地质力学学报2018，Vol.24Issue(3)：391-398,8.DOI:10.12090/j.issn.1006-6616.2018.24.03.040
哥伦比亚Llanos盆地东部油田Carbonera组C5段河道砂岩地震识别与预测
SEISMIC IDENTIFICATION AND PREDICTION OF C5 CHANNEL SANDSTONE IN THE CARBONERA FORMATION, LLANOS BASIN, COLOMBIA
摘要
Abstract
The channels developed in the Micocene Carbonera formation in the eastern part of the Llanos basin, Columbia, are so favorable reservoir that the accurate descriptions for these channels are key issues in this area.Guided by the simulation of wave equation, the seismic identification mode for channel sand is established.The distribution of the channels is then predicted with RGB mixing frequencies data slices and sensitive attributes.Eventually, the thickness and porosity of sand body are quantitatively described, using constrained sparse impulse inversion and geostatistical inversion.In our study, five favorable lithologic traps of channel sandstone are described in detail.The width of channel is about 322~830 m, and the thickness for channel sand ( with porosity larger than 18%) is 35.05 m, which make this channel sand favorable prospecting areas.The result of the drilling W2 verifies the validity of the technique and the reliability of the reservoir description, which provides a new direction for exploration and development in the next step.关键词
Llanos盆地/河道砂岩/正演模拟/RGB混频/储层反演Key words
the Llanos Basin/channel sandstone/forward modeling/RGB mixing/reservoir inversion分类
天文与地球科学引用本文复制引用
郑连弟,杨江峰,袁联生,杨勤林,冯方,李洋,马永强,胡俊峰..哥伦比亚Llanos盆地东部油田Carbonera组C5段河道砂岩地震识别与预测[J].地质力学学报,2018,24(3):391-398,8.基金项目
中国石化国际勘探公司项目(BJWINJZ-NGEC-2012003,BJWINJZ-NGEC-2013002) （BJWINJZ-NGEC-2012003,BJWINJZ-NGEC-2013002）
