Application of FORM-A-SQUEEZE Pill Boosts <formaction=/search.php, Controls Losses in Mexico Well | 果冻传媒

果冻传媒

Application of FORM-A-SQUEEZE Pill Boosts

Published: 09/01/2015

Blue hero texture
Well Information
 
Location Bay of Campeche, Mexico
Fluid type and density VERSADRIL invert-emulsion, density of 1.30 SG (10.8 lb/gal)
Interval drilled 12¼-in hole, interval of 3674 ft (1120 m): 2657–6660 ft (810–2030 m)
Temperature at loss depth 198°F (92°C)

The Situation

Client operating personnel met with M-I SWACO engineers in search of a technical alternative to properly seal the loss zone and to continue with normal operations.

The Solution

M-I SWACO recommended the use of a FORM-A-SQUEEZE pill to seal the zone where the partial lost circulation occurred. A 50-bbl, 1.31 SG (10.9 lb/gal) FORM-A-SQUEEZE pill consisting of diesel, FORM-A-SQUEEZE additive, and calcium carbonate was prepared and blended.

  • Having the bit at 5905 ft (1800 m), 40 bbl of FORM-A-SQUEEZE pill was pumped. Pressure: 600 psi, displaced at 800 strokes per min
  • Lifted bit to 5459 ft (1664 m), circulated at a low flow rate of 10 strokes for 5 min; then pumping was suspended, annular preventor was closed, satisfactorily repressurizing with 200 psi for 10 min
  • Pressure was discharged to zero; annular preventor was opened and initially circulated at a low flow rate. The flow rate was gradually increased until initial
  • The 12¼-in section was taken to bottom, circulated at a low flow rate, increasing little by little until reaching and maintaining 540 gal/min, and continued
Application of FORM-A-SQUEEZE Pill Boosts <formaction=/search.php, Controls Losses in Mexico Well
Time (min) (ft) Pressure (psi) Bbl
2.5 50 K 1.6
5 100 3.2
7.5 150 4.8
10 200 6.4
15 150-200 7
Time (min) Pressure (psi) Bbl Remarks
10 150-200 7 Pressure was kept constant

The Results

After pumping the FORM-A-SQUEEZE pill:

  • A complete cycle was circulated at 540 gal/min, keeping normal levels
  • Drilled to bottom without experiencing lost circulation, keeping normal levels at surface
  • No waiting-on-cement times were required
  • Continued
  • Waiting times were eliminated
  • Operational costs were reduced
  • Continued

“When a partial lost circulation was experienced during Operator

Location
Mexico, North America, Offshore
Details

Challenge: Partial lost circulation at a rate of 11 m3/hr (69.2 bbl/hr) was observed.

Solution: Use of a FORM-A-SQUEEZE pill to seal the zone where the partial lost circulation occurred.

Results: Waiting times were eliminated and operations costs were reduced.

Products Used