增强恢复

酸化-2025

今年的酸化专题介绍了三篇 SPE 会议论文,讨论了提高产量的一个重要战场——碳酸盐储层,尽管业界加大了努力以最大限度地提高产量,但这些储层的异质性、反应性和流动行为所带来的挑战仍然相对较少被理解。

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今年的酸化专题刊登了三篇SPE会议论文,探讨了提高产量的一个重要前沿——碳酸盐岩储层。尽管业界加大了产量最大化的力度,但这些储层的非均质性、反应性和流动特性仍构成挑战,人们对其了解甚少。事实证明,酸化增产对于释放碳酸盐岩储层的潜力至关重要,这些论文探讨了如何提高酸化增产的有效性。

SPE 218081 号论文描述了一种在蒙特尼油田部署的增产方法,该方法通过电缆将一种装有干化学药剂的工具部署到井下,引发井下延长的放热反应,在射孔层段前方的目标深度产生酸蒸汽,从而可以使用特定的酸液混合物处理每个层段。除了提高处理效果外,该方法还被证明是安全且经济高效的。

论文 SPE 222126 的重点是一个综合的双尺度连续模型,该模型考虑了质量、动量和能量的变化,以研究在裂缝和孔洞网络发育的情况下,复杂碳酸盐酸化系统中的酸化过程。除其他发现外,作者写道,裂缝和孔洞网络的存在减少了突破目标岩心所需的酸液消耗,并且这些网络会在基质层中诱导虫孔路径的发育,但不会改变与特定酸液注入率相对应的溶解模式。

最后,在论文SPE 221914中,作者通过建模证明了自主流量控制装置——具体来说,自主流出控制装置 (AOCD)——能够在增产作业中发挥巨大价值,克服碳酸盐岩带来的沿井筒均匀分配酸液的挑战。他们写道,AOCD不仅能通过作业前建模展现出最大的优势,还能对井筒沿线可能发生的动态变化做出反应,从而显著降低和管理基质酸化作业相关的风险。

2025 年 6 月刊中的论文摘要

SPE 218081 靶向酸化技术提高了 Montney 的产量,作者:Fraser T. Smith、StimStixx Technologies 等

SPE 222126 研究调查裂缝和孔洞网络对酸化刺激过程的影响, 作者:Cunqi Jia,德克萨斯大学等人

SPE 221914 自主流动控制装置优化基质酸刺激, 作者:Virochan Ganjoo、TAQA 等人

推荐补充阅读

SPE 222015 基质酸化刺激中不同完井方式可降解固体分流器效率的实验研究, 作者:H Zhao、埃克森美孚等人

SPE 223002 新型密度控制酸化方法:加权单相缓速酸体系与轻密度凝胶段塞和射流振荡器技术相结合,在一次运行中使石油产量增加两倍,含水量降低 10%,伊拉克案例研究,作者: AS Masoodi、Halliburton 等人。

SPE 221939 采用单相缓凝酸刺激技术有助于在刚果共和国近海高度枯竭的储层新钻井中取得优异效果, 作者:V. Mutschler、Perenco 等人

克里斯·卡彭特 (Chris Carpenter)于 2001 年加入 SPE,最初担任 SPE 同行评审期刊的副主编,后升任执行主编。2013 年,他加入《石油技术杂志》(JPT) 担任技术编辑。他负责 SPE 会议论文的“技术焦点”(Technology Focus) 专题摘要,并担任JPT编辑评审委员会的联络人。自 2001 年以来,他还担任德克萨斯州多所社区学院的英语兼职教授。卡彭特拥有亨德里克斯学院历史学学士学位、德克萨斯农工大学英语硕士学位以及阿肯色大学写作艺术硕士学位。他的联系方式:ccarpenter@spe.org

原文链接/JPT
Enhanced recovery

Acidizing-2025

This year’s Acidizing feature presents three SPE conference papers that discuss an important battlefront of enhanced production—carbonate reservoirs, those plays whose heterogeneity, reactivity, and flow behavior pose challenges that remain comparatively little-understood, despite the industry’s intensified efforts to maximize their output.

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This year’s Acidizing feature presents three SPE conference papers that discuss an important battlefront of enhanced production—carbonate reservoirs, those plays whose heterogeneity, reactivity, and flow behavior pose challenges that remain comparatively little-understood, despite the industry’s intensified efforts to maximize their output. Acid stimulation has proved crucial in helping unlock the potential of carbonate reservoirs, and these papers explore ways in which its effectiveness can be sharpened.

Paper SPE 218081 describes a stimulation method deployed in the Montney in which a tool containing a dry chemical is deployed downhole by wireline, initiating an extended exothermic reaction downhole that generates acid vapor at a target depth in front of the perforated interval, allowing each interval to be treated with specific acid blends. In addition to increasing effectiveness of treatment, the method also proved safe and cost-effective.

An integrated two-scale continuum model that contemplates mass, momentum, and energy changes to study the acid-stimulation process in complex carbonate acid-stimulation systems with the development of fracture and vug networks is the focus of paper SPE 222126. Among other findings, the authors write that the presence of fracture and vug networks reduces the consumption of acid fluid required to break through the target core, and that these networks induce the development of wormhole paths within the matrix formation but do not alter the dissolution pattern corresponding to the specific acid-fluid-injection rate.

Finally, in paper SPE 221914, the authors use modeling to demonstrate that autonomous flow-control devices—specifically, autonomous outflow-control devices (AOCDs)—can provide substantial value in stimulation operations, overcoming the challenge posed by carbonates of fairly distributing the acid treatment along the wellbore. They write that AOCDs will show the most benefits through prejob modeling but also react to dynamic changes that may occur along the wellbore, significantly reducing and managing the risks associated with matrix-acidization operations.

Summarized Papers in This June 2025 Issue

SPE 218081 Targeted Acid-Stimulation Technique Enhances Production in the Montneyby Fraser T. Smith, StimStixx Technologies, et al.

SPE 222126 Study Investigates Effect of Fracture and Vug Networks on Acid-Stimulation Process by Cunqi Jia, The University of Texas, et al.

SPE 221914 Autonomous Flow-Control Devices Optimize Matrix Acid Stimulation by Virochan Ganjoo, TAQA, et al.

Recommended Additional Reading

SPE 222015 Experimental Investigation of Degradable Solids Diverter Efficiency for Different Completions Used in Matrix Acid Stimulation by H Zhao, ExxonMobil, et al.

SPE 223002 Novel Density-Controlled Acidizing Approach: Weighted Single-Phase Retarded Acid System in Conjunction With Light-Density Gel Slugs and Fluidic Oscillator Technology Shows a Two-Fold Oil Production Increase and 10% Water-Cut Reduction in a Single Run, Case Study From Iraq by A.S. Masoodi, Halliburton, et al.

SPE 221939 Introduction of Stimulation With Single-Phase Retarded Acid Helps Achieve Superior Results in Highly Depleted Reservoir Newly Drilled Wells Offshore Republic of Congo by V. Mutschler, Perenco, et al.

Chris Carpenter joined SPE in 2001, starting his career as an associate editor and then managing editor of SPE’s peer-reviewed journals. In 2013, he joined the staff of the Journal of Petroleum Technology as technology editor. He is responsible for Technology Focus feature synopses of selected SPE conference papers and is liaison for the JPT Editorial Review Board. He has also served as an adjunct professor of English for several Texas community colleges since 2001. Carpenter holds a BA degree in history from Hendrix College, an MA degree in English from Texas A&M University, and an MFA in writing from the University of Arkansas. He can be reached at ccarpenter@spe.org.