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127 Ma. These ages suggest problems in stratigraphic correlation, indicate that there is considerable diachroneity in the timing of volcanism and sedimentation in the Middle and Late Jurassic Yanshan orogen, and cast doubt on the traditional interpretation that the Tiaojishan-Tuchengzi sequence is bounded by regional unconformities dated at ca.

这些测年数据说明以往的地层对比是有问题的,燕山造山带在中、晚侏罗世所发育的火山岩和沉积岩地层是穿时的。

The numerical analysis method is used to study the ground movement laws caused by the ovalization variation in the cross section in the action of water and soil pressure of tunnel lining.Based on the stochastic medium theory,this paper suggests the method for calculating this ground movement caused by tunnel ovalization deformation.

采用数值分析方法研究了隧道衬砌在土水压力的作用下,断面所产生的椭圆化变形引起的地层位移规律,并基于随机介质理论,给出了计算隧道椭圆化变形引起地层位移的方法。

Under the guidance of the theories of sedimentation, paleontology, stratigraphy, reservoir geology and digenesis, synthetically applying the methods of the conjunction of spot-line-surface, macro-microscopic and field-indoor, there is a comprehensive study for the upper Permian series in stratum, rock, sedimentary facies and diagenesis, especial for the type and characteristics of sedimentary facies, in the paper.

本文主要是以沉积学、古生物学、地层学、储层地质学等相关理论为指导,运用点线面、野外与室内、宏观与微观相结合的方法,并借助普通显微镜、阴极发光显微镜等手段对川西地区北部上二叠统的地层、岩石、沉积相以及成岩作用进行了研究,尤其是对沉积相的类型及特征作了详细的划分与阐述。

Based on a review of the history of seismic stratigraphy, sequence stratigrapy, and seismic sedimentology, this paper discussed the status and future trend of the seismic sedimentology, and pointed out that 90° phase transformation and frequency division interpretation are just the two technical means rather than key techniques for seismic sedimentological studies.

结合地震地层学、层序地层学和地震沉积学的发展历程对地震沉积学的现状和趋势进行了探讨,认为90°相位转换和分频解释仅仅是地震沉积学研究的技术手段,而不是其关键技术;对于地震同相轴的穿时性问题,也仅存在于3级或4级层中,并且这种穿时性与"沉积物体分配空间"和"相异作用"有关。

Based on the above-mentioned models, the soil pre-reinforcement effects for the arch and frontispiece part of tunnel heading, and a gradually instability concept of face was explained.

4通过建立的一系列工作面地层预加固力学行为模型的数值解,以及有限元数值模拟的结果,对浅埋暗挖法地铁隧道工作面地层预加固参数的设计与选择进行了探索。

The evaluation methods for digital filter ing effects used in Gamma ray logging are discussed.

探讨了γ射线测井信号数字滤波效果的评价方法,指出评价数字滤波效果的判别准则,应包括恢复地层真值的效果评价和跟踪地层突变能力的评价两个方面。

The determination of formation fracture pressure and the geometry of hydraulic fracture is critical for designing rational fracturing program, providing optimal operation pressure, avoiding interzonal crossflow caused by excessive fracture height, and better stimulating the reservoirs.

确定地层破裂压力和水力压裂裂缝延伸几何形态,对于设计合理的压裂方案、提供合理的压裂施工压力、避免压裂裂缝高度过高导致地层间的层间窜漏、更好地达到改善储层的目的至关重要。

Combining the performance of the formation rock mechanics with the rock-breaking mechanism of the PDC bits, the PDC bits suitable for the combination driving drilling in the northeastern Sichuan were selected.

通过对地层岩石力学特性的研究,结合PDC钻头的破岩机理,筛选出了川东北地区适合于复合钻井的地层。

The results indicate that when formation water in Guantao formation is used as a source of water injection in the oilfield,the compatibilities of injected water with reservoir water and injected water with crude oil are better and the injected water with reservoir stone is poor.

结果表明,该油田以馆陶组地层水作为注入水水源时,注入水与油层水的相容性较好,与地层原油的配伍性较好,与岩石的配伍性不好。

By analyzing the conditions and patterns of the regional oil and gas bearing formations with typical crosssections, we have established the patterns of sedimentary conditions for different reserviors.

为了解决上述问题,论文大力开展区域层序地层学研究,建立起全盆地层序和体系域的等时地层格架,揭示沉积体系的时空展布和演化特征,搞清大的地质背景。

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