砂质

B using press-volume technique, this paper studied the seasonal changes of water potential at saturated point (Ψ, water potential at turgor loss point (Ψ relative osmotic water content at turgor loss point ROWC(superscript thp, relative water content at turgor loss point RWC(superscript tlp, relative content of apoplastic water, bound water/free water V(subscript a/V, and the difference between (Ψ and (Ψ of Reaurnuria trigyna growing on heavy solonchack, non-salinized soil, and saline soil.

运用压力容积技术，研究了4种盐分生境下长叶红砂饱和含水量时最大渗透势Ψ(上标 sat 下标 s、初始质壁分离时的渗透势Ψ(上标 tlp 下标 s初始质壁分离时渗透水相对含量ROWC(上标 tlp、初始质壁分离时的相对含水量RWC(上标 tlp、质外体水的相对含量、束缚水与自由水的比值V(下标 a/V，以及饱和含水量时最大渗透势与初始质壁分离时的渗透势之差的季节变化。

Filter materials series: fruit shell, anthracite coal filter material, quartzite filter material, cobblestone, pomegranate filter material, magnetic iron ore filter material,manganese sand filter,heavy and light weight biological ceramisite, shale rock ceramislte, fiber ball filter material, modified fiber ball, porcelain sand, EPS polystyrene foam filter bead, active aluminum oxideremoving fluorine

滤料系列：果壳滤料、无烟煤滤料、石英砂滤料、卵石、石榴石滤料、磁铁矿滤料、锰砂滤料、重、轻质生物陶粒、页岩陶粒、纤维球滤料、改性纤维球、瓷砂、EPS 可发性聚苯乙烯泡沫滤珠、活性氧化铝。

Therefore,tapping potencial of remaining oil to improving oil recovery,the recognition of reservoir intraformational heterogeneity in channel sandbodies is proposed and the main targets of reservoir IOR in channel sandbodies of mature oilfields are pointed out as follows:①shutting off strongly-waterflooded intervals to control ineffective circulation of injected water;②strengthening water washing in medium-waterflooded intervals in order to achieve the aimed waterflood efficiency and even to exceed it;③enhancing injection-production consistency and injector-producer ratio of non-waterflooded or weakly-waterflooded intervals for the propose of realizing effective displacement and imporving conforma nce.

根据我国东部主力油田储层绝大多数都属于河道砂体，注水开发进入高含水阶段后，层内剩余油超过层间剩余油，层内矛盾上升为主要矛盾这一特点，从挖掘层内剩余油潜力出发，提出要重新认识河流砂体储层层内非均质性，并指出高含水期河流砂体储层改善采油目标主要有：①封堵强水洗段，控制注入水无效循环；②加大中水洗段注水冲洗强度，达到目标水驱效率，并有可能超过目标效率；③提高未、弱水洗段的注采对应程度和注采井数比，达到有效驱替，提高波及程度。

In this paper, the characteristics of reservoir of reservoir of delta frontal sub-faces of PI Formation in the south of Xingshugang are studied with the data of dense well pattern and rock-mineral identification. The delta frontal sub-faces can be divided into lobate delta frontal sub-faces, branched delta frontal sub- faces and sheeted delta frontal sub-faces. The genetic types of sand bodies in different sedimentary envivonments are analyzed in detail, and the distribution and space-matching relationship of different sand bodies are studied. The micro-pore structure type is studied on the base of the thin section analysis, so the reservoir heterogeneity is studied including plane heterogeneity, interlayer heterogeneity, in-layer heterogeneity and microcosmic characteristic.

利用密井网、岩矿鉴定等资料对杏南地区葡I油层组前缘亚相储层进行研究，将三角洲前缘细分为枝状、朵状、席状3种类型，详细分析了不同沉积环境下砂体的成因类型，描述了不同类型砂体在平面上、空间上的展布特征和组合关系，不同砂体内部性质的差异以及砂体内部微观孔隙结构的类型和分布特征，从平面、层间、层内以及微观特征等方面研究了三角洲前缘储层的非均质性。

According to the analysis of features of the key outcrop sequence stratigraphy, build the sequence frame, through the section comparison, and the study of feature of the 5 key outcrops, then it can be concluded that, conglomerate on the denudation plane or the other contrastive sediment are the main features surrounding the bottom border of the sequence. In the foreland basin sediment environment, the transilient group of mud rock and sandstone are the main sediment features of low-stand system tract. Thick mud rock and sandstone interbedded is the chief component of transgressive system tract, sometimes together with thick turbidity current sandstone; High-stand system tract is composed by the combination of mud rock and sandstone interbedded, with the progradation as its main style. Maximum flooding surface Sediment are usually mudstone, and the thickness is different from each other.

依据关键露头剖面高精度层序特征分析，通过剖面对比建立高精度等时层序地层格架，通过对5条关键露头剖面的详细高精度层序特征分析，认识到：剥蚀面上的粗碎屑岩或与之可区域对比的其它沉积是层序底部边界附近的主要沉积特征；在盆地沉积环境中，砂泥岩发育，厚层、块状砂岩与泥质岩类的突变组合是低位体系域的主要沉积特征；湖进体系域以厚层泥岩夹砂岩为主，有时夹厚度较大的重力流砂体；高位体系域为砂泥互层沉积组合，以进积式叠加样式为主；最大湖泛面多为泥岩，但其厚薄不一。

The paper introduced serious sand production actuality of the quaternary gas reservoir located in Sebei Gas Field,which consists of unconsolidated fine siltstone formations with high content of shale.

介绍了涩北气田第四系高泥质疏松粉细砂岩气藏的出砂现状，通过多年的室内基础理论研究和现场防砂先导性试验成果总结，形成了适合涩北气田的高压一次充填防砂工艺。

The research results indicate that the qualities of the Jurassic reservoir are dominated by construction. Good reservoirs lie to an advantaged nose protrusion, nearly relating to the distribution of sedimentary micro-facies. The reservoir that lies on the main position in the riverway has better gathering characters. Because argillaceous content is increase and the porosity and permeability became smaller, the character of the reservoir becomes bad in the flood plain area that lies on the skirted riverway and between riverways. Characters of the layer relate to the distribution of main sand-body that the better feature of the layer and the bigger thick of sandbody layer.

通过综合储层含油性、非均质性、分类研究的GIS 分析结果，研究认为：长西油田侏罗系储层性质受构造控制，储集性好的储层在区域上大多属于一个有利的鼻状隆起；且与沉积微相的展布密切相关，在河道主体部位的储层其储集性一般都较好，而在河道侧缘和河道之间的泛滥平原沉积区，泥质含量增加，孔渗性变差，储层的储集性也变差；储层优劣与主砂带的分布也有关，砂层厚度越大，储集性越好。

In view of the current situation that sand is short of supply as well as in poor quality in Beijing, the article analyzes the effects of the main technology index of the machine-made sand on the quality of the ready-mixed pumped concrete.

针对目前北京建筑用砂短缺、质次的现状，本文对机制砂的主要技术指标对预拌泵送混凝土的影响进行了试验分析，试验研究了机制砂对预拌泵送混凝土的和易性与强度的影响。

In view of the current situation that sand is short of supply as well as in poor quality in Beijing, the article analyzes the effects of the main technology index of the machine-made sand on the quality of the ready-mixed pumped concrete.

针对目前北京建筑用砂短缺、质次的现状，本文对机制打砂机的主要技术指标对预拌泵送混凝土的影响进行了试验分析，试验研究了机制打砂机对预拌泵送混凝土的和易性与强度的影响。

Development of new process technologies can be of interest from manufacturing cost point of view. The current study assesses the feasibility of using green sand mold to cast AZ91 magnesium alloy.

本研究尝试以湿砂模法浇铸AZ91镁合金，由於湿模砂中含有水气，是必须添加抑制剂避免浇铸过程中，镁合金熔汤与湿模砂的水气反应产生氧化镁渣质及氢气。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。