Pith Number

pith:JJBVIK47

pith:2026:JJBVIK47M44TJPXWKREPXBQC4Q

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Stress state, subsidence, and faulting in the Wilmington Oil Field, California: a multiphase flow-geomechanics modeling assessment (1936-2020)

Andreas Plesch, Franklin D. Wolfe, John H. Shaw, Josimar A. Silva, Llu\'is Sal\'o-Salgado, Ruben Juanes

Numerical model of Wilmington oil field shows low deviatoric initial stress best matches observed subsidence

arxiv:2605.16711 v1 · 2026-05-15 · physics.geo-ph

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Record completeness

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Claims

C1strongest claim

Model results show that the previously assumed stress regime in the field (reverse faulting) needs to be reassessed—the best match to the ground deformation data is achieved when the sedimentary section is initialized with low deviatoric stress (i.e., not critically stressed). This suggests significant variation in the stress state with depth, including a likely change in the stress regime.

C2weakest assumption

The numerical model assumes that its elastoplastic constitutive framework, detailed fault geometry, and calibration to published reservoir pressure and surface displacement measurements are sufficient to isolate the effect of the initial stress state without significant contributions from unmodeled processes such as chemical compaction or incomplete fault representation.

C3one line summary

A calibrated multiphase flow-geomechanics model of the Wilmington Oil Field from 1936-2020 indicates that initializing the sedimentary section with low deviatoric stress provides the best fit to historical ground deformation data and implies a shift from the previously assumed reverse-faulting regim

References

105 extracted · 105 resolved · 0 Pith anchors

[1] \ Mayuga, M N 1970

[2] , Heflin, M B 1999 · doi:10.1130/0091-7613(1999)027

[3] aziz1979 APACrefauthors Aziz, K. \ Settari, A. APACrefauthors \ 1979 . Petroleum Reservoir Simulation Petroleum Reservoir Simulation . London, UK Applied Science Publishers . APACrefDOI doi:10.2118/97 1979 · doi:10.2118/9781613999646

[4] APACrefauthors \ 1941 1941 · doi:10.1063/1.1712886

[5] bisdom2016 APACrefauthors Bisdom, K. , Bertotti, G. \ Nick, H M. APACrefauthors \ 2016 . The impact of in-situ stress and outcrop-based fracture geometry on hydraulic aperture and upscaled permeabilit 2016 · doi:10.1016/j.tecto.2016.04.006

Formal links

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Receipt and verification

First computed	2026-05-20T00:02:37.814497Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a43542b9f673934bef65448fb8602e41f2b1bf96ac14082933e02ec3910ebfd

Aliases

arxiv: 2605.16711 · arxiv_version: 2605.16711v1 · doi: 10.48550/arxiv.2605.16711 · pith_short_12: JJBVIK47M44T · pith_short_16: JJBVIK47M44TJPXW · pith_short_8: JJBVIK47

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/JJBVIK47M44TJPXWKREPXBQC4Q \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 4a43542b9f673934bef65448fb8602e41f2b1bf96ac14082933e02ec3910ebfd

Canonical record JSON

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    "abstract_canon_sha256": "34ee8053e29f42fd042b2ac8cf974ee182a881fc712fb2039b47d538c30c34ee",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2026-05-15T23:48:13Z",
    "title_canon_sha256": "9b75e4be63dc3df0f9a26baa5290cb792a76159576e8c36b08282ec4da7ca89d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.16711",
    "kind": "arxiv",
    "version": 1
  }
}