侏罗系地层已钻穿。
在钻井施工中，白垩系、侏罗系地层井壁失稳严重。
In the drilling process, the collapse of wellbore wall is severe in the Cretaceous and Jurassic strata.
针对侏罗系地层高硬度、强研磨性等特点，研究并试验了几种特殊类型的钻头。
Considering the characteristics of high degree of hardness, abrasion and high temperature of Jurassic layer, some special bits were investigated and applied.
川西坳陷上三叠统至侏罗系地层主要表现为岩石致密、研磨性强，钻井速度慢，建井周期长。
From upper Triassic to Jurassic of west Sichuan Depression, the rock is dense, the grinding is strong, the speed of well drilling is slow and the cycle of building well is long.
根据成岩作用现象及划分标志，本区侏罗系地层可划归于埋藏成岩阶段的早成岩B亚期，晚成岩A亚期及表生成岩期。
It is evidently concluded that Jurassic rocks in this area have undergone burial diagenesis, and can be classified as B sub-period of eogenetic, A sub-period of telogenetic and epidiagentic stages.
通过回顾三塘湖盆地马朗凹陷侏罗系地层—岩性油气藏的勘探历程，系统总结了实践中的关键环节和获得的地质认识。
By reviewing the exploration history of Jurassic hydrocarbon reservoir of Malang depression in Santanghu basin, this paper summarizes systematically the geological cognition.
侏罗系煤系地层广泛分布于我国西北地区，低渗透砂岩储集层是其主要的储集层类型。
Jurassic coal-bearing formation scatters over the northwestern China. The low-permeability sandstone reservoir occurs as the main reservoir type.
但油气演化程度高，大多已进入高成熟和过成熟阶段，至今只在侏罗系发现有油藏，三叠系及其更老地层皆为气藏。
Owing to its high evolution, high or over maturity, oil pools only have been discovered in Jurassic, in Triassic or even older beds only dis - covered gas pools.
河北省蔚县王喜洞村附近有含煤地层零星出露，以往地质资料多定为侏罗系。
The age of coal-bearing stratum of Wangxidong used to be regarded as Jurassic system .
区域综合评价以高精度层序地层学的研究思路为主线，圈定侏罗系储层发育的有利区域。
Regional comprehensive evaluation should be carried out by the principle of high resolution sequence strata stratigraphical study to circle the distribution of Jurassic reservoir.
本文采用小尺度地层单元的等时追踪对比方法，对研究区侏罗系中相当于中期旋回层序中的中、小层尺度地层单元进行了等时追踪对比。
Applying small scale strata units tracking and correlation method, the middle to small strata units of the Jurassic middle cycles in the studied area has been tracked and correlated in this paper.
分析了该天然气的成因，指出它主要是来自储层原油的菌解，另外还有侏罗系浅部煤系地层生物气的贡献。
The formation mechanism of gas is analyzed in the paper, the majority of gas derives reservoir oil degradation gas, the minority derives the biogenic methane in Jurassic coal stratum .
二道岭矿区侏罗系的成因属鄂尔多斯中生代盆地西缘的陆相碎屑沉积， 岩石地层自下而上为富县组、延安组、直罗组和安定组。
The Erdaoling mine is located on the western margin of the Mesozoic Odors basin and belongs to continental clastic deposit during the Jurassic period.
川西地区白马庙气田侏罗系的天然气，以往大都认为是来自上三叠统煤系地层，但对具体来源于上三叠统哪一个层位却存在较大的分歧。
Most of people considered that the natural gas in Jurassic in Baimamiao gas field in West Sichuan Basin came from the coal measure strata of Upper Triassic in the past.
晓南煤矿含煤地层属侏罗系陆相沉积。
Coal measures in Xiaonan coalmine belong to Jurassic terrestrial deposit.
焉耆盆地为我国西部含煤、含油气盆地，侏罗系含煤地层是最重要的潜在源岩。
The Yanqi basin is a coal-bearing petroleum basin in northwest China. The most important potential source rock interval in this basin is the Jurassic coal-bearing series.
表明早期注入到这些油层的油气组分来源于前侏罗系湖相泥岩，晚期注入的油气组分来源于侏罗系煤系地层或煤岩。
They indicate that the early charged oils are derived from the pre-Jurassic lacustrine mudstones and the later charged oils are from the Jurassic coal-bearing strata or coals.
对准噶尔盆地西北缘地区侏罗系层序地层学的研究表明，在该地区发育多级坡折带。
The study on the sequence stratigraphy in Jurassic system of the northwestern area of Junggar Basin shows that there mainly developed multiple slope breaks.
在逆冲断裂的下盘，是一套正常沉积层序的地层，分别为侏罗系、三叠系、石炭—二叠系、寒武—奥陶系等地层。
There is a normal deposition sequence stratigraphy beneath the lower wall of over-thrust fault, such as Jurassic, Triassic, Permian-Carboniferous, Cambrian-Ordovician system.
在逆冲断裂的下盘，是一套正常沉积层序的地层，分别为侏罗系、三叠系、石炭—二叠系、寒武—奥陶系等地层。
There is a normal deposition sequence stratigraphy beneath the lower wall of over-thrust fault, such as Jurassic, Triassic, Permian-Carboniferous, Cambrian-Ordovician system.
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