XRD矿物分析技术在杨税务潜山勘探中的应用

doi:10.3969/j.issn.1672-9803.2020.01.007

录井工程 ›› 2020, Vol. 31 ›› Issue (1): 35-41.doi: 10.3969/j.issn.1672-9803.2020.01.007

XRD矿物分析技术在杨税务潜山勘探中的应用

于伟高^①, 张瑞雪^②, 苗雪^②, 徐婕^③, 谢静平^①, 陈金平^③, 张玉新^③

①中国石油华北油田公司勘探事业部;
②中国石油华北油田公司勘探开发研究院;
③中国石油渤海钻探工程公司第二录井公司

修回日期:2019-12-04 出版日期:2020-03-25 发布日期:2020-04-13
作者简介:于伟高工程师,1989年生,2015年毕业于中国石油大学(华东)地质工程专业,现在中国石油华北油田公司勘探事业部从事录测井管理工作。通信地址:062552 河北省沧州市任丘市华北油田公司勘探事业部。电话:(0317)2700137。E-mail: yjy_ywg@petrochina.com.cn
基金资助:
中国石油天然气集团公司重大专项“华北油田勘探开发关键技术研究与应用”(编号:2017E-035)

Application of XRD mineralogical analysis technique in Yangshuiwu buried hill exploration

YU Weigao^①, ZHANG Ruixue^②, MIAO Xue^②, XU Jie^③, XIE Jingping^①, CHEN Jinping^③, ZHANG Yuxin^③

①Exploration Division of Huabei Oilfield Company,CNPC, Renqiu, Hebei 062552, China;
②Exploration and Development Research Institute of Huabei Oilfield Company,CNPC, Renqiu, Hebei 062550, China;
③No.2 Mud Logging Company, BHDC, CNPC, Renqiu, Hebei 062552, China

Revised:2019-12-04 Online:2020-03-25 Published:2020-04-13

摘要/Abstract

摘要： 杨税务潜山奥陶系发育以灰岩和白云岩为主的碳酸盐岩地层,随着PDC钻头配合螺杆、扭力冲击器等复合钻井工艺的广泛应用,钻井速度大幅提升,井下返出岩屑细碎甚至呈粉末状,导致肉眼识别难度大。由于碳酸盐岩岩石类型复杂,细碎岩屑与冷盐酸均剧烈反应,造成灰岩、白云岩无法有效区分,并且潜山储集层非均质性强,给录井岩性识别带来了巨大挑战,随钻储集层品质难以确定。通过应用XRD技术,对杨税务潜山储集层岩性的矿物含量进行分析,系统开展复合钻井工艺下岩屑矿物定性与定量分析研究,建立碳酸盐岩XRD矿物分析定名标准及脆性指数计算标准,形成了碳酸盐岩岩性录井识别、脆性评价技术。该技术有力地支撑了杨税务潜山地层界面的卡层、井筒地质剖面的建立,为随钻地层对比、下步地质决策提供了坚实的基础。

关键词: XRD矿物分析, 岩性定名, 卡层, 脆性指数, 碳酸盐岩, 杨税务潜山

Abstract: Carbonate formation mainly composed of limestone and dolomite are developed in the Ordovician of Yangshuiwu buried hill. With the wide application of PDC bit combined with screw, torsion impactor and other combination drilling technologies, the drilling speed has been greatly improved, as a result, the cuttings returned from the well are fine and even in powder shape, so visual identification is difficult. Because of the complex types of carbonate rocks and the sharp reactions of fine cuttings and cold hydrochloric acid, limestone and dolomite cannot be distinguished effectively,which brings great challenges to the identification of mud logging lithology. Moreover,the buried hill reservoir is highly heterogeneous, and it is difficult to determine the reservoir quality while drilling. Therefore, by applying XRD technique, the mineral concentration of reservoir lithology in Yangshuiwu buried hill was analyzed, and the qualitative and quantitative analysis of cuttings minerals under the combination drilling technology was systematically carried out. The criteria of XRD mineralogical analysis and naming and brittleness index calculation of carbonate rocks were established, forming the lithology mud logging identification and brittle evaluation techniques for carbonate rocks. This technnique effectively supports the determination of the formation boundary and the establishment of wellbore geologic profiles of Yangshuiwu buried hill, and provides a firm foundation for the stratigraphic correlation while drilling and the geological decision-making in the next step.

Key words: XRD mineralogical analysis, lithology naming, determine the target bed interface, brittleness index, carbonate rock, Yangshuiwu buried hill

中图分类号:

TE132.1

于伟高, 张瑞雪, 苗雪, 徐婕, 谢静平, 陈金平, 张玉新. XRD矿物分析技术在杨税务潜山勘探中的应用[J]. 录井工程, 2020, 31(1): 35-41.

YU Weigao, ZHANG Ruixue, MIAO Xue, XU Jie, XIE Jingping, CHEN Jinping, ZHANG Yuxin. Application of XRD mineralogical analysis technique in Yangshuiwu buried hill exploration[J]. Mud Logging Engineering, 2020, 31(1): 35-41.

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XRD矿物分析技术在杨税务潜山勘探中的应用

Application of XRD mineralogical analysis technique in Yangshuiwu buried hill exploration

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