天然气水合物开采井防砂充填层砾石尺寸设计方法

李彦龙; 胡高伟; 刘昌岭; 吴能友; 陈强; 刘乐乐; 李承峰

doi:10.11698/PED.2017.06.14

石油勘探与开发 >

2017 , Vol. 44 >Issue 6: 961 - 966

DOI: https://doi.org/10.11698/PED.2017.06.14

石油工程

天然气水合物开采井防砂充填层砾石尺寸设计方法

李彦龙 ,
胡高伟 ,
刘昌岭 ,
吴能友 ,
陈强 ,
刘乐乐 ,
李承峰

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1. 青岛海洋地质研究所国土资源部天然气水合物重点实验室,山东青岛 266071;
2. 青岛海洋科学与技术国家实验室海洋矿产资源评价与探测技术功能实验室,山东青岛 266071

李彦龙（1989-）,男,甘肃定西人,硕士,中国地质调查局青岛海洋地质研究所研究实习员,主要从事海域天然气水合物开采相关的力学及出砂-防砂问题研究。地址：山东省青岛市市南区福州南路62号,青岛海洋地质研究所,邮政编码：266071。E-mail：liyanlongupc@163.com 联系作者简介：胡高伟（1982-）,男,湖北仙桃人,博士,中国地质调查局青岛海洋地质研究所副研究员,主要从事海域天然气水合物地球物理与试采工程准备相关的研究。地址：山东省青岛市市南区福州南路62号,青岛海洋地质研究所,邮政编码：266071。E-mail：hgw-623@163.com

收稿日期: 2017-06-20

修回日期: 2017-08-31

网络出版日期: 2017-11-24

基金资助

国家自然科学基金（41606078）; 国家重点研发计划深海专项（2017YFC0307600）; 青岛海洋科学与技术国家实验室开放基金（QNLM2016ORP0203,QNLM2016ORP0207）

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Gravel sizing method for sand control packing in hydrate production test wells

LI Yanlong ,
HU Gaowei ,
LIU Changling ,
WU Nengyou ,
CHEN Qiang ,
LIU Lele ,
LI Chengfeng

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1. Key Laboratory of Gas Hydrate, Ministry of Land and Resources, Qingdao Institute of Marine Geology, Qingdao 266071, China;
2. Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China

Received date: 2017-06-20

Revised date: 2017-08-31

Online published: 2017-11-24

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摘要

针对水合物储集层流体抽取法开采过程中面临的出砂问题,提出了针对黏土质粉砂型水合物储集层的“防粗疏细”式防砂充填层砾石尺寸设计方法,并以中国南海神狐海域X站位为例进行了具体分析。以X站位为例,分析了水合物储集层地层砂基本特性,对地层砂粗、细组分进行划分,并分别计算了疏通细组分和阻挡粗组分所需的防砂充填层砾石尺寸范围,通过求解两者的交集来确定最佳砾石尺寸。研究表明,X站位水合物储集层为分选性、均匀性极差且黏土含量较高的粉砂质储集层,上、下部储集层防砂充填层最佳砾石尺寸设计结果分别为143~215 μm和240~360 μm。在现场施工无法严格满足分层防砂要求的情况下,为了兼顾上、下部储集层,在满足充填强度的前提下,推荐X站位防砂充填层砾石尺寸为215~360 μm。图3表2参22

关键词： 天然气水合物; 试采; 出砂管理; 防砂充填砾石; 中国南海; 神狐海域

本文引用格式

李彦龙 , 胡高伟 , 刘昌岭 , 吴能友 , 陈强 , 刘乐乐 , 李承峰 . 天然气水合物开采井防砂充填层砾石尺寸设计方法[J]. 石油勘探与开发, 2017 , 44(6) : 961 -966 . DOI: 10.11698/PED.2017.06.14

Abstract

To deal with sand production problems during the process of producing natural gas from hydrate-bearing sediments (HBS) using reservoir-fluid extraction method, a new gravel sizing method for sand control packing named “Hold coarse while eliminate fine particle (HC & EF method)” was developed for the clayey hydrate-bearing formations. Site X, in Shenhu area, South China Sea was taken as an example to describe detailed gravel sizing procedure. On the basis of analyzing basic particle size distribution (PSD) characteristics of HBS at Site X, the formation sand was divided into two components, which are coarse component and fine component. The gravel sizes for retaining coarse component and eliminate fine component were calculated, respectively. Finally, intersection of these two gravel sizes was taken as the proper gravel size for Site X. The research results show that the formation at Site X is clayey sand with poor sorting and uniformity, proper gravel size for upper segment packing is 143-215 μm, while that for lower segment packing is 240-360 μm. In consideration of the difficulty of layered sand control operation on offshore platform, proper gravel packing size for Site X is recommended as 215-360 μm.

Key words： gas hydrate; production test; sand management; sand control gravel; South China Sea; Shenhu area

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