川东北宣汉-达县地区储层预测技术

川东北宣汉-达县地区以构造圈闭为主要勘探对象,钻探成功率低,为此开展了以储层预测技术为主导的构造-岩性复合圈闭勘探.通过山区地震数据高分辨率采集、处理、储层沉积相研究、储层测井响应特征、储层物性特征及储层层位标定、地震相研究、储层地震预测方法研究,确立了研究区内的三大储层类型及各类储层的研究方法,提出了川东北复杂储层预测以野外地震资料高分辨率采集为基础、多种特殊处理手段相结合,并以沉积相研究为指导的综合性研究思路,为川东北宣汉-达县地区储层预测方法研究提供了指导性意见,为该地区复杂储层勘探的深入与突破打了坚实的基础.     

民国川西藏族教育“雇读制”现象述论

民国时期川西藏族教育中出现的“雇读制”现象起源于清末在川边实施改土归流的过程中,并经历了沉寂期、复苏期、高潮期和衰退期四个发展阶段。“雇读制”有集体雇读和个人雇读两种,受雇对象多是居住在当地的汉民子弟,雇读报酬一般是采用付藏洋、替徭役和供糌粑等方式,这种现象在川西藏族地区非常普遍。“雇读制”现象主要在川西藏族教育中盛行不仅有其深刻的社会政治、经济及文化等方面的原因,而且当时川西藏族教育的教学内容、教学水平以及学制系统等也产生了影响。     

川东北下三叠统飞仙关组裂缝测井识别与反演

裂缝性碳酸盐岩储层非均质性较强,单一应用某种测井资料对裂缝进行识别和评价往往满足不了精细描述的需要。经岩心观察与常规测井、成像测井资料对比,建立裂缝在测井资料上的识别特征和识别方法。利用深浅侧向电阻率(RLLD、RLLS)、补偿声波(AC)、补偿中子(CNL)、补偿密度(DEN)、自然伽马(GR)、无铀伽马(KTh)等测井响应特征与微电阻率扫描成像测井(FMI)图像特征进行裂缝识别,计算裂缝几何参数,评价裂缝有效性和发育程度,经实际对比应用,具有较好的效果。     

四川前陆盆地中西部须家河组成岩作用与成岩相

四川前陆盆地由于构造相对复杂,探讨不同构造带上成岩作用和成岩相差异对储层预测具有重要意义.在沉积相、铸体薄片观察和岩矿分析数据基础上,对各构造带上须家河组砂岩的成岩作用进行系统研究.得出逆冲推覆带前缘以压实作用和破裂作用为主;川西前渊坳陷带以压实和压溶作用为主;前陆斜坡和前陆隆起带压实作用相对较弱,绿泥石环边胶结作用和...     

Evaluating the reliability of microsatellite genotyping from low-quality DNA templates with a polynomial distribution model

Molecular studies using trace DNA, such as from museum specimens, ancient or forensic samples and samples obtained noninvasively, often have a common problem of low quality of DNA templates. Amplification errors, such as allelic dropout and false allele, may arise during polymerase chain reaction (PCR) using such samples. A mathematical model which treats homozygotes and heterozygotes discriminately has been developed to measure sample quality and compute the confidence level of using multipletube approaches. We use plucked hair samples collected from 26 individual Sichuan snub-nosed monkeys (Rhinopithecus roxel- lana) to test the model. In this case, a confidence level of 99% can be achieved by three positive PCRs. If the sample quality is very poor and requires many PCR replicates, an alternative multiplestep genotyping method is recommended. This model enables researchers to optimize experimental protocols through pilot studies and obtain reliable genetic information using noninvasive sampling method.     

Control of coupling among three major factors for formation of high-efficiency gas reservoir A case study on the oolitic beach gas reservoir in Feixianguan Formation in the northeast Sichuan Basin

Through a case study of the high-efficiency gas reservoir in Feixianguan Formation in the northeast Sichuan Basin, quantitative and semi-quantitative analyses of key elements such as hydrocarbon generation, migration and accumulation, and reservoir evolution as well as their interplay in the critical moment of reservoir formation controlled by the energy field were carried out, by means of numerical modeling of the energy field. It was found that the climax time for Permian hydrocarbon generation was Late Triassic-Early Jurassic and accumulation of oil and gas has resulted in large-scale paleoreservoirs in paleostructural traps in Feixianguan Formation, a process facilitated by fractures connecting the sources. The paleoreservoirs have been turned into high-efficiency gas kitchens due to pyrolysis, which resulted from deep burial at a temperature of 170-210℃ as induced by tremendously thick sedimentation in the foreland basin of Daba Mountain in Late Jurassic-Cretaceous period. Meanwhile, abundant acid gas like H2S produced from thermo-chemical sulfate reduction （TSR） at high temperatures leads to extensive dissolution of dolostone in the paleoreservoirs, which may in turn result in modification of the reservoirs and preservation of the reservoir rock porosity. The present distribution of gas reservoirs was ultimately determined in the processes of adjustment, cooling and decompression of the paleoreservoirs resulting from intense deformation in the front of Daba Mountain during the Himalayan orogeny.     

四川秀山早寒武世高肌虫新材料

本文记述了早寒武世沧浪铺阶一高肌虫新属Tanguangbiella(gen.nov.),标本产于川东南秀山溶溪剖面下寒武统天河板组中部。新属以壳体巨大,具纺缍形前腹瘤、准生长线及缘膜构造为特征,其主要特征接近于高肌虫类,而部分特征也和介形类相似,加之标本稀少,故暂置于高肌虫目。     

东汉墓碑文兴盛的社会文化背景

东汉墓碑文,就其文体性质而言,是一种饰终礼文,它与东汉丧葬制度、丧葬礼俗紧密联系在一起,是崇儒重孝兴礼文的产物.东汉墓碑文,大多非朝廷诏立,这也是东汉后期王室衰弱的反映.自然,墓碑文乃铭刻于碑石之文,碑石不易坏朽的特征也是墓碑文繁盛的重要原因.     

罗家坝巴人遗址与川东北旅游形象的再造

罗家坝巴人遗址的发现,为川东北区域旅游业的突破与发展提供了契机.要以旅游形象的塑造为中心,品牌升级为目的,以强大的和针对市场的旅游学信息流,影响现实的和潜在的旅游者的选择心理,走超越式发展的道路.     

Soil Erosion Spatial Distribution Character of Sloping Field in the Sichuan Hilly Basin： Taking a Cultivated Slope in Neijiang as Example

0IntroductionNeijiang City locates in the south of The SichuanHilly Basin.The Sichuan Hilly Basin is underlainby horizontally bedded Mesozoic mudstones,siltstonesand sandstones.Purple soils developed on these rapidlyweathering rocks are widely distributed across the basin.According to second state soil erosion surveys based onremote sensing,the soil erosion rates in local area aretypicallyinthe range of3000-5000t·km-2·a-1[1,2].Inthe Sichuan Hilly Basin,one sloping field may is com-pose…