發(fā)布時間：2018-11-03 20:17

【摘要】：高郵凹陷周莊油田戴一段油藏存在油藏類型及砂體展布等認識不清的問題,在前人研究的基礎上,通過巖心觀察和粒度特征分析等研究認為,研究區(qū)主要發(fā)育扇三角洲沉積,局部發(fā)育三角洲沉積。以砂體的展布規(guī)律為主要依據的物源方向進行研究認為,周莊地區(qū)E2d1沉積時期存在來自吳堡低凸起和北西方向的"雙向物源",并利用單一小層的解剖,在E2d11砂組4小層中發(fā)現了2個物源交匯處發(fā)育的一條砂巖尖滅帶。研究區(qū)E2d12下段9、10號小層屬于巖性上傾尖滅油藏。通過對該油藏類型的新認識,重新預測了砂體的邊界,并成功對周15井實施了側鉆,為該油田的滾動擴邊提供了方向,初步估算可增加經濟可采儲量超過60×104t。
[Abstract]:In Zhouzhuang Oilfield, Gaoyou Depression, there are some problems with unclear understanding of reservoir types and distribution of sand bodies. On the basis of previous studies, through core observation and grain size analysis, it is concluded that fan delta sediments are mainly developed in the study area. Locally developed delta deposits. On the basis of the distribution of sand bodies, it is concluded that in the E2d1 sedimentary period of Zhouzhuang area, there are "bidirectional provenances" from the low uplift of Wubao and the direction of NW, and the anatomy of the single sublayer is used. A sandstone pinnacle zone developed at the intersection of two provenances has been found in the 4 layers of the E2d11 sand formation. The substrata 9 and 10 of the lower E2d12 in the study area belong to the lithologic updip pinnacle reservoir. Through a new understanding of the reservoir type, the boundary of sand body is repredicted, and the sidetracking of well Zhou15 is successfully carried out, which provides a direction for the rolling expansion of the oil field. The preliminary estimation can increase the economic recoverable reserves by more than 60 脳 10 ~ 4 t.
【作者單位】： 中國石化江蘇油田分公司;
【基金】：中國石化科技攻關項目“小斷塊油藏油水過渡帶提高采收率技術研究”(P13125)
【分類號】：P618.13

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