地层的

The strata are Triassic Xujiahe group sand-shale stratum which containing coal layer. It is nearly three-century history about the coal layer exploitation. In that time, because of the outdated technique and inorganization, the coal caves have the characteristic of randomicity, concealment, universality, no obviously regularity and the small scale for single cave.

坝区地层为三叠系须家河组砂页岩含煤地层，煤层的开采已近300年历史，由于当时开采技术落后、无组织性，导致煤洞具有随机性、隐蔽性、广泛性、单洞规模小、无明显规律等特点。

High-resolution sequence stratigraphy overcomes the fault of diachroneity in litho stratigraphic correlation .

高分辨率层序地层学克服了岩性地层对比穿时的缺点。

Many methods can be used to restore formation denudation thickness , such as stratigraphic correlation, deposition velocity, well log, compaction curve, vitrinite reflectance, sporopollen and wave analysis method, etc.

地层剥蚀厚度恢复的方法有很多种，例如地层对比法、沉积速率法、测井曲线法、压实曲线法、镜质体反射率法、孢粉法及波动分析法等。

Microbial sedimentation was widespread in the Precambrian and was also developed in stromatolitic carbonate horizons of the Phanerozoic, which constitute one type of microbial carbonates.

微生物沉积作用在前寒武纪地层中普遍发育，在显生宙的一些地层中也较为发育。

Based on sequence stratigraphy theory, three types of identification signs of sequence interface were identified and middle-lower Jurassic was divided into five third-order sequences and ten fourth-order sequences, then the sequence stratigraphic framework was established in Turpan sag.

摘 要：利用层序地层学理论，在吐鲁番坳陷中下侏罗统确定3类层序界面识别标志，划分出5个三级层序，10个四级层序，建立吐鲁番坳陷中下侏罗统的层序地层格架。

Layered described Cambrian - the Triassic formation, with the period of tectonic events on the sedimentary layers and structural features several important period of formation is not integrated interface, and Tajikistan low uplift tectonic evolution into paleouplift a period ( As early as the late Ordovician), paleouplift stereotypes period, the uplift of ancient period (Silurian Period to the Devonian), partial adjustment period in four phases.

分层描述寒武系—三叠系地层，结合各期构造事件研究了各层沉积构造特征及几期重要的地层不整合界面，并将塔中低凸起构造演化分为古隆起形成期、古隆起定型期、古隆起改造期、局部调整期四个阶段。

One of the main purposes of the study is to divide the units of fluid stratigraphy.

流体地层学研究的主要内容之一，就是要划分出流体地层单元。

Sequence analysis on strata is very important in academic study of stratigraphy and petroleum exploration.

层序地层分析在地层学理论研究和石油勘探开发中有着重要的地位。

The trinomial deliverability equation can be determined based on the data of bottomhole flow pressure and gas production by using the rate multipleregression, and the open flow capacity and static formation pressure can also be derived.

为此，提出了一种精度高且计算简便的方法，不需要已知地层静压，只通过井底流压与产气量数据，利用多元线性回归方法，既可确定气井三项式产能方程，还可求得气井绝对无阻流量和地层静压。

Because of large inclination of strata, strong aeolotropism of strata,strong natural deflecting ability and difficultly controlling well deviation by drilling in large inclination structure,traditional deviation control technique heavily influnences mechanical drilling speed and well quality.

大倾角构造由于地层倾角大、地层各向异性强、自然造斜能力强和钻井控制井斜难，传统的防斜打直技术严重影响机械钻速和井身质量。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。