Akiet High Strength Composite Casings for Anti-Corrosion Applications

downhole

composite

pipes

Akiet BV

Casing Solutions where steel falls short of

expectations

• Dutch Company specialized in composite tubular

systems for deep down-hole applications

• Ten years of Composite R&D programs focused on

down hole applications only

downhole

composite

pipes

World Record

• HSCC™ successfully installed at

16,450 ft TVD

• Ran 7” casing in 8-3/8” hole

• Field proven glued connections and

steel-composite cross-overs

• Standard elevators and slips used

• Fit for purpose running gear

downhole

composite

pipes

Customer Need

• In certain geological settings and applications

corrosion and/or scaling can limit well performance

and productive well life

o Water injection wells

o Loss circulation zones

o CO2 and H2S producing reservoirs

• Akiet developed corrosion free composite casings with

required strength and standard OCTG dimensions

downhole

composite

pipes

Composites

• A combination of continuous fibers embedded in

a resin

o Not affected by acidic or bacteriological corrosion, also after

scratching or wear

o Not susceptible to scaling

o Anisotropic strength characteristics

o Internal wear-resistant liners possible

o Light weight

downhole

composite

pipes

Akiet offer

• Composite well engineering

• Composite casing design

• Composite tubular manufacturing

• Slender, reliable couplings

• Installation services

downhole

composite

pipes

Composite Well Engineering

• A fluid or gas holding body may not crack: matrix

failure as criterion

• Define all load cases taking composite weights

into account including duration and fluid

exposure

• Check load versus design and prepare running

program

downhole

composite

pipes

Composite Casing Design

• Akiet has proprietary modelling software

• Finite Element Model to calculate lay-up design to

match heaviest load requirements

• Variables include:

o Fibre orientation, volume and type

o Resin type and volume

o Curing time

• Takes specific manufacturing technique into

consideration

downhole

composite

pipes

Composite Tubulars

Akiet has achieved breakthroughs by using Rotary

Casting Technology

• High Strength (burst, collapse, compression,

tension and torque)

• Standard OCTG dimensions, 39 feet lengths

• Flexible yet sturdy

• Wear resistant, variety of liners available

downhole

composite

pipes

Slender Reliable Couplings

Proprietary coupling technology

• Low off-set, slender design (VAM TOP equivalent)

• Ability to interface steel-composite, composite-

composite and composite-steel

• Stronger than tubular itself

• Glued in place with quick-drying cohesives

downhole

composite

pipes

Installation Services

Execution of running program as agreed with

customer

• Worldwide service

• Competent staff

• Special Akiet alignment tools

• Standard drill-floor layout

downhole

composite

pipes

Additional advantages over steel

• Akiet Composite systems are light weight

o Reduced hook-load lighter equipment

o Reduced safety incidents

o Easier handling

o Ability to complete long horizontals

• Akiet composite systems are transparent for

logging

downhole

composite

pipes

Quality

• There is no certification for deep-well composite

casings because they did not exist

• Trial and testing program agreed with customer

• Example:

o First orders were tested under supervision of independent

agency TNO and Delft University of Technology

o Results were accepted by customers

downhole

composite

pipes

downhole

composite

pipes

Substantiation of claims

• Example test results of earlier order for pipe and

connection 7”

Target load (incl Safety Factors)

Test result

Tension 89 klbs 280 klbs

Compression 32 klbs 100 klbs

Burst 3945 psi 3988 psi Collapse 2639 psi 3002 psi

Torsion 2212 ft.lbs 12022 1)ft.lbs 1) No failure at limit of testing gear

downhole

composite

pipes

Installation of 7” HSCC on Rig in Oman

Akiet BV www.akiet.com info@akiet.com +31 6 83 79 51 87