Hydrocarbon charging histories of the Ordovician reservoir in the Tahe oil field, Tarim Basin, China

INTRODUCTION Researches on hydrocarbon charging historyare essentially important to exploration and de-velopment, especially for the reservoirs subject tomultiple hydrocarbon generations, discharges, mi-grations and accumulations, as was the case of theOrdovician reservoir of the Tahe oil field located atthe southwest slope of the Akekule uplift, TarimBasin, China. Regarding the hydrocarbon charginghistories of the Ordovician reservoir, previousstudies based on burial histories (Y…     

塔里木盆地塔中地区奥陶系裂缝储层发育特征及预测

裂缝是塔里木盆地奥陶系碳酸盐岩沉积的重要渗流通道和储集空间,因此裂缝研究对油气藏开发具有重要意义。利用岩心、测井等资料对裂缝识别,选择裂缝相关参数（如线密度及充填性等）予以统计,研究塔中地区裂缝发育垂向及平面分布规律。结合裂缝发育规律,研究裂缝发育受岩性、层厚、断层及岩溶的影响关系。主要基于地质统计方法,预测塔中地区奥陶系裂缝发育的有利区带集中在主要断裂带附近及断裂带交汇处。预测的有利区带与其他方法如三维有限元数值模拟方法预测的区带一致。     

Geochemical characteristics of the fluid inclusions in the Gangxi Fault Belt, Huanghua Depression, Bohai Bay Basin, China

We studied the geochemical characteristics of the fluid inclusions in the Ordovician carbonates and the Oligocene Shahejie Formation sandstones from 15 wells in the Gangxi Fault Belt, Huanghua Depression. The fluid inclusions are all sec- ondary with gas/liquid ratio of 5%~10%. Base on Raman they are mainly composed of H2O, CO2 and CH4. The homogenization temperatures, combined with burial and geothermal history of the host rock, indicate that the fluid flows in the Shahejie Formation and the Ordovician carbonates were trapped in Neocene. Using a VG5400 mass spectrometer, the helium isotopic compositions were analyzed. Interpretation of results suggested a significant amount of mantle-derived helium mainly accumulating in the intersections of the NWW trending Xuzhuangzi and NE trending Gangxi faults. The maturity of hydrocarbon decreases from the intersection to the outside pointing out that the fluid related to the NWW trending Xuzhuangzi and NE trending Gangxi faults. These factors implied the fluid inclusions have a close relationship to the local tectonic setting. Gangxi Fault Belt experienced intensive Neo-tectonic activities in Cenozoic. Widespread faulted-depressions and strong volcanic eruptions manifested its tec- tonic status of extensional stress field. Mantle uplift caused the movement of magma that carried mantle-derived gases and deep heat flows, the deep-rooted tension faults provided the passages for the gases and heat flows to shallow crust levels.     

Identification of waterflooded zones and the impact of waterflooding on reservoir properties of the Funing Formation in the Subei Basin, China

This paper describes the identification of waterflooded zones and the impact of waterflooding on reservoir properties of sandstones of the Funing Formation at the Gao 6 Fault-block of the Gaoji Oilfield,in the Subei Basin,east China.This work presents a new approach based on a back-propagation neural network using well log data to train the network,and then generating a cross-plot plate to identify waterflooded zones.A neural network was designed and trained,and the results show that the new method is better than traditional methods.For a comparative study,two representative wells at the Gao 6 Fault-block were chosen for analysis:one from a waterflooded zone,and the other from a zone without waterflooding.Results from this analysis were used to develop a better understanding of the impact of waterflooding on reservoir properties.A range of changes are shown to have taken place in the waterflooded zone,including changes in microscopic pore structure,fluids,and minerals.     

Exploring the interplay of cultural capital,habitus, and field in the life histories of two West African teacher candidates

This paper captures the life histories of two West African pre-service teachers pursuing their education in the United States. Based on a larger study examining the life histories of 45 undergraduate pre-service teachers, these narratives focus specifically on international student experiences in the US. Grounded in Bourdieu’s theory of habitus, capital, and field, the life histories of Bakar and Selma illustrate how their capital and habitus become contingent on the field(s) (i.e. sites, time, and agents within a specific context) in which they are situated. The narratives of Bakar and Selma captured their early educational experiences, teacher preparation practices, and future possibilities as they moved in and out of different fields where the exchange of capital occurred, which then led to restructuring and/or de-valuerization of certain habitus. The experiences of Bakar and Selma heighten our awareness of the capital and habitus deployed in a variety of contexts – fields – in the US and elsewhere. We conclude by incorporating discussion focused on working with international teacher candidates.     

Dual influence of the rejuvenation of Southern Tianshan and Western Kunlun orogen on the Cenozoic structure deformation of Tarim Basin, northwestern China： A superposition deformation model from Bachu Uplift

Based on new high-resolution seismic profiles and existing structural and sedimentary results,a superposition de-formation model for Cenozoic Bachu Uplift of northwestern Tarim Basin,northwestern China is proposed. The model presents the idea that the Bachu Uplift suffered structure superposition deformation under the dual influences of the Cenozoic uplifting of Southern Tianshan and Western Kunlun orogen,northwestern China. In the end of the Eocene (early Himalayan movement),Bachu Uplift started to be formed with the uplifting of Western Kunlun,and extended NNW into the interior of Kalpin Uplift. In the end of the Miocene (middle Himalayan movement),Bachu Uplift suffered not only the NNW structure deformation caused by the Western Kunlun uplifting,but also the NE structure deformation caused by the Southern Tianshan uplifting,and the thrust front fault of Kalpin thrust system related to the Southern Tianshan orogen intrudes southeastward into the hinterland of Bachu Uplift and extends NNE from well Pi1 to Xiaohaizi reservoir and Gudongshan mountain,which resulted in the strata folded and denuded strongly. In the end of the Pliocene (late Himalayan movement),the impact of Southern Tianshan orogen decreased because of the stress released with the breakthrough upward of Kalpin fault extending NE,and Bachu Uplift suffered mainly the structure deformation extending NW-NNW caused by the uplifting of Western Kunlun orogen.     

Putting working-class mothers in their place: social stratification,the field of education,and Pierre Bourdieu's theory of practice

This article explores how a small sample of working-class mothers encounters the field of education. In the management of family and their children's schooling, mothers bring to bear and replicate ways of knowing that are embodied, are historical and that offer many-sided insights into profoundly stratified societies. Here I draw on Bourdieu's theory of practice as a heuristic device and focus only on the field while leaving in suspension his other conceptual arsenal. Bourdieu argued that understanding the social space in which interactions occur is pivotal, characterised as it is by ‘permanent relationships of inequality'. This study shows that mothers bring to the field their embodied history, their habituated practice, and their access to capitals. The women I interviewed know the precariousness of how they occupy the field of schooling, negotiated through a matrix of intersected positionings and classifications that are embodied.     

中文概要

研究目的：以空间相关系数、降雨最和降雨次数为指标,利用实测的气象数据,评估一个新的多站天气发生器GiST在中国东部钱塘江流域模拟降雨的性能。任此基础上,结合全球气候模式Hadgem2-ES,分析在浓度路径RCP8．5下GiST模拟2071-100年的降雨情况。     

《剑桥高阶学习词典》3版中的语义网络构建

大脑中的语言按照一定的语义关系排列在语义场之中,这些有着某种语义关联的词汇之间构成了一个语义网络。《剑桥高阶学习词典》3版在词汇语义网络构建方面做了大量的工作,主要使用的方法有：词库、词汇构建、参见、搭配、释义及插图等。《剑桥高阶学习词典》3版在语义网络构建方面也存在不足：同义关系和反义关系没有在词典中展现;虽然提供了大量与词目词相关主题词汇或词目词的近义词,但众多词汇信息堆积在一起,显得有些凌乱;在宏观结构没有提及语义网络信息等。