Abstract The Wolfcamp Shale within the Delaware Basin of West Texas and southeastern New Mexico is one of the largest unconventional oil reservoirs globally and also produces high volumes of relatively low salinity water. In contrast, the overlying Bone Spring Formation and, particularly, the shallower Delaware Mountain Group contain very saline brines. The objective of the study was to assess source and nature of waters produced from the Wolfcamp and to frame them in the larger geological and hydrogeological evolution of the Basin. A total of ~150 produced water samples were analyzed for major and trace element chemistry and isotope data and were complemented by public domain and confidential information. The formation shows a striking total dissolved solids (TDS) distribution with low TDS water samples ( 2 km) mudstone package of Pennsylvanian to lower Permian age, combined with the effects of the Laramide uplift and Neogene tilting of the entire Basin.

中文翻译：

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美国特拉华盆地 Wolfcamp 页岩（二叠纪）中低盐度、高产量产水的来源

摘要 位于德克萨斯州西部和新墨西哥州东南部的特拉华盆地内的 Wolfcamp 页岩是全球最大的非常规油藏之一，还生产大量相对低盐度的水。相比之下，上覆的骨泉组，尤其是较浅的特拉华山群，含有非常咸的盐水。该研究的目的是评估 Wolfcamp 产生的水的来源和性质，并将其纳入盆地更大的地质和水文地质演化框架。共分析了约 150 个采出水样品的主要和微量元素化学和同位素数据，并辅以公共领域和机密信息。