E Z Squeeze
Date: September 6, 2002
Well Name / Area: OCS-G 3088 #F-3
Operator: B.P. Production & Exploration
Total Depth: 13,854'
Problem Interval: 11,052' – 13,854'
Mud Type / Weight: Enviromul (SBM) 16.6 ppg
Hole Size: 10 5/8” @ 12,950’
Experiencing fluid losses in both sands and ballooning shales.
Premix 120 BBL E Z Squeeze in Halliburton blender (100sx E Z Squeeze/60 BBL batch) to achieve 100 BBLS finished volume. Due to poor mixing conditions slurry had to be transferred to pre-hydrate pit. The 1st batch was then pumped from the pit to the drill pipe. The 2nd sixty barrel batch was then built in the slug pit and pumped down the drill pipe. With the bit @ 12,950’ the E Z Squeeze was spotted into the open hole, the bit was then POOH to casing shoe. The hydril was closed and 5 BBLS of slurry were squeezed to increase pressure to 200psi/ per BP procedure with no hold time.
Opened up backside and relieved pressures. Circulate out and condition drilling fluid at drill rate. No losses or ballooning occurring.
E Z Squeeze prevented the unnecessary downtime which could have been costly to B.P. Production & Exploration being that the rig was in preparation for the evacuation of a Tropical Storm.
E Z Squeeze
Date: January 14, 2003
Well Name / Area: OCS-G 19084 #1 / Garden Banks 197
Rig: Ocean Lexington
Total Depth: 7,500'
Problem Interval: Casing Shoe
Mud Type / Weight: Lignosulfonate 12.9 ppg
Hole Size: 12 1/4"
While drilling with 12.9 ppg Lignosulfonate mud the well kicked. Lost circulation while trying to kill the well with 13.5 ppg mud.
Mixed 100 BBLS of 13.5 ppg E Z Squeeze with 63 BBLS Freshwater, 275 sx E Z Squeeze, 290 sx Barite, and 2 pails of Defoamer. The slurry was pumped down the drill pipe using the Dowell cement unit. Only 73 BBLS, of the 100 BBLS mixed, could be pumped from the pit down the drill pipe. The slurry was displaced to the bit with 67 BBLS of 13.8 ppg mud from the active system. Once the slurry cleared the bit, 24 BBLS were squeezed into the formation leaving 50 BBLS in the casing 350’ below the bit. Shut down for 10 minutes, resumed squeezing ¾ BBLS @ ¼ bpm when pressure on drill pipe increased to 225psi and 125psi on the annulus. The pressures = 14.95 ppg EMW as compared to the original Leak Off Test of 14.1 ppg EMW.
Once the EMW of 14.95 ppg was achieved and held, operations were stopped for one (1) hour. Broke circulation with no problem and established full returns. Drilling resumed to TD, after which a liner was set.
E Z Squeeze
Date: December 12, 2002
Well Name / Area: Knowles A-1 / Freestone County, TX
Rig: Nabors #617
Total Depth: 15,136'
Problem Interval: 14,200’
Mud Type / Weight: 15.7 ppg WBM
Hole Size: 6 1/2"
While weighting up to stop CO2 started losing mud. Company man was not sure if he was losing on bottom or at shoe. They shut in the well and pressured up after conditioning the mud, unable to maintain pressure over 450 psi.
Built 60 bbls E Z Squeeze, spotted 25 bbls on bottom and 25 bbls @ shoe. Anadarko wanted a 17.0 ppg EMW.
After squeezing approximately 3 bbls of E Z Squeeze the pressures jumped up to 1000 psi. Turbo-Chem was successfully able to maintain 970 psi on the drill pipe = 17.0 ppg EMW.
The E Z Squeeze was a success with only 3 bbls being squeezed into the formation. Turbo-Chem was able to achieve the 17.0 ppg EMW Anadarko requested.
Premium Seal / Turbo Phalt
Date: June 27th, 1999
Well Name / Area: E.P.N.G #11 / Live Oak County, TX
Total Depth: 7,900'
Problem Interval: Queen City Sand (±6,000')
Mud Type / Weight: Oil Mud / 13.4 ppg
Hole Size: 8 3/4"
Queen City Sand possibly depleted creating differential pressure of ± 7000 PSI. Lost returns and tight hole conditions experienced on offset well.
At ± 5,000’, a system treatment containing 4 ppb Turbo Phalt and 5 ppb Premium Seal Fine was added to provide deformable and malleable particles designed to seal sand sections. Ten bbl sweeps containing 5 ppb Premium Seal Fine, 5 ppb Premium Seal Coarse, and 5 ppb Turbo Phalt were pumped every 100’ while drilling the Queen City Sand package.
No mud loss, tight hole conditions or stuck pipe occurred while drilling this section of hole.
A preventive approach along with good well planning utilizing Premium Seal Fine and Turbo Phalt proved to be very effective in drilling the Queen City Sand package trouble free.