储层预测技术在油田开发中的应用

本文对储层预测的作用进行分析,探讨储层预测的相关程序及思路,最后提出储层预测的应用过程。     

运用粒子群算法求解若尔盖湿地含水层参数

以潜水完整井流理论为基础,依据求解潜水含水层参数的Theis模型近似式,研究了基于抽水试验的粒子群算法确定孔隙潜水含水层导水系数T、渗透系数K、给水度μ等参数的方法和途径。计算结果表明,粒子群算法不仅可行,而且求解精度高,收敛速度比其他方法快,是一种值得在实际中推广应用的求解含水层参数的方法。     

歧北凹陷东营组地震地层学分析

应用高分辨率三维地震资料,对黄骅蚴陷中区岐北凹陷东营组进行地震地层学分析,通过该区地震反射终止类型、地震相等的研究,识别三级层序界面,并将东营组划分为四个（SQEd^s。、SQEd^x、SQEd2、SQEd3）三级层序,并总结出歧北凹陷东营组的缓坡破折型和断裂陡坡型两种层序构成样式。     

微合金化元素Sn对Al-Mg-Si合金高温时效强化相析出路径的改变

研究了Sn(0.2%,质量分数)的添加对一种富Mg的Al-Mg-Si合金经历不同时间的自然时效后在250℃下人工时效过程中的时效硬化行为的影响,并利用TEM观察揭示了其微观机理。结果表明,在Al-Mg-Si合金中添加微量Sn(0.2%)可以改变合金250℃人工时效的强化相析出路径:当直接进行人工时效时,析出相主要为b"相;当进行自然时效+人工时效处理时,随着自然时效时间的延长,b"相的比例不增反降,而b'相的比例不降反增,但最终b"相的比例仍高于b'相的比例。Sn对强化相析出路径的改变,可以明显提高合金高温人工时效的硬化能力。Sn的添加提高了基体中有效的Si浓度,从而改变了不含Sn合金的强化相析出路径。     

Recognition and depiction of special geologic bodies of Member 3 of Dongying Formation in Littoral Slope Zone, Qikou Sag

The purpose of this study is to forecast the profitable oil and gas reservoir, which is the key of finding hydrocarbon, based on the conception of special geologic bodies. With the guiding methodology of the research thinking of integration of point-line-surface by using the methods and techniques of logging, seismic, seismic attribute, and logging constrained inversion in 3D data volume, the special geologic bodies of Member 3 of Dongying Formation in Littoral Slope Zone of Qikou Sag, which has important hydrocarbon exploration potential, are recognized and described under the constraint of sequence stratigraphic framework. As a result, the developed scale, geometric shape and space distribution feature of the special geologic bodies are forecasted; the inner structure and sequence structure patterns of the geologic bodies are also ascertained. From the lowstand system tract (LST) and lacustrine expanding system tract (EST) to the highstand system tract (HST), the geologic bodies have evolved from relative centralization of lake basin reducing period to three relative dispersive isolated parts of broad lake basin period. According to the relevance and regularity of the development of geologic bodies, the conclusions can be obtained that three types of potential profitable reservoir traps, including the lithologic lens traps, lithologic updip pinchout traps and structural-lithologic composite traps, are forecasted. In addition, scientific basis for further hydrocarbon exploration in new area (few-well area and no-well area) is offered in the guidance of sequence stratigraphic model.     

Recognition and depiction of special geologic bodies of Member 3 of Dongying Formation in Littoral Slope Zone, Qikou Sag

The purpose of this study is to forecast the profitable oil and gas reservoir,which is the key of finding hydrocarbon,based on the conception of special geologic bodies.With the guiding methodology of the research thinking of integration of point-line-surface by using the methods and techniques of logging,seismic,seismic attribute,and logging constrained inversion in 3D data volume,the special geologic bodies of Member 3 of Dongying Formation in Littoral Slope Zone of Qikou Sag,which has important hydrocarb...     

Na3AlF6熔盐中电解制备Al-Sc-Zr合金及其晶粒尺寸分析

在Na3AlF6-4%MgF2-2?F2-Sc2O3-ZrO2熔盐体系中,电解制备Al-Sc-Zr合金。考察氧化物添加量及电解时间对合金元素含量的影响。并利用光学显微镜、Image J图像分析软件,研究钪锆含量对合金晶粒尺寸的影响。结果表明,通过控制电解条件,制备出钪含量0.186%~0.526%,锆含量0.116%~0.556%的Al-Sc-Zr合金。合金晶粒尺寸随合金中钪锆含量比值(wSc/wZr)的增大而减小。通过扫描电镜及能谱分析发现铝钪锆合金中的初生相为Al3(Sc,Zr)粒子,粒子中的Sc、Zr原子数与合金中的钪、锆含量有关,不同Sc、Zr原子比例的Al3(Sc,Zr)粒子对合金组织细化效果不同。     

川东北元坝东部须四段裂缝型致密砂岩储层预测

裂缝型致密砂岩储层是四川盆地三叠系须家河组重要的储层类型,由于该类储层具有低孔、低渗、强非均质性特征,其储层的预测是川东北油气勘探开发的重点和难点。为准确预测该类储层的分布,提出了“相控找砂,砂中找缝”的“两步法”技术思路,针对目标靶区,综合地质地震资料开展砂体展布及裂缝预测。该方法利用地震多属性综合与相控地震反演技术,定性和定量预测有利砂体分布区;结合叠前叠后裂缝检测技术、基于断-缝联系法和储-盖差异法的断裂-裂缝有效性评价技术,评价断裂-裂缝发育带;最终综合有利砂体和裂缝分布区圈定优质储层发育带。预测结果经后期钻井证实可靠性较高,表明该技术思路对裂缝型致密储层预测具有借鉴意义。     

郎川公路附近湿地地下水文特征研究

郎木寺至川主寺公路改建工程通过我国最大的高原湿地-若尔盖湿地.公路建设会对湿地地下水流动产生阻隔作用,为保护湿地生态环境需要掌握公路附近湿地的地下水文特征.为此,在公路两侧500 m范围内,通过打抽水井和布置观测孔的方式,收集资料和实地调查,并进行分析.通过在典型地区进行抽水试验获取公路附近湿地地下水文特征资料,这在国内尚属首次.     

基于地震响应分析的相控反演技术在生物礁滩储层预测中的应用

川东五百梯地区长兴组生物礁滩储层受开江—梁平海槽沉积相带控制,具有岩性物性复杂、非均质性强的特点,是制约该区高效勘探开发的主要因素。针对五百梯地区井位分布不均匀、相控明显的问题,依据地质认识结合地震特征刻画地震有利相带,随后通过地震相带进行相控插值建模,最后开展储层预测,该方法有别于传统插值方式,更符合地质规律。其技术思路为：首先,通过地震反射特征分析以及钻井资料,明确礁滩发育的地震反射模式;随后,利用生物礁滩发育模式及井资料优选敏感属性并刻画出礁滩发育有利相带;最后,利用相带刻画结果作为相控约束条件构建低频模型并采用分频反演方法进行储层预测。由基于相控分频反演的储层预测结果可知,储层主要发育在台缘礁相带、二排礁相带以及礁后滩相带,对应为古地貌较高位置,符合地质规律,为五百梯地区长兴组气藏高效开发奠定良好基础。