致密油储层不同尺度、多重介质建模方法研究——以吉木萨尔凹陷芦草沟组上甜点为例

发布时间：2018-08-04 21:21

【摘要】：致密油储层历经多重地质作用,储集体类型多样、尺度不一、分布离散、岩性混杂,常规建模不能有效刻画其内部复杂性.针对其发育不同尺度孔隙、复杂天然/人工缝网的特点,本文提出以致密砂岩储层微观孔隙结构表征、天然/人工裂缝的识别与描述技术为基础,集不同尺度孔隙、不同尺度天然/人工裂缝于一体的地质建模方法,即基于压汞资料,将孔隙型基质储层分级,相控随机模拟储层分布模型;以地震资料为主,结合蚂蚁体等技术,人机交互、确定性模拟大-中尺度天然裂缝;以测井解释小尺度、薄片鉴定微尺度天然裂缝为基础,地震参与随机模拟裂缝发育密度体,采用示性点过程法随机模拟小尺度与微尺度天然裂缝;以微地震资料为主,确定性加随机性综合模拟不同尺度人工压裂缝.以新疆吉木萨尔凹陷某油田开发先导试验区芦二段上甜点为例,按上述方法建立致密油藏模型,突出致密油藏特点,为数值模拟提供了高精度的多重介质油藏模拟静态模型.
[Abstract]:The dense reservoir has multiple geological functions. The reservoir types are diverse, the scale is different, the distribution is discrete, and the lithology is mixed. The conventional modeling can not effectively describe its internal complexity. In view of its characteristics of different scale pores and complex natural / artificial seams, this paper presents the characterization of micro pore structure of tight sandstone reservoirs, natural / artificial fractures. On the basis of identification and description technology, a geological modeling method is set up with different scale pores and natural / artificial fractures of different scales, that is, based on the mercury pressure data, the pore type matrix reservoir is graded and the reservoir distribution model is controlled by phase control, and the seismic data is based on the ant body technology, the human-computer interaction and the deterministic simulation of large and medium scale nature. Fracture; based on logging interpretation small scale and microscale identification of microscale natural fractures, earthquakes are involved in random simulation of fracture growth density, and random simulation of small scale and micro scale natural fractures by means of indicator process method, and artificial fracture of different scales is simulated with microseismic data, deterministic plus randomness is used to simulate different scale artificial fractures. Xinjiang Jimsar As an example of the reed two desserts in the development pilot area of an oilfield, a compact reservoir model is established according to the above method, and the characteristics of dense reservoir are highlighted, and a high precision multi medium reservoir simulation static model is provided for numerical simulation.
【作者单位】：东北石油大学地球科学学院;中国石油勘探开发研究院油气地质软件开发中心;大庆油田榆树林油田开发有限责任公司;
【基金】：国家高技术研究发展计划(863)项目“致密砂岩储层精细描述关键技术与软件”(2013AA064902) 国家自然基金“水平井河道砂体内部构型及对三次采油期剩余油形成机制研究”(41272153)联合资助
【分类号】：P618.13;P631.4

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