利29油藏沙二段细分层系开发调整研究

发布时间：2019-01-19 18:20

【摘要】：利津油田隶属于胜利油区,其29断块注采井网不完善,地层能量得不到补充,产液量下降;单元的注采矛盾加剧,井网控制和水驱控制程度下降,导致注水开发形势严峻。利29块主力油层沙二段含油面积1.9km2、地质储量351.34×104t,井网控制程度68.6%,水驱控制程度仅有54.8%,边部井网未控制储量达116.7×104t,实施“二次开发”的潜力巨大。因此,通过对利津油田29块当前开发效果的分析,评价其储量动用情况、层系和井网适应性、水驱效果和能量状况,发现其存在的问题和进一步开发的潜力;同时,在剩余油富集区研究的基础上,对开发方案进行有针对性的调整设计,并对优选的最优方案的开发指标和采收率进行预测。预计方案实施后,单井控制储量可提升到14.7?104t;十五年末采出程度为37.8%,区块综合含水96.7%,提高采收率9.1%,增加可采储量33.0?104t;有效地改善了开发效果、提升了采收率。
[Abstract]:Lijin Oilfield belongs to Shengli oil area, its 29 fault block injection-production well pattern is not perfect, formation energy can not be replenished, liquid production is decreased, the contradiction between injection and production of unit is aggravated, well pattern control and water drive control degree decrease, which leads to serious situation of water injection development. The oil bearing area of the second member of the main oil formation of Block Li 29 is 1.9 km ~ 2, the geological reserves are 351.34 脳 10 ~ 4t, the control degree of well pattern is 68.6, the control degree of water drive is only 54.8%, and the uncontrolled reserve of well pattern in the edge part is 116.7 脳 10 ~ 4 t. The potential for the implementation of "secondary development" is enormous. Therefore, through the analysis of the current development effect of Block 29 in Lijin Oilfield, the reserve production situation, adaptability of strata and well pattern, water drive effect and energy status are evaluated, and the existing problems and potential for further development are found. At the same time, on the basis of the study of the remaining oil rich area, the development scheme is adjusted and designed, and the development index and recovery factor of the optimal scheme are predicted. It is estimated that after the implementation of the scheme, the controlled reserves of single well can be raised to 14.7104t, the recovery degree is 37.8t at the end of 15 years, the comprehensive water cut of the block is 96.77.The recovery factor is improved by 9.1and the recoverable reserve is increased by 33.0104t. It can effectively improve the development effect and enhance the recovery efficiency.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE34

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