天然气砂岩

Thus,in combination with neutron,resistivity and density logging,this paper reconstructs feature parameters K1,K2and establishes K1-K2 pattern which can qualitative evaluate gas AOF.Additionally,in the light of different reflection toward gas between neutron and density logging,a relation between test nonresistance outflow and gas-bearing content which varies with different neutron and density logging is built,thus the gas AOF can be quantitative evaluation.

采用中子、电阻率与密度测井相结合，重构指示气层含气性的特征参数K1和K2，放大气层的响应特征，建立根据特征参数定性评价气层无阻流量级别的图版；并根据中子、密度对天然气的反映，建立了基于密度、中子孔隙度差值的含气当量与测试无阻流量的关系式，实现了定量计算致密砂岩气层无阻流量的目的。

This study shows that there are 4 kinds of volcanic facies in deep volcanics in north Songliao Basin: eruptive facies, overflow facies, volcanic vent facies and volcanic sedimentary facies. There are 4 volcanic eruption cycles: Huoshiling period, Shahezi period, Yingchengzi period and Quantou period. There are 4 structural evolution stages: north-south accumulation, west-east subduction, uplift mantle and thin crust, alternative open and close. There are 4 kinds of pool-forming patterns:(1) pattern with the migration along the unconformity and fault to the near crater;(2) pattern with the migration along unconformity and fault to the rift margin;(3) pattern with the migration along unconformity, fault and fracture to the source rock;(4) pattern with the migration of the deep gas along the deep and large fault to the volcanic trap.

研究认为，松辽盆地北部深层火山岩主要存在四种火山岩相：即爆发相、溢流相、火山通道相、火山沉积相，划分为四个火山喷发旋回：即火石岭期、沙河子期、营城子期、泉头期，经历了四个构造演化过程：即南北夹攻、东西俯冲、幔隆壳薄、开合交替，具有四种成藏模式：即沿不整合面和断层运移至近火山口处火山岩圈闭聚集成藏模式、沿不整合面和断层砂岩疏导层运移至断陷边部火山岩圈闭聚集成藏模式、沿不整合面及断层、裂缝运移至源岩区内凹中隆火山岩圈闭聚集成藏模式、深部无机成因天然气沿深大断裂运移至火山岩圈闭聚集成藏模式。

In Kela-2 gas field located in the northern Kuqa depression in the Tarim Basin, the natural gas reserves are mainly accumulated in the litharenite and feldspathic litharenite of braided river delta facies in the Cretaceous Bashijiqi Formation.

塔里木盆地库车坳陷北部的克拉2气田的天然气主要储集于白垩系巴什基奇克组辫状河三角洲沉积的岩屑砂岩、长石岩屑砂岩中，储层孔隙发育，连通性好，以受溶蚀作用改造扩大的粒间孔隙为主。

The analysis of group component, stable carbon isotopic compositions and biomarker, and the geochemical characteristics of the oil and gas show that the oil comes from the Palaeogene and the oil reservoir is new bed-generating and old bed-storing; the gas comes from Carboniferous-Permian and the gas reservoir is old bed-generating and new bed-storing.

通过对油气族组成、稳定碳同位素组成及生物标志化合物进行油气地球化学研究，认为东濮凹陷三叠系砂岩裂缝性油藏原油来源于古近系，油藏类型为新生古储式；天然气来源于石炭-二叠系，气藏类型为古生新储式。

Therefore, it is one of the most promising and important fields for exploration in the 21st century.

因此，致密砂岩储层是21世纪最有希望的重要天然气勘探领域之一。

Secondly, study on bleaching of sandstone based on field characteristics, petrography, geochemistry and compared with other sandstone related, combined with geological setting of gas seepage in the area, reveals that natural gas leakage is responsible for bleaching of the sandstone on top of Yan\'an formation. The bleaching resulted from interaction between the reductive fluid and the rock. At the same time the bleaching suggests that the northeast of basin has experienced large scale gas seepage.

在此基础上，通过漂白砂岩野外露头地质特征、岩石学、地球化学以及相关砂岩的对比研究，结合研究区天然气逸散的地质背景，揭示砂岩漂白现象为上古生界天然气逸散过程中，还原性流体与岩石作用的结果，同时也表明其指示了天然气的大规模逸散作用。

Secondly, study on bleaching of sandstone based on field characteristics, petrography, geochemistry and compared with other sandstone related, combined with geological setting of gas seepage in the area, reveals that natural gas leakage is responsible for bleaching of the sandstone on top of Yanan formation. The bleaching resulted from interaction between the reductive fluid and the rock. At the same time the bleaching suggests that the northeast of basin has experienced large scale gas seepage.

在此基础上，通过漂白砂岩野外露头地质特征、岩石学、地球化学以及相关砂岩的对比研究，结合研究区天然气逸散的地质背景，揭示砂岩漂白现象为上古生界天然气逸散过程中，还原性流体与岩石作用的结果，同时也表明其指示了天然气的大规模逸散作用。

Tight gas sandstone takes a large proportion in all natural gas reserves in China. Understanding the tight gas sandstone correctly is the most important thing in the sand gas reservoir development.

在我国，致密含气砂岩中的天然气储量占全国天然气总储量的比例较大，而正确地认识致密含气砂岩，是开发好致密砂岩气藏的首要条件。

The gas hydrates are preserved in the pores and cracks of the siltstone layers sandwiched in the oil shale member of the Middle Jurassic Jiangcang Formation. The gas in the gas hydrates is dominated by heavy hydrocarbons, with the methane accounting up to 52%~68%.

通过对钻获天然气水合物样品的分析，以及对以往异常可燃气体涌出钻孔的测井曲线的重新解释和对比分析，初步确定天然气水合物赋存于中侏罗统江仓组油页岩段的细粉砂岩夹层内的孔隙和裂隙中。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。