西部凹陷南部沙三段储层沉积特征及含油气性分析   总被引：12，自引：9，他引：12  

鞠俊成  张凤莲  喻国凡  于天才 《古地理学报》2001,3(1):63-70

西部凹陷南部为辽河油田的重点探区之一，具有十分优越的石油地质条件。本区在沙三期断陷活动强烈，发育了巨厚的深水泥岩和多期次缓坡型湖底扇沉积，为油气聚集成藏提供了丰富的油气源条件和储集条件。沙三段沉积时期，在西部凹陷南部发育有齐家-杜家台和锦州-欢喜岭两大湖底扇沉积体系。受物源区的距离、基底构造和主干断层活动的控制，湖底扇平面上具有分带性，可划分为内扇、中扇和外扇三个亚相带。齐杜和锦欢湖底扇在沙三早期规模较小，中期规模最大，晚期萎缩。本区沙三段储层物性普遍较差，以低孔-低渗、特低孔-特低渗储层为主，其中湖底扇中扇辫状沟道微相砂体储集性能最好，平面上依中扇辫状沟道→中扇前缘→外扇亚相储层物性由好变差。储集性能的优劣主要受母岩区岩性、沉积作用、成岩作用等多种因素控制。沙三段湖底扇砂体在区内分布广泛，处于成熟生油岩的包围之中，位于油气运移的有利指向上，成藏条件优越，勘探前景广阔。  相似文献   

秦岭造山带的壳幔结构及其形成,演化特征   总被引：3，自引：0，他引：3  

周国藩  杨森楠 《地质科技情报》1992,11(3):19-24

地处华北地块和扬子地块之间的秦岭造山带是一个壳幔结构十分复杂的地带,它的形成、演化也有其漫长而复杂的过程。本文依据近年来在该地带及邻区取得的地球物理资料所显示的多种信息来推断其壳幔结构及其形成、演化的某些特征,并尝试利用反映不同深度范围物质密度分布不均信息的卫星重力资料,探讨其地球动力学等背景。  相似文献   

江汉—洞庭盆地岩石圈构造特征及地壳稳定性浅析     

周国藩  叶俊林 《湖南地质》1995,14(1):22-26

利用地球物理场的各种成果资料，与地质、地震资料相结合，对江汉－洞庭盆地的地壳及岩石圈中下层构造特征进行分析，得到了一些有意义的结果，例如，根据ＷＤＭ－８９地球重力场模型位系数所计算的高阶窗卫星重力异常，不仅能较好地反映研究区岩石圈的构造特征，且与该地区中强地震的分布有一定的对应关系。  相似文献   

Larval and juvenile growth performance of Manila clam hybrids of two full-sib families     

Huo  Zhongming  Yan  Xiwu  Zhao  Liqiang  Liang  Jian  Yang  Feng  Zhang  Guofan 《中国海洋大学学报(英文版)》2015,14(3):564-568

In order to determine whether growth performance could be improved by hybridizing full-sib families of Manila clam(Ruditapes philippinarum), crosses between two full-sib families including self and reciprocal crosses were carried out. The effects of heterosis, combining ability and interaction on the growth of shell length were estimated. The results showed that the growth of hybrid larvae was intermediate between parents on days 6 and 9. Heterosis on shell length was observed, which varied at juvenile stage. The cross of ♂A×♀B(Hp varied between 10.41% and 68.27%) displayed larger heterosis than ♂B×♀A(Hp varied between 1.89% and 32.33%) did, suggesting that ♂A×♀B was an ideal hatchery method of improving the growth performance of Manila clam. The variances of general combining ability(GCA), special combining ability(SCA) and interaction(I) were significant in shell length(P 0.05), indicating that both additive and non-additive genetic factors were important contributors to the growth of larvae and juveniles. The GCA for shell length of ♂A×♀B was higher than that of ♂B×♀A at both larval and juvenile stages. This confirmed that the cross between ♂A and ♀B showed great growth in shell length. In summary, the growth of Manila clam seeds could be improved by hybridizing selected parents from large numbers of full-sib families.  相似文献   

Asymptotic Analysis Methods for Structural Reliability   总被引：2，自引：0，他引：2  

Zhao Guofan  Li Yungui Wang Hengdong Professor  Dept. of Civil Engineering  Dalian University of Technology  Dalian Ph. Doctor  China Academy of Building Research  Beijing Ph. Doctor  Dept. of Civil Engineering  Dalian University of Technology  Dalian 《中国海洋工程》1995,(3)

- Applying Laplace asymptotic approximation of integral, asymptotic analysis methods of structural reliability are proposed in generalized and orthogonal random space. Analytic results show that the proposed methods are simple in calculation and accurate enough for problems of continuous random variables.  相似文献   

Strength of Lightweight Concrete Under Triaxial Compression     

Song Yupu  Zhao Guofan  Peng Fang  Shen Jina Doctor  Professor  Dalian University of Technology  Dalian . Professor  Dalian University of Technology  Dalian Doctor  Dalian University of Technology  Dalian Engineer  Dalian University of Technology  Dalian 《中国海洋工程》1996,(2)

The strength of lightweight concrete under triaxial compressive stress is studied experimentally with the concrete triaxial apparatus designed by the authors, and is compared with that of normal concrete under the same stress state. Ninety-five 100 mm cubes under twenty stress ratios are tested. As compared with normal concrete, it is found that not only the multiaxial compressive strength of lightweight concrete is small, but also the ratio of the multiaxial compressive strength to the uniaxial compressive strength is small. The influence of the intermediate principal stress on the multiaxial strength of lightweight concrete is discussed. The strength criteria which are expressed in the principal stresses and the octahedral stresses respectively are proposed.  相似文献   

Inheritance of 15 microsatellites in the Pacific oyster Crassostrea gigas： segregation and null allele identification for linkage analysis   总被引：2，自引：0，他引：2  

李莉  郭希明  张国范 《中国海洋湖沼学报》2009,27(1)

Microsatellites were screened in a backcross family of the Pacific oyster, Crassostrea gigas. Fifteen microsatellite loci were distinguishable and polymorphic with 6 types of allele-combinations. Null alleles were detected in 46.7% of loci, accounting for 11.7% of the total alleles. Four loci did not segregate in Mendelian Ratios. Three linkage groups were identified among 7 of the 15 segregating loci. Fluorescence-based automated capillary electrophoresis (ABI 310 Genetic Analyzer) that used to detect the microsatellite loci, has been proved a fast, precise, and reliable method in microsatellite genotyping.  相似文献   

Inheritance of 15 microsatellites in the Pacific oyster <Emphasis Type="Italic">Crassostrea gigas</Emphasis>: segregation and null allele identification for linkage analysis     

李莉  郭希明  张国范 《中国海洋湖沼学报》2009,27(1):74-79

Microsatellites were screened in a backcross family of the Pacific oyster, Crassostrea gigas. Fifteen microsatellite loci were distinguishable and polymorphic with 6 types of allele-combinations. Null alleles were detected in 46.7% of loci, accounting for 11.7% of the total alleles. Four loci did not segregate in Mendelian Ratios. Three linkage groups were identified among 7 of the 15 segregating loci. Fluorescence-based automated capillary electrophoresis (ABI 310 Genetic Analyzer) that used to detect the microsatellite loci, has been proved a fast, precise, and reliable method in microsatellite genotyping. Supported by the National Natural Science Foundation of China (NO.40730845, 39825121)  相似文献   

Experimental evaluation of heterobeltiosis and heterosis between two populations of Pacific abalone Haliotis discus hannai Ino     

DENG Yuewen  LIU Xiao  WU Fucun  ZHANG Guofan 《海洋学报(英文版)》2008,27(4):112-119

A2 × 2 factorial cross between two populations of Pacific abalone Haliotis discus hannai Ino, collected separately from Dalian （D） in China and Miyagi （M） in Japan, was conducted to compare performances in fertilization rate, hatching rate, metamorphosis rate and growth at days 20, 43, 160 and 330 between purebreds （DD and MM） and crossbreds （DM and MD） and investigate the magnitude of heterobeltiosis （better parent） and heterosis （mid-parent）. Heterobeltiosis and heterosis for all the traits analyzed were evidently different between crossbreds DM and MD. Heterobeltiosis in the crossbred DM varied among traits, with values of 2.5% for the fertilization rate, 2.2% for the hatching rate, - 1.9% for the metamorphosis rate and 7.4% for the growth at the day 330. The crossbred DM displayed positive heterotic values for fertilization rate （5.4%）, hatching rate （7.4%）, metamorphosis rate （7.6%） and growth （ 12.0% ） at the day 330. However, both heterobeltiosis and heterosis for all the traits in the crossbred MD were negative except those for the growth at days 20 and 43. The results indicate the importance of selecting superior hybrid varieties if the exploitation of hybrid vigor is considered in the Pacific abalone breeding program.  相似文献   

Involvement of clustered oyster Wnt genes in gut formation     

Liu  Jun  Xu  Fei  Ji  Peng  Li  Li  Zhang  Guofan 《中国海洋湖沼学报》2018,36(5):1746-1752

Journal of Oceanology and Limnology - Genes encoding Wnt ligands play important roles in organ development. The Wnt10 - Wnt6 - Wnt1 - Wnt9 cluster widely presents in many metazoan genomes,...  相似文献