完成20组练习后，再用非主力脚做同样的练习。
Make 20 complete passes and then do the same with your weaker foot.
有利的沉积相带、运移输导条件及鼻状隆起构造共同控制了延长组主力油层的分布。
The sedimentary face zone, reservoir physical properties, nose fold background and the condition of hydrocarbon migration carrier are the main factors of control hydrocarbon accumulation.
其中延长组的长2油层组是本地区的主力产油层系。
储集层类型为下古生界奥陶系古风化壳型，其主力含气层为马家沟组第五段。
The reservoir type is Ordovician weathering crust in the Lower Paleozoic, and the main gas layer is in the fifth member of Majiagou Formation.
本文在油源对比的基础上，对三塘湖盆地低熟源岩有机显微组分进行研究，认为盆地主力源岩芦草沟组主要生烃显微组份为腐泥无定型组。
On the basis of oil source correlation, the paper studied the organic microscopic component of the immature hydrocarbon source rock in santanghu basin.
台北凹陷是吐哈盆地的主要含油气区，而西山窑组煤系地层是该地区的主力烃源岩。
The Taibei Depression is the main oil and gas bearing area of Tuha Basin, and the coal bearing stratum of the Xishanyao Formation is the most important source rock in the area.
以长庆气田北区陕81井组4口生产井2个主力生产层为计算实例。该方法在今后的数值模拟研究中有一定借鉴意义。
With 4 Wells and 2 production zones in Shan 81 well group in northern Changqing gas field as an example, this method has a certain reference value in the numerical simulation study.
蓬莱镇组气藏是川西北地区新场气田成组气藏中的主力气藏，加砂压裂改造储层取得重大进展。
Gas reservoirs situated in Penglaizhen sector are major ones in northwest area, reservoir improvements make significant development by sand fracturing.
得到了本区新生代油气分布的几点规律：下干柴沟组上段（E23）和上干柴沟组（N1）作为本区的主力烃源岩是形成油气田的先决条件；
The rules of hydrocarbon distribution are found:The distribution of effective source rocks in E23 and N1 formation is the precondition to discover hydrocarbon;
青西油田主力油藏下白垩统下沟组，平均埋深4500m左右；
The average buried depth of Xiagou group in the major reservoir of Qingxi oil field is at about 4500m.
青西油田主力油藏下白垩统下沟组，平均埋深4500m左右；
The average buried depth of Xiagou group in the major reservoir of Qingxi oil field is at about 4500m.
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