大庆F区块挥发性油藏流体特征及影响因素分析  

Volatile Oil Reservoir Fluid Characteristics in F Block,Daqing Oilfield and Affecting Factors Analysis

作　　者：夏惠芬[1] 王慎铭 张雁[2] 吕红磊 刘潇潇[1] 

机构地区：[1]东北石油大学提高油气采收率教育部重点实验室,黑龙江大庆163318 [2]大庆油田有限责任公司试油试采分公司,黑龙江大庆163412

出　　处：《石油化工高等学校学报》2015年第1期51-54,84,共5页Journal of Petrochemical Universities

基　　金：黑龙江省教育厅科学技术研究项目(12541z004)

摘　　要：运用气相色谱法对分离油和分离气进行了组成组分及原油物性分析。利用PVTsim得到F区块地层油组成组分，通过模拟多次脱气实验，研究了该区块原油的高压物性参数变化及影响其变化的因素，分析了分离级数及开采条件变化对流体组成及物性的影响。结果表明，该区块地层油具有轻烃（C1～C6）含量高、密度低、收缩性强、溶解气油体积比大的特点；与黑油相比，压力变化对PVT参数的影响更大；油藏流体 PVT 特征对分离级数具有强烈的敏感性，多级分离时，地层油收缩率较小，脱气量较小，产油量较大；小油嘴开采时，嘴前压力较高，原油中轻质组分脱气相对较少，采出的原油中轻质组分较高，轻质组分更容易被开采出来。The separation oil and gas component and physical property are analyzed with gas chromatography.The component of initial oil in place in F block is obtained by using PVTsim.The changes of PVT parameters of oil in F block is studied and the effect of separation stages and choke size change on the fluid composition and physical properties is analysized.The results are listed as follows：the initial oil in F block has a characteristic of high content of light hydrocarbon,low density,high shrinkage and high gas-oil ratio,and the change of pressure has a greater influence on PVT parameters.Compared with black oil,reservoir fluid has a strong sensitivity on separation stages.When multi-stage separation is applied,initial oil in place e has a characteristic of high shrinkage,small degassed amount and high oil production.When small choke is applied,the pressure before choke is high.So light component is more likely to be mined.

关 键 词：挥发性油藏 轻烃 组分 PVT 油嘴 分离级数 

分 类 号：TE133.1[石油与天然气工程—油气勘探]