中国石油大学本科毕业设计..doc

对喇嘛甸油田的地质特征精细研究 摘 要 对喇嘛甸油田的地质特征精细研究，分析喇嘛甸油田储层非均质特征、动用状况和剩余油分布规律。针对喇嘛甸油田特高含水期厚油层不同结构界面的情况和剩余油分布的类型提出了3种厚油层精细挖潜的采油工艺长胶筒封隔器细分注水、堵水工艺胶筒长1~3m封卡薄隔层及附近的炮眼封卡结构界面厚度为0.2m层内水力割缝射孔工艺该工艺定位控制精度高割缝无震动对薄夹层及水泥环不产生损伤试验的最小隔层厚度达到0.2m层内定位平衡压裂工艺利用6种工艺管柱可保护上、中、下结构界面及压裂层上、下结构界面,实施的结构界面厚度达到0.4m这3种精细挖潜工艺均得到了应用对特高含水期厚油层挖潜有较好效果Abstract Lamadian field of the geological characteristics through fine reservoir description, analysis Lamadian reservoir heterogeneity characteristics, status and use of the remaining oil distribution .On the view of different construction interface and different type of remaining oil distribution in thick formations of extra-high water cut period in Lamadian Oilfield, three kinds of fine inner potential excavation technology for thick oil formation were presented. The first one is the fine division water injection and plugging in a long rubber packer with a seal length of1~3meters. This packer can be used to jam the thin barrier and neighbour borehole. The thickness of construction interface jammed by this packer is0.2meter.The second one is the inner hydraulic slotting perforation technology. This technology is characterized by high accuracy for positional control and no quaking for slotting .The operation of this technology has no damage to the thin interbed and cement sheath. The barrier thickness is minimized to0.2meter.The third one is the inner positional balance fracturing technology. Six kinds of string can be used to protect the construction interface. The construction interface of0.4meter in thickness was tested. The three kinds of fine potential excavation technology were all used in large scale and became the new mode for inner potential excavation of the thick formation in the extra-high water cut period. This paper illustrates the mechanism of oil production by cyclic waterflooding and studies the combination method and reasonable parameters of waterflooding in the late stage of high water cut of Lamadian Oil Field. Typical examples prove that cyclic wate