内蒙古强1区块低渗砂岩储层开发方案研究
发布时间：2018-09-10 06:12
【摘要】：内蒙地区强1块构造上位于彰武盆地七家子洼陷的东北部。经过历年勘探,在凹陷北部长北背斜带获取较大的成果,在“下洼找油”的勘探思路指导下,再次开始对南部地区的研究工作,改变以往注重寻找高部位构造圈闭的工作方式,深入到洼陷中寻找有利的沉积相带。经过认真地分析认为:七家子洼陷沙海组暗色泥岩发育,具有一定程度的生油能力,且储集条件优良,在此洼陷构造落实的强参1东块部署强1井,在沙海组下段获得工业油流。因此全面拉开了内蒙古地区张强南部新一轮勘探研究的新篇章。通过对强1块地震、钻井、录井、取心、分析化验资料的分析整理,综合评价构造特征、油气水分布特征、油藏类型、流体性质、沉积特征、储层特征、温度系统、压力、渗流物理特征和试油试采试注分析等综合地质特征,精细刻画地质体,搞清开采特性,编制开发方案,明确了本块的开发原则、开发方式、井网、井距、注水方式、注采压力系统和合理压力水平等开发指标。获取以下成果和认知:1、油藏特征认识。在空间上,研究地域单井厚度、油层分布变化迅速,平面上观测,强1区块油层分布中南北断块有较大地不同,北块(强5块)以Ⅱ油组为主,Ⅰ油组受砂体展布与物性控制影响,所以分布受限;南块(强1-4块)Ⅰ、Ⅱ油组均较发育;纵向上观测,油层主要集中在沙海组下段煤层上下200m范围内,油层段位相对集中。因为主要受到砂体及物性的双重控制影响,归纳属于构造—岩性油藏。2、油藏工程设计。结合此区的油藏综合地质特征、试油试注试采分析等方面的研究,确立开发方式、开发原则、井网、井距、注水方式、注采压力系统及合理压力水平等详细开发的指标。3、储层特征研究。综合考虑完善的分析化验、系统取心的资料,对储层矿物的沉积特征、孔隙结构、岩石学特征、物性等储层特征的研究,充分评价沙海组储层特征。4、注采井别方案设计。在油藏地质特性的研究及油藏工程设计的基础上,精确定位油层富集区域,明确合理的注采井网,整体部署,实现高质量合理的开发。5、开发指标预测。对开发前期试油、试采的资料进行分析和论证,考虑平面上的产能不同,合理确定单井初期产量及递减率,准确地预测开发各项指标。通过对油藏进行综合地质特征的研究及试油试采试注详细的分析,精细描述刻画地质体,搞清开采的特性,编制完备的开发方案,实现高效合理开发的目的。其研究思路及技术方法对其它区域的相类似油藏开发研究具有积极的借鉴意义。
[Abstract]:The Qiang1 block in Inner Mongolia is located in the northeast of Qijiazi depression in Zhangwu Basin. After many years of exploration, under the guidance of the exploration idea of "Xiwa looking for oil", the research work in the southern region was started again, which changed the working mode of paying attention to the search for structural traps in the high position in the north of the sag, and obtained great achievements in the Changbei anticline belt of the north of the sag. Go deep into the sag to find favorable sedimentary facies. Through careful analysis, it is considered that dark mudstone of Shahai formation in Qijiazi sag has developed, has certain degree of oil generation ability, and the reservoir conditions are good. The Qiangshen 1 East Block, which is implemented in this sag structure, is deployed in Qiangshen 1 well. Industrial oil flow was obtained in the lower member of Shahai formation. Therefore opened the Inner Mongolia region Zhang Qiang south a new round of exploration research a new chapter. Through the analysis and arrangement of seismic, drilling, logging, coring and analysis of laboratory data, the structural characteristics, oil, gas and water distribution, reservoir types, fluid properties, sedimentary characteristics, reservoir characteristics, temperature system, pressure are comprehensively evaluated. The physical characteristics of percolation and the comprehensive geological characteristics such as oil test and production test and injection analysis, the detailed description of geological bodies, the clear understanding of exploitation characteristics, the compilation of development plans, the clear development principles, development methods, well pattern, well spacing, water injection mode of this block, Development indicators such as injection-production pressure system and reasonable pressure level. Obtain the following results and cognition: 1, knowledge of reservoir characteristics. In space, the thickness of single well in the study area, the distribution of oil layer changes rapidly, observed on the plane, the distribution of north and south fault blocks in Qiang1 block is quite different, and the north block (Qiang5 block) is dominated by oil group 鈪，
本文编号：2233608
[Abstract]:The Qiang1 block in Inner Mongolia is located in the northeast of Qijiazi depression in Zhangwu Basin. After many years of exploration, under the guidance of the exploration idea of "Xiwa looking for oil", the research work in the southern region was started again, which changed the working mode of paying attention to the search for structural traps in the high position in the north of the sag, and obtained great achievements in the Changbei anticline belt of the north of the sag. Go deep into the sag to find favorable sedimentary facies. Through careful analysis, it is considered that dark mudstone of Shahai formation in Qijiazi sag has developed, has certain degree of oil generation ability, and the reservoir conditions are good. The Qiangshen 1 East Block, which is implemented in this sag structure, is deployed in Qiangshen 1 well. Industrial oil flow was obtained in the lower member of Shahai formation. Therefore opened the Inner Mongolia region Zhang Qiang south a new round of exploration research a new chapter. Through the analysis and arrangement of seismic, drilling, logging, coring and analysis of laboratory data, the structural characteristics, oil, gas and water distribution, reservoir types, fluid properties, sedimentary characteristics, reservoir characteristics, temperature system, pressure are comprehensively evaluated. The physical characteristics of percolation and the comprehensive geological characteristics such as oil test and production test and injection analysis, the detailed description of geological bodies, the clear understanding of exploitation characteristics, the compilation of development plans, the clear development principles, development methods, well pattern, well spacing, water injection mode of this block, Development indicators such as injection-production pressure system and reasonable pressure level. Obtain the following results and cognition: 1, knowledge of reservoir characteristics. In space, the thickness of single well in the study area, the distribution of oil layer changes rapidly, observed on the plane, the distribution of north and south fault blocks in Qiang1 block is quite different, and the north block (Qiang5 block) is dominated by oil group 鈪，
本文编号：2233608
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