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Geochemical Characteristics and Distribution of Associated Resources in Ordovician Oilfield Water of Tahe Oilfield, Tarim Basin
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Lidan REN1, Feng GENG1, Qiang HAN1, Tongcheng SUN1, Jizhong SHI2, *, Ting JIANG2, Xiaoming SHAO1, Wei LI2, Yan FAN2, Zhongyu LI2
Northwestern Geology | 2026, 59(4) : 322 - 338
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Northwestern Geology | 2026, 59(4): 322-338
Geochemical Characteristics and Distribution of Associated Resources in Ordovician Oilfield Water of Tahe Oilfield, Tarim Basin
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Lidan REN1, Feng GENG1, Qiang HAN1, Tongcheng SUN1, Jizhong SHI2, *, Ting JIANG2, Xiaoming SHAO1, Wei LI2, Yan FAN2, Zhongyu LI2
Affiliations
  • 1Research Institute of Petroleum Exploration and Production, Northwest Oilfield Company, SINOPEC, Urumqi 830011, Xinjiang, China
  • 2Xi’an Center of China Geological Survey(Northwest China Center for Geoscience Innovation), Xi’an 710119, Shaanxi, China
Published: 2026-08-20 doi: 10.12401/j.nwg.2025057
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The water resources of the Ordovician oilfield in the Tarim Basin's Tahe Oilfield are characterized by a high concentration of potassium, lithium, and other trace elements with significant economic value. These resources represent an important strategic asset in the Tarim Basin, alongside oil and gas resources. In this paper, Ordovician oilfield water samples from the Tahe oilfield were collected and analyzed to study its geochemical characteristics and its associated resource distribution pattern. The results demonstrate that the primary cations present in the Ordovician oilfield water of the Tahe Oilfield are Na+, Ca2+, K+, and Mg2+, while the primary anions are Cl−, SO42−, HCO3−, and NO3−. The mineralization of the oilfield water ranges from 140 to 260 g/L, with an average value of 216.56 g/L, indicating a medium level of mineralization. The oilfield water can be classified as a CaCl2 type. The characteristic coefficients indicate that the oilfield water undergoes alternating cation adsorption and robust water-rock interactions. It is a solution-filtered oilfield water, exhibiting complete reduction, optimal reservoir confinement, and a notable degree of metamorphism. The ions present in the oilfield water are predominantly derived from rock salt, gypsum, and crumbly clay minerals. The useful components, including K+, Li+, Br−, and Sr2+, exist in oilfield water can meet the industrial indicators of comprehensive utilization: the K+ content ranging from 556 to 2740 mg/L with an average value of 1781.19 mg/L; the Li+ content varying from 2.9 to 18.5 mg/L with an average concentration of 11.16 mg/L; the concentration of Br− ranging from 45 to 323 mg/L with an average concentration of 230.77 mg/L; The concentration of Sr2+ ranging from 341 to 605 mg/L with an average of 473.31 mg/L. Conducting research on oilfield water that coexists with oil and gas resources, and comprehensively developing and utilizing the associated resources, is of significant importance for enhancing the resource value of oil and gas fields.

Tarim basin  /  oilfield water  /  geochemistry  /  trace element  /  lithium  /  potassium
任丽丹, 耿锋, 韩强, 孙同成, 史冀忠, 姜亭, 邵小明, 李渭, 范焱, 李忠煜. 塔里木盆地塔河油田奥陶系油田水地球化学特征及其伴生资源分布特征. 西北地质, 2026 , 59 (4) : 322 -338 . DOI: 10.12401/j.nwg.2025057
Lidan REN, Feng GENG, Qiang HAN, Tongcheng SUN, Jizhong SHI, Ting JIANG, Xiaoming SHAO, Wei LI, Yan FAN, Zhongyu LI. Geochemical Characteristics and Distribution of Associated Resources in Ordovician Oilfield Water of Tahe Oilfield, Tarim Basin[J]. Northwestern Geology, 2026 , 59 (4) : 322 -338 . DOI: 10.12401/j.nwg.2025057
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Year 2026 volume 59 Issue 4
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Article Info
doi: 10.12401/j.nwg.2025057
  • Receive Date：2025-03-11
  • Online Date：2026-09-16
  • Published：2026-08-20
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History
  • Received：2025-03-11
  • Revised：2025-06-09
  • Accepted：2025-06-11
Affiliations
    1Research Institute of Petroleum Exploration and Production, Northwest Oilfield Company, SINOPEC, Urumqi 830011, Xinjiang, China
    2Xi’an Center of China Geological Survey(Northwest China Center for Geoscience Innovation), Xi’an 710119, Shaanxi, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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