印支期泸州-开江古隆起位于四川盆地东部，由于其顶部广泛发育的岩溶不整合面是四川盆地重要的油气储集层而受到广泛关注，但是关于该古隆起的形成时间及成因机制长期存在很大分歧，既影响了对印支期上扬子地区构造演化的认识，也不利于四川盆地油气勘探工作.基于地震、钻井和野外露头资料，详细分析泸州-开江古隆起顶部不整合面，结合区域构造事件、全球海平面变化等资料，利用前陆盆地系统演化模型对泸州-开江古隆起的演化过程及动力机制进行系统分析.认为泸州-开江古隆起的形成及发展期在晚三叠世卡尼期-诺利期，消亡于瑞替期，该古隆起是晚三叠世龙门山前陆盆地系统的一个组成单元——前缘隆起，其演化过程主要受控于晚三叠世龙门山造山楔的构造负载和前陆盆地沉积物的沉积负载.晚三叠世，在华北板块和羌塘地体共同向扬子陆块西缘汇聚的构造背景下，扬子陆块西缘发生NW-SE向地壳缩短，导致龙门山造山楔向扬子克拉通的逆冲推覆作用，控制了泸州-开江古隆起的形成与演化.

基于沧东凹陷地震剖面和新生代残留盆地结构的详细分析,利用平衡剖面技术,结合沉积体系演变特征,系统研究了沧东凹陷的原型盆地构造演化过程.结果表明沧东凹陷新生代经历了坳陷期(孔三段-孔一下亚段沉积期)、断陷期(孔一上亚段-东营组沉积期)和坳陷期(馆陶组-平原组沉积期)3 个演化阶段.在断陷期,盆地演化主要受沧东和徐西两条边界断层的控制,盆地伸展作用具有逐渐减弱的特点,并且边界断层伸展作用具有自北西向南东迁移的特点.沧东凹陷新生代的构造演化受控于岩石圈上部简单剪切伸展和岩石圈下部纯剪切伸展的共同作用.

1.目的 随着四川盆地油气勘探目标向隐蔽性地质目标转移,对地震资料保真度和分辨率提出更高要求.地震检波器是油气地震勘探关键设备之一,直接关系到地震资料品质的优劣.理想条件下,检波器接收到的信号反映了表土真实的机械振动情况,但实际的地震波接收过程受检波器自身性能及检波器表土耦合问题的制约,会影响接收到的地震波动力学特征信号.因此,笔者基于外界噪声投射原理、检波器与表土耦合响应影响因子分析,提出了四川盆地地震采集检波器"体耦合"埋置技术.

The uplift mechanism of the Cenozoic Longmenshan has two endmember modes: upper crustal shortening and lower crustal flow. The two modes will cause different tectonic deformation responses in the Sichuan basin and form different basinmountain systems. In order to determine the tectonic deformation characteristics of the basin-mountain system in the southern Longmenshan and the frontal area and its dynamic indicative significance, seven sandstone samples from Well Ledi 1 in the southern Longmenshan frontal area were analyzed by low-temperature thermochronology（AFT and AHe） to constrain the exhumation characteristics of the front area. The results show that the shallow strata in the frontal area of the southern Longmenshan have experienced a rapid exhumation stage（～500 to 700 m/Ma） of ～10 to 11 Ma since the Miocene（～21 Ma）.This rapid exhumation stage is synchronized with the rapid exhumation time revealed by the predecessors in the southern Longmenshan. Combined with regional geological data, it is believed that the thrust and nappe from the southern Longmenshan to the southeast at ～10 to 11 Ma, caused the tectonic stress to be transferred to the basin through the multi-layered detachment layers in the southwestern Sichuan basin, resulting in large-scale tectonic deformation and rapid exhumation in the front area. This knowledge indicates the uplift mechanism of the southern Longmenshan is the upper crustal shortening model.

There exist divergent views about the Indosinian tectonic nature of basin and the evolution of basin-range pattern in the southwest margin of the Yangtze block. Detrital zircon U-Pb dating and detrital provenance analysis of sandstone samples from the Upper Triassic-Lower Jurassic of Xiangyun Section in the western Chuxiong basin were carried out. The results show that the detrital sources of the Upper Triassic Yunnanyi Formation and Luojiadashan Formation are mainly from the Middle-Lower Triassic and Permian in the Upper Yangtze region. The detrital sources of the Upper Triassic Baitutian Formation and the Lower Jurassic Fengjiahe Formation are mainly from the Songpan-Ganzi terrane and Kangdian ancient land. Combined with the sedimentary environment evolution and regional geological setting, it is considered that the orogeny is relatively weak during the earlier Late Triassic, and Chuxiong basin is an underfilled basin, whose clastic source supply is insufficient. From the later Late Triassic to Early Jurassic, the tectonic evolution of Chuxiong basin was controlled by the thrust nappe of Ailaoshan orogenic belt,but the sedimentary filling process of Chuxiong basin was mainly controlled by the rapid rise of Songpan-Ganzi orogenic belt.

五维规则化技术是目前室内处理常用的空间采样不均消除手段.但是,对于浅层致密气这类岩性储层,傅里叶变换造成的混波现象导致五维规则化技术不能满足其高保真处理的要求.以川中地区沙溪庙组资料为例,对五维规则化流程进行优化,提出了一种高保真规则化技术.研究结果表明,在针对浅层致密气勘探的资料处理中,高保真规则化技术能在提高信噪比的同时,更好地达到保真的要求,有利于浅层陆相致密气解释工作的开展.

The earth surface in the Sichuan Basin and its periphery is geologically complex, which causes low signal-to-noise ratio of seismic data, poor imaging quality of seismic profiles and great difficulty in data acquisition. In order to ensure high-quality operation of the seismic survey project in the complex surface of the Sichuan Basin, researchers have been working continuously to solve the bottleneck problems in the seismic acquisition technology for complex surface in recent years. In addition, the upgrading of acquisition technology and operation capacity is promoted effectively by means of technical innovation, and a series of key technologies for seismic acquisition are developed. And the following application results of this series of technologies are obtained. First, the optimization design technology of the geometry based on wave equation forward modeling and actual data, combined with prestack migration imaging can show the influence of different acquisition schemes on the prestack imaging effect of complex targets more directly, which makes the seismic acquisition scheme more economic and effective. Second, by extracting landform risks and surface obstacle information intelligently, combined with field fine reconnaissance, landform risk identification and hierarchical evaluation and indoors intelligent optimization of well-shot physical point deployment are conducted, and thus the GIS+ intelligent deployment technology of shot point in complex surface is formed, which effectively reduces the risks of operation. Third, the cavity excitation technology which reduces the initial pressure of explosive pulse and extends the explosive action time of explosives can increase the conversion rate of rock excitation energy into effective elastic wave energy and the reflected energy and improve the quality of seismic single shot data. Fourth, combination of the automatic evaluation technology for field seismic data acquired in mountainous regions and the KL-GMLiveQC1.0 software can improve the evaluation efficiency, reduce the evaluation cost and ensure the high-quality acquisition of seismic data in complex surface. In conclusion, this series of key seismic acquisition technologies greatly improve the signal-to-noise ratio and resolution of seismic data, lay a foundation for fine reservoir prediction, and ensure the continuous important breakthrough of three-dimensional natural gas exploration and development in the gas fields of marine carbonate rock, shale gas, volcanic rock and shallow tight sandstone gas in the Sichuan Basin.

基于地表露头、钻井资料,对四川盆地上三叠统黑色泥页岩的时空分布特征进行了详细的分析.在此基础上,对黑色泥页岩所记录的前陆盆地系统演化过程进行了研究.四川盆地上三叠统黑色泥页岩主要发育在龙门山冲断带的前缘地区,反映了晚三叠世龙门山造山楔的强烈逆冲推覆控制前陆盆地的沉积充填过程.晚三叠世,龙门山造山楔经历了三次较为强烈的造山作用,导致前渊地区快速沉降,形成欠补偿前陆盆地,为须一段、须三段和须五段三套黑色泥页岩的沉积提供了有利条件.四川盆地上三叠统须一段、须三段和须五段黑色泥页岩依次向南东迁移,表明晚三叠世龙门山造山楔具有显著地向南东推覆的特征.

作为川滇菱形活动块体东边界的重要组成部分的小江断裂带,按其几何特征,可分为北段、中段和南段,中段又分为东西两支,沧溪-清水海断裂是其西支的重要组成之一.在野外区域地质调查的基础上,利用前人的资料,结合现代遥感技术,对小江断裂带中段西支的沧溪-清水海次级断裂的更新世活动性进行探讨,取得以下初步认识:①通过沧溪盆地中的冲积扇和甸沙盆地中的四甲河支流位移方向对比,沧溪-清水海断裂在晚更新世以来的活动主要表现为明显的左旋运动;②通过对沧溪盆地中的冲积扇和甸沙盆地中的四甲河支流位移速率的计算,将该断层自晚更新世以来的位移速率应限定在3.3～12 mm/a,其中断层北端的速率要稍微略高于断层的南端.

川西南部地区栖霞组具有较好的勘探开发潜力,栖霞组储层分为白云岩储层与灰岩储层,白云岩储层主要发育于栖霞组二段,灰岩储层主要发育于栖霞组一段.为解决该区储层地震识别存在多解性的难题,结合测井资料、高分辨率地震资料开展了地震相识别以及不同储层发育类型的地震响应特征模式研究.结果表明,该区可划分出5种储层发育类型,对应5类地震相:Ⅰ类地震相与栖霞组二段中上部发育储层相对应;Ⅱ类地震相与栖霞组二段中下部发育储层相对应;Ⅲ类地震相与栖霞组一段中上部发育储层相对应;Ⅳ类地震相与栖霞组一段中下部发育储层相对应;Ⅴ类地震相与栖霞组储层不发育相对应.研究结果取得了良好的应用效果.

针对卧式高压往复泵在生产运行中存在的突出问题,研究了柱塞填料密封的特点,找出了填料泄漏的主要原因,确定了改造方案,对其进行了成功改造.并将填料密封的改造方法推广于立式三柱塞往复泵.

结合野外资料,利用GIS技术,提取了绵远河流域的坡度、地形起伏度等地貌参数,对绵远河流域的构造地貌进行了分析;以汶川地震重灾区绵远河流域的文家沟滑坡、泥石流为例,对该区汶川地震驱动的构造抬升与滑坡、泥石流的表面侵蚀过程进行研究.研究表明,文家淘地处汶川地震震中区,映秀-北川断裂带(主断裂带)在其北西侧约3.6km的地方切过,为引发滑坡提供了构造条件;地震之前,文家沟近百年内未发生过滑坡、崩塌;地震之后,触发了体积约为2 750 ×104m3的初始滑坡体,最终滑坡体堆积物多达5 000×104 m3,是汶川地震中的第二大滑坡;从2008年9月至2010年10月,文家沟先后发生了5次规模较大的泥石流灾害,累积泥石流量达557×104 m3,表明约有11％的震后滑坡转化为泥石流;汶川地震造成了文家沟约1 952.5×104 m3的同震抬升量,而震后滑坡体堆积量约为5 000×104 m3,说明震后的滑坡量远大于同震抬升量,山体平均海拔被降低.

With the development of EILog express imaging logging equipment,MPAL6620 multipoles acoustic logging instrument emerges as the time requires,the article analyzes some of the representative issues and troubleshooting when MPAL6620 is used in the field.

高压柱塞泵泄漏,分析填料泄漏特点,找出泄漏原因,改进填料函和填料结构,选择戈尔(GFO纤维)填料。

The imported stainless steel strip used in granulator was the main components,which was very easy to crack and deformation after a year use.This steel strup was expensive and difficult to repair.According to the analysis on crack,the repair methods and maintenance techniques were proposed.

Noise muffling of seismic records is a significant step in seismic data processing and it is of great importance in processing and interpreting seismic data subsequently.Based on the analysis of principles of a traditional total variation image denoising model,an improved total variation approach to image denoising with diffusion tensor appended was proposed.Through enhancing the anisotropic filtering of diffusion terms along the orientation of stratigraphic textures in the total variation model,this approach could consistently strengthen the formation continuity along the orientation and control the diffusion state perpendicular to stratigraphic bedding so as to preserve the edge structure information.The actual result of this approach in application to some seismic data from western Sichuan showed that it could effectively remove the noise in seismic images,enhance the continuity of seismic events and increase the signal to noise ratio of seismic data.