火山岩储层储集空间及影响因素研究

The reservoir spaces and influencing factors of the volcanic reservoirs

关键词:  火山岩储层  储集空间  成岩作用  风化淋滤作用  构造作用

Key words:  volcanic reservoirs  reservoir space  diagenesis  weathering and leaching  tectonism

摘要:

火山岩储层已成为油气勘探的一个新领域。由于火山岩储层的复杂性和特殊性,对其的研究还比较薄弱。在总结国内外火山岩储层研究成果的基础上,通过对准噶尔盆地与松辽等盆地的火山岩储层的分析,本文认为火山岩储层的储集空间主要有孔洞和裂缝,而裂缝连通了孤立的孔洞。当孔、洞、缝相互交织在一起时,才可形成有效的火山岩储集空间。在火山岩储层储集空间的演化过程中,由于受自身因素和外部条件的影响,火山岩储层的内部结构比较复杂。岩性岩相、成岩作用、风化淋滤作用、构造作用等在对火山岩储集空间的改造中起着关键作用。

Abstract:

The volcanic reservoirs as a new field of petroleum exploration have long been little known because their complexity and specific characteristics. The purpose of this paper is to provide new insights into the reservoir spaces and influencing factors of the volcanic reservoirs. The reservoir spaces of the volcanic reservoirs encompass pore spaces and fissures, and the fissures, in turn, may connect various isolated pore spaces. As a result, the mosaics of pore spaces and fissures or cracks may cause effective reservoir spaces of volcanic reservoirs. The influencing factors of the volcanic reservoirs including lithology, lithofacies, diagenesis, weathering, leaching and tectonism may play an important role in the modification of the reservoir spaces of the volcanic reservoirs in the study area.