Ordovician System

New advances on the lower and upper boundaries of the Ordovician system in China

中国奥陶系顶、底界线研究的新进展

Detection of water-resisting layer in Upper Ordovician system based on seismic inversion method

基于地震反演方法的奥陶系顶部含隔水层探测

Study on formation protection in the small clearance of the Ordovician system ;

奥陶系小间隙井油气层保护研究；

Application of Underbalanced Drilling Technology in Ordovician System in Northern Tarim

负压钻井技术在塔北奥陶系地层中的应用

The Ordovician system in China

中国的奥陶系

Identification and division of the Ordovician system strata in Xinjiang Tahe Oilfield

新疆塔河油田奥陶系地层录井识别与划分

The determination of Ordovician system top boundary in Well TK 241 of Tahe Oilfield

塔河油田TK241井奥陶系顶界的确定

Viewing the Ordovician system of western fringe of Northern China platform from Zhuozi mountain

从桌子山剖面看华北地台西缘奥陶系

Based on data of exploring authors discussed the hydrogeologic characteristics of Ordovician system in West Yanzhou .

本文以兖州西部水源地勘探、抽水试验资料为基础，通过对奥陶系的水文地质特征的综合研究，将奥陶系含水岩组划分为7个含水层段。

Some elements in Ordovician system water were different from those in the quarternary system water ( P < 0 05 ) .

部分元素在岩石层以下的奥陶系水与第四系水的含量有差异（P<005）。

In north China , the thickness of Ordovician system is larger , the water-abundance is better .

华北地区奥陶系厚度大，富水性强。

The Ordovician system is characterized by the tidal flat facies with a few shallow sea facies .

奥陶系以发育潮坪相为特征，并有少量浅海沉积。

A primary study on the genesis and features of karst from Ordovician system in the Xishan hill of Beijing

北京西山奥陶系岩溶发育特征及成因初探

A discovery of pyroclastic rock in Ordovician system in yongxin-chongyi area , jiangxi province and its significance

江西永新&崇义地区奥陶系内火山碎屑岩的发现及其意义

Karst water of upper plane coal bed is the second layer limestone Karst and gets water recharge from Ordovician system limestone .

煤层顶板是二灰岩溶含水层，接受奥陶系灰岩岩溶水的补给。

Framework of Stratigraphical Sequence in Craton Basins An Example from Ordovician System in Wudang , Guiyang

克拉通盆地的地层层序格架&以贵阳乌当奥陶系为例

This paper systematically studied the sedimentary features of the Ordovician system , specifically divided sedimentary facies of every formation , and found sedimentary model of the Ordovician system .

本文系统地研究了大巴山南坡奥陶系的沉积特征，详细地划分了该系各组段的沉积相，并建立了奥陶系的沉积相模式。

A large amount of first hand data have been gained by the field investigation of the carbonate karst of the Ordovician system in the Xishan Hill of Beijing .

通过对北京西山奥陶系碳酸盐岩岩溶的野外调查，取得了大量的第一手资料。

On the organic maturity of the Ordovician system in the northern section of ith western margin of the Ordos Basin by using conodont color altered index

应用牙形刺色变指标探讨鄂尔多斯西缘北段奥陶系有机质成熟度

The high viscosity gel acid system and low friction emulsified acid system can attain the requirement of TaHe oil field Ordovician system 's FHR deep acid-fracturing reconstructed .

研制的性能良好的高粘度胶凝酸体系和低摩阻乳化酸酸液体，能满足塔河油田奥陶系缝洞型碳酸盐岩储层深度酸压改造的需要；

The Lower Paleozoic reservoir mainly distributes in weathering crust of Majiagou formation of Ordovician system , by the crystal dolomite primarily , corrosion pore growth .

下古生界储层主要分布于奥陶系马家沟组项部风化壳，以马五段为主，以细粉晶白云岩为主，溶孔发育。

Field application shows that the system has stable performances and good cuttings transportation , and can fully meet the requirements of under-balanced drilling in the Ordovician system in north Tarim .

现场应用表明，无固相聚合物钻井液体系性能稳定，携岩性好，完全满足了塔北奥陶系欠平衡钻井要求。

Seam floor is water-resisting layer belonged to Benxi group , and about 30m below this floor is limestone Karst aquifer of Ordovician system .

煤层底板为本溪群隔水岩组，下距奥灰含水层30m左右。

Exploration and Technical Study of Buried Hills of Ordovician System in Northern Part of Bohai Bay Basin RESEARCH ON DEVELOPMENT PROGRAM OF THE SU . 1 BURIED HILL CONDENSATE RESERVOIR IN NORTH CHINA

渤海湾盆地北部奥陶系潜山勘探与科技攻关华北地区苏1潜山凝析气藏的开采方法探讨

The main reservoir in Tahe Oilfield of North Tarim can be classified as buried hill reservoir , and it is located in the carbonate rock formation in the Ordovician system .

塔里木北部地区塔河油田的主力油藏为奥陶系碳酸盐岩潜山型油藏。

The major structure in the area is the NE-NNE folded belt consisting of Banxi Group of the Middle Proterozoic era to the Ordovician system of the Early Paleozoic era .

由新元古界板溪群至下古生界奥陶系所构成的NE&NNE向褶皱带为区内主体构造；

According to the hydrous pyrolysis results of immature source rock from Ordovician system , average apparent activation energies and frequency factors of kerosene from the Lower Paleozoic at different evaluation stages are calculated .

利用爱沙尼亚奥陶系含藻干酪根未成熟生油岩样品的加水热模拟实验结果，计算了下古生界藻干酪根在各不同演化阶段的平均表观活化能和频率因子。

On the coast , of these bays sinian system , cambrian , series and Ordovician system 's limestone , dolomite and so on soluble crags class widespread distribute .

海湾的海岸上广泛分布的震旦系，冷武系和奥陶系的石灰岩、白云岩等可溶性岩类。

Based on the abundant information from detailed field investigation , measuring and indoor rock mineral identifying , the authors regard that the minerogenetic matters come from the old basement and Early Palaeozoic Ordovician system .

作者通过详实的野外考察和综合室内测试、岩矿鉴定等研究资料分析，认为其成矿物质主要来源于古老基底以及早古生代奥陶系；

During the geological evolution , carbonate rocks of Ordovician system in the southwest margin of Ordos Basin formed a kind of reservoir whose reservoir space type is mainly secondary origin voids , vugs and fractures .

鄂尔多斯盆地西南缘奥陶系碳酸盐岩在地质演化过程中形成了以次生成因的孔、滑、缝为主要储集空间类型的储层。