Depressurization‐Induced Fines Migration in Sediments Containing Methane Hydrate: X‐Ray Computed Tomography Imaging Experiments

Han Gyeol; Kwon Tae‐Hyuk; Lee Joo Yong; Kneafsey Timothy J.

摘要

Abstract >Depressurization of hydrate‐bearing sediments (HBS) can cause the movement of fine particles, and in turn, such fines migration affects fluid flow and mechanical behavior of sediments, ultimately affecting long‐term hydrocarbon production and wellbore stability. This study investigated how and to what extent depressurization of HBS causes fines migration using X‐ray computed tomography (CT) imaging. Methane hydrate was synthesized in sediments with 10% fines content (FC), composed of sands with silt and/or clay, and the hydrate‐bearing samples were stepwisely depressurized while acquiring CT images. The CT images were analyzed to quantify the spatial changes in FC in the host sediment and thus to capture the fines migration during depressurization. It was found that the FC changes began occurring from the hydrate dissociation regions. This confirms that the multiphase flow caused by depressurization accompanies fines migration. Depressurization of HBS with a hydrate saturation of ~20–40% caused FC reduction from ~10% to ~6–9%, and the extent of fines migration differed with the particle sizes of the host sands and the types of fines. It was found that fines migration was more pronounced with coarse sands and with silty fines. Such observed level of FC reduction is estimated to increase sediment permeability by several factors based on the Kozeny‐type permeability model. Our results support the notion that the extent of fines migration and its effect on fluid flow behavior need to be assessed in consideration of physical properties of host sediment and fine particles to identify optimum depressurization strategies. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“main”XML：Lang =“en”> <标题类型=“main”>摘要</标题> >水合物沉积物的减压（HBs）会导致细颗粒的运动，以及转身，这种细鳍迁移影响沉积物的流体流动和力学行为，最终影响长期烃生产和井眼稳定性。本研究研究了HBS的减压如何以及在何种程度上使用X射线计算机断层扫描（CT）成像引起罚款迁移。在沉积物中合成甲烷水合物，用10％的含量（Fc）合成，由含有淤泥和/或粘土的砂组成，并且在获取CT图像时，水合物样品在步骤限制。分析CT图像以量化宿主沉积物中Fc的空间变化，从而捕获减压期间的鳍状侧迁移。发现FC变化开始于水合物解离区发生。这证实了抑制伴随伴随的多相流伴随着迁移。 HBS的水合物饱和度〜20-40％的抑制性导致Fc降低约〜10％至〜〜6-9％，并且粉末迁移的程度与宿主砂的粒径和罚款类型不同。发现罚款迁移更加明显，粗砂和粉质罚款更加明显。估计基于Kozeny型渗透性模型的若干因素估计这种观察到的Fc减少水平。我们的结果支持考虑到宿主沉积物和细颗粒的物理性质来评估罚款迁移程度及其对流体流动性的影响，以确定最佳减压策略。</ p> </摘要> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-34677/'>《Journal of geophysical research. Solid earth: JGR》</a> <b style="margin: 0 2px;">|</b><span>2018年第4期</span><b style="margin: 0 2px;">|</b><span>共20页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Han Gyeol&option=202" target="_blank" rel="nofollow">Han Gyeol;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Kwon Tae‐Hyuk&option=202" target="_blank" rel="nofollow">Kwon Tae‐Hyuk;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Lee Joo Yong&option=202" target="_blank" rel="nofollow">Lee Joo Yong;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Kneafsey Timothy J.&option=202" target="_blank" rel="nofollow">Kneafsey Timothy J.;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>Department of Civil and Environmental EngineeringKorea Advanced Institute of Science and Technology (KAIST)Daejeon South Korea;</p> <p>Department of Civil and Environmental EngineeringKorea Advanced Institute of Science and Technology (KAIST)Daejeon South Korea;</p> <p>Oil and Gas Research CenterKorea Institute of Geoscience and Mineral Resources (KIGAM)Daejeon South Korea;</p> <p>Hydrocarbon Resources Program HeadLawrence Berkeley National LaboratoryBerkeley California USA;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/163.html" title="地球物理学">地球物理学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Methane Hydrate&option=203" rel="nofollow">Methane Hydrate;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=X‐ray CT&option=203" rel="nofollow">X‐ray CT;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Fines migration&option=203" rel="nofollow">Fines migration;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Depressurization&option=203" rel="nofollow">Depressurization;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Dissociation&option=203" rel="nofollow">Dissociation;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Multiphase Flow&option=203" rel="nofollow">Multiphase Flow;</a> </p> <div class="translation"> 机译：甲烷水合物;X射线CT;罚款迁移;减压;解离;多相流动; </div> </li> </ul> </div> </div> <div class="literature cardcommon" id="literaturereference" style="display:none"> <div class="similarity "> <h3 class="all_title" id="enpatent111">引文网络</h3> <div class="referencetab clearfix"> <ul id="referencedaohang"> <li dataid="referenceul">参考文献</li> <li dataid="citationul">引证文献</li> <li dataid="commonreferenceul">共引文献</li> <li dataid="commoncitationul">同被引文献</li> <li dataid="tworeferenceul">二级参考文献</li> <li dataid="twocitationul">二级引证文献</li> </ul> </div> <div class="reference_details" id="referenceList"> <ul id="referenceul"></ul> <ul id="citationul"></ul> <ul id="commonreferenceul"></ul> <ul id="commoncitationul"></ul> <ul id="tworeferenceul"></ul> <ul id="twocitationul"></ul> </div> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704025592645.html">Depressurization‐Induced Fines Migration in Sediments Containing Methane Hydrate: X‐Ray Computed Tomography Imaging Experiments</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Han Gyeol&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Han Gyeol,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Kwon Tae‐Hyuk&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Kwon Tae‐Hyuk,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Lee Joo Yong&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Lee Joo Yong,</a> <a href="/journal-foreign-34677/" target="_blank" rel="nofollow" class="tuijian_authcolor">Journal of geophysical research. 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