鄂尔多斯盆地黑山梁油区油藏特征及剩余油分布规律初探

发布时间：2018-04-18 07:23

本文选题：鄂尔多斯盆地 + 黑山梁　；参考：《西北大学》2015年硕士论文

【摘要】：化子坪黑山梁油区自2004年投产至今,已进入稳定开发阶段。研究储层特征与油藏特征,是油区进行注水开发的基础；研究目前引起剩余油形成,控制其分布规律的因素,是提高油区采收率的关键。本研究综合运用地质、测井、生产静态、动态资料以及相邻区块前入研究成果,以沉积岩石学、石油地质学、油层物理、储层地质学、渗流力学为理论依据,开展油藏特征、剩余油分布类型及注水开发相应调整措施研究,为黑山梁油区实现增产增效,提高油田采收率的目提供理论依据。黑山梁油区主力产油层位为长62-1、长62-2、长63小层,属三角洲前缘亚相沉积。根据盆地烃源岩性质、延长组在各时期沉降中心变化规律所确定的构造格局今古相似区、结合盆地基底断裂与裂缝形成的优势运移通道方向,可以确定黑山梁油区油气充注方向为北西—南东向。油藏展布主要受砂体岩性、运移距离(与生烃凹陷距离)、沉积微相、构造背景、砂岩上倾方向封隔作用的影响,属构造、岩性同时控制的岩性油藏。垂向上主要发育三套油层,但由于沉积微相变化频繁,薄油层较发育。油藏主要靠弹性—溶解气驱,天然能量不足,因此需要进行注水开发。依据研究区油藏及储层岩石学特征,结合生产现状,划分剩余油注水受效区域,分析剩余油主要形成的原因有：储层微构造、砂体上倾尖灭、储层非均质性(包括储层层内非均质性、层间非均质性和平面非均质性)、开发策略及生产工艺。针对研究区剩余油分布特点,从垂向和平面两方面入手,提出相应的井网布局、油井转注、调整工艺措施的策略。
[Abstract]:Huaziping heishanliang area has been put into operation since 2004, has entered a stable development stage. The study of reservoir characteristics and reservoir characteristics, is the basis for water development in the present research; residual oil formation causes, factors controlling the distribution, is the key to improve oil recovery. In this study the integrated use of geological, logging, production the static and dynamic data and the adjacent blocks before entering the research results in sedimentary petrology, petroleum geology, reservoir geology, reservoir physics, fluid mechanics theory, reservoir characteristics, residual type and water injection development adjustment measures of oil distribution, for the heishanliang area to achieve production efficiency, and provide a theoretical basis for enhancing oil recovery rate the purpose of the heishanliang area. The main production horizon is long 62-1, long 62-2, 63 small layer, belongs to delta front subfacies. According to the characteristics of source rocks in the basin, the extension of group in each period of settlement Structure changes of the ancient center of similar area, combined with the advantages of migration direction of the formation of basement fractures and cracks, can determine the oil and gas filling direction heishanliang oilfield as NW se trending. Reservoir distribution is mainly affected by the lithologic, migration distance (and hydrocarbon generating sag, sedimentary microfacies, distance) tectonic background, sandstone updip sealing effect, vibration effect belongs to the tectonic, lithologic reservoir lithology and vertical control. There are three sets of reservoir sedimentary microfacies, but due to the frequent change of thin oil reservoir is developed. The reservoir mainly depends on the elasticity of dissolved gas flooding, lack of natural energy, so the need for water development. On the basis of research on petrologic characteristics of reservoir and reservoir, combined with production status, divide the remaining oil by water injection effect, analysis of the causes of residual oil formation are: reservoir structure, sand Piching, reservoir heterogeneity (including Inlayer heterogeneity, interlayer heterogeneity and plane heterogeneity), development strategy and production process. According to the characteristics of the distribution of remaining oil in the study area, from the two aspects of vertical and horizontal wells, proposed network layout, the corresponding converted injection wells and adjusting the process measures.

【学位授予单位】：西北大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

【参考文献】