聚合物驱油技术研究

近年来国内外聚合物驱油技术研究得到长足发展,对聚合物的驱油机理,地质条件及聚合物的驱油方案的研究应用都有详细的介绍,文章重点对聚合物的驱油地质条件及机理进行了探讨,进而提出适合我国驱油的聚合物技术方案。     

聚合物驱油技术研究

近年来国内外聚合物驱油技术研究得到长足发展，对聚合物的驱油机理，地质条件及聚合物的驱油方案的研究应用都有详细的介绍，文章重点对聚合物的驱油地质条件及机理进行了探讨，进而提出适合我国驱油的聚合物技术方案。     

自生CO2泡沫驱油室内研究

通过大量的室内实验,筛选出可适用于中低温的稠油油藏的自生CO2泡沫驱油体系.在油藏温度下,筛选出自生CO2泡沫驱油体系,研究温度对自生CO2泡沫体系的泡沫性质的影响,同时对自生CO2泡沫驱油体系的界面张力和粘度稳定性进行评价.实验结果表明,黄原胶做稳泡剂时,能保持粘度的长期稳定稳定性;自生CO2泡沫体系比单一聚合物能提高的采收率6.2-8.4个百分点.     

聚合物驱开发指标预测及方法评价

鉴于水驱驱替特征曲线理论对聚合物驱已不完全适用，研究评价了聚合物驱条件下对累积产油量、阶段采收率、含水率等指标进行预测，提出了驱替特征曲线法、累积液累积水法、流管法、水驱递减法、归一化法。     

注水倍数与驱油效率的理论关系研究

注水倍数和驱油效率是反映注水油田开发效果的两项重要指标。从注水倍数和驱油效率的定义出发,建立了注水倍数与驱油效率的理论关系式。它为利用油藏特性参数及矿场生产资料研究不同开发阶段(含水率)驱油效率的变化规律提供了理论依据。     

边、底水驱油藏提高采收率技术研究

本文针对边、底水驱油藏特点,首先开展了多种化学驱油技术的优选及论证,明确了本类油藏开展化学驱是可行的,并进一步明确了最优驱油技术,在此基础上开发了一种全新的高效驱油体系,最终开展了物理模拟提高采收率实验,研究表明,在边、底水驱油藏开展"3+3"化学段塞组合驱使完全可行的,可以提高采收率17%以上.本文对于边、底水驱油藏开展三次采油研究进行了积极的探索.有一定的借鉴意义.     

浅谈聚合物驱油的影响因素

聚合物驱油简称聚驱,它是在水中加入聚合物,增加水相黏度,改善油水流度比,达到提高采收率的目的。聚驱作为提高采收率的一种有效措施,已经得到了广泛应用,但对于它的某些理论和机理仍然还未认识清楚．从而影响到驱油效果。     

驱油用化学剂的机理分析

化学剂驱油已经成为三次采油常用的驱油方式，并且化学剂的使用使得原油的采收率再次获得了提高。本文主要介绍了三次采油中常用的化学剂类型及驱油机理。     

注聚合物新增油田可采储量动态预测方法研究

随着我国陆上老油田开发的持续,综合含水较高,油气产量下降难以避免,以聚合物驱油为代表的三次采油技术得到了广泛的应用。原有的可采储量预测多基于天然能量开发或者注水开发所进行的,而注聚合物驱替在机理上与常用的注水开发有着较大的不同,注聚合物后的新增储量需要重新评价。文章应用动态资料,从驱替特征曲线特征研究入手,建立了不同渗透率级差、不同聚驱控制程度、不同聚合物用量、不同聚合物粘度与原油粘度比情况下注聚机理模型,应用数值模拟得到的非均质油藏注聚后驱替特征曲线变化趋势,然后根据已经结束注聚区块注聚增加可采储量递推校正,以得出注聚合物新增可采储量的预测方法,并对聚驱控制程度、聚合物用量、渗透率变异系数等对聚合物驱效果影响进行分析,评价精度较高,效果真实可信。     

注二氧化碳与氮气提高石油采收率技术的对比研究与应用

本文描述了我国提高采收率的发展现状,以及适合注CO2与N2的筛选标准。讨论了注CO2提高油气藏采收率的机理,并对注CO2与注N2提高采收率两者做了比较。评价了不同注入CO2与N2的驱替效果,结果表明：中轻质油藏适合注CO2驱油,而埋藏较深的,重力驱气顶油藏和凝析气藏适合注N2。     

荔浦县蒲芦水电站工程拱坝水工整体模型试验研究

文章论述了荔浦县蒲芦水电站拱坝的试验研究工作,通过水工模型试验,测定溢流堰泄流能力,观测堰面及下游河道水流流态,以及各种泄流工况时下游河道被冲刷的情况,由此对拱坝提出优化方案。     

左江山秀水电站工程船闸上闸首防洪检修闸门设计

船闸上闸首防洪检修闸门的主要作用是保证闸室的正常检修和汛期挡洪,文章主要介绍山秀水电站工程船闸上闸首防洪检修闸门门叶结构及其零部件设计,供类似工程参考。     

Linear Parks and the Political Ecologies of Permeability: Environmental displacement in São Paulo,Brazil

This article considers the politics of resettlement within ongoing efforts to construct the Tietê River Valley Park (Parque Várzeas do Tietê), a linear park that upon completion will be the largest linear park in the world. Located in the eastern periphery of São Paulo, Brazil, the proposed project uses riverbank naturalization to dampen floodpeaks and bring green space to underserved populations. Due to the presence of low‐income neighborhoods on the river's edge, however, the project calls for the removal of roughly 40,000 people. Drawing from urban political ecology and contemporary concerns about environmentally induced displacement, I consider the conflicts over resettlement that mark the project. I analyze the project itself and situate it within a regional context defined by autoconstruction, regularized flooding, and insecure tenure. I argue that despite claims that the project will yield less risky lives for displaced residents, the form through which the project is being developed actually puts displaced residents in heightened situations of risk. I consider how communities have organized to resist displacement, and call for an approach to governance in peripheral landscapes that takes seriously the histories of collective infrastructural provisioning and autoconstructed housing that have marked them for decades.     

Adverse Selection and Moral Hazard in Equity Partnerships: Evidence from Hollywood's Slate Financing Agreements

We use a movie industry project‐by‐project data set to analyze the principal–agent problem in slate financing arrangements. Under this specific film financing regime, which has become a significant mode of raising capital in Hollywood over the past decade, an external investor concludes a long‐term contract with a film producer and commits to cofinance a larger number of future film projects of that particular partner. In line with our theoretical conjectures, slate cofinanced movies receive poorer quality ratings and yield considerably lower return rates. Our data suggests that a substantial part of these performance differences may be attributed to adverse project selection and producer moral hazard.     

低渗透油田CO_2驱注入参数优化研究

国内外研究表明CO2驱是低渗透油田开发的有效方法之一,针对低渗透油藏自然产能低、地层能量不足、地层压力下降快等引起采收率低的现状,在CO2驱油机理分析的基础上,通过数值模拟方法对CO2驱注入参数进行研究,结果表明CO2驱具有良好的开发效果,对后期的CO2驱推广应用具有指导意义。     

Futures of Crisis,Futures of Urban Political Theory: Flooding in Asian Coastal Megacities

Coastal megacities across Asia have experienced devastating floods in recent years. Studies project dramatic increases in populations prone to chronic flooding and potential permanent inundation of densely populated urban areas in future decades. The uncertainties presented by future flood risks disrupt prevalent state visions of globalization‐driven prosperity. The emerging reality of a shift in relationship between water and urban settlements has begun driving recalibration of power relations around a range of issues, including longstanding contestations over infrastructure delivery, housing, land rights and political representation. Flood mitigation efforts have played out in debates over displacement and eviction, and distributional concerns about the costs and benefits of these initiatives. This article develops a conceptual framework for assessing the implications of projections of flood risk for urban political theory. The article begins by identifying political contestations that emerge around the varied ways water intersects with urban processes—through dynamics of permeability, flow and drainage, aquifers and pipes, and coastal defense. It then explores how projections of the crisis of flooding have reshaped three contemporary debates in urban politics: those around property rights and the question of ‘informality’; around neoliberalization and financialization; and around the rescaling of the state. Finally, it briefly deploys this framework to examine the case of Jakarta.     

特低渗透油藏水驱、CO_2驱和水/CO_2交替驱效果对比

针对特低渗透油藏,在模拟实际油藏条件下开展水驱、CO2驱和水/CO2交替驱室内实验研究。结果表明:在相同条件下,水/CO2交替驱的采收率比CO2驱高22.63%,比水驱采收率高27.22%。水驱见水早,含水率上升快,注入压力高;CO2驱虽然注入压力低,但CO2气窜非常严重;水/CO2交替驱注入压力比CO2驱高,但远远低于水驱压力。水/CO2交替驱见气和见水时间较CO2驱和水驱晚,而且气油比和含水率上升速度慢。因此利用CO2驱油时,应首先选择水/CO2交替驱。     

THE ECONOMICS OF MOVIES: A LITERATURE SURVEY

Abstract The film industry provides a myriad of interesting problems for economic contemplation. From the initial concept of an idea through production, distribution and finally exhibition there are many aspects to the film project and the film industry that present new and interesting puzzles worthy of investigation. Add to this the high level of data availability, and it is little wonder that an increasing number of researchers are being attracted to this industry. To date, however, there are no comprehensive surveys on the contribution of economists to this literature. This paper attempts to fill this void and unify what is known about the industry. It also identifies and discusses potential areas for new research.     

某油田塞218区块注水开发效果评价

本文主要评价塞218区块注水开发效果,针对塞218区块物性差异造成平面非均质所暴露出的开发矛盾,通过注水试验,分别总结了塞218区块东部和西部注水开发效果,探寻间注、强注措施在特低渗油田开发中的应用效果,为同类油藏高效开发积累经验。     

我台的村村通改造工程

省直属广播电视发射台,根据国家广电总局、省广电局"村村通"工程统一部署,进行广播电视发射机房改造。针对年久失修的机房地面、设施,统一安排,统一部署,统一指挥。在不影响安全播音工作的情况下,进行重新翻修、改造,增添新设施,新设备。增加发射机房利用效率,顺利圆满完成我台"村村通"改造工程,为我台广播电视事业发展打下坚实基础。