【作者】 李秀梅；

【导师】 陈汉林； 韩永华；

【作者基本信息】 浙江大学 ， 地质学， 2011， 硕士

【摘要】 杏南开发区油田开采已进入高含水后期,高渗透厚油层动用程度较高,剩余油挖潜难度越来越大,调整对象逐渐转向薄差的河间砂油层。近几年三次加密调整井平均单井射开砂岩厚度11.14m,有效厚度只有1.21m,投产初期含水较高,说明非主力油层也得到了很好的动用,寻找高含水后期潜力油层是当前面临的重要问题。杏南开发区河间砂分布广泛,剩余潜力较大。论文通过对密井网条件下河间砂的精细研究研究,将空间复杂的储集砂体纵向上解剖到单一沉积时间单元,并在平面上识别出5种沉积微相和3类成因砂体,真实展现河间砂的形态、规模、内部结构以及不同类型河间砂与河道砂连通接触关系,提出不同类型的河间砂在岩性、物性具有多层次、递变性等特点,最后通过典型层段的现场试验,分析了不同类型河间砂的动用状况、剩余油分布规律以及开发效果,对油田下一步开发方案调整和剩余油挖潜具有重要的指导意义。更多还原

【Abstract】 The production of xingnan development zone oilfield has entered into the later high water-cut stage, so the utilization degree of the high permeable and thick oil layer is comparatively higher, and the difficulty in excavating the potential of the residual oil is increasing more and more, which decides that the adjusting target is gradually turned to the thin and poor strata。In recent years, in addition to the high water-cut in earlier stage, the average individual well perforating sandstone thickness of tertiary infilling adjustment wells is 11.14 meters but the effective thickness is only 1.21 meters, which illustrates that the non-main reservoirs has also been utilized greatly and the search for potential oil layers of later high water-cut stage is the important problem we are currently facing。The interchannel sandbody of xingnan development zone has a widely scattered scale, the residual potential is comparatively large。The deep study into the riveral-sand shows that, on conditions of infilling wells, we need to divide the space difficult reserved sand-body longitudinally into individual sedimentary time unit, thus we can figure out 5 kinds of micro phase models horizontally and conclude 3 kinds of genetic sand-body。These show what are the formation, scale, inner structure of the riveral-sand, propose the opinion that different kinds of genetic interchannel sandbodies have different lithologies, and their physic properties are multilevel and increasingly changeable, figure out the connecting contact relationship between the different sedimentary micro-phase and different riveralsand and interchannel sandbodyes, the producing condition and the scattering regulation of the residual oil, and carry out sight test to some typical layers, analyze the application outcome, which makes the development and adjustment more targeted。更多还原