油气资源评价与勘探思路中的模糊思维     

陈琳琳  须雪豪 《上海国土资源》2008,8(1):57-59,70

根据资源评价和勘探思路中的不确定因素,对资源评价成果与勘探思路形成中所包含的模糊特性,从自然科学与社会科学的交叉、综合点,模糊思维对资源评价研究与勘探决策的影响,进行了探讨,以期在资源评价成果的认识和勘探决策过程中给予充分考虑。  相似文献   

新生代构造与羌塘盆地油气保存   总被引：2，自引：0，他引：2       下载免费PDF全文

南征兵  李永铁 《沉积与特提斯地质》2008,28(1):70-75

羌塘盆地为我国陆上油气资源潜力巨大的一个中生代海相残留盆地,地处青藏高原腹地,但高原的强烈隆升、新构造运动的频繁作用和中上侏罗统的大片裸露,以侏罗系为目的层的油气,能否保存至今令人怀疑。羌塘盆地油气保存条件的问题已成为石油地质条件评价中一个十分突出的焦点问题。笔者就已有的资料,通过对新生代构造活动、断裂活动影响和高原隆升等方面的初步分析,对羌塘盆地油气的保存条件进行初步的探讨。  相似文献   

Multiscale finite-volume formulation for multiphase flow in porous media: black oil formulation of compressible,three-phase flow with gravity     

S. H. Lee  C. Wolfsteiner  H. A. Tchelepi 《Computational Geosciences》2008,12(3):351-366

Most practical reservoir simulation studies are performed using the so-called black oil model, in which the phase behavior is represented using solubilities and formation volume factors. We extend the multiscale finite-volume (MSFV) method to deal with nonlinear immiscible three-phase compressible flow in the presence of gravity and capillary forces (i.e., black oil model). Consistent with the MSFV framework, flow and transport are treated separately and differently using a sequential implicit algorithm. A multiscale operator splitting strategy is used to solve the overall mass balance (i.e., the pressure equation). The black-oil pressure equation, which is nonlinear and parabolic, is decomposed into three parts. The first is a homo geneous elliptic equation, for which the original MSFV method is used to compute the dual basis functions and the coarse-scale transmissibilities. The second equation accounts for gravity and capillary effects; the third equation accounts for mass accumulation and sources/ sinks (wells). With the basis functions of the elliptic part, the coarse-scale operator can be assembled. The gravity/capillary pressure part is made up of an elliptic part and a correction term, which is computed using solutions of gravity-driven local problems. A particular solution represents accumulation and wells. The reconstructed fine-scale pressure is used to compute the fine-scale phase fluxes, which are then used to solve the nonlinear saturation equations. For this purpose, a Schwarz iterative scheme is used on the primal coarse grid. The framework is demonstrated using challenging black-oil examples of nonlinear compressible multiphase flow in strongly heterogeneous formations.  相似文献   

贵州赤水地区油气成藏特征及勘探潜力分析   总被引：1，自引：0，他引：1  

李兴平  孟宪武  刘特明 《贵州地质》2008,25(4)

赤水地区具有较大的勘探资源潜力,总资源量3400×108m3,圈闭资源量2157.34×108m3,探明储量仅占圈闭资源量的2.1%;赋存海相、陆相两大油气系统及原生型、次生型、残存型、复合型等多种子油气系统;储集层非均质性极强,气藏富集规模及分布受沉积微相、溶蚀作用、成岩作用和构造圈闭因素的影响外,更主要是裂缝系统对油气富集成藏及油气藏规模、展布起主导作用;茅口组是赤水地区油气勘探的主体气藏,提出"以加强裂缝性储层预测为重点,以致力寻找孔缝洞大型储渗系统为核心,以钻探官渡构造带茅口组缝洞系统获规模气藏为突破口,解决赤水气田产能瓶颈问题,实现官渡构造海相领域油气勘探的突破和赤水气田新的储量接替"都具有积极的、现实的重大意义。  相似文献   

辽河油田沈95块储层伤害研究     

张云鹏  卢宗盛  王玉娟  李益龙  张保民 《岩石矿物学杂志》2008,27(3):199-204

针对辽河油田沈95块油藏储层渗透率低、原油凝固点高的特点,对该区储层的岩矿特征、孔隙结构及流体物性、敏感性、水驱特征等进行了实验分析和开发实验技术研究.认为目前造成储层伤害的主要因素有:原油中石蜡析出造成油井井底附近地层渗透性下降;注入水水质差引起注水井近井地带的储层伤害;颗粒运移主要造成地层深部伤害及细菌堵塞、地层敏感性伤害等.并在大量实验的基础上结合前人研究成果,提出了相应的改善方案和建议.  相似文献   

Spatial operations in a GIS-based karst feature database     

Yongli Gao 《Environmental Geology》2008,54(5):1017-1027

This paper presents the spatial implementation of the karst feature database (KFD) of Minnesota in a GIS environment. ESRI’s ArcInfo and ArcView GIS packages were used to analyze and manipulate the spatial operations of the KFD of Minnesota. Spatial operations were classified into three data manipulation categories: single layer operation, multiple layer operation, and other spatial transformation in the KFD. Most of the spatial operations discussed in this paper can be conducted using ArcInfo, ArcView, and ArcGIS. A set of strategies and rules were proposed and used to build the spatial operational module in the KFD to make the spatial operations more efficient and topographically correct.  相似文献   

Compositional and geochemical characteristics of light hydrocarbons for typical marine oils and typical coal-generated oils in China     

Xiang Wang  Min Zhang 《中国地球化学学报》2008,27(4):407-411

Different types of crude oils have different light hydrocarbon compositional and geochemical characteristics. Based on the light hydrocarbon data from two kinds of oils, i.e., coal-generated oils and marine oils in China, light hydrocarbons in marine oils in the Tazhong area are generally relatively enriched in n-heptane, and coal-generated oils from the Turpan Basin are enriched in methylcyclohexane. The K1 values, reported by Mango （1987）, range from 0.97 to 1.19 in marine oils, basically consistent with what was reported by Mango on light hydrocarbons in terms of the majority of the crude oil data. But the K1 values of coal-generated oils are particularly high （1.35-1.66） and far greater than those of marine oils; heptane values in marine oils, ranging from 32.3% to 45.4%, and isoheptane values, ranging from 1.9 to 3.7, are respectively higher than those of coal-generated oils, indicating that the oils are in the high-maturity stage. In addition, expulsion temperatures of coal-generated oils from the Turpan Basin are obviously lower than those of marine oils from the Tazhong area.  相似文献   

基于ArcGIS Engine的小型地籍信息管理系统的开发     

黄秋雨  王崇倡 《测绘与空间地理信息》2017,(4)

在地籍信息的管理建设中,将地籍数据的属性数据与矢量数据一体化,建立小型的地籍信息管理系统,可以降低管理成本,为地籍信息管理工作提供便捷的管理手段和有效的决策。本文对地籍信息管理系统的现状进行了研究,总结了系统的总体框架,并且阐述了所涉及的关键技术,选用.NET架构搭建平台,利用C/S模式实现了小型地籍信息管理系统的开发。根据系统的需求与数据的特征,以ArcGIS Engine、VS2010、C#为开发工具,在ArcCatalog中建立文件地理数据库,实现了查询、统计、数据的编辑更新、空间分析、专题图制作、统计与输出等功能。通过实验数据验证,本系统操作简便,可满足对地籍数据管理的需要。  相似文献   

Community Recovery Following the Deepwater Horizon Oil Spill: Toward a Theory of Cultural Resilience     

Hannah E. Clarke 《社会与自然资源》2017,30(2):129-144

Culture plays an important role in communities’ abilities to adapt to environmental change and crises. The emerging field of resilience thinking has made several efforts to better integrate social and cultural factors into the systems-level approach to understanding social–ecological resilience. However, attempts to integrate culture into structural models often fail to account for the agentic processes that influence recovery at the individual and community levels, overshadowing the potential for agency and variation in community response. Using empirical data on the 2010 BP oil spill’s impact on a small, natural-resource-dependent community, we propose an alternative approach emphasizing culture’s ability to operate as a resource that contributes to social, or community, resilience. We refer to this more explicit articulation of culture’s role in resilience as cultural resilience. Our findings reveal that not all cultural resources that define resilience in reference to certain disasters provided successful mitigation, adaptation, or recovery from the BP spill.  相似文献   

广西气象台城市空气质量预报业务系统     

郑永骏  董惠青  覃天信 《气象研究与应用》2001,22(4):37-39

介绍广西气象台城市空气质量预报业务系统的流程规范、设计思想、技术路线和功能模块  相似文献