, 39(6): 25-33.

WANG Wei. Reservoir Genetic Model Analysis of Pai 66 Carboniferous Igneous Rocks in Chunfeng Oilfield[J]. 西南石油大学学报(自然科学版), 2017, 39(6): 25-33.

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