收稿日期: 2005-07-21
修回日期: 2005-11-23
网络出版日期: 2005-12-20
基金资助
四川省重点学科建设基金项目(编号:SZD0414)资助.
CONTRAST OF LITHOFACIES UNIT IN THE MID AND LATE PERIOD OFOILFIELD DEVELOPMENT— AN EXAMPLE OF KEXIAGROUP OF WU 2 XI IN KARAMAY OILFIELD
Received date: 2005-07-21
Revised date: 2005-11-23
Online published: 2005-12-20
苏维强;张廷山;胡新平;师永民;黄世伟;董同武;姜照勇; . 油田开发中后期精细岩相单元对比――以克拉玛依油田五2西克下组为例[J]. 天然气地球科学, 2005 , 16(6) : 752 -757 . DOI: 10.11764/j.issn.1672-1926.2005.06.752
Lithofacies unit is the single oil sandbody which is more finer than microlayers, which mostly reflects geological characteristic of oil reservoir. Subdivision and contrast are done to meet the demand of tapping remaining oil during middle and later periods of oilfield development. Taking Kexia formation in Wu 2 xi of Karamay oilfield as an example, joint-well sedimentary profile is made according to principle of isochronous contrast and utilizing logging curves and core data, contrast of layers is fulfilled based on contrast of standard well, sedimentary cycle, microfacies and connectivity of sandbody. It is considered that formation S-7 is fan-delta sedimentary, and S+4-7 is main production layer, thick is large and distribution is extensive in the north of the block, connectivity is gradually good, thick becomes thin, area is small, connectivity is poor form north to south and west, the change is great in the horizontal, distribution is scattered. The method is effectivel, and worth popularizing in the refined description of the similar oil reservoir during the development of oilfield.
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