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王庄油田郑14块岩性以含砾砂岩、砾状砂岩夹砾岩为主,储层为高孔、低渗透性储层,主要目的层沙三上,埋藏深度大约为1290-1350米。原油密度0.9868-0.9910g/cm3,地面粘度9195-28725mpa.s,凝固点12-17℃,为特稠油油藏。郑14砂体成藏受构造、岩性两方面因素控制,油水界面大致在-1350m,储集砂体在剖面上呈透镜状,在上倾方向形成岩性圈闭,对油气的成藏起控制作用,为典型的具有边底水的构造岩性油藏。由于边底水活跃,目前该块存在主要问题是断块综合含水上升速度快,断块开发效果变差。本文分析了郑14块边底水入侵时间、来水方向、上升原因,着重介绍了本区块主要运用的抑制边底水入侵的方法、原理,及其应用效果。
The lithology of Zheng 14 block in Wangzhuang Oilfield is dominated by pebbly sandstone and conglomerate of gravel sandstone. The reservoirs are high-porosity and low-permeability reservoirs. The main purpose is sandstone III, with a buried depth of 1290-1350 meters. The crude oil density is 0.9868-0.9910g / cm3, the ground viscosity is 9195-28725mpa.s, the freezing point is 12-17 ℃, which is a special heavy oil reservoir. The reservoir formation of Zheng 14 sand body is controlled by both structural and lithological factors. The oil-water interface is roughly at -1350 m. The reservoir sand bodies are lenticular in section and form lithologic traps in the updip direction. The control action is a typical structural lithologic reservoir with edge water. Due to the active water at the edge of the bottom, the main problem currently exists in this block is that the integrated water cut of the block increases rapidly and the effect of block development becomes worse. This paper analyzes the time, inflow direction and rising reasons of edge water in Zheng 14 block, and mainly introduces the methods, principles and application effects of mainly suppressing edge water intrusion in this block.