国内层状盐岩具有夹层多、不溶物含量高等特点,现有造腔软件不能很好地模拟国内层状盐岩水溶造腔过程。基于流体力学和化学动力学等理论,建立能够描述盐岩造腔过程的数学模型,并提出了夹层垮塌判据。结合国内层状盐岩水溶造腔工艺特征,开发出能模拟含夹层盐岩水溶造腔的软件SaltCavern Builder V1.0。该软件可模拟纯盐岩、多夹层盐岩的水溶造腔过程,能较好地反映出造腔方案在现场造腔过程中每个阶段的实施效果。通过大尺寸型盐造腔相似试验,模拟无夹层和含单一夹层的腔体形状扩展过程。基于相似理论基础,在现场造腔工艺条件下,造腔软件模拟出的结果与试验得到的结果接近,验证了该软件的实用性。

Multi-interlayer and large amount of unsolvable materials are the China’s salt rock’s specialties, so that the current software is not able to simulate the process that how domestic layered salt rock cavity built clearly .By using the theory of hydrodynamics and chemical kinetics, a mathematical model which has excellent ability to describe the cavity building process of salt rock, and a criterion of interlayer collapse are proposed. Then by combining the specificity of the domestic washing techniques , an improved simulation software:Salt Cavern Builder V1.0 is developed. This software has the ability to simulate the cavity building process of pure salt rock and multi-layered salt rock. This software has outstanding capability to present the result in every step for designing cavity-building scheme. By testing the process of similar cavity-building experiments for large-size molded salt rock, the cavity-expansion processes for both none-layered and simple-layered salt rock

Culebra12D是Culebra区块的一口大位移定向井，二开井段为Φ406.4mm大尺寸长裸眼大位移井段，由于大尺寸井钻速与排量不匹配，导致岩屑携带不及时，斜井段形成了岩屑床；长裸眼井段浸泡时间长，导致井壁稳定性差和粘性加大；钻至6237ft时卡钻。分析并总结此次大尺寸井粘吸卡钻的特点及处理工艺。为该地区其他大尺寸井顺利作业提供参考。

Culebra12D is an extended reach directional well in Culebra block, the second section of it is a long bore well withΦ406.4mm oversized and extended reach. Because the displacement of the well doesn''t meet the drilling speed, which results in cuttings cannot be carried out in time, crooked section has been formed cutting bed. Bore well was soaked for a long time, which increased the wall instability and viscosity and finally lead to the stuck of the drilling pipe when MD reached 6237ft. The characteristics of stuck and its solutions are analyzed and summarized in this paper to make reference for the other operation of oversized wells.

SIFT算法在仿射变换、噪声、一定程度的光照条件下具有良好的匹配性能，星上宽波段相机成像尺寸都非常大，超大尺寸图像直接利用SIFT算法，在构建高斯金字塔时空间占用大，同时导致计算用时长。通过研究仿射变换矩阵，提出可以通过计算超大尺寸图像的降采样图像之间的配准系数间接获取超大尺寸图像的配准系数的方法。经过实验验证，具有一定的可行性，对于图像配准从空间上减少计算量从而节约计算时间具有一定指导意义。

SIFT algorithm has a good matching performance under the conditions of affine transformation,noise and certain illumination. Since imaging size of the broadband camera on satellite is always oversized,if the oversized image is directly han?dled with SIFT algorithm,a big space will be occupied and a long computing time will be spended when building a Gaussian pyramid. By going into the affine transformation matrix,a method of calculating the matching coefficient between the downsam?ple images of oversized images to indirectly get the matching coefficient of the oversized images is proposed. The experimental re?sult indicates that this method is feasible. As for the image registration,it has a certain guiding significance for saving the com?putation time by reducing space occupation.

采用落锤冲击试验法测试了X100螺旋埋弧焊管焊接接头的低温冲击韧性,并进行了断口特征及微观组织分析。结果表明,沿管壁厚度方向的冲击韧性变化不明显;焊接接头的冲击韧性呈现母材冲击韧性最高,约是焊缝和热影响区的1倍,焊缝略高于热影响区;母材韧窝尺寸大且深,焊缝韧窝尺寸均匀但较浅,焊接热影响区以小尺寸韧窝为主,含少量大尺寸韧窝;焊缝和粗晶区的大尺寸条状或棒状M-A岛使冲击韧性下降。

In this paper,the impact toughness of X100 SAWH pipe welded joint was tested by using drop weight tear test(DWTT) method at low temperature,and the fracture feature and microstructure were analyzed. The results showed that the impact toughness along wall thickness does not change obviously. The impact toughness changes greatly from weld,heat affected zone to base metal,and the impact toughness of base metal is the highest about one time compared to those of the weld and heat affected zone,and the impact toughness of weld is slightly higher than that of heat affected zone. The fracture feature displays large and deep size dimple in base metal,uniform and shallow size dimples in weld,and mainly to the small size dimple with a small amount of the large size dimple in heat affected zone. The large size bar or round M-A island make impact toughness decrease.

石墨烯作为一种二维sp2杂化碳的同素异形体,具有优良的电学、光学、热学及力学等性质.产业化应用石墨烯要求其具有大的尺寸且性质均一.化学气相沉积法(CVD)的出现为制备大尺寸、高质量的石墨烯提供了可能.本文结合近几年CVD法制备石墨烯的研究进展,综述了影响大尺寸、单晶石墨烯制备的工艺参数,包括衬底选择与预处理、碳源与辅助气体流量调控、腔体温度和压力控制、沉积时间以及降温速率设定等.最后展望了制备大尺寸单晶石墨烯的研究方向.

Graphene, as a two-dimensional sp2 hybridization allotropicity of carbon element, possesses unique properties of electricity, photology, thermology and mechanics. For industrialization, graphene possessing large dimension and homogeneous property is required. It can be prepared by chemical vapor deposition technology. In this paper, based on the progress of graphene research this year, we summarize the influence factors of graphene preparation, including substrate selection and preprocessing, carbon source and assist gas flow control, chamber temperature, pressure control, cooling rate, and deposition time setting, etc. Finally, we outlook the research direction of preparing the large-dimensional and single crystal graphenes.