三角洲外前缘薄层特低渗储层构型特征——以大情字井油田黑60区块青山口组为例     

陈薪凯  刘景彦  林晓海  付平  陈程  田青 《东北石油大学学报》2019,43(3)

  相似文献   

莱州湾海蜇消失的原因分析     

纪灵 《海洋通报》1994,13(1):94-96

  相似文献   

Silicon limitation on primary production and its destiny in Jiaozhou Bay, China——Ⅳ：Study on cross-bay transect from estuary to ocean   总被引：1，自引：0，他引：1  

Yang Dongfang  Chen Yu  Gao Zhenhui  Zhang Jing  Wang Fan 《中国海洋湖沼学报》2005,23(1):72-90

The authors analyzed the data collected in the Ecological Station Jiaozhou Bay from May 1991 to November 1994, including 12 seasonal investigations, to determine the characteristics, dynamic cycles and variation trends of the silicate in the bay. The results indicated that the rivers around Jiaozhou Bay provided abundant supply of silicate to the bay. The silicate concentration there depended on river flow variation. The horizontal variation of silicate concentration on the transect showed that the silicate concentration decreased with distance from shorelines. The vertical variation of it showed that silicate sank and deposited on the sea bottom by phytoplankton uptake and death, and zooplankton excretion. In this way, silicon would endlessly be transferred from terrestrial sources to the sea bottom. The silicon took up by phytoplankton and by other biogeochemical processes led to insufficient silicon supply for phytoplankton growth. In this paper, a 2D dynamic model of river flow versus silicate concentration was established by which silicate concentrations of 0.028–0.062 μmol/L in seawater was yielded by inputting certain seasonal unit river flows (m³/s), or in other words, the silicate supply rate; and when the unit river flow was set to zero, meaning no river input, the silicate concentrations were between 0.05–0.69 μmol/L in the bay. In terms of the silicate supply rate, Jiaozhou Bay was divided into three parts. The division shows a given river flow could generate several different silicon levels in corresponding regions, so as to the silicon-limitation levels to the phytoplankton in these regions. Another dynamic model of river flow versus primary production was set up by which the phytoplankton primary production of 5.21–15.55 (mgC/m²·d)/(m³/s) were obtained in our case at unit river flow values via silicate concentration or primary production conversion rate. Similarly, the values of primary production of 121.98–195.33 (mgC/m²·d) were achieved at zero unit river flow condition. A primary production conversion rate reflects the sensitivity to silicon depletion so as to different phytoplankton primary production and silicon requirements by different phytoplankton assemblages in different marine areas. In addition, the authors differentiated two equations (Eqs. 1 and 2) in the models to obtain the river flow variation that determines the silicate concentration variation, and in turn, the variation of primary production. These results proved further that nutrient silicon is a limiting factor for phytoplankton growth. This study was funded by NSFC (No. 40036010), and the Director's Fund of the Beihai Sea Monitoring Center, the State Oceanic Administration.  相似文献   

用泰国湾北大年盆地沙敦油田的岩心资料和岩石图象分析来确定控制渗…     

Bowe.  MC 蔡群昌 《海洋地质译丛》1994,(5):54-62

  相似文献   

Biogenic silicate accumulation in sediments, Jiaozhou Bay   总被引：1，自引：0，他引：1  

李学刚宋金明  戴纪翠袁华茂李宁  李凤业孙松 《中国海洋湖沼学报》2006,24(3):270-277

1 INTRODUCTION Silicate, or silicic acid (H4SiO4), is a very im- portant nutrient in the ocean. Unlike other major nu- trients such as phosphate and nitrate or ammonium, which are needed by almost all marine plankton, silicate is an essential chemical req…  相似文献   

大庆徐深28井气体钻井实践     

王昌利  刘永贵  杨淑静 《探矿工程》2008,35(8):24-26

大庆油田徐家围子地区深层采用常规钻井机械钻速较低,试验气体钻井技术表明,能够大幅度提高深层钻井机械钻速,缩短钻井周期。通过前期的地质分析,在总结大庆油田已经试验的2口气体钻井现场试验的经验和教训的基础上,确定在徐深28井三开登娄库设计采用空气钻井技术,进入营城组试验氮气钻井技术,这是大庆油田第一口采用空气和氮气钻井的气体钻井。经过周全的设计,克服了冬季气温低、地层出水、气液转化井壁稳定等难题,保证了井身质量,机械钻速与邻井常规钻井相比提高了7倍,缩短钻井周期26天,节约钻头7只,尝试了氮气钻进营城组,取得  相似文献   

河南桐柏老湾花岗岩体锆石SHRIMP U-Pb年龄及其地质意义   总被引：5，自引：0，他引：5  

刘翼飞  江思宏  方东会  刘妍 《岩石矿物学杂志》2008,27(6):519-523

通过对河南桐柏老湾花岗岩体开展锆石SHRIMP U-Pb测年,获得了一个高精度的U-Pb年龄(132.5±2.4)Ma,比较可靠地限定了老湾花岗岩体的形成时代属于燕山中期,而不是前人所认为的燕山晚期.结合区域构造-岩浆活动时间,认为在燕山中期,桐柏及其邻区存在次比较重要的构造-岩浆事件,老湾花岗岩体是这次构造-岩浆活动事件的产物.  相似文献   

温度对不同大小墨西哥湾扇贝生长的影响   总被引：2，自引：0，他引：2  

刘志刚  王辉  栗志民  郑云龙 《热带海洋学报》2007,26(5):47-52

在8—32℃实验室控温范围内以2℃为梯度,以壳高及体重增长作为观察指标,研究3个规格墨西哥湾扇贝Argopecten irradians concentricus的适宜、较适宜及最适宜生长温度。研究结果表明,小苗(壳高6.2mm,体重48.3mg)、中苗(壳高18.1mm,体重1191.1mg)、大苗(壳高30.7mm,体重5809.9mg)在8—32℃水温下均能生长,但在水温8及32℃,3种规格增长率均较低;适宜生长温度分别为小苗11.2—31.1℃、中苗9.8—31.8℃、大苗9.8—32.4℃;较适宜生长温度分别为小苗18.1—29.4℃、中苗18.5—29.4℃、大苗16.9—30.4℃;3种苗随规格增大,适温范围扩大(p<0.01);最适生长温度3种苗均为24—28.0℃,其范围向高温端漂移;在水温为8℃时,3种苗存活率均达到97.0%以上,水温在32℃时则小苗为47.0%、中苗为67.5%、大苗为76.0%,表现出3种苗对低温有更强的忍耐力,大苗对高温有更强的适应性。  相似文献   

四十里湾几种双壳贝类及污损动物的氮、磷排泄及其生态效应   总被引：16，自引：1，他引：16  

周毅  杨红生  何义朝  张福绥 《海洋与湖沼》2002,33(4):424-431

对多种经济双壳贝类和养殖中的污损动物的N和P排泄进行了测定 ,包括排泄成分和排泄速率。在这些动物的N排泄中 ,NH4 N占主要部分 ,如笼式养殖的双壳贝类NH4 N占总N排泄的平均值范围为 70 8%— 80 1 % ;氨基酸是第二大排泄成分 ,平均占总N排泄的 1 0 %—2 5 %。其他形态的N ,如尿素、亚硝酸盐和硝酸盐也有检出。在P排泄中 ,有机磷 (DOP)约占总溶解磷 (TDP)排泄的 1 5 %— 2 7%。据估算 ,整个四十里湾所养殖的双壳贝类在夏季每天将排泄4 5 4t总溶解氮 ,其中NH4 N 3 36t、Amino N 0 69t、Urea N 0 2t。同时每天磷的排泄为 0 5 7tTDP ,其中DOP 0 1 5t。对面积为 1 3× 1 0 4 hm2 的海区而言 ,贝类的N、P排泄分别能满足浮游植物生产所需N、P的 44%和 40 %。高密度的贝类养殖对养殖生态系统营养循环的影响是很显著的。附着动物 (柄海鞘等 )的N、P排泄及其对营养循环的影响也不容忽视。  相似文献   

厦门湾沉积物中有害有毒甲藻休眠孢囊及塔玛亚历山大藻的潜在危害   总被引：7，自引：0，他引：7  

蓝东兆  方琦  顾海峰  李超 《台湾海峡》2004,23(4):453-457,i005

本工作通过分析厦门湾表层沉积物中的甲藻休眠孢囊，发现了1种有毒塔玛亚历山大藻(Alexandrium tamarense)休眠孢囊，及两种有害甲藻休眠孢囊：锥状斯氏藻(Scrippsiella trochoidea)、具刺膝沟藻(Gonyaulax spinifera)．对塔玛亚历山大藻进行了培养。并初步研究了该藻的毒性及贝类对其毒素的积累．研究结果表明，厦门海域沉积物中的塔玛亚历山犬藻是有毒的．它的较适宜生长环境条件是：水温20～25℃．盐度为25～30，光照度为3000～50001x．塔玛亚历山大藻在每年的4月26日至6月10日、10月11日至11月20日可能会形成有害藻华，危害厦门海域的海洋生物并可能威胁到人类的健康和生命安全．  相似文献