山西潞安古城井田煤层气资源赋存特征及开发潜力分析

以煤田地质勘查资料为依据,结合井田及周边煤层气勘探成果,研究了古城井田煤层气赋存地质条件,对煤层气资源量及开发条件进行了评价。结果表明：3#煤层平均含气量12.60 m3/t,平均含气饱和度约为67.34%,总体表现为欠饱和-饱和煤储层,区内煤层气预测地质储量为138.64×108m3,资源丰度平均为0.90×108m3/km2,资源富集（资源丰度）表现为西高东低、北高南低的格局;3#煤层可采资源量大,预测煤层气实际采收率为35%~45%,总可采资源量60.49×108m3。     

上海旧里保护改造模式与产权处置路径

保护性改造里弄,维护建筑历史和城市文脉是当前城市更新思潮的主流,但改造过程将面临土地制度的诸多约束。本文以静安别墅、田子坊、建业里、179街坊、思南公馆等五个较具代表性的改造案例分析入手,结合产权变动与建筑改造解构与组合,提出里弄的保护改造四种模式,并分析不同模式下土地产权处置差别化方式、路径和土地利益分配形式,为城市日居住保护改造实施提供理论和实践借鉴。     

柴达木盆地北缘下干柴沟组下段湖相混合沉积发育特征及其对储层的影响

柴达木盆地北缘的古近系下干柴沟组下段是油气勘探的重要目标,查明该区储层发育的控制因素是深入勘探的重要基础。根据岩屑录井、普通薄片以及铸体薄片等资料对该区冷湖七号和南八仙构造的储层特征进行了对比分析。研究表明,该区大量发育陆源碎屑-碳酸盐的混合沉积,但是由于水体咸度的不同:在冷湖七号的滨浅湖混积岩中碳酸盐和硬石膏含量较高,颗粒主要为基底式胶结;而南八仙构造地处辫状河三角洲前缘相带,因河流的稀释作用,混积岩中硬石膏含量很少,颗粒为孔隙式－基底式钙质胶结,原生孔喉较为发育,有利于后期酸性流体的溶蚀改造。两种类型混积岩的初始孔隙度以及孔喉演化模式的不同,是最终引起两个地区含油气丰度巨大差异的一个原因。     

MT方法在冀东迁安铁矿区深部找矿中的异常识别

文章叙述了通过MT方法在已知矿体上的剖面试验,结合钻探验证的3个钻孔的见矿情况,以及电偶极子人工场源对观测数据影响的对比、分析,指出依据航磁异常布设、采集的大地电磁剖面测深数据,尽管测点位于生产矿区,数据受到较严重的人文噪声干扰,且其部分频段异常形态与近区特征非常相似,实际上应为数据反演过程中所用软件未曾考虑铁矿石磁导率所致,而非近区效应;当一维视电阻率和相位曲线自几千赫兹以上即出现类似近区特征,二维反演剖面中的假象视电阻率异常高达几千至几万欧姆米时,应为有较强磁性的岩石和磁铁矿的反映;具有一定磁性的岩石和磁铁石英岩（包括磁铁石英辉石岩）在假象视电阻率异常强度、异常梯度变化上具有不同特征,可结合岩、矿石的电性、磁性特征予以识别.     

长偶极大功率可控源激励下目标体电性参数的频率响应

利用三维（3D）全空间积分方程准线性解作为数值模拟手段,对包含电离层、大气层和地球介质层的“地-电离层”典型异常目标体多层介质模型进行了数值模拟,得到了偶极源长度100 km、电流200 A、收发距离远达1600 km的合理的异常电性目标体的电阻率-频率响应结果.通过对不同埋深异常目标体的电阻率-频率特征的讨论,认为当考虑电离层和大气层的“地-电离层”大尺度深层横向不均匀复杂介质模拟时,电磁场对深部目标体仍有很好的异常响应,但当异常体电阻率及同一电阻率的岩石埋深不同时,其电阻率-频率的响应特征有很大不同,这正反映了不同岩石物性参数的电阻率-频率响应特征.文中结果表明从长偶极大功率源（WEM）激励的电磁场观测资料区分岩石的电阻率参数是可能的,这为利用WEM观测资料建立电性参数和岩石/地层参数经验关系奠定了基础.     

东营凹陷永554古近系沙四段沟道浊积岩相模式

在岩心观察基础上,通过薄片鉴定、粒度分析等测试手段,综合地质、物探和测井资料,对东营凹陷永5 5 4井区古近系沙四段砂砾岩体进行研究。结果表明,该砂砾岩体是在东营凹陷东北边缘陡坡带控盆断层及其派生的次级小断层的控制下,在与凹陷长轴近于平行的断槽中形成的深水沟道浊积岩。该沉积体岩石成分成熟度和结构成熟度均较低,碎屑物质以递变悬浮搬运为主,沉积构造具有典型的重力流成因特征。建立了沟道浊积岩退积型相模式,分析了该沟道浊积岩体的储集性能及成因,并对下一步油气勘探提出建议      

Progress in studies on the structure and physical properties of the mantle in China

The studies on the structure and physical properties of the mantle by Chinese geophysicists from 2003 to 2007 are reviewed in this report. It mainly contains studies on the seismic velocity structure of the mantle,anisotropy of the mantle,mantle discontinuities,mantle convection and the physical properties of mantle. The review concerns mainly the contents,the methods used and the results of the studies. It can be found that new progress in the study on the structure and physical properties of mantle has been made in the last four years in China. In some preexis-tent areas much progress has been made,advanced methods have been adopted,extensive international co-operation has been conducted in many ways,and the scope of the co-operation has gradually expanded. More-over,some new fields appear as well.     

Numerical experiments for the conductive properties of saturated rock

The reservoir evaluation as a key technology in oil exploration and production is based on the electrical transport property (ETP) of saturated rock that is described in a mathematical form with Arhcie’s equa-tion. But there have been increasing cases observed in many researches indicating that the ETP is non-Archie especially for the complex reservoir with low porosity and permeability. In this paper,the numerical experiments based on the Lattice Boltzmann method (LBM) have been employed to study the effect of porous structure and fluids on the ETP for revealing the nature of non-Archie phenomenon in micro-scale. The results of numerical experiments have proved that the saturation exponent n is a function of water saturation and porosity instead of being a constant in Archie’s equation. And then,a new formula has been developed for the EPT through combining the result of numerical simulation with that of laboratory measurements. The calculations from the new formula show very good agreement with laboratory measurements to demonstrate the efficiency of the new formula over the conventional methods in non-Archie rock.     

自然电位场的振动激励效应

Vibrator excitation generates not only reflections and refractions of wave fields on the subsurface interfaces but also electromagnetic waves with different frequencies. In this paper, we address the vibration-induced effects on the spontaneous potential field. The effects of controllable vibration on the spontaneous potential field were studied under real field geologic conditions. Experimental data confirmed that the vibration-induced effects on the spontaneous potential field do exist under field conditions. Monitoring records over a long time interval showed that there exist three information zones in the vibration-induced effects on the spontaneous potential field. These are the signal-varying zone, the extremestable zone, and the relaxation-recovery zone. Combined with different well-site data, it was concluded that the time-varying features of the anomalies in the information zones was closely related to the properties of the subsurface liquid （oil and water）.     

边坡岩体软弱夹层力学特性试验研究

采用自制试验装置,进行边坡岩体中的软弱夹层的力学特性试验。分析实测的剪应力-变形曲线发现,该曲线有明显的比例极限、屈服点和峰值点,表明在试件受力变形初期,剪切力-变形近似呈线性关系,剪切刚度为常量;随法向应力的增大,峰值剪应力呈线性增长,达到峰值强度之后,随剪切变形增大,抗剪强度变化不大,残余强度近似等于峰值强度,表明试样发生剪切破坏,其破坏类型呈“塑性”破坏型。软弱夹层的剪切变形可分为3个阶段,各个阶段的强度参数不同,对边坡工程来说,为保证其有足够的安全系数,建议软弱夹层强度参数取低值。根据试验结果得到的法向应力-压缩位移关系曲线近似呈双曲线型,当法向相对位移小于3.4 mm时与理论结果更为接近。