An Interactive 5-Day Training Course
Gravity Flow Processes & Sediment Transport Mechanics
Reading Gravity Flows From Their Deposits
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Duration
5 Days
Price
$ 3,500
Starting From
14 Jun 2027
Home Geology and Geoscience Gravity Flow Processes & Sediment Transport Mechanics
Gravity Flow Processes & Sediment Transport Mechanics
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Gravity Flow Processes & Sediment Transport Mechanics - GG-GRAVF-PEA27
| Code | Date | Time | Duration | Location | Currency | Early Bird Fee Per Person |
|---|---|---|---|---|---|---|
| GG-GRAVF-PEA27 | 14 - 18 Jun 2027 | 10 AM CST | 4 Hours Per Day |
Online |
USD |
3500 |
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Gravity Flow Processes & Sediment Transport Mechanics
This training covers sediment transport and gravity flow mechanics as the physical basis for interpreting deposits. It works through fluid flow fundamentals, particle entrainment and transport modes, bedform stability and flow regime, sediment gravity flow classification and rheology, flow transformation, deposition mechanisms and the bed types they produce, experimental and numerical methods, and the application of this reasoning to reservoir prediction.
Description
Every sedimentary structure is the frozen record of a flow condition. Knowing which flow conditions produce which structures turns description into interpretation and allows prediction of what is not seen. This matters most in deepwater systems, where the deposits are produced by flows that cannot be observed directly, where bed type controls reservoir quality more than facies association does, and where the distinction between a turbidite, a debrite and a hybrid bed has direct consequences for net sand and permeability.
This training develops the physics and then applies it. Fluid flow fundamentals are established first: laminar and turbulent flow, boundary layers, shear stress, Reynolds and Froude numbers, and what each controls. Particle entrainment and transport follow, covering settling velocity, the Hjulstrom and Shields relationships, bedload and suspended load, and the hydraulic sorting that results. Bedforms and flow regime are then developed, including bedform stability fields, the structures each bedform produces, and the use of preserved structures to infer flow conditions. Sediment gravity flows are then treated in detail: classification by support mechanism, rheology, turbidity currents of high and low density, debris flows, grain flows and liquefied flows, and the transformations between them along a flow path. Deposition mechanisms and bed types follow, covering the Bouma sequence and its limitations, structureless sandstone emplacement, hybrid event bed formation and the reservoir consequences of each. The training closes with experimental and numerical approaches and with the application of flow reasoning to reservoir and facies prediction.
Flow transformation explains most of what is confusing about deepwater beds. A flow that begins as a dense sandy turbidity current can entrain mud, become cohesive and transform into a debris flow as it moves downslope and decelerates, depositing a clean sandstone proximally and a muddy, clast-rich sandstone distally from what was a single event. The hybrid event beds that result are predictable in position, occurring in lobe fringes and lateral margins, and they have a fraction of the permeability of the clean sandstone upflow. Understanding transformation is therefore how bed type distribution is predicted rather than merely mapped.
Structureless sandstones are common and frequently misread. A thick sandstone with no visible internal structure can be deposited by rapid suspension fallout from a high density turbidity current, by en masse freezing of a sandy debris flow, or by post-depositional liquefaction destroying original structures. The three have different implications for flow efficiency, run-out distance and lateral extent. Subtle evidence such as faint grading, dish and pillar structures, floating clasts and basal shear fabric distinguishes them, and the distinction matters for predicting the body geometry.
Flow efficiency controls where the sand ends up. An efficient flow carries sediment far from its source and deposits thin widespread beds; an inefficient one deposits close to source in thick proximal accumulations. Efficiency depends on flow volume, grain size, mud content and the degree of turbulence maintained. Systems fed by fine-grained, mud-rich, large volume flows build extensive fans with thin distal beds; coarse, sand-rich, small volume systems build restricted, proximal, amalgamated accumulations. This is a first-order control on fan geometry that can be inferred from the source area.
Finally, the physics constrains interpretation in a way that pure facies description does not. A proposed interpretation that requires a flow condition which cannot physically occur, or that requires bedforms to exist outside their stability field, is wrong regardless of how the facies scheme is arranged. Using flow reasoning as a check on sedimentological interpretation eliminates a category of error that description alone cannot detect.
By the end of this training, participants will be able to:
- Apply fluid flow fundamentals including shear stress and dimensionless flow parameters
- Explain particle entrainment, settling and transport modes
- Interpret bedform stability fields and infer flow conditions from preserved structures
- Classify sediment gravity flows by support mechanism and rheology
- Interpret flow transformation along a flow path and its deposit consequences
- Identify turbidite, debrite and hybrid event bed types and their formation
- Explain structureless sandstone emplacement and distinguish its mechanisms
- Assess flow efficiency and its control on deposit geometry
- Apply experimental and numerical results to subsurface interpretation
- Use flow reasoning to predict bed type and reservoir quality distribution
The training combines physical reasoning with core interpretation. Flow calculations are worked through at a level participants can apply, including settling velocity, entrainment thresholds and flow regime determination. Core and outcrop beds are then interpreted in terms of the flow conditions that produced them, with particular attention to structureless sandstones and hybrid beds. Published experimental and numerical results are reviewed for what they constrain. Participants test sedimentological interpretations against physical plausibility and identify those that cannot work.
Organisations sending participants to this training will:
- Improve bed type interpretation and its reservoir quality consequences
- Predict hybrid bed and low quality interval distribution
- Reduce net sand overestimation from misread bed types
- Improve deposit geometry prediction from flow reasoning
- Test sedimentological interpretations against physical plausibility
- Build the physical foundation underlying all sedimentological interpretation
Participants will:
- Interpret sedimentary structures in terms of flow conditions
- Classify and interpret gravity flow deposits confidently
- Distinguish structureless sandstone emplacement mechanisms
- Predict bed type distribution within a depositional system
- Check interpretations against physical constraints
- Build the process understanding that underpins facies analysis
- Sedimentologists and reservoir geologists
- Geoscientists working on deepwater reservoirs
- Core describers interpreting gravity flow deposits
- Reservoir modellers representing bed type heterogeneity
- Petrophysicists working on net sand in turbidite successions
- Exploration geoscientists predicting deepwater reservoir quality
- Graduate geoscientists requiring process grounding
Module 1 - Fluid Flow Fundamentals
- Fluid properties: density, viscosity, rheology
- Laminar and turbulent flow
- Reynolds number and flow classification
- Boundary layers and velocity profiles
- Bed shear stress and its calculation
- Froude number and flow state
- Subcritical, critical and supercritical flow
- Hydraulic jumps and their deposits
- Open channel and density flow comparison
- Turbulence and its role in sediment support
- Flow measurement and its scaling to ancient systems
Module 2 - Particle Transport and Entrainment
- Settling velocity and Stokes law
- Grain size, shape and density effects
- Hindered settling at high concentration
- Entrainment thresholds and the Shields parameter
- Hjulstrom diagram and cohesive sediment behaviour
- Bedload transport mechanisms
- Suspended load and concentration profiles
- Washload and its behaviour
- Hydraulic sorting and its compositional effect
- Transport capacity and competence
- Deposition from suspension and its rate
Module 3 - Bedforms and Flow Regime
- Bedform initiation and development
- Ripples and their stability field
- Dunes and their scaling
- Upper stage plane bed
- Antidunes and supercritical bedforms
- Cyclic steps and their deposits
- Bedform stability diagrams
- Grain size and velocity controls
- Bedform migration and cross-stratification
- Climbing bedforms and aggradation rate
- Combined flow bedforms
- Inferring flow conditions from preserved structures
Module 4 - Sediment Gravity Flow Classification
- Gravity flow definition and driving force
- Support mechanisms and classification basis
- Turbidity currents and turbulent support
- Debris flows and cohesive strength
- Grain flows and dispersive pressure
- Liquefied and fluidised flows
- Flow rheology: Newtonian and non-Newtonian
- Cohesive and non-cohesive flow behaviour
- Flow density and concentration ranges
- Flow initiation mechanisms
- Hyperpycnal flows and their character
- Flow classification schemes and their differences
Module 5 - Flow Transformation and Evolution
- Transformation concept and its causes
- Mud entrainment and cohesion development
- Flow deceleration and deposition onset
- Debris flow to turbidity current transformation
- Turbidity current to debris flow transformation
- Ignition, autosuspension and flow growth
- Flow stratification and density layering
- Erosion and substrate entrainment
- Flow run-out distance and its controls
- Flow efficiency and its determinants
- Topographic interaction: reflection and ponding
- Transformation and downflow bed type change
Module 6 - Deposition Mechanisms and Bed Types
- Deposition from turbulent suspension
- Bouma sequence and its interpretation
- Bouma sequence limitations and misuse
- Low density turbidite character
- High density turbidite deposition
- Structureless sandstone emplacement mechanisms
- Dish, pillar and dewatering structures
- En masse freezing and debrite deposition
- Debrite internal character and clast distribution
- Hybrid event beds and their divisions
- Linked debrites and their position in a system
- Bed type effect on porosity and permeability
Module 7 - Experimental and Numerical Approaches
- Flume experiments and their design
- Scaling problems and dynamic similarity
- What experiments demonstrate and what they do not
- Large scale experimental facilities
- Numerical modelling of gravity flows
- Depth-averaged and three dimensional models
- Modelling flow interaction with topography
- Forward stratigraphic modelling
- Monitoring of modern turbidity currents
- Direct observation in submarine canyons
- Reconciling experiment, model and rock record
Module 8 - Application to Reservoir Prediction
- Bed type mapping within a reservoir
- Predicting hybrid bed distribution
- Flow efficiency and fan geometry prediction
- Grain size and source area control on deposit character
- Confinement effects on flow and deposit
- Predicting reservoir quality from flow reasoning
- Net sand determination with mixed bed types
- Log response of different bed types
- Connectivity consequences of bed type distribution
- Testing facies interpretations for physical plausibility
- Flow reasoning in facies scheme design
- Application in shallow marine and fluvial systems
Upon successful completion of this training course, delegates will be awarded an official Certificate of Completion issued by the Petroleum Engineers Association (PEA), an ISO 9001:2015 certified training organization. The certificate carries 10 Credits and formally records the total learning hours completed.
Each certificate is signed by the Course Facilitator and the CEO of the Petroleum Engineers Association, and serves as verifiable proof of professional training that delegates can present to employers and professional bodies worldwide.
Frequently Asked Questions
All course bookings made through PEA are strictly non-refundable. By registering for a course, you acknowledge and accept that all fees are payable in full and are not subject to refund under any circumstances, including changes in personal or professional commitments or partial attendance.
PEA reserves the right to make reasonable adjustments to course content, trainers, or schedules where necessary, without entitling delegates to a refund. Comprehensive details of each course — including objectives, target audience, and content — are clearly outlined before enrolment, and it is the responsibility of the delegate to ensure the course's suitability prior to booking.
For any inquiries related to cancellations or bookings, please contact our support team, who will be happy to assist you.
