| 陕北华庆地区长8油藏复杂水体成因与分布 |
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| 引用本文： | 董满仓,杨水胜,王全,付国民.陕北华庆地区长8油藏复杂水体成因与分布[J].西北地质,2021(1). |
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| 作者姓名： | 董满仓 杨水胜 王全 付国民 |
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| 作者单位： | 延长油田股份有限公司;延长油田股份有限公司勘探开发技术研究中心;长安大学地球科学与资源学院 |
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| 基金项目： | 国家示范工程项目“鄂尔多斯盆地大型低渗透岩性地层油气藏开发示范工程”(2011ZX05044);中国博士后基金“鄂尔多斯盆地南部特低渗储层精细评价及地质模型研究”项目(200704201489)联合资助。 |
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| 摘 要： | 陕北华庆地区长8油藏复杂的油水关系及其水体成因与分布规律是目前制约该区开发部署的关键因素之一。在综合分析复杂水体控制因素基础上,对复杂水体成因进行剖析,建立水体成因模型。研究表明:陕北华庆地区长8油藏水体分布受储层结构差异、孔隙沥青充填、绿泥石膜-有机质复合体赋存及储层润湿性等因素共同控制;将水体划分为高渗带残余沥青充填包水带、局部边底水、高渗带砂体致密透镜体滞留水体、顶部泥岩段隔档未置换带水体、致密砂岩透镜体水体、河道边部层间夹层隔档水体等成因类型;高产油井与高产油低产水的油水同层井储层物性好,沥青等充填少,且长7主泥岩段与长8储层直接接触或相距较近,无夹层或很少;在勘探开发部署中,依据不同水体成因分析,因地制宜规避水体,调整部署。
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| 关 键 词： | 复杂水体 成因类型 储层 长8油藏 华庆地区 |
Origin and Distribution of Complex Water Body in Chang8 Reservoir in Huaqing Area,Northern Shaanxi |
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| DONG Mancang,YANG Shuisheng,WANG Quan,FU Guomin.Origin and Distribution of Complex Water Body in Chang8 Reservoir in Huaqing Area,Northern Shaanxi[J].Northwestern Geology,2021(1). |
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| Authors: | DONG Mancang YANG Shuisheng WANG Quan FU Guomin |
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| Institution: | (Yanchang oilfield Co.,Ltd.,Yan'an 716000,Shaanxi,China;Exploration and development research institute,Yanchang oilfield Co.,Ltd.,Yan'an 716001,Shaanxi,China;College of Earth science and resources,Chang an University,Xi'an 710054,Shaanxi,China) |
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| Abstract: | The complex relationship of oil and water,the origin and distribution of water body of chang8 oil reservoir in Huaqing area of northern Shaanxi province,are the key restricting factors on the development and deployment in this area.Based on the comprehensive analysis of the controlling factors of complex water body,this paper analyzes the genesis of complex water body and establishes a genesis model of water body.The results show that the water distribution of Chang8 reservoir is controlled comprehensively by reservoir structure difference,pore bitumen filling,chlorite membrane-organic complex and reservoir wettability.The water is divided into such genetic types as residual asphalt filling and filling water belt in hyperpermeability zone,local edge and bottom water,retained water of dense lens body in hyperpermeability zone sand body,water body in top mudstone segment without displacement,water body in tight sandstone lens body,and water body in interlayer and interlayer barrier body at the riverway edge.In addition,the main mudstone section of Chang7 is in direct contact with or close to the reservoir of Chang8,with no or a little interlayer.In the process of exploration and development,measures should be taken to adjust the deployment according to the origin of different water bodies. |
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| Keywords: | complex water body type of origin reservoir Chang8 reservoir Huaqing area |
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