地化录井技术在油基钻井液环境下储层流体性质识别中的应用

doi:10.3969/j.issn.1672-9803.2021.04.012

录井工程 ›› 2021, Vol. 32 ›› Issue (4): 66-72.doi: 10.3969/j.issn.1672-9803.2021.04.012

地化录井技术在油基钻井液环境下储层流体性质识别中的应用

宋昀轩^①, 王雷^②, 蔡军^②, 鲁法伟^②

①中海油能源发展股份有限公司上海工程技术分公司;
②中海石油(中国)有限公司上海分公司

收稿日期:2021-10-08 出版日期:2021-12-25 发布日期:2022-01-18
作者简介:宋昀轩工程师,1989年生,2012年毕业于西南石油大学资源勘查工程专业,现在中海油能源发展股份有限公司上海工程技术分公司主要从事现场地质监督工作。通信地址:200030 上海市长宁区通协路385号海洋石油大厦A813室。电话:13127866106。E-mail:songyx6@cnooc.com.cn
基金资助:
国家科技重大专项“东海深层低渗-致密天然气勘探开发技术”(编号:2016ZX05027)

Application of geochemical logging technology to reservoir fluid property identification in oil-based drilling fluid environment

SONG Yunxuan^①, WANG Lei^②, CAI Jun^②, LU Fawei^②

①Shanghai Branch of CNOOC Ener Tech-Drilling & Production Co., Shanghai 200030,China;
②CNOOC China Limited Shanghai Company, Shanghai 200030,China

Received:2021-10-08 Online:2021-12-25 Published:2022-01-18

摘要/Abstract

摘要： 随着东海西湖凹陷宝云亭地区勘探向深层、复杂构造区推进,钻井现场引入油基钻井液以确保高效钻进。在录井过程中,由于该区荧光显示微弱且样品受油基钻井液干扰严重,快速识别储层含油气性难度很大。通过地化录井资料统计分析,总结出适用于该区油基钻井液环境下准确识别和评价储层流体性质的方法。该方法基于芳香烃区域参数Y_x、地化热解S₁值的校正值参数建立交会图板,可有效识别宝云亭地区储层轻质油、凝析气和水层,在定性对比油质轻重及确定流体界面位置方面也有很好的应用。实践证明,该评价方法有效解决了油基钻井液环境下储层流体判识的难题,现场应用效果良好,为该区储层的录井解释评价提供了可靠的技术手段和参考依据。

关键词: 油基钻井液, 地化录井, 流体性质识别, 油气层评价, 宝云亭地区

Abstract: As the exploration of Baoyunting area in Xihu Sag advances to the deep and complex structural areas, oil-based drilling fluid is introduced into the drilling site to ensure efficient drilling. While mud logging in this area, it is difficult to rapidly identify reservoir oil-bearing properties because of weak fluorescence show and serious interference of oil-base drilling fluid in samples. Through the statistical analysis of geochemical logging data, the method suitable for accurately identifying and evaluating reservoir fluid properties in oil-based drilling fluid environment in this area is summarized. This method establishes a crossplot chart of aromatic hydrocarbon regional parameter Y_x and the corrected value of geochemical pyrolysis S₁ value, which can effectively identify the light oil, condensate gas and water layer of reservoirs in Baoyunting area, and has good application in qualitative comparison of oil density and determination of fluid interface position.The practice proves that the evaluation method can effectively solve the problem of reservoir fluid identification in the oil-based drilling fluid environment, and the field application effect is good, providing reliable technical means and reference basis for mud logging interpretation and evaluation of reservoirs in this area.

Key words: oil-based drilling fluid, geochemical logging, fluid property identification, hydrocarbon reservoir evaluation, Baoyunting area

中图分类号:

TE132.1

宋昀轩, 王雷, 蔡军, 鲁法伟. 地化录井技术在油基钻井液环境下储层流体性质识别中的应用[J]. 录井工程, 2021, 32(4): 66-72.

SONG Yunxuan, WANG Lei, CAI Jun, LU Fawei. Application of geochemical logging technology to reservoir fluid property identification in oil-based drilling fluid environment[J]. Mud Logging Engineering, 2021, 32(4): 66-72.

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地化录井技术在油基钻井液环境下储层流体性质识别中的应用

Application of geochemical logging technology to reservoir fluid property identification in oil-based drilling fluid environment

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