Shale reservoirs, composed of fine-grained and organic-rich sedimentary rock, are common unconventional oil and gas reservoirs. Magnetic resonance (MR) relaxometry, a non-destructive and non-invasive method, is a key technique for shale evaluation. The T₁*–T₂* relaxation correlation, a rapid two-dimensional MR measurement, is a newly emerging and powerful tool to study the structure of materials with short transverse relaxation times. T₁* and T₂* are the effective longitudinal and transverse relaxation times. T₁*–T₂* measurement is a promising laboratory method to analyze fluid and organic matter components in shale, but it is very sensitive to the acquisition parameters. In this paper, the effects of acquisition parameters, including flip angle α, initial interval τ₁, α pulse interval τ, and scan number, on T₁*–T₂* relaxation correlation of shale were analyzed by numerical simulations and core plug experiments. The optimized T₁*–T₂* measurement can be two orders of magnitude faster than a simple T₁–T₂* measurement. This work provides a theoretical and practical guide for undertaking T₁*–T₂* measurements, which should be helpful for further laboratory study of shale.

页岩储层由细粒、富含有机质的沉积岩组成，是常见的非常规油气藏。磁共振 (MR) 弛豫测量法是一种无损、无创的方法，是页岩评价的关键技术。T ₁ *– T ₂ * 弛豫相关性是一种快速的二维 MR 测量方法，是研究具有短横向弛豫时间的材料结构的新兴且强大的工具。T ₁ * 和T ₂ * 是有效的纵向和横向弛豫时间。T ₁ *– T ₂* 测量是一种很有前景的分析页岩中流体和有机质成分的实验室方法，但它对采集参数非常敏感。本文通过数值模拟和岩心塞实验分析了翻转角α、初始间隔τ1、α脉冲间隔τ、扫描次数等采集参数对页岩T ₁ *– T _{2 *弛豫相关性的影响}。 . 优化的T ₁ *– T ₂ * 测量可以比简单的T ₁ – T _{2快两个数量级}* 测量。该工作为开展T ₁ *– T ₂ * 测量提供了理论和实践指导，有助于页岩的进一步实验室研究。