河南省栾川I县深部探明超大型钼多金属矿

以中海石油（中国）有限公司天津分公司薛永安为首席专家的团队首次在中国东部老勘探| 区一渤海湾盆地发现了中国东部最大的以变质岩潜山为储层的渤中19-6大型整装凝析气田。项^ 目团队针对渤海湾盆地特点,创新提出“湖盆成气”理论,指出油型盆地在某些构造与沉积特殊的凹| 陷具有形成大型天然气田的地质条件,从而揭示了油型湖盆在寻找大型油田之后寻找大型天然气田| 的机会。该凝析气田已上交国家探明天然气储量超千亿立方米,凝析油储量超亿吨。渤中19-6大| 型整装凝析气田的发现是我国天然气成藏理论发展的成果,对保障国家能源安全、京津冀生态文明建| 设、助推雄安新区绿色发展有重大作用。     

渤海湾盆地渤中凹陷探明全球最大的变质岩凝析气田

正以中海石油(中国)有限公司天津分公司薛永安为首席专家的团队首次在中国东部老勘探区——渤海湾盆地发现了中国东部最大的以变质岩潜山为储层的渤中19-6大型整装凝析气田。项目团队针对渤海湾盆地特点,创新提出"湖盆成气"理论,指出油型盆地在某些构造与沉积特殊的凹陷具有形成大型天然气田的地质条件,从而揭示了油型湖盆在寻找大型油田之后寻找大型天然气田的机会。该凝析气田已上交国家探明天然气储量超千亿立方米,凝析油储量超亿吨。渤中19-6大型整装凝析气田的发现是我国天然气成藏理论发展的成果,对保障国家能源安全、京津冀生态文明建设、助推雄安新区绿色发展有重大作用。     

渤中22-1构造碳酸盐岩储层岩溶识别及影响因素

以渤中22-1潜山构造为研究目标,通过岩芯、薄片、成像测井等资料,研究潜山碳酸盐岩储层基础特征、岩溶识别及影响因素。结果表明,研究区岩性主要为白云岩类、灰岩类及过渡岩类,储集空间以溶蚀孔、洞、缝为主,平均孔隙度为4.1%,储层主要受沉积相、裂缝作用和岩溶作用的控制。沉积微相影响溶蚀程度,研究区发育局限台地相和开阔台地相,其中,台内滩微相和云质瀉湖微相基质孔隙发育,有利于溶蚀作用发生;构造作用形成的断裂、裂缝系统改善储集空间,是岩溶的先期通道,多期岩溶作用是储层形成的关键,通过岩芯和成像测井对科2井岩溶结构进行识别,表生岩溶影响深度达不整合面以下180 m。受岩溶旋回控制,发育有4个垂直渗流—水平潜流带,水平潜流带物性最好,为优质储层发育带。     

安次地区奥陶系潜山裂缝特征及油气地质意义

针对安次地区奥陶系潜山储层非均质性强、井间生产差异性大等问题,利用岩芯、薄片及测录井等资料,对研究区内裂缝类型、发育程度及有效性进行分析,认为工区内发育构造缝、溶蚀缝和成岩缝3类,其中,构造缝最为发育,以NE走向的高角度缝为主;岩性和断层控制裂缝的发育程度,厚度薄、岩性纯、靠近断层发育的白云岩储层裂缝最为发育;张开度和充填程度反映裂缝有效性,研究区裂缝发育,多数裂缝半填充—未填充,裂缝有效性好。多口井钻探证实,裂缝具有重要的油气地质意义,它不仅可以改善储层物性条件,还提供油气运移优势通道,提高单井产能,同时,裂缝的形成时期和发育部位控制油气运聚成藏:新近纪以后形成的裂缝发育程度高、有效性好;油气藏内部的裂缝发育,有利于油气运聚,形成富油气聚集区。     

基于综合物探的济阳坳陷潜山型干热岩靶区优选

济阳坳陷蕴藏着丰富的地热资源,开展深层干热岩的系统评价对于坳陷地热资源综合利用具有重要意义。本文利用收集的1∶20万重力数据38870 km²、1∶5万航磁数据26630 km²和胜利油田以往实施的钻井、地震勘探资料,采用Parker-Oldenburg反演迭代算法、重力-地震联合剥层方法、重磁正反演等方法,开展莫霍面、居里面、壳断裂-岩石圈断裂、基底构造和基底岩性等地热地球物理研究。通过实施大地电磁测深剖面116 km,验证了壳幔过渡带熔融体发育特征。从居里面深度、莫霍面深度、地温梯度、热储层岩性、盖层厚度、潜山规模6个方面评价优选了5处干热岩靶区。济阳坳陷具“壳幔生热、构造控热、潜山储热、盖层保温”四位一体地热成因特征,是以“传导型干热-水热共存、对流型水热补充”为主要特征的盆地复合型地热系统,潜山型干热岩靶区具有进一步勘探和开发的前景。     

渤东低凸起南段油气横向输导能力的定量评价

渤东低凸起南段油气横向输导路径和输导能力的不确定性影响成藏模式的建立及新近系的勘探。综合利用钻井、测井资料,通过地震属性提取、岩芯观察等方法,对研究区油气输导条件进行分析,研究认为馆陶组骨架砂体横向输导受限于深入烃源岩且长期活动断层的发育程度以及自身含砂量,而火山岩潜山顶部不整合面的输导层-盖层配置关系好,半风化岩石原生与次生孔、缝发育,且潜山以缓坡倾末端的形式延伸至深凹区,是主要的油气横向输导路径。在建立研究区成藏模式基础上,得出油气横向输导能力与潜山输导脊与烃源岩的接触长度、输导脊的倾角、输导脊之上的圈闭面积有关,并建立半风化岩石输导系数定量表征油气横向输导能力,指导新近系实际勘探。     

河北丰宁县老米沟门金矿地质特征及控矿因素

老米沟门金矿区位于河北省北部丰宁-隆化金成矿带上,主要赋矿层位为太古宇红旗营子组变质岩系。通过研究控矿因素及矿床成因,确定矿区金矿的形成受太古宇红旗营子组地层、东西向、北北西-北西向的次级张性构造和燕山期岩浆活动共同控制,矿床的成因类型应属中-低温热液充填型金矿床。通过对老米沟门金矿矿床地质特征及成矿地质条件的分析研究,总结矿床成因和主要控矿因素,上述研究对矿区外围及深部找矿及丰宁—隆化金成矿带的地质找矿具有一定的参考意义。     

内蒙古蒙古营子金钼矿床地质特征及找矿方向探讨

蒙古营子金钼矿是近两年新发现的矿床,矿化类型为斑岩型钼矿、石英脉型金多金属矿及蚀变岩型金矿,钼矿化发育于燕山期杂岩体中,金矿化主要分布于杂岩体接触带附近及外围的太古宇变质岩中,矿区成矿与燕山多期次岩浆岩演化活动密切相关,不同的矿化类型是成矿系列的产物.通过讨论分析认为矿区具较大找矿远景,并提出了今后找矿方向.     

四川中坝气田雷口坡组成藏条件及油气主控因素

通过对四川盆地西北部中坝气田中三叠统雷口坡组气藏已发现油气与有利沉积相带、局部构造、等关系的分析,结合试采试油资料与储层厚度、物性与录井显示关系的统计分析,总结认为油气成藏发育了多套烃源岩,具有良好的储集条件和保存条件。通过对各个构造运动阶段雷口坡气藏被改造与再形成的分析,提出油气主控因素是后期构造运动的影响,主要经历了印支期、燕山期和喜山期构造运动的改造形成的古圈闭,油气藏受到破坏然后再形成的整个过程。该主识对中坝气田未来的勘探开发具有指导意义。     

湘中包金山—金坑冲金矿床构造控岩控矿分析

湘中包金山—金坑中金矿床位于白马山—龙山—紫云山隆起带东段,紫云山岩体与歇马岩体所夹持的中元古界板溪群浅变质岩中。紫云山隆起西缘志留系—下泥盆统地层缺失,同时南部加里东岩浆活动响应,印支—燕山岩浆热活动继承和叠加改造,形成以紫云山杂岩体和板溪群变质岩为核心的变质核杂岩。包金山—金坑冲金矿床为一构造蚀变岩型金矿,主要受板溪群马底驿组含钙质板岩中发育的近东西向似层状构造蚀变岩带控制,该构造蚀变岩带具多期活动特征,初期受近南北向挤压形成逆断层,后期受伸展作用形成拆离断层。文章依据最新勘探成果,重点分析了矿区构造控岩控矿特征,证实了矿床受岩浆热隆起及其与之相关的构造断裂体系和蚀变岩带控制,解析出Au、Au-W、Au-Sb 3个期次的成矿序列,探讨了地层—构造联合控矿规律与叠加成矿作用。     

浅析高速公路工程招投标中的最低评标价法

结合目前高速公路施工项目招投标活动的实际情况,阐述了最低评标价法的概念,归纳了其优点及存在问题,对完善最低评标价法提出几点策略,以期促进招标投标市场更加规范有序。     

Place-Making in Megaprojects in Melbourne

This article analyses state-led place-making practices in Melbourne. The two levels of government that influence planning in Melbourne make much of the city as ‘culturally vibrant’ and ‘creative’, and have incorporated creative city-inspired place-making principles into many layers of the planning system. An examination of the development of two mixed-use megaprojects in central Melbourne reveals however that ideals of culturally engaging public places, and indeed of creative landscapes for middle-class consumption, wither in the face of more basic imperatives for economic development. In these case studies the ‘creative city’, no matter how the idea is interpreted, has little traction either as a set of inclusive place-making principles or as a gentrification strategy. The article concludes that the creative city-inspired place-making objectives in the planning system at both state and local levels are ambiguous in their overall intents and completely unsupported by statutory controls. Such place-making objectives as are realised are the compromised results of the interplay of uncoordinated decisions, delivered at the pleasure of the developer.     

Pathogens in septage in Vietnam

Septage is widely acknowledged as a major source of infectious pathogens while disposal of septage, and the operation and maintenance of septic tanks, is not regulated in many developing countries. Twenty untreated septage and septage sludge samples were taken from Can Tho City, Vietnam to examine their pathogen content, and indicator micro-organisms. Escherichia coli and Enterococcus spp. were detected in all samples, regardless of sludge storage time. Phages were detected in 80% of samples. Salmonella spp. were detected in 70% of the untreated septage and 60% of septage sludge samples. Concentrations of phages and bacteria tested in septage sludge after many years of tank storage were much higher than the expected levels. Helminth ova were present in 95% of untreated septage samples with an average of 450 ova l^− 1, and were detected in all septage sludge samples with an average of 16,000 ova l^− 1. Twelve varieties of helminth ova were identified. More helminth ova varieties in higher concentrations were found in septage than those reported from stool samples. The varieties' frequency ranged from 10% to 50% and Ascaris lumbricoides predominated. Results show that pathogens and indicator micro-organisms, especially helminth ova, accumulate in sludge. Thus helminth ova should be considered when septage sludge is treated and used for agriculture. Proper health protection measures must be applied for people handling septage.     

新时期广东城市化的新特点

新时期广东城市化出现以下特点:知识源导向、城市由单体向群体化发展、产业集群推动、政府主导自上而下的集约化发展、城镇化向城市化转变、由重“数量”发展向重“质量”发展的转变。     

谈城市历史保护规划的误区

由于缺乏起码的历史文化知识,忽视历史文化遗产的保护,错误的决策导致了建设性的破坏,要加强城市保护的教育,培养合格人才。     

浅谈我国工程项目建设成本控制存在的问题

结合目前我国施工企业工程项目成本管理现状,对工程项目成本管理过程中存在的问题进行了较详细的分析,并提出了一些解决问题的办法,以做好项目成本控制工作,进而增强企业经济实力。     

浅谈建筑施工临时用电安全

针对由于建筑施工临时用电安全管理的不完善和不规范操作而导致大量工伤事故频频发生的问题,为消除用电安全隐患,对建筑施工临时用电安全管理进行了归纳和分析,并提出了整改意见,以确保现场人员及电气设备的安全运行。     

Perchlorate exposure in lactating women in an urban community in New Jersey

Perchlorate is most widely known as a solid oxidant for missile and rocket propulsion systems although it is also present as a trace contaminant in some fertilizers. It has been detected in drinking water, fruits, and vegetables throughout New Jersey and most of the United States. At sufficiently high doses, perchlorate interferes with the uptake of iodine into the thyroid and may interfere with the development of the skeletal system and the central nervous system of infants. Therefore, it is important to quantify perchlorate in breast milk to understand potential perchlorate exposure in infants. In this study we measured perchlorate in breast milk, urine, and drinking water collected from 106 lactating mothers from Central New Jersey. Each subject was asked to provide three sets of samples over a 3-month period. The average ± SD perchlorate level in drinking water, breast milk, and urine was 0.168 ± 0.132 ng/mL (n = 253), 6.80 ± 8.76 ng/mL (n = 276), and 3.19 ± 3.64 ng/mL (3.51 ± 6.79 μg/g creatinine) (n = 273), respectively. Urinary perchlorate levels were lower than reference range values for women of reproductive age (5.16 ± 11.33 μg/g creatinine, p = 0.03), likely because of perchlorate secretion in breast milk. Drinking water perchlorate levels were ≤ 1.05 ng/mL and were not positively correlated with either breast milk or urine perchlorate levels. These findings together suggest that drinking water was not the most important perchlorate exposure source for these women. Creatinine-adjusted urine perchlorate levels were strongly correlated with breast milk perchlorate levels (r = 0.626, p = < 0.0005). Breast milk perchlorate levels in this study are consistent with widespread perchlorate exposure in lactating women and thus infants. This suggests that breast milk may be a source of exposure to perchlorate in infants.     

安康市工程施工企业未来几年人才需求调查

为了不断提高工程类专业的办学质量,对安康市区主要施工企业或项目经理部未来几年人才需求状况进行了调查,同时提出相关建议,以期培养更多的该类专业人才,满足施工企业需求。