您现在的位置: 首页> 研究主题> 近井地带

近井地带

近井地带的相关文献在1990年到2022年内共计176篇,主要集中在石油、天然气工业、化学、化学工业 等领域,其中期刊论文106篇、会议论文5篇、专利文献68253篇;相关期刊51种,包括石油天然气学报、石油石化节能、世界石油工业等; 相关会议4种,包括吉林省第五届科学技术学术年会、中国石油学会第四届青年学术年会、五省(市/区)第十九届稠油开采技术研讨会 等;近井地带的相关文献由416位作者贡献,包括薛新生、张健、叶仲斌等。

近井地带—发文量

期刊论文>

论文:106 占比:0.16%

会议论文>

论文:5 占比:0.01%

专利文献>

论文:68253 占比:99.84%

总计:68364篇

近井地带—发文趋势图

近井地带

-研究学者

  • 薛新生
  • 张健
  • 叶仲斌
  • 舒政
  • 赵文森
  • 杨光
  • 姜伟
  • 赖南君
  • 陈洪
  • 施雷庭
  • 期刊论文
  • 会议论文
  • 专利文献

搜索

排序:

年份

作者

    • 王力智; 董长银; 何海峰; 曹庆平; 宋雅君
    • 摘要: 针对非均相复合驱油田开发出现的聚合物堵塞问题,利用非均相复合驱介质堵塞模拟实验装置,使用粒径中值0.15 mm地层砂和粒径0.6~1.2 mm砾石,分别采用清水、增黏基液、聚合物与PPG复配液等3种流体以及防砂油井中的聚合物堵塞物样品,开展了聚合物堵塞物对近井挡砂介质的堵塞模拟实验.结果 发现:砾石层内聚合物堵塞物明显趋向于沿高渗透带运移,受液体剪切携带会剥落小尺寸黏团,挤入深部砾石层孔喉中,阻碍了地层砂运移,从而加剧了砾石层的堵塞程度,导致总体渗透率下降,且堵塞程度与堵塞物含量呈正相关.研究结果表明,非均相复合驱砾石充填防砂井近井地带堵塞是聚合物原液、聚合物堵塞物及固相颗粒的物理化学复合堵塞的结果,需尽早采取解堵措施,防止堵塞程度进一步加剧.
    • 杨雪
    • 摘要: 为深化研究中原油田某区块凝析气藏提高采收率效果,以中原油田某区块沙三下低孔低渗凝析气藏为例,基于物质平衡方程和状态方程的理论支撑,通过PVT相态、物理模拟等室内实验,揭示了该气藏的衰竭开发规律,对该气藏低产无产原因深度剖析,认清目前现状.首次提出符合该区块凝析气藏地质特征的近井地带双向(产转注+生产井)解堵后注干气保压开采提高采收率开发方式,分别对注入端和采出端的天然岩心开展了注CO2解堵物理模拟实验,解堵后渗透率恢复分别为60.44%、63.15%,表明了注CO2解堵效果良好,在解堵的基础上,开展注干气保压岩心驱替实验.研究结果表明,凝析气藏一开始在原始地层压力41.19 MPa下注干气保压开采,凝析油采收率可达91.41%;衰竭至堵塞压力21.14 MPa再进行注干气保压开采,凝析油的采收率为44.28%.通过研究进一步明确了开发过程中因近井地带压力低于露点压力造成油水乳化堵塞的地层物理模型,为中原油田低渗致密凝析气藏的效益开发提供了技术支持.
    • 张远凯; 余先政
    • 摘要: 在油田注水开发时,地层水和沿流线方向突进的注入水在采油井近井地带混合.汇聚径向流使得注入水中的SO42-与地层水的Ba2+充分混合并生成BaSO4沉淀,导致近井地带地层结垢堵塞,影响油井正常生产.文中对采油井近井地带硫酸钡结垢模型进行研究,模拟了不同注水阶段时采油井近井地带的Ba2+浓度分布和BaSO4结垢量分布,对现场的防垢工作提供一定的理论支撑.
    • 马宏煜; 张春秋; 高树生; 叶礼友; 刘华勋; 熊伟; 史江龙; 王霖; 吴康; 祁青山
    • 摘要: Tight sandstone gas reservoirs commonly contain water, so liquid loading often appears near wellbores, leading to production decline and even shutdown of gas wells. Therefore, the study on the change of water saturation near wellbores is of great significance to understanding the water production mechanisms of gas wells. In this paper, a set of physical simulation experiment procedures of identifying the change of water saturation near wellbores was designed according to the principle of radial well seepage of gas wells, and the production performance after vertical well fracturing in gas reservoirs was simulated by connecting tight cores with a diameter of 10.5 cm, 3.8 cm and 2.5 cm in series in a descending order of distance. According to the depressurizing production mode of gas wells, tubes with small diameters of 20, 30, 40 and 50 μm were used to simulate gas well tubing to control the gas production rate. And the change of water saturation near wellbore in the process of depletion production and its influencing factors were investigated. Finally, combined with actual data of production wells, the water saturation and water production of gas wells near wellbores and in different zones were calculated at the above four different small diameters of tubes and the changes thereof were also analyzed. The following results were obtained. First, each gas production rate corresponds to a critical water saturation. When the initial water saturation is lower than the critical value, the formation water flowing near the wellbore and in the middle zone can be carried out along with the production of gas and no liquid loading is formed. Second, when the initial water saturation is higher than the critical value, a large amount of formation water migrating from the distal zones accumulates near the wellbore, and thus liquid loading occurs at the bottom hole. Third, when the initial water saturation is equal to the critical value, the higher the gas production rate is, the more easily liquid loading tends to form near the wellbore. Fourth, for the same water saturation, water production increases and recovery factor decreases with the increase of gas production rate. In conclusion, the cumulative water production chart of a gas well generated by the physical simulation experiment method proposed in this paper agrees well with the water production behavior of the corresponding gas well. The research results are conducive to the effective prediction of gas well water production and can be used as guidance for the reasonable gas well water control.%致密砂岩气藏普遍含水, 近井地带极易形成积液, 从而导致气井减产甚至停产, 因而研究近井地带含水饱和度变化规律对于认识气井产水机理具有重要的意义.为此, 根据气井径向渗流原理设计了一套近井地带储层含水饱和度变化物理模拟实验流程, 运用直径分别为10.5 cm、3.8 cm、2.5 cm的致密岩心由远及近串联以模拟气藏中直井压裂后的生产状况;基于气井降压生产方式, 分别用20μm、30μm、40μm、50μm的微管来模拟气井油管以控制产气量, 研究气藏衰竭开采过程中近井地带含水饱和度的变化及其影响因素, 结合现场生产井资料计算气井近井地带及不同区域、不同微管直径下的含水饱和度及产水量, 并分析其变化情况.研究结果表明: (1) 不同采气速率各自对应一个临界含水饱和度, 当原始含水饱和度低于临界值, 近井地带和中部区域流动的地层水会随气体的采出而携出, 近井地带不会产生积液; (2) 当原始含水饱和度高于临界值时, 由远端运移的地层水大量聚集在近井地带导致近井地带积液; (3) 含水饱和度相同时, 采气速率越大, 越容易导致近井地带积液; (4) 同一含水饱和度下, 采气速率越大, 产水越严重, 采收率越低.结论认为, 由物理模拟实验新方法计算得到的气井累计产水量图版与对应气井的产水动态具有较好的一致性, 该研究成果可以有效预测气井产水量, 对于气井采取合理的治水措施具有指导作用.
    • 李彦; 陈瑜; 刘美辰; 景宏; 支博; 李国强; 马挺
    • 摘要: 拟探究油藏注水井近井地带的微生物群落组成及不同营养刺激对微生物代谢和驱油过程的影响.利用高通量测序和荧光定量PCR技术考察不同时期水井返排液中微生物群落的组成与演替规律;探究不同时期返排液、不同营养类型和空气供给量对内源微生物激活效果的影响.表明:不同时期返排液的初始微生物群落组成存在较大差异,用同一种营养剂刺激后的核心微生物具有相似性,其中迪茨氏菌属、放线菌属等烃降解菌的激活程度与原油乳化效果密切相关;向注水近井地带补充空气能提高原油乳化效率,可作为激活内源微生物以提高原油采收率的重要措施;相对于16S rRNA、rhl AB、alk B基因的转录量, cyp153基因和pH更适合作为衡量内源微生物激活效果的指标.
    • 王姗姗; 张健; 朱玥珺; 薛新生
    • 摘要: 研究了利用小分子表面活性剂作为牺牲剂来降低聚合物在近井地带吸附量的方法,考察了小分子阳离子CA-1、小分子醇PEG10000和小分子阴离子木质素磺酸钠作为牺牲剂在石英砂上的吸附规律及其对聚合物静态吸附量的影响;利用岩心驱替实验研究了牺牲剂注入方式对聚合物动态吸附滞留量、注入压力及阻力系数的影响.实验结果表明,CA-1、PEG10000及木质素磺酸钠分别可以在50mg·L-1、1500 mg·L-1、5000 mg·L-1的浓度下使聚合物的静态吸附量分别降低40.5%,36.2%及30.5%.CA-1作为前置段塞注入后能够使聚合物动态吸附量降低30.1%,阻力系数降低了69.7%,能够满足降低聚合物在近井地带吸附滞留量及降低近井地带注入压力的要求,为确保配注量、使聚合物能够进入地层深部发挥驱油效果提供了一种便捷低成本方的方法.%The method of reducing the adsorption of polymer in the near wellbore zone by adding low molecular weight surfactant was studied. The adsorption law of low molecular weight cationic CA-1,alcohol PEG10000 and sodium lignosulphonate on quartzsand and the effect of sacrificial agent on polymer adsorption were studied by static adsorption experiment. The effect of injection methods on polymer dynamics,injection pressure as well as the resistance coefficient were investigated by coreflooding experiments. Experi-mental results proved that 50mg·L-1 CA-1、1500 mg·L-1 PEG10000 and 5000 mg·L-1 sodium lignosulfonate were able to re-duce static adsorption of polymer to 40. 5%,36. 2%and 30. 5%,respectively. The sacrificial agent-cationic surfactant CA-1 was screened,which could reduce the dynamic adsorption of polymer and the resistance coefficient to 30. 1%and 69. 7%,separately. Result proved that sacrificial CA-1 had the ability to reduce the adsorption quantity and lower injection pressure near the wellbore. The method provided a convenient and low cost method to ensure the injection rate of Bohai oilfield.
    • 张云普
    • 摘要: 大庆喇嘛甸油田超声波解堵技术取得阶段效果,截至5月2日,现场应用效果表明,措施初期单井日均增液65吨,日均增油16.8吨,有效期504天,为大庆油田过渡带稠油开采提供了新技术和新思路。针对过渡带井油层发育差、蜡质含量高、近井地带易堵塞等情况,大庆喇嘛甸油田经过多年科研攻关,不断吸取国际最新的先进技术,创新采用新型大功率超声波解堵工艺,利用地面车载大功率超声波发射机产生的大功率脉冲电振荡信号,通过特种传输电缆,将脉冲电振荡信号传输到油层,经电声转换器转换成超声波,射入含油地层中,对油层进行反复震动,解除近井地带污染堵塞。
    • 李元生; 李相方; 藤赛男; 徐大融; 和向楠
    • 摘要: 针对高速非达西动边界对产能影响的问题,开展了考虑高速非达西动边界影响的产能方程的建立。研究中采用渗流理论和惯性理论推导了高速非达西动边界公式和对应的产能方程。并基于对动边界的认识不仅提出了高速非达西出现的临界渗透率、临界产量和临界压差的概念,而且提出了高速非达西边界表皮因子。研究表明,只有储层渗透率、产量或者压差大于临界值时,储层中才可能出现高速非达西渗流;而且高速非达西边界表皮是渗透率、孔隙度、临界雷诺数以及β的函数反映了地层性质对高速非达西区域的影响,表皮越大则高速非达西区域越小,动边界的影响越不能忽略。最后与常规产能方程比较发现,渗透率在1∼10 mD时,本文产能方程的IPR曲线与其有明显的差异。提出了高速非达西动边界对产能预测的影响,提高了产能预测的精度。%To better understand the effect of the non-Darcy flow moving boundary,the effect of non-Darcy flow near wellbore caused by high velocity on productivity prediction was studied. Based on seepage theory and inertial theory,the non-Darcy moving boundary equation and a new deliverability equation are derivated. Then we proposed the concepts of critical perme-ability,critical productivity and critical pressure,and the non-Darcy boundary skin factor. Only when permeability,gas rate and pressure are all larger than critical value,non-Darcy flow appears. And a non-Darcy moving boundary skin factor is a function of permeability,porosity,critical Reynolds number andβexpressions,which reflects the effect of the petrophysical properties. And the larger the skin is,the narrower the moving boundary is and the greater its effect. Finally,a comparison with conventional deliverability equation revealed that,if the permeability range is 1∼10 mD,significant differences exist in these IPR curves. This paper proposed the effect of non-Darcy flow moving boundary on production prediction,which improve the accuracy of the productivity prediction.
    • 郭肖; 周小涪
    • 摘要: 目前在计算近井地带硫沉积时普遍采用Roberts模型,由于忽略非达西作用以及压力引起参数变化的影响,导致近井地带硫饱和度预测不准确.为此,在分析非达西作用以及气体参数变化对硫饱和度影响的基础上,考虑气体参数及单位压降下硫溶解度的变化值(dc/dp)随压力的变化情况,提出了一个改进的考虑非达西作用的近井地带硫饱和度预测模型.研究结果认为:①气体参数变化对硫饱和度预测有着重要的影响,Roberts模型过低估计了硫沉积的速度,新提出的模型能够较为准确预测含硫饱和度;②新提出的模拟计算结果表明,高速非达西流产生的较大压降会加速硫析出.因此,采用气藏工程方法预测近井地带硫饱和度时,非达西作用以及压力引起参数变化等因素不容忽视.该研究成果对酸性气藏的硫沉积评价具有一定的指导意义.
    • 万绪新
    • 摘要: 聚合物作为钻井液常用处理剂在钻井过程中得到了广泛应用,其对储层的伤害也日益被人们关注。为了建立一种快速、准确评价低渗储层钻井过程中聚合物对近井地带伤害的方法,在充分调研国内外聚合物伤害模拟评价技术的基础上,建立了低渗储层近井地带聚合物伤害模型,给出了可用于计算机编程的求解方法,并利用所建立的模型,对钻井过程中影响聚合物伤害的主要因素进行了定性分析。结果表明:聚合物伤害发生在近井地带,随着地层渗透率降低,伤害深度和程度都降低;随着压差增大,聚合物伤害程度增加;聚合物质量浓度增大,可降低工作液的滤失量,减小聚合物的伤害半径;毛管力对聚合物伤害的影响较小;启动压力梯度可降低聚合物伤害,但当其较小时,对聚合物伤害的影响不大。%Polymers are widely used in drilling as a common agent of drilling fluids and their damage to reservoirs is increasingly drawing attention .Based on investigations on the simulation evaluation tech-niques of polymer damage ,a damage model of polymers near w ellbore region of low permeability reservoirs was established for a fast and accurate evaluation method .The method of solving differential equations was also given .This method can be used for computer programming .Main factors influencing polymer damage in drilling were qualitatively analyzed by using the proposed model .The results showed that the polymer damage occurred in the vicinity of a wellbore and damage radius and the degree would decrease with the re-duction of formation permeability .In addition ,the degree of polymer damage would increase as the in-crease of pressure differential .An increase of polymer concentration could reduce the filter loss of drilling fluid and polymer damage radius .It also showed that capillary force had less effect on polymer damage and the starting pressure gradient might reduce polymer damage .But the influence on polymer damage would be much less when starting pressure gradient was quite low .
  • 查看更多

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号