| 肖玲,田景春,魏钦廉,张春生.桥口地区沙三组3-4亚段次生孔隙研究[J].地质找矿论丛,2007,(4):299-302 |
| 桥口地区沙三组3-4亚段次生孔隙研究 |
| STUDY ON THE SECONDARY PORES IN Es33-4 RESERVOIR IN QIAOKOU AREA |
| 投稿时间：2007-01-19 修订日期：2007-04-18 |
| DOI：10.6053/j.issn.1001-1412.2007.4. 011 |
| 中文关键词: 桥口地区 热循环对流 次生孔隙 测井 |
| 英文关键词:Qiaokou secondary pore heat recycle control-flow well logging |
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| 中文摘要: |
| 桥口地区沙三组3-4亚段储层为低孔低渗致密层,次生孔隙类型为粒间溶孔、伸长状孔隙、充填后剩余的粒间孔隙、粒内溶孔、晶内溶蚀孔隙;其中溶蚀粒间孔隙和溶蚀粒内孔隙是最主要的次生孔隙类型;次生孔隙的孔径一般为2~25μm。纵向上,沙三组3-4亚段发育3个次生孔隙发育带;平面上,次生孔隙在中央隆起带的翼部、靠近东部物源区的水下扇的扇中-扇根和轴向重力流水道较为发育;次生孔隙发育的形成机理是干酪根脱羧及粘土矿物脱水形成的酸性孔隙水溶解长石等铝硅酸盐矿物和异常高压保存下来的次生孔隙经热循环对流局部改造形成。 |
| 英文摘要: |
| The Es33-4 reservoir is the low porosity and low permeability tight reservoir in Qiaokou Area.The types of secondary pore include intergranular dissolved,extended shape,intergranuler,intragranular dissolved and intercrystal dissolution pores.The pore size of the secondary pores is 2-25μm.The intergranular dissolved pores and intragranular dissolved pores are the most important types in all the secondary pores.The Es33-4 reservoir has three secondary pore zone in vertical.In the plane,the secondary pores develop in the alar part of center mole track,the root fan-middle fan of sub-marine fan near the east provenance and the axial gravity flow channel.The secondary pore are generated as a result of aluminosilicate dissolution caused by acid water from decarboxylation of kerogen and dehydration of clay minerals and the part rebuild of heat recycle control-flow through overpressure. |
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