[1]金宝强,陈建波,陈红兵,等.渤海QHD油田馆陶组低阻油层成因分析[J].复杂油气藏,2021,14(03):48-53.[doi:10.16181/j.cnki.fzyqc.2021.03.009]
 JIN Baoqiang,CHEN Jianbo,CHEN Hongbing,et al.Genesis analysis of low resistivity reservoirs in Guantao Formation of QHD Oilfield in Bohai Bay[J].Complex Hydrocarbon Reservoirs,2021,14(03):48-53.[doi:10.16181/j.cnki.fzyqc.2021.03.009]
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渤海QHD油田馆陶组低阻油层成因分析()
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
14卷
期数:
2021年03期
页码:
48-53
栏目:
油气开发
出版日期:
2021-10-25

文章信息/Info

Title:
Genesis analysis of low resistivity reservoirs in Guantao Formation of QHD Oilfield in Bohai Bay
作者:
金宝强陈建波陈红兵甄宗玉舒 晓
中海石油(中国)有限公司天津分公司渤海石油研究院,天津 300459
Author(s):
JIN BaoqiangCHEN JianboCHEN HongbingZHEN ZongyuSHU Xiao
Bohai Oilfield Research Institute,Tianjin Branch of CNOOC Limited,Tianjin 300459,China
关键词:
低阻油层地质成因微观机理试采评价渤海
Keywords:
low resistance oil reservoirgeological originmicro-mechanismtrial mining evaluationBohai Bay
分类号:
TE321
DOI:
10.16181/j.cnki.fzyqc.2021.03.009
文献标志码:
A
摘要:
渤海QHD油田馆陶组二段2小层发育一套电性特征和录井特征较为典型的低阻油层,因对其成因、流体类型及产能认识不清,一直未开发动用。为有效解决QHD油田产量接替问题,以该套低阻油层为研究目标,采用宏观和微观相结合的方法,通过分析地层水矿化度、沉积特征、构造圈闭等地质成因,明确了弱水动力条件沉积、低幅构造和岩性圈闭是低阻油藏形成的主控因素,为微观机理研究提供依据。综合利用岩心、薄片及分析化验等资料,对储层的岩石粒度、孔隙结构、黏土矿物、束缚水饱和度及导电矿物等微观成因进行分析,认为岩石粒度细和黏土矿物使孔喉结构复杂化以及束缚水饱和度偏高是低阻油层的主控因素。通过试采评价,证实了该套低阻油层具有较好产能,落实低阻储量约1 000×104 t,初步建成20×104 t年产油规模,充分证实了低阻成因分析的合理性,为类似老油田挖潜和新区勘探提供借鉴。
Abstract:
A set of low resistivity oil layers with electrical characteristics and typical logging characteristics is developed in the second layer of the second member of Guantao Formation in QHD Oilfield in Bohai Bay. Due to an unclear understanding of their genesis,fluid types,and productivity,the set of layers has not been used for development.In order to effectively solve the problem of production replacement in the QHD Oilfield,this set of low-resistance oil layers is used as the research target,and a combination of macro and micro methods is adopted. Through the analysis of geological causes such as formation water salinity,sedimentary characteristics,structural traps,etc.,it is clear that weak water dynamic condition deposition,low-amplitude structures,and lithological traps are the main controlling factors for the formation of low-resistance reservoirs,which provides information for micro-mechanism research. Through the comprehensive use of core,thin slices,and analytical laboratory data,it was analyzed the micro-genesis of the rock particle size,pore structure,clay minerals,irreducible water saturation,and conductive minerals of the reservoir. The analysis results indicated that the fine-grained rock and clay minerals complicate the pore throat structure,and high saturation of irreducible water are the main controlling factors for low-resistance oil layers. Through trial production evaluation,it was confirmed that this set of low resistance oil layers has good production capacities. The establishment of low-resistance reserves of about 1 000×104 t and the preliminary establishment of a 20×104 t annual oil production scale fully confirm the rationality of the low-resistance cause analysis. This can provide a reference for tapping the potential of similar old oilfields and exploring new areas.

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备注/Memo

备注/Memo:
收稿日期:2021-01-04;改回日期:2021-02-18。
第一作者简介:金宝强(1979—),硕士,高级工程师,现主要从事油气田地质综合研究工作。E-mail: jinbq@cnooc.com.cn。
基金项目:国家科技重大专项“渤海油田加密调整及提高采收率油藏工程技术示范”(2016ZX05058001)。
更新日期/Last Update: 2021-10-25