We compare four approaches to geomechanical modeling of stresses adjacent to salt bodies. These approaches are distinguished by their use of elastic or elastoplastic constitutive laws for sediments surrounding the salt, as well as their treatment of fluid pressures in modeling. We simulate total stress in an elastic medium and then subtract an assumed pore pressure after calculations are complete; simulate effective stress in an elastic medium and use assumed pore pressure during calculations; simulate total stress in an elastoplastic medium, either ignoring pore pressure or approximating its effects by decreasing the internal friction angle; and simulate effective stress in an elastoplastic medium and use assumed pore pressure during calculations. To evaluate these approaches, we compare stresses generated by viscoelastic stress relaxation of a salt sphere. In all cases, relaxation causes the salt sphere to shorten vertically and expand laterally, producing extensional strains above and below the sphere and shortening against the sphere flanks. Deviatoric stresses are highest when sediments are assumed to be elastic, whereas plastic yielding in elastoplastic models places an upper limit on deviatoric stresses that the rocks can support, so stress perturbations are smaller. These comparisons provide insights into stresses around salt bodies and give geoscientists a basis for evaluating and comparing stress predictions.

Gang Luo

Maria A. Nikolinakou

Peter B. Flemings

Michael R. Hudec

AAPG Bulletin

虽然 21 世纪的 AAPG 公报自 1917 年以来发生了一些变化，扩大到 8 ½ X 11 英寸以包含更多材料并以数字和印刷形式出版，但它继续坚持该组织的主要宗旨，即推进地质科学，特别是与石油、天然气、其他地下流体和矿产资源有关的地质科学。作为会员费的一部分，每月以数字或印刷形式向每个 AAPG 会员交付，AAPG 公报是最受尊敬的公报之一, 现有的同行评审技术期刊，最近几期的论文集中在中东、航道探测、中国、渗透率、次震断层预测、美国和非洲等主题。

The AAPG Bulletin is a journal that has undergone some changes since its inception in 1917, now expanded to 8 ½ X 11 inches to accommodate more content and published in both digital and print formats. Nevertheless, it continues to uphold its primary mission of advancing geological sciences, particularly in areas related to petroleum, natural gas, other subsurface fluids, and mineral resources. As part of the membership fee, the AAPG Bulletin is delivered monthly in digital or print format to each AAPG member. It is one of the most respected peer-reviewed technical journals, with recent issues focusing on topics such as the Middle East, channel detection, China, permeability, aftershock fault prediction, the United States, and Africa.

AAPG Bulletin 是一份自 1917 年以来经历了一些变化的期刊，现已扩展至 8 ½ X 11 英寸，以容纳更多内容，并以数字和印刷形式出版。尽管如此，它仍然坚持推进地质科学的主要宗旨，特别是与石油、天然气、其他地下流体和矿产资源相关的领域。作为会员费的一部分，AAPG Bulletin 每月以数字或印刷形式送达每位 AAPG 会员。该期刊是最受尊敬的同行评审技术期刊之一，最近几期的论文集中在中东、航道探测、中国、渗透率、次震断层预测、美国和非洲等主题。

Category	Quartile
地球科学	3
地球科学, 地球科学综合	3

Geomechanical modeling of stresses adjacent to salt bodies: Part 1—Uncoupled models

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Journal Info

Category	Quartile
GEOSCIENCES, MULTIDISCIPLINARY	2