Tdas West Shell 091602

TDAS
Schlumberger Private
Tubular Design and Analysis System
TDAS
 Quickly design casing and tubing strings with technically robust

software that has proven to be the benchmark for accuracy.
 Its proven technology is based on 30 years of engineering
experience and is validated by its worldwide installation and use
since 1983.
Tubular Design and Analysis System
 Tubular: Casing and Tubing
 Design: User criteria  Least cost design
 Analysis: User pipe  Resulting design factors
 Expert: Company Policy  Load cases, strings, etc.

TDAS Capabilities
Expert System
 The Expert System - an electronic casing design handbook -
generates standard load cases, hole sizes and service conditions
with minimal input required.
Design
 You can generate minimum cost casing or tubing string designs
based upon relative cost and specified design factors.
Analysis
 You can specify any casing or tubing string, and determine resulting
design factors.
TDAS Expert System
Expert System
 The TDAS Expert module quickly generates the design constraints
and least cost string, including
• Multiple design load cases
• Standard hole sizes
• Tops of cement
Design Capabilities
With the design capabilities of TDAS, you can create…
 Least-cost strings from the pipes available using your corporate
design philosophy
 Minimum-design constraints including API tension, API collapse,

API burst and compression, and VME as designated by the user.
TDAS Design
 The design tools within TDAS allow quick and intelligent decisions
to be made.
Reports are
easily viewed
and printed.
All reports
support Cut,
Copy, and Paste.
TDAS Design
 The design tools within TDAS allow quick and intelligent decisions
to be made.
Graphical results
The TELCAP plot

shows the triaxial and
API operating envelope
for each casing and
tubing section.
Analysis Capabilities
 Tubing, casing, liners, tiebacks

 Multiple-axial constraints
 Multiple-cemented intervals
 Multiple-axial adjustments (slack-off or pick-up)
 Unrestrained, limited or fixed motion at tubular ends
 The modeling of packers and tieback receptacles
 Triaxial stress analysis using Lame's and Von Mises equations
Sensitivity Cases (Models)
Wellplan: Test Well
Type: Surface Production Casing Tubing
Models: D EXP.str3.prod_casing A 9.625 std TOC A 9.625 full cement
String: 9.625 53.5 P110 BTC 9.625 53.5 P110 BTC
criteria #3
Criteria:
d=12.25” MD=10000’ d=12.25” MD=10000’ washout

Hole:
Base: as cemented string #3 as cemented string #3 fully cemented
Loads: full evac string #3 full evac string #3 dead oil
surf tbg leak-hot screen out surf tbg leak-static
surf tbg leak-static stimulation screen out
1000 psi evac

TDAS 5.2 Improvements
 Single action to run expert and automatically design pipe

 Human Interface closer to Windows look and feel
 Canadian units group
 Pipe catalogs expanded adding pipes up to 60”
 Cut, copy, and paste from reports and plots
 MMS summary report
TDAS 6.0 Improvements
 Streamlined product workflow

 Consolidated Design and Analysis models
 New Human Interface
 User configurations, saved views
 New Wellbore Schematic
 New Results, Reports, Plots
TDAS custom Expert System rule set
 Design factors for casing & tubing reflect the Shell Casing Design Manual.
 21 tubulars and connections used by NAM will be provided
 Green cement pressure test for casing will be generated as an additional string analysis
 Casing Load Cases (changes)
 “Lost Circulation”
 “Gas to Surface”
 “Leak off Test ”
 Production Casing, Production Liners and Tiebacks (changes)
 “Well Kill-hot”, “Well Kill-static” &“Well Kill-cold”
 Dual gradient external pressure of the existing Full Evacuation (static)
 “Full Evacuation-hot”
 “Shut-in on safety valve-hot”
WEST
 Finite difference-based
calculations
 Steady-state and transient
temperature analysis for
complex wells
 Analysis of injection,
production, drilling, forward
and reverse circulation, shut-
in and wait-on-cement times.
Powerful plotting features reveal
temperature versus depth and
temperature versus time.
TDAS 6.x (Futures)
 User friendly interface from 6.0
 Integration with Drilling Office
 Data inputs (casing seats, pore pressure etc)
 Refresh with results (wellbore geometry, casing details)
 Customizable design rules
 Technical development
 Probabilistic design (tubular performance, load occurrence)
 Annular pressure build-up, multi-string, wellhead growth
 Casing point based on kick tolerance, pore pressure and fracture
gradient
 Multiple packers, tubing movements, temperature models
 Business case needs to be established

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What are the main capabilities of TDAS?

What are the main capabilities of TDAS?

What design and analysis features does TDAS provide?

What design and analysis features does TDAS provide?

TDAS

 Quickly design casing and tubing strings with technically robust

 Tubular: Casing and Tubing

 Analysis: User pipe  Resulting design factors

 Expert: Company Policy  Load cases, strings, etc.

With the design capabilities of TDAS, you can create…

 Minimum-design constraints including API tension, API collapse,

The TELCAP plot

 Tubing, casing, liners, tiebacks

Type: Surface Production Casing Tubing

Models: D EXP.str3.prod_casing A 9.625 std TOC A 9.625 full cement

d=12.25” MD=10000’ d=12.25” MD=10000’ washout

Base: as cemented string #3 as cemented string #3 fully cemented

Loads: full evac string #3 full evac string #3 dead oil

surf tbg leak-hot screen out surf tbg leak-static

surf tbg leak-static stimulation screen out

1000 psi evac

 Single action to run expert and automatically design pipe

 Streamlined product workflow

 Steady-state and transient

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