Creating Metal In Situ Plugs

IADC, DEC Tech Forum – Well Life Cycle Design June 8, 2016

Downhole Sealing Challenges

Cement used as the primary barrier • Issues with shrinkage, poor interfacial bonding and permeability •Doesn’t form a permanent gas tight barrier

Tools Limited expansion ratio •Typically only a few % expansion •Or larger expansion but limited pressure holding capability

Elastomer based seal •Limited integrity with time •Limited chemical compatibility

V0 rating a challenge •Corroded or damaged casing prevents making a seal •Weak casing prevents high force setting tools

Starter

Chemical reaction heater Alloy (sealing element)

Base Technology

Testing and Modeling

Heater test and temperature measurement Heater Model

Heater model based on 100’s of heater tests

• P&A or temporary plugs • Wireline or Slickline Deployment

• Creates a Metal to Metal seal • Sets in rough or clean surface • Tested to 10,000PSI differential sealing

Benefits

• Alloy melts and fills the gap to casing ID • Metal solidifies and expands to seal

Working Principle

• 14 plugs field-tested –Catoosa test facility • 2 plugs set in Alaska Status

Job in Alaska 03/16

WSO Tool, 3.25” OD, 15ft long

Resulting plug through sandscreen to 9”5/8 casing

• Intervention • Wireline or Slickline Deployment

• Blocks-off water production zone • Maintains sandscreen integrity Benefits

• Alloy is melted off the tool, flow through sandscreen

• Metal solidifies across, to casing or OH ID

Working Principle

• In field-test GoM June 2016 Status

Water Shut-off

(Thermally Deformable Annular Packer)

• Packer is run with casing • Heater is run after, on Wireline or Slickline Deployment

• Seals-off annular gas leaks • Mitigates cement sealing limitations Benefits

• Alloy is mounted on inner casing • Cement is run above and below (optional) • Metal is melted then solidifies as a seal

Working Principle

• In field-test Status

Position in inner casing

Cement flows through

Create cement channels

View on cement channels

Heating

Once the cement is set the heater is lowered on the wireline

Cross section through melted alloy

Cement channels broken by internal and external springs creating a metal to metal gas tight seal

Casing Leak Seal Tool

• Wireline, Slickline or Coil-Tubing Deployment

• Seals casing leak • Fully millable to restore original casing ID Benefits

• Heater is activated and melts the alloy • Alloy penetrates leak path to seal off • Aluminum plug body is milled out easily

Working Principle

• In field test (deployed in West Texas) Status

Tool Before Setting

Tool after Setting

P&A • Temporary plug (tubing and

casing) • Abandonment • Casing removal

Completion • Annular isolation (cement gas

migration) • Leak repair (tubing and casing) • Fishing

Production • Zonal Isolation • OHGP • Leak repair • Fishing

Drilling • Well control • Casing drilling

BiSN Tools Applications

Contact Please contact us at BiSN Oil Tools at:

paul.carragher@bisnoiltools.com Cell +832 653 0298

BiSN Oil Tools LLC

4539 Brittmoore Road Houston

Texas 77041

+1 832 919 7500