石油与天然气地质 ›› 2015, Vol. 36 ›› Issue (1): 128-135.doi: 10.11743/ogg20150116

• 层序与储层 • 上一篇    下一篇

三角洲前缘水下分流河道单砂体叠置机理及对剩余油的控制——以扶余油田J19区块泉头组四段为例

封从军1,2, 鲍志东3, 代春明4, 张兆谦5   

  1. 1. 西北大学 地质学系 大陆动力学国家重点实验室, 陕西 西安 710069;
    2. 中国石油 东方地球物理公司, 河北 涿州 072751;
    3. 中国石油大学 油气资源与探测国家重点实验室, 北京 102249;
    4. 中国石油 吉林油田分公司 扶余采油厂, 吉林 松原 710054;
    5. 中国石油 大庆油田有限责任公司 勘探开发研究院, 黑龙江 大庆 163712
  • 收稿日期:2014-07-11 修回日期:2014-10-20 出版日期:2015-02-08 发布日期:2015-02-11
  • 第一作者简介:封从军(1981-), 男, 博士、讲师, 储层地质综合研究.E-mail:fengcj@nwu.deu.cn
  • 基金项目:

    西北大学大陆动力学国家重点实验室科技部专项(BJ14267);陕西省教育厅科研计划项目(14JK1754).

Superimposition patterns of underwater distributary channel sands in deltaic front and its control on remaining oil distribution:a case study from K1q4 in J19 block, Fuyu oilfield

Feng Congjun1,2, Bao Zhidong3, Dai Chunming4, Zhang Zhaoqian5   

  1. 1. State Key Laboratory of Continental Dynamics, Northwest University, Xi'an, Shaanxi 710069, China;
    2. Bureau of Geophysical Prospecting, CNPC, Zhuozhou, Hebei 072751, China;
    3. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China;
    4. Fuyu Oil Production Plant, PetroChina JiLin Oilfield Company, Songyuan, Jilin 710054, China;
    5. Exploration and Development Research Institute, PetroChina Daqing Oilfield Company, Daqing, Heilongjiang 163712, China
  • Received:2014-07-11 Revised:2014-10-20 Online:2015-02-08 Published:2015-02-11

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摘要：

以松辽盆地扶余油田J19区块泉头组四段为例，在沉积微相研究的基础上，综合应用岩心、测井、生产动态等资料，对三角洲前缘复合水下分流河道内部的单砂体进行定量识别。研究结果表明，研究区单砂体叠置类型主要包括分离式、叠加式、切叠式、替代式4种垂向叠置样式和间湾接触、堤岸接触、对接式、侧切式、替代式5种平面接触样式，并总结了相应的识别标志。研究区单砂体宽度介于200~800m，单砂体厚度介于4~8m。分离式的叠置砂体顶部剩余油富集；叠加式、切叠式、替代式（垂向）叠置类型的砂体厚度不同、注水方向不同，对剩余油分布范围有较大影响。间湾接触、堤岸接触、对接式的砂体横向不连通，在两个单砂体之间易形成侧翼剩余油富集；侧切式和替代式的砂体，横向连通性好，剩余油不易富集。

关键词: 水下分流河道, 三角洲前缘, 单砂体, 泉头组, 剩余油, 扶余油田

Abstract:

Taking the fourth member of the Quantou Formation in J19 block of Fuyu oilfield as an example, single sandbodies identification was performed within composite underwater distributary channels in delta front by integrating various data including cores, logging and production performance on the basis of sedimentary micro-facies.The results show that there are four main vertical superimposition patterns of single sandbodies, including separated type, overlap-type, overlay type and substitution type, and five lateral contact patterns, including interdistributary contact, embankment contact, butt-joint, side shear and substitution type.The corresponding identification marks are also summarized.The width of single sandbody is in the range from 200-800m and their thickness range from 4-8m.The tops of the separated type sandbodies are rich in remaining oil.In overlap-type, overlay type and substitutional type sandbodies are different in thickness and water injection direction, thus strongly influencing remaining oil distribution.Sandbodies of interdistributary contact, embankment contact and butt-joint kinds are not interconnected laterally, thus remaining oil possibly occurring in the flanks of the sandbodies.In contrast, sandbodies of side shear and substitutional type are well connected laterally, unfavorable for enrichment of remaining oil.

Key words: underwater distributary channel, delta front, single sandbody, Quantou Formation, remaining oil, Fuyu oilfield

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