姬塬油田红井子地区延长组长9油层组石油富集规律

doi:10.11743/ogg20120513

石油与天然气地质 ›› 2012, Vol. 33 ›› Issue (5): 758-765.doi: 10.11743/ogg20120513

姬塬油田红井子地区延长组长9油层组石油富集规律

陈朝兵^1,2, 朱玉双¹, 谢辉³, 张杰⁴, 王海华⁵, 程刚⁶, 徐森²

1. 西北大学大陆动力学国家重点实验室, 陕西西安 710069;
2. 中国石油长庆油田分公司第二采气厂, 陕西西安 710200;
3. 中国石油新疆油田分公司陆梁油田作业区, 新疆克拉玛依 834000;
4. 中国石油长庆油田分公司第一采油厂, 陕西西安 710018;
5. 中国石油长庆油田分公司第六采油厂, 陕西西安 710018;
6. 中国石油长庆油田分公司长庆油田档案馆, 陕西西安 710018

收稿日期:2011-10-30 修回日期:2012-07-01 出版日期:2012-10-28 发布日期:2012-11-15
作者简介:陈朝兵(1984-),男,博士,石油地质与储层评价。
基金资助:
国家重点基础研究发展计划("973"计划)项目(2003CB214603)。

Accumulation patterns of the Chang-9 oil reservoir in the Yanchang Formation of Hongjingzi area in Jiyuan oilfield

Chen Zhaobing^1,2, Zhu Yushuang¹, Xie Hui³, Zhang Jie⁴, Wang Haihua⁵, Cheng Gang⁶, Xu Sen²

1. State Key Laboratory of Continental Dynamics, Northwest University, Xi’an, Shaanxi 710069, China;
2. No.2 Gas Production Plant, PetroChina Changqing Oilfield Company, Xi’an, Shaanxi 710200, China;
3. Luliang Oilfiled, PetroChina Xinjiang Oilfield Company, Karamay, Xinjiang 834000, China;
4. No.1 Oil Production Plant, PetroChina Changqing Oilfield Company, Xi’an, Shaanxi 710018, China;
5. No.6 Oil Production Plant, PetroChina Changqing Oilfield Company, Xi’an, Shaanxi 710018, China;
6. Archives of PetroChina Changqing Oilfield Company, Xi’an, Shaanxi 710018, China

Received:2011-10-30 Revised:2012-07-01 Online:2012-10-28 Published:2012-11-15

摘要/Abstract

摘要：

通过测井分析、岩心观察、"四性关系"(岩性、物性、电性、含油性)研究以及试油、试采数据分析,结合构造特征解析,总结了鄂尔多斯盆地姬塬油田红井子地区长9油层组的石油富集规律。长7烃源岩生成的油气以流体过剩压力为主要驱动力,通过孔隙和裂缝运移至长9储层;长7烃源岩排烃强度有限、动力不足,使油气无法完全充满长9储层,而长9内部普遍发育的底水进一步阻碍了油气向下运移;长9顶部稳定发育的隔层为油气聚集提供了必要的遮挡条件,少部分油气在长9内部夹层发育部位聚集;在具备有效遮挡的条件下,受岩性与物性的控制,油气优先聚集在长9¹顶部物性条件好的储层中。从砂体顶面构造与试油、试采效果关系来看,构造起伏对长9油气聚集的影响不大。

关键词: 隔层, 烃源岩, 石油富集规律, 延长组, 姬塬油田, 鄂尔多斯盆地

Abstract:

The paper summarized the hydrocarbon accumulation pattern in the formation based on analysis of logging and core data,relationship among lithology,physical property,electrical property and oil-bearing situation,as well as formation test and production test results from the Chang-9 reservoir in the Yanchang Formation of the Hongjingzi block in Jiyuan oilfield,Ordos Basin.It is suggested that the oil and gas generated in source rocks of the Chang-7 layer were mainly driven by the excess flow pressure inside and migrated to the Chang-9 reservoirs through pores and fractures.However,the hydrocarbon expulsion in Chang-7 was not strong enough to fully fill up the Chang-9 reservoirs.In addition the bottom water widely developed in the Chang-9 reservoirs impeded the further downward migration of hydrocarbons.The top barriers inside the Chang-9 provided the sealing conditions necessary for hydrocarbon accumulation in the reservoirs,resulting in the enrichment of some hydrocarbons in interlayers inside the Chang-9.Hydrocarbons might first accumulate in top layers of the Chang-9¹ where the physical properties were more favorable due to the dual control of lithology and physical properties.The relationship between structure features and formation testing as well as production testing results demonstrates that the structural relief has very little effect on oil and gas accumulations in the Chang-9 reservoirs.

Key words: barrier, source rock, hydrocarbon accumulation pattern, Yanchang Formation, Jiyuan oilfield, Ordos Basin

中图分类号:

TE122.3

陈朝兵,朱玉双,谢辉,等. 姬塬油田红井子地区延长组长9油层组石油富集规律[J]. 石油与天然气地质, 2012, 33(5): 758-765. doi: 10.11743/ogg20120513 Chen Zhaobing,Zhu Yushuang,Xie Hui,et al. Accumulation patterns of the Chang-9 oil reservoir in the Yanchang Formation of Hongjingzi area in Jiyuan oilfield[J]. Oil & Gas Geology, 2012, 33(5): 758-765. doi: 10.11743/ogg20120513

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姬塬油田红井子地区延长组长9油层组石油富集规律

Accumulation patterns of the Chang-9 oil reservoir in the Yanchang Formation of Hongjingzi area in Jiyuan oilfield

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