Typical analysis of the Leak-off testing (LOT) in wells assumes elastic wellbore and involves identification of diversion points from linear trends of the recorded plots. However, LOTs from wells in the shallow marine sediments (SMS) are inherently nonlinear and their analysis becomes a problem. The paper presents mathematical models of the pressure-volume behavior for two different possible failures around the casing shoe, annular crack (cement-rock parting) and formation fracture. The study submits that these two failure modes would control abnormal LOT patterns. A general pressure-volume model of LOT has been developed including volumetric effects of wellbore expansion, mud loss into the rock, and propagation of an annular crack or plastic fracture. A diagnostic method is proposed to identify LOT-control mechanisms (i.e., formation fracture, annular crack, or mud loss) by analyzing the shut-in section of the LOT’s plot.
Skip Nav Destination
Article navigation
December 2002
Technical Papers
Analysis of Leak-off Tests in Shallow Marine Sediments
Desheng Zhou,
Desheng Zhou
IHS Energy Group, 18333 Preston Road, #300, Dallas, TX 75252
Search for other works by this author on:
Andrew K. Wojtanowicz
Andrew K. Wojtanowicz
Louisiana State University, Craft and Hawkins Department of Petroleum Engineering, 3516 CEBA, Baton Rouge, LA 70803
Search for other works by this author on:
Desheng Zhou
IHS Energy Group, 18333 Preston Road, #300, Dallas, TX 75252
Andrew K. Wojtanowicz
Louisiana State University, Craft and Hawkins Department of Petroleum Engineering, 3516 CEBA, Baton Rouge, LA 70803
Contributed by the Petroleum Division and presented at the ETCE/OMAE2000, New Orleans, Louisiana, February 14–17, 2000, of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS. Manuscript received by the Petroleum Division, June 2000; revised manuscript received July 2002. Associate Editor: E. Kuru.
J. Energy Resour. Technol. Dec 2002, 124(4): 231-238 (8 pages)
Published Online: November 20, 2002
Article history
Received:
June 1, 2000
Revised:
July 1, 2002
Online:
November 20, 2002
Citation
Zhou, D., and Wojtanowicz, A. K. (November 20, 2002). "Analysis of Leak-off Tests in Shallow Marine Sediments ." ASME. J. Energy Resour. Technol. December 2002; 124(4): 231–238. https://doi.org/10.1115/1.1506322
Download citation file:
Get Email Alerts
Stage-wise kinetic analysis of ammonia addition effects on two-stage ignition in dimethyl ether
J. Energy Resour. Technol
Related Articles
Borehole Failure Resulting From Formation Integrity (Leak-Off) Testing in Upper Marine Sediments Offshore
J. Energy Resour. Technol (June,1998)
Dual-Permeability Modeling of Capillary Diversion and Drift Shadow Effects in Unsaturated Fractured Rock
J. Heat Transfer (October,2009)
Modeling Flow of a Biviscous Fluid From Borehole Into Rock Fracture
J. Appl. Mech (January,2006)
Propagation of a Plane Strain Hydraulic Fracture With a Fluid Lag in Permeable Rock
J. Appl. Mech (September,2018)
Related Proceedings Papers
Related Chapters
Simulation of the Fracture Network in the Inter-Bed Layered Rock Masses
Geological Engineering: Proceedings of the 1 st International Conference (ICGE 2007)
In Situ Observations of the Failure Mechanisms of Hydrided Zircaloy-4
Zirconium in the Nuclear Industry: 20th International Symposium
Meso-Experiment on the Softening and Cracking of Surrounding Rock from a Railway Tunnel under Water Damage Condition
Geological Engineering: Proceedings of the 1 st International Conference (ICGE 2007)