[1]李 冰,周 妍,许万坤,等.渤海东部疏松砂岩油藏水驱渗流特征及控制因素分析[J].复杂油气藏,2020,13(02):47-50.[doi:10.16181/j.cnki.fzyqc.2020.02.010]
 LI Bing,ZHOU Yan,XU Wankun,et al.Waterflooding seepage characteristics and control factors for unsolidatedsandstone reservoirs in eastern Bohai Sea[J].Complex Hydrocarbon Reservoirs,2020,13(02):47-50.[doi:10.16181/j.cnki.fzyqc.2020.02.010]
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渤海东部疏松砂岩油藏水驱渗流特征及控制因素分析()
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
13卷
期数:
2020年02期
页码:
47-50
栏目:
油气开发
出版日期:
2020-06-25

文章信息/Info

Title:
Waterflooding seepage characteristics and control factors for unsolidatedsandstone reservoirs in eastern Bohai Sea
作者:
李 冰1 周 妍2许万坤1 姜立富1李媛婷1
1.中海石油(中国)有限公司天津分公司,天津 300459;2.中国石油集团测井有限公司,陕西 西安 710077
Author(s):
LI Bing1ZHOU Yan2XU Wankun1JIANG Lifu1LI Yuanting1
1. Tianjin Branch of CNOOC(China)Co.,Ltd.,Tianjin 300459,China;2. CNPC Logging Company,Xi’an 710077,China
关键词:
渤海油田相对渗透率水驱油效率影响因素
Keywords:
BohaiOilfieldrelative permeabilitywater flooding efficiencycontrolling factors
分类号:
TE341
DOI:
10.16181/j.cnki.fzyqc.2020.02.010
文献标志码:
A
摘要:
为了更好地了解疏松砂岩油藏水驱开发特点,为提高水驱采收率提供依据,利用铸体薄片、压汞、扫描电镜、油水相渗、水驱油等测试手段,深入研究了渤海海域P油田馆陶组储层油水相对渗透率和水驱油效率,分析了疏松砂岩油藏水驱开发动态特征。结果表明:研究区储层岩石成分以碎屑长石砂岩与长石岩屑砂岩为主,分选差、磨圆度低;孔隙类型为原生粒间孔、溶蚀粒间孔;喉道类型以片状、缩颈状为主;原油黏度对油水相对渗透率和水驱油效率存在影响,原油黏度愈高,油水相相对渗透率愈低,水驱油效果愈差;研究区储层黏土矿物含量较高,喉道以缩颈状为主,亲水黏土矿物容易发生膨胀堵塞喉道,在较大的生产压差下易产生速敏,适当控制压差,提前注入防膨试剂对注水具有明显效果。
Abstract:
To better understand the development characteristics of waterflooding in unsolidated sandstone reservoirs,and to provide the basis for improving waterflooding recovery,the oil-water relative permeability and waterflooding efficiency of Guantao Formation in P Oilfield in Bohai Sea was further studied by means of casting slice,mercury injection,scanning electron microscopy,oil-water phase permeability and water displacing oil,and so on. And then it was analyzed the dynamic characteristics of waterflooding development.The results show that the composition of reservoir rocks in the study area is mainly clastic feldspar sandstone and feldspar detrital sandstone,with poor separation and low roundness.The pore types are primary intergranular pores and dissolved intergranular pores,and the throat types are mainly flaky and neck-like.The viscosity of crude oil has an effect on the oil-water relative permeability and the waterflooding efficiency,and the higher the crude oil viscosity,the lower the oil-water relative permeability,the worse the waterflooding efficiency.The clay mineral content of the reservoir is relatively higher,the throat types are mainly neck-like,and the hydrophilic clay minerals are prone to expand and block the throats. Under large production pressure difference,it is easy to produce speed sensitivity. When the anti-swelling reagent is injected in advance,it has obvious effect.

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备注/Memo

备注/Memo:
收稿日期:2020-01-19;改回日期:2020-03-24。
第一作者简介:李冰(1987—),硕士,现主要从事沉积与储层评价。E-mail:libing32@cnooc.com.cn。
基金项目:国家科技重大专项“渤海油田高效开发示范工程(编号:2016ZX05058)”。
更新日期/Last Update: 2020-06-30