【作者】 于江涛；

【导师】 谢俊；

【作者基本信息】 山东科技大学 ， 矿产普查与勘探， 2011， 硕士

【摘要】 本文针对长春岭油田低温、低压、高含蜡的特点,在对该油田开展了多个开发试验的基础上,综合利用各种勘探开发资料,以石油地质学、开发地质学、油藏工程及油藏物理等学科理论为指导,运用油藏动态分析方法,优选出适合该油田的开发方式。本文结合原油析蜡机理,通过一系列的原油析蜡的室内实验,分析了原油析蜡的影响因素,研究了析蜡对储层的伤害和产能的影响。结果表明,由于蜡的析出,封堵了或缩小了储层的微观孔隙,使油相渗透率大大降低,严重影响了油气的开采。运用油藏工程方法,结合长春岭油田的地质特征和流体性质,分别对该区已开展的蒸汽吞吐、蒸汽驱、热水驱、火烧油层等热采试验进行开发效果评价,分析了以上开发方式开采效率低的原因,认为长春岭油田主体开发适宜采用地层水加热回注的开采方式。在储层综合评价的基础上,利用Petrel软件,建立了长109区块的三维地质模型,包括各小层的构造模型、孔隙度模型和渗透率模型等,然后利用油藏数值模拟软件Eclipse,对该区块的水驱开发历史进行拟合。根据长109区块水驱动态分析结果,针对目前存在的问题,通过对不同井网方式、井排距、注采比、注水时机等多种开采方式的论证,对长109区块提出了多个开发调整方案,优选出了合理的开发方案,并以此来指导长春岭全区的开发。更多还原

【Abstract】 Changchunling oil field carried out a number of development tests, according to the reservoir features of low temperature, low pressure and high wax content. Based on the test results, comprehensived utilization various exploration and development datas, be directed by theoris of petroleum geology, development geology, petroleum reservoir engineering and reservoir physics, used reservoir performance analysis methods, the paper selected the reasonable development mode of Changchunling oil filed.Combined with crude oil wax precipitation mechanism, and by means of a series of crude oil wax experimentations, this thesis analyzed influencing factors of wax precipitation and dealed with damage of reservoir and effect on productivity caused by wax precipitation. The results indicated that the wax precipitation blocked or reduced the reservoir microscopic pore. So the oil permeability reduced greatly, and this affected oil recovery badly.Used reservoir engineering methods, and combined with the reservoir characteristics and fluid properties of Changchunling oilfiled, this paper evaluated the development effect of thermal recovery including steam soaking, steam flooding, hot-water flooding and combustion flooding. The causes of the poor efficiency on exploitation were analyzed in the article. And it considered that Changchunling oil field development should select formation water heating reinjection to Stratum.Based on the comprehensive evaluation on reservoir,3D geological model of chang109 block, which included the structural model, the porosity model and permeability model, was established using Petrel. Then making use of numerical reservoir simulation to try to match on water drive production historyand furthermore. According to waterflooding dynamic analysis result and in the light of the problems existing in chang109, the paper proved a various of exploitation methods from different well network pattern, well spacing, injection-production ratio and water flooding timing. A number of adjustment plans were made for developing chang109 block. Choosing an optimum plan will guide the development of the whole region.更多还原