方正断陷源盖空间匹配关系及控藏作用

为了研究方正断陷油气成藏规律,基于源岩和盖层的发育及分布特征,从二者空间匹配关系入手, 对该断陷油气成藏与分布的控制作用进行了研究。 结果表明：方正断陷主要发育 2 类 5 套源盖空间匹 配关系,其中自源自盖型 2 套,主要发育于新安村+乌云组;下源上盖型 3 套,主要发育新安村+乌云组 至宝二段。 Ⅰ和 Ⅲ 套源盖空间匹配关系在整个断陷均有分布,Ⅱ 和 Ⅴ 套仅分布于断陷东部,Ⅳ 套仅分 布于断陷西部。 5 套源盖空间匹配关系对油气成藏与分布的控制作用主要表现在 3 个方面,分别为源盖 空间匹配关系的数量控制着油气聚集与分布的层位, 同一层位源盖空间匹配关系的数量控制着油气聚 集的数量以及源盖空间匹配关系中盖层的质量控制着油气聚集的数量。     

川南龙马溪组页岩孔隙分形特征

以川南长宁—兴文地区龙马溪组页岩为对象,基于压汞实验测试结果研究其分形特征。对压汞法实验结果进行分析,采用Menger海绵模型和基于热力学关系的分形模型,计算得到川南地区龙马溪组页岩的分形维数。研究结果表明基于热力学关系的分形模型比较恰当地反应了川南长宁—兴文地区龙马溪组页岩的孔隙结构;龙溪组页岩具有明显的分形特征及较大的分形维数,分形维数在2．9337～2．9941;页岩孔隙的分形维数与TOC含量、脆性矿物含量呈正相关,而与黏土矿物含量、碳酸盐岩含量及长石呈负相关,其中黏土矿物中高岭石和绿泥石、碳酸盐岩中方解石及脆性矿物的石英对页岩孔隙结构分布特征影响较大。     

Convolutional Variational Principle,Reciprocal and Uniqueness Theorems in Linear Fractional Two-Temperature Thermoelasticity

Two general models of fractional heat conduction law for non-homogeneous anisotropic elastic solid is introduced and the constitutive equations for the two-temperature fractional thermoelasticity theory are obtained, uniqueness and reciprocal theorems are proved and the convolutional variational principle is established and used to prove a uniqueness theorem with no restrictions imposed on the elasticity or thermal conductivity tensors except symmetry conditions. The two-temperature dynamic coupled, Lord-Shulman and fractional coupled thermoelasticity theories result as limit cases. The reciprocity relation in case of quiescent initial state is found to be independent of the order of differintegration.     

胶凝堆石料动本构关系及动模量衰减模型

基于动三轴试验,研究了不同围压、不同胶凝含量下胶凝堆石料的动本构关系及动模量衰减规律。结果表明,胶凝堆石料动本构关系仍可用Kondner R L双曲线模型进行描述,围压、胶凝含量对动本构关系均有影响,但围压对其影响较大;胶凝堆石料动模量随动应变的增大而非线性减小,且具有明显的应变软化特征,同等条件下动模量随围压和胶凝含量的增大而增大。根据动模量衰减曲线,提出了动模量衰减模型,通过线性回归分析,得到了胶凝堆石料动模量衰减模型参数表达式,为胶凝堆石坝的动力分析提供了参考。     

扶余油田中区泉四段储层有效厚度下限研究

扶余油田中区泉四段主要为三角洲相沉积,储层岩性以粉砂岩和细砂岩为主.通过研究区取心井四性关系研究,采用岩心分析、录井及试油资料刻度测井的方法,建立了研究区的泥质体积分数、孔隙度、渗透率和原始含油饱和度测井解释模型.通过取心井岩心分析数据与模型解释数据对比,验证了解释模型的正确性,为进行测井资料二次数字处理,实现储层参数...     

洞庭湖治理与湖区湿地保护探讨

洞庭湖是长江洪水的天然调蓄场所,不仅承接湘、资、沅、澧四水水沙,还纳入由荆江三口分泄的长江水沙,经湖泊调蓄后由城陵矶注入长江,形成了复杂的江湖关系,需要加强流域统一管理。通过分析洞庭湖区自然、经济状况及湖区湿地情况,结合1998年大水后湖区的治理情况及三峡工程蓄水运用后江湖关系的新变化,深入分析湖区湿地生态环境所面临的诸多问题,探讨如何在新一轮洞庭湖综合治理过程中,科学处理湖区综合治理与湿地生态环境保护与修复的关系。提出了洞庭湖统一管理措施,以便有效保护洞庭湖湿地生态环境与资源。     

水驱多层砂岩油田注采关系定量评价方法研究

针对喇萨杏油田油层多、非均质性严重、开发时间长、层系井网复杂的特点,以精细地质研究成果和渗流理论为基础,首先提出了一套油水井注采关系的自动划分方法,实现了多套层系不同开发阶段油水井注采关系划分的自动化;其次研究形成了改进的水驱控制程度统计方法,并提出了水驱控制程度构成的概念,最终形成了水驱砂岩油田注采关系的自动评价技术。提出的方法具有操作简便、实用、效率高的优点,可广泛应用于水驱砂岩油田的注采关系评价和油层动用状况研究。通过喇萨杏油田11个水驱区块的应用,水驱控制程度统计精度达到98.6%,极好地满足了油田需要。     

A reduced mechanism for ethylene/methane mixtures with excessive NO enrichment

A detailed mechanism for methane–ethylene mixtures enriched with excessive amount of NO was systematically reduced for efficient numerical simulations of flames in arc-heated co-flowing air. Methane and ethylene were selected as the surrogate fuel in the present study due to their drastically different features of ignition and extinction properties and flame propagation speeds, such that the mixtures of them may be utilized to mimic practical hydrocarbon fuels with various kinetic properties in experiments. The recently released USC Mech-II for C1–C4 was grafted with the NO_x sub-mechanism in GRI-Mech 3.0 with updated reaction parameters for prompt NO formation. The resulting detailed mechanism with 129 species and 900 reactions was first validated against experiments involving NO_x enrichment and reasonably good agreements were observed. The detailed mechanism was then employed as the starting mechanism for the reduction. A skeletal mechanism with 44 species and 269 reactions was derived using the methods of directed relation graph (DRG) and DRG-aided sensitivity analysis (DRGASA); a 39-species reduced mechanism with 35 semi-global reaction steps was further obtained using the linearized quasi steady state approximations (LQSSA). Five species related to prompt NO were retained in the reduced mechanism because of their significant impacts on the fuel oxidation. The reduced mechanism closely agrees with the detailed mechanism for ignition and extinction of homogenous mixtures, as well as selected 1-D flames over a wide range of parameters with NO concentrations between 0% and 3%. The observed worst-case relative error of the reduction is approximately 20%. The reduced mechanism was further validated with experiments involving excessive NO_x enrichment.     

浅谈煤矿安全工作的五个关系

分析了我国煤矿安全生产的过程,探讨煤矿安全生产的五个问题,如安全与生产的关系、与煤炭技术的关系、与人体生理的关系、与煤矿管理的关系、与经济和社会效益的关系等,安全工作要标本兼治,煤炭行业要以安全为天,预防为主,这样才会有更好的经济效益和社会效益。     

地应力对岩心渗透率伤害实验及机理分析

生产实际情况表明，有许多油气田对应力较为敏感。随着生产的进行，储集层压力下降，有效应力不断变化，引起油藏产能逐渐降低。为研究这一规律和变化规律，阐述了应用岩民测试有效应力对渗透率影响的实验原理，在对实验数据进行统计分析的基础上，拟合出有效应力与渗透经的函数关系（二次多项式）。应用毛细管渗流概念以有弹性厚壁筒厚理，研究了随着毛细管管壁内外压差变化时，毛细管内半径变化有其对毛细管渗流能力的影响，所得结论与实验结果一致。在实际生产中，应控制油藏压力快速大幅度下降，避免有效应力变化引起油藏渗流能力下降和减产。