Ultra Spacer Multiple Locations
Well Information
Ultra Spacer Newfield, OK
Well Information
Operator: Newfield Exploration
Location: Eastern Oklahoma
Open Hole Size: 9 7/8”
Casing Size: 7”
Mud Weight: 9.0 lb/gal
Cement Density: 13.5 lb/gal
Ultra Spacer® Volume: 37 bbls
Ultra Spacer® Density: 12.5 lb/gal
Ultra Spacer, Red Rock, OK
Well Information
Operator: British Petroleum (BP)
Location: Main Pass Block 185 – Well #1
Open Hole Size: 12 1/4”
Casing Size: 9 5/8”
Mud Weight: Air Drilling
Cement Density: 16.4 lb/gal
Ultra Spacer® Volume: 45 bbls
Ultra Spacer® Density: 8.5 lb/gal
Ultra Spacer, Main Pass Block
Well Information
Operator: Cimarex-Magnum Hunter
Location: Main Pass Block 185 – Well #1
Open Hole Size: 9 7/8”
Casing Size: 7 5/8”
Mud Weight: 15.8 lb/gal
Cement Density: 17.0 lb/gal
Ultra Spacer® Volume: 44 bbls
Ultra Spacer® Density: 16.4 lb/gal
Challenge
Newfield, OK
The Operator was going to drill deeper and set a 5 1/2” production string. Due to loss circulation problems they were required to set a short string of 7” intermediate casing.
Red Rock, OK
To form a strong cement bond across a shallow, fresh water aquifer, thereby eliminating the need for the short strong of casing being used to isolate the aquifer.
Main Pass Block 185
To reduce gas migration and casing pressure issues.
Results
Newfield, OK
The cement job started with partial returns. 158 bbls into the displacement, total losses occurred. Partial returns were regained 250 bbls into the displacement and maintained for the rest of the job. Partial returns started just before the last few barrels of spacer entered the annulus.
Red Rock, OK
Ultra Spacer® provided great hole cleaning along with good bonding across the entire interval, including across the fresh water aquifer, and the successful elimination of the short string casing, which resulted in significant savings.
Main Pass Block 185
Ultra Spacer’s® non-invasive seal prevented fluid migration into the formation from the cement slurry. Gas migration issues were also eliminated and zero casing pressure was observed for the first time in this field.