Formation water geochemistry and the petroleum geological significance in Yanchang Formation of Wuqi Oilfield, Ordos Basin, China

IF 0.6 4区工程技术 Q4 ENERGY & FUELS

International Journal of Oil, Gas and Coal Technology Pub Date : 2023-01-01 DOI:10.1504/ijogct.2023.127353

Xia Wang, Guomin Fu

引用次数: 1

Abstract

Formation water can evaluate the petroleum preservation conditions and thus can be used to identify hydrocarbon reservoirs. This paper analysed the formation water geochemistry and its relationship with the petroleum distribution in Yanchang Formation of Wuqi Oilfield, Ordos Basin. The formation water shows property of weak acid and high salinity. The ion concentrations are dominated by C1-, Na+, K+ and Ca2+. The CaCl2-type water is predominant. The chemical properties here indicate good sealing conditions for petroleum preservation. The high TDS value and the low (Na+ /C1-), (100 × SO42-/Cl- and ((CO32- + HCO3-/CA2+) ratios indicate better sealing condition for petroleum preservation. The formation water chemical geochemistry can provide predictions of oil-rich reservoirs. [Received: January 24, 2022, Accepted: June 04, 2022]

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鄂尔多斯盆地吴起油田延长组地层水地球化学特征及油气地质意义

地层水可以油气保存条件评价,从而可以用来识别油气藏。分析了鄂尔多斯盆地吴起油田延长组地层水地球化学特征及其与油气分布的关系。地层水呈弱酸性、高矿化度特征。离子浓度以C1-、Na+、K+和Ca2+为主。以cacl2型水为主。这里的化学性质表明具有良好的油气保存密封条件。TDS高价值和低(Na + / C1 -),(100×SO42 - / Cl和((CO32 - + HCO3 - / CA2 +)比率表明石油保护更好的密封条件。地层水的化学地球化学可以提供石油储层的预测。[收稿日期:2022年1月24日，收稿日期:2022年6月4日]

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Oil, Gas and Coal Technology ENERGY & FUELS-ENGINEERING, CHEMICAL

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

2.9 months

期刊介绍： IJOGCT is a multidisciplinary refereed journal that is concerned with exploration, production, processing and refining, storage and transportation, economical, managerial, business, environmental, safety and security issues related to oil, natural gas, coal and petrochemicals as well as manufacturing and refining of biofuels. Topics covered include Exploration, geological studies, reserves estimation Production/recovery methods, drilling technology, subsea engineering Production rates, forecasting future demand Heavy oil, oil sand/shale recovery/processing, oil/gas field processing Petroleum refining, coal liquid/hydrogen production, petrochemical industry Ultra low sulphur fuels, LNG, CNG and LPG, natural gas processing Gasoline from natural gas/coal liquid, biorefining, biofuels Nano/biotechnology, computerisation/automation, modelling/simulation Refinery process optimisation, management of refining industry, major oil companies Fuel quality/specifications, storage, transportation Environmental issues, carbon management, sequestration, storage Oil spill occurrence, monitoring, clean up methods, contingency plans Fuel prices, future market fluctuations, forecasting, safety/security Business/international trade regulations, political/governmental/economic issues Biofuels vs fossil fuels; future technology, business.

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