TESCO Casing Drive System

TESCO CDS (Casing Drive System) Atwood Falcon G15 December 2009

Upfront peripheral work MU 13-3/8 x 5-1/2 swedge MU MRPT (Mechanical Running Pulling Tool) MU well control XO assy Note : these (MRPT and well control XO ) could be MU and assembled in Labuan base (off-line)


TESCO 13-3/8 shoe track assy with internal BHA locked in lock nipple assy

TESCO guide shoe Internal BHA with 12-1/4 stab

TESCO 13-3/8 casing shoe track assy Internal BHA locked in lock nipple

10 ft 13-3/8 casing pup-joint to lock nipple assy connection

NOT Baker-locked !!


External BHA (bit x UR x MM-MWD assy 116 ft) made-up and set in Rotary Table TESCO SDE in bails for picking up shoe joint assy.


External BHA (116 ft including 12.25 bit / 16.0 UR / MM MWD assy) being made-up by rig tongs to TESCO shoe joint assy internal BHA.


Installing guide plate assembly to TDS PS60 pipe handler PJSM prior picking up Casing Drive System


CDS (Casing Drive System) transport cradle sitting on catwalk CDS being lifted (air tugger) to well centre


CDS made-up to TDS (using spacer sub HDIS 5-1/2 FH box x pin) Unable to MU CDS directly to TDS

(7-1/2 OD too large for TDS pipe handler)

CDS sitting in 13-3/8 casing in rotary table Hydraulic hoses hooked-up


CDS torque arm modified (extended) to be compatible with extra length of spacer-sub

CDS torque arm

Control panel with good line of sight to driller

CDS system rigged-up and function testing by picking up fist 13-3/8 casing joint 13-3/8 guide shoe assy (with 116 ft external BHA) sitting in rotary table


Picking up 1st joint of 13-3/8 casing with CDS single joint elevator


Engaging 13-3/8 casing with grapple assy Setting grapple (hydraulically activated) obtaining features:

LH - RH rotation lifting capability,

swab cup provides pressure integrity for circulation


Applying Baker lock on 13-3/8 KFox connection MU cycle effected with TDS-4 top drive (LH until joint drops in thread, RH rotation to optimum MU torque


RIH (or drill down) , set in slips, release CDS, pull CDS clear of 13-3/8 connection sitting in rotary table Slips hydraulically activated

Swab cup provides pressure integrity for circulation (washing / drilling or just fill up)


Casing drilled to depth, pup joint laid down (just to be 20 ft off bottom) CDS rigged down and to be transferred to storage pod (hydraulic hoses remain connected).


13-3/8 swedge assy made-up to casing string in rotary table Using Kevlar tong (sensor / gauge) to apply correct MU torque (line pull x tong arm length).

Drilling ahead with DP CDS parked in pod

Well drilled to section TD and circulated clean. Pumped out of hole with DP (500 pptf pad mud i.e. spud mud with 5 ppb quick seal fine LCM)

Swedge assy racked back. Running in hole with MRPT on 5-1/2 DP using false rotary table.


Pulling out of hole 5-1/2 DP and BHA using false rotary table (note stack-up elevation above rotary table)


Pulling out of hole BHA (MRPT and DLA assy) using false rotary table Note 8.0 DCs set in bowl BHA secured with safety clamp above

Note stack-up elevation above rotary table


Pulling out of hole BHA using false rotary table Note unable to set 9-1/2 DCs in bowl preparing to set 12-1/4 stab on bowl


Pulling out of hole BHA using false rotary table Note unable to set 9-1/2 DCs in bowl preparing to set 12-1/4 stab on bowl

Note stack-up height above DF


Pulling out of hole last stand of BHA 120 ft 12-1/4 bit and UR racked back


Subsequent program steps: Inspect 13-3/8 casing connection (possible damage due to round tripping) RU CDS RIH space-out joints using CDS / TDS MU cycle RD CDS PU 18-3/4 housing swedged back to 13-3/8 casing RIH on 5-1/2 DP land 18-3/4 housing in 30.0 LP housing under ROV observation

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TESCO Casing Drive System

Documents

mu cds

casing joint

cds madeup

driller cds system

catwalk cds

release cds

cds clear

casing pupjoint