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1)  logging facies
测井相
1.
The numerical well logging-microfacies model is established by means of extracting seven key logging facies elements from several well logging parameters which can reflect the variation of sedimentary microfacies and extracting several synthesis parameters by principal constituent analysis.
在关键井取心段沉积微相精细分析的基础上,通过研究各种沉积微相的测井响应特征,提取7个能反映沉积微相变化的测井相要素,并通过主成分分析提取若干可反映沉积微相变化的综合特征参数,建立各类沉积微相的测井识别模型,根据此模型对未取心井段的沉积微相进行自动识别。
2.
Logging data contain abundant information on geology,especially,sedimentary environment from which various parameters characteristic of different sedimentary environments can be obtained in order to establish models for sedimentary facies and logging facies in the studied area.
可从中提取表征沉积环境的各种特征参数,建立起某地区的沉积相测井相模型,应用模式识别的各种处理方法,便能划分出该地区的各种沉积相及沉积微相。
3.
With the use of Logging information such as natural potential,natural gamma,imaging logging,and diplog,the paper establish the correspondence between the sign of sedimentary facies and logging facies,then use the method of Core logging calibration methods divising the type of single well facies and microfacies.
论文综合运用自然电位、自然伽马、成像、倾角等多测井信息,建立沉积相标志与测井相标志之间的对应关系,并用岩心刻度测井的方法进行单井亚相、微相类型划分。
2)  electrofacies
测井相
1.
A lot of new knowledge such as sedi- mentation geological characeristics and electrofacies rules,has also been gained from systematically theoretical analysis,Which lays solid foundation for further development in Sulige gas field.
68m,通过仔细的岩心描述,获得了丰富的有关沉积地层方面的第一手资料,经过系统的理论分析,获得不少新的认识,如砂体的沉积地质特征、测井相规律等,为气田的下一步开发打下坚实基础。
2.
Gamma ray curve of the Upper Paleozoic in Daniudi gas field can be divided into 4 basic electrofacies types, including bell - shaped, funnel-shaped, box-like and finger - like electrofacies.
大牛地气田上古生界自然伽马曲线划分为四种基础测井相类型:钟形、漏斗形、箱形和指形。
3.
This paper introduces the models of electrofacies identification, based on the welllogging information, the model can be used to quantitatively fix the space location of electrofacies in drilled formation, and to set up electrofacies.
文章提出一种测井相识别模型,该模型用常规测井信息,定量地确定测井相在钻遇地层中的空间位置,建立测井相
3)  log facies
测井相
1.
Recognition of log facies is the key to the recognition of deposition facies and the identification of the features representing the nature o f log is very important for pattern recognition.
测井相识别是油田沉积相识别的重要内容 ,找出反应测井曲线本质的特征是模式识别的关键 。
2.
On the basis of realizing the sedimentary system and tectonics,the authors think the sedimentary facies of the Taiyuan Formation is barrier island,beach and delta facies in Tabamiao area in the north of Ordos Basin by observing cores,analyzing lithofacies and log facies.
在了解区域沉积背景的情况下,综合运用岩心观察、岩相分析、测井相分析等手段,确定鄂尔多斯盆地北部塔巴庙区块太原组为有障壁海岸沉积体系和无障壁海岸沉积体系的滨浅海相沉积与湖泊—三角洲相沉积。
3.
Through core observation,lithofacies analysis and log facies analysis,the sedimentary microfacies ofⅡoil-bearing strata,the 4th member of Aershan Formation,Ba19 block,Baolige oilfield, were studied systematically.
综合运用岩心观察、岩相分析、测井相分析等手段,对宝力格油田巴19断块阿四段Ⅱ油组沉积微相进行了系统研究。
4)  well logging facies
测井相
1.
Sedimentary facies analysis is dealt with in detail for the 1st-3rd sandstone beds in the second member of the Shahejie Formation on the basis of the relationship between the well logging facies and sedimentary facies.
本文在建立取芯井段岩-电转换关系及测井相-沉积相解释模型的基础上,对沙二段1—3砂组进行了详细的沉积相分析。
2.
The paper introduces a method to identify well logging facies using self organization neural network, which is a non-supervisor learning algorithm.
作者在本文中介绍了一种利用自组织神经网络进行测井相识别的方法。
3.
The model is based on the corresponding relations between the well logging facies and the geological facies defined by the key well studies.
该方法利用关键井研究建立的测井相与地质相的对应关系作为识别模式,通过向识别模式学习获得模式识别智能知识,从而利用这些智能知识识别未知井、未知点的微相类型。
5)  logfacies
测井相
6)  well logging lithofacies
测井岩相
补充资料:饱和度测井
      通过井筒,用测井仪器测量和计算储层岩石孔隙中的含油饱和度,以判别油、气层中原始含油、气、水饱和度或剩余油、气、水饱和度的分布。测量地层含油饱和度有自然电位、人工电位、自然γ射线、微测井、感应、侧向、声波、岩性密度、中子、中子寿命、碳氧比C/O能谱、介电等测井方法。根据地质条件和开采条件,选用其中几种方法,综合解释饱和度。
  
  油、气田开发初期,在裸眼井中测量原始含油气饱和度的常规测井方法是电阻率法。用上述方法获得的测井资料求出地层真电阻率和孔隙度,利用相应的室内实验数据,根据下列的阿尔奇公式,即可求出相应的地层含水饱和度:
  式中Sw为地层含水饱和度,Rw为地层水电阻率,Rt为砂岩储层真电阻率,∮为孔隙度;m、n、ab分别为胶结指数(或孔隙结构指数)、饱和度指数、孔隙度系数、饱和度系数。这些参数根据实验室岩电分析的岩心孔隙度、含水饱和度、电阻率求得。原始含油、气饱和度S0=1-Sw。对于泥质含量高的砂岩储层则需对粘土影响进行校正。
  
  在油田开发中,需要测得不同阶段的剩余油饱和度。注水开采的油田,一般注入淡水,其矿化度比油层水低得多,因而电阻率高,用电阻率法测定油水饱和度就很困难,目前采用的测井方法有常规测井方法加介电测井法或人工电位法。油和水的介电常数不同,利用介电测井法可不受地层水矿化度的限制,以判断油田注淡水后油、水饱和度的变化。但当油层电阻率小于40Ω·m和泥质含量增高时,介电测井法判断水淹层精度不高。人工电位法是利用注淡水后不同的含水饱和度造成的油层水矿化度的差异,来判别剩余油饱和度,在地层水矿化度小于10000ppm的条件下效果较好。这些方法同时配合常规测井方法如自然电位测井法,效果更好。上列方法只能测裸眼井。在已下套管的井中要用放射性测井为主的测井系列。
  
  C/O能谱测井法 石油含碳量高,水含氧量高,用C/O能谱测井仪测得每个油层中C、O原子的相对含量,就可以用来计算剩余油饱和度(S0)。孔隙度越高,求得S0的精度就越高。如孔隙度小于15%时,就不能用作定量分析。此法可以不受地层水矿化度限制,并能在套管井中测量。
  
  中子寿命测井法 地层水或注入水矿化度高时,水中含氯量多,氯的热中子俘获截面大,而油的热中子俘获截面小。热中子衰减时间与俘获截面成反比,测量热中子的俘获截面,即可求得剩余油饱和度。此法可在套管中测量。通常采用时间推移测井:即在油井完成后未开采前,进行第一次测井,求得原始含油饱和度(S0);油井开始生产后,注入相同于地层水的高矿化度水或让边、底水自然进侵,使油层含水饱和度不断增加,定期用此法检查,并将结果与原始情况对比,可得到当时的剩余油饱和度。当地层水矿化度小于20000ppm时,求得S0误差大,本法不能应用。
  
  测井-注入-测井法 在开发后期应用中子寿命测井仪测量水驱残余油饱和度的一种测井方法。此法有三个步骤:①先进行一次测井获得底数;②注入和地层水矿化度不同的水,要使两种地层水的俘获截面相差50mb(毫靶恩)以上,1mb为10-31m2;③重复测井。对比两次测井结果,即可求得残余油饱和度。此法精度高,一般误差小于 5%。可用作决定提高石油采收率方法的依据。关键在于要有一套严格的施工工艺:注入地层的水必须均匀,而且将油层水推至中子寿命仪探测范围以外;注入的压力小于地层破裂压力,以不损坏地层的孔隙结构为限。否则,就会影响精度。对含高矿化度地层水的储油层,在开发中期,用此法也可测定剩余油饱和度。
  
  

参考书目
   P.A.魏奇门著,华东石油学院译:《测井解释基础》,第一版,石油化学工业出版社,北京,1978。
   (P.A.Vichmann,Log Interpretation Fundamentals,Dresser Atlas Division, Dresser Industries Inc.,Houston,1975.)
   D.C.邦德等编著,王平等译:《残余油饱和度确定方法》,第一版,石油工业出版社,北京,1982。(D.C.Bondet al.,Determination of Residual Oil Saturation,Interstate Oil Compact Commission,Oklahoma,1978.)
  

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