低压低渗气藏钻探过程中的保护方案

针对鄂尔多斯塔巴庙区块低压低渗气藏物理特性复杂的情况，推荐一套切实可行的气层保护方案。即实行全面钻井液监控；采用欠平衡钻井技术；储层保护前期研究；采用与地层流体配伍性好的阳离子钻井液体系；降低钻井完井液的滤失量，API滤失量小于5mL、高温高压滤失量小于15mL、固相含量小于8％、含砂量小于0．3％；根据储层裂缝的宽度和走向使用保护剂；对裸眼完钻的气层利用洗井清除井壁附近的污染带，恢复储层原始渗透率；固井作业防止气窜；采用具有抑制地层水敏、速敏保护气层的优质射孔液；水力压裂优化压裂设计，严格压裂施工。总之，气层保护技术是一个系统工程，任何一个环节的问题，都将对气层产生伤害．因此需加强气层保护研究，做到在钻开气层到投产的每道工序都采取积极有效的气层保护措施。     

特低渗油藏水平井布井方式研究

本文以西峰油田董志区长8油藏为例，运用数值模拟技术，研究了水平井组合方式及其井网形式。研究结果表明，水平井是提高特低渗油藏开发效果的有效途径。结合长庆特低渗储层吸水性能好的特点，认为采用直井注水，水平段走向垂直于储层最大主应力方位的水平井采油的井网组合开发效果最佳。     

宣钢烧结生产配加钢渣的工业试验

总结了宣钢烧结配配加钢渣生产不同碱度烧结矿的工业生产试验，提出了配加钢渣可强化全精粉烧结。     

覆膜滤料的滤尘性能测试方法研究

由于覆膜滤料的结构和性能有别于普通滤料，因而普通滤料的滤尘性能测试方法不完全适用于覆滤料。本文作者在总结实践经验的基础上，提出了在覆膜滤料的滤尘性能测试中应注意的一些问题和应增加的测试项目。     

川中低渗油气田开采新工艺应用评价

川中磨溪气田是一个含边水、低渗、含硫的视孔隙性的整装气田,强腐蚀性一直以来制约着天然气的生产;而油藏具有特低孔渗、裂缝性和强烈非均质性,一般采用衰竭式开采,压力降低较快,采出难度增加,采用挤凝析油解堵、小泵深抽、玻璃钢油管防腐、渗吸注水二次采油、化学清防蜡等一系列配套的新工艺、新技术和工具后,较大地提高了原油采收率,增产效果显著.     

克拉2气田储层岩石的应力敏感性及其对生产动态的影响

克拉2气田是一个异常高压气藏，压力系数在2．0以上。在衰竭式开采条件下，其地层压力降幅可为普通气藏地层压力降幅的3倍以上，因此研究储层岩石应力敏感性及其对生产动态的影响意义重大。研究得出，岩石的应力敏感性特征主要有：岩石物性对应力的敏感性总体上不大，其中以孔隙度最小，渗透率次之，压缩系数最大；岩石物性随地层压力的下降而下降；在同一地层压降下．岩石物性下降幅度不是渗透率的连续函数，而是与渗透率分布范围有关，高渗透率范围，岩石物性下降幅度小，低渗透率范围，岩石物性下降幅度大。研究得出，克拉2气田岩石的应力敏感性对其生产动态的影响较小。     

砂岩储层渗透率表征方法探讨

渗透率是反映储层渗流能力的重要参数，目前对于单一储层的渗透率表征方法，通常是在岩心分析渗透率或测井解释渗透率的基础上进行厚度加权算术平均。这种方法对于均质的储层来说是适用的，但对于非均质严重的储层，不能准确反映该储层的实际渗流能力。本文提出一种应用可动流体体积权衡表征渗透率的方法，经实际资料验证，能较好地反映储层的实际渗透能力。     

Water and salt permeability of reinforcement polymer‐gel composite membrane

The charged mosaic polymer membrane (CMM) without reinforcement and the composite charged mosaic polymer membrane (CCMM) with reinforcement were investigated in terms of salt and water transport (permeability). The composite charged mosaic polymer membrane (CCMM) with reinforcement showed a unique transport behavior such as preferential material transport L_p and ω. Water permeability coefficient, L_p and salt permeability coefficient, ω were estimated by taking account of active layer thickness of composite polymer gel. The L_p and ω values of CCMM with reinforcement were larger than those of CMM without reinforcement. On the other hand, the reflection coefficient of CCMM, σ, showed negative value, which suggested preferential material transport to solvent transport. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008     

Influence of Membrane Stresses on Postbuckling of Rectangular Plates Using a Nonlinear Elastic 3-D Cosserat Brick Element

This paper has two main objectives. The first is to examine the influence of membrane stresses on postbuckled deformations of nonlinear elastic isotropic rectangular plates. The second is to further examine the accuracy of a new 3-D Cosserat eight noded brick element (Nadler and Rubin in Int J Solids Struct 40: 4585–4614, 2003) which was developed within the context of the theory of a Cosserat point. The equations of the Cosserat element include both material and geometric nonlinearities. A number of example problems are considered which examine predictions of the Cosserat element for beams and plates and comparison has been made with results from the commercial codes ANSYS and ADINA. Also, the approximate nonlinear postbuckling solution described in Timoshenko and Gere (Theory of elastic stability, Mc Graw-Hill, New York) is shown to be more limited than originally expected. These results suggest that the Cosserat element is robust, can perform well under extreme conditions and is capable of modeling combinations of three-dimensional bodies with attached thin structures.     

Combustion of bulk density powder mixtures in a coflow of nitrogen gas: 3. The Ti-(Ti + 0.5C) layered system

Explored is the filtration combustion in Ti-(Ti + 0.5C) layered powder systems in a coflow of nitrogen gas. The presence/absence of nitrogen coflow through the layered system was found to drastically affect the character of wave propagation and structure/properties of product. The obtained data can be regarded as a basis for fabrication of new layered and composite materials in the mode of dynamic filtration combustion.