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Published: 09/01/2015
A The Solution FORM-A-SQUEEZE product was available on location and had worked with encouraging results on the previous section, while conventional LCM had not provided a great reduction in losses. So the decision was made at 9,813 ft (2,993 m) to initially mix a 19 bbl pill (12.5 bbl pumpable) covering 328 ft (100 m) of hole at 9,666 ft (2,948 m). The slurry was weighted at 50:50 ratio by volume with barite and calcium carbonate to 10.8 lb/gal (1,300 kg/m3) and spotted on bottom. The annular preventer was closed after pulling up to 9,010 ft (2,748 m) and slowly breaking circulation. Then, the well was pressured to 217- 290 psi (1,500-2,000 kPa). The annular pressure decreased to 0 after 30 seconds. The process was repeated over 1.25 hr, with the pressure eventually holding at 123 psi (850 kPa) each time. Approximately 6.3 bbl (1 m³) was lost during this time, after which the pill was left static for 1.25 hr. The Pressure began to hold at 72.5 psi (500 kPa) by the time the process was repeated two or three times. Over 45 minutes, the maximum pressure reached 522 psi (3,600 kPa), with a mud loss of 11.5 bbl. This time tagged the plug at 9,348 ft (2,851 m), and it was necessary to ream through the plugs from 9,348-9,813 ft (2,851-2,993 m). Approximately 9.5 bbl of FORM-A-SQUEEZE slurry was maintained in reserve, in the event that an additional pill was required. The Results Mud losses were initially cured while The The bit was run back in slowly. Reaming started at 9,562 ft (2,918 m) and continued to wash to bottom. The well was drilled to TD with minor seepage losses. Casing was then successfully run without losses despite intermittent stops to circulate fluid. The Details Calculated volume of open hole with string in: 52 bbl (8.2 m³) Calculated volume from 7-in (178 mm) casing shoe to assumed LC zone: 48 bbl (7.6 m³) Calculated volume of pill: +/- 56 bbl (9.0 m³) Pill formulation: 50 bbl HT 40 base oil and 100 sacks FORM-A-SQUEEZE product LC pill densities: 10.8/11.1/12.1 lb/gal (1,300/1,330/1,450 kg/m3)
FORM-A-SQUEEZE product was available on location and had worked with encouraging results on the previous section, while conventional LCM had not provided a great reduction in losses. So the decision was made at 9,813 ft (2,993 m) to initially mix a 19 bbl pill (12.5 bbl pumpable) covering 328 ft (100 m) of hole at 9,666 ft (2,948 m). The slurry was weighted at 50:50 ratio by volume with barite and calcium carbonate to 10.8 lb/gal (1,300 kg/m3) and spotted on bottom.
The annular preventer was closed after pulling up to 9,010 ft (2,748 m) and slowly breaking circulation. Then, the well was pressured to 217- 290 psi (1,500-2,000 kPa). The annular pressure decreased to 0 after 30 seconds. The process was repeated over 1.25 hr, with the pressure eventually holding at 123 psi (850 kPa) each time. Approximately 6.3 bbl (1 m³) was lost during this time, after which the pill was left static for 1.25 hr.
The Pressure began to hold at 72.5 psi (500 kPa) by the time the process was repeated two or three times. Over 45 minutes, the maximum pressure reached 522 psi (3,600 kPa), with a mud loss of 11.5 bbl. This time tagged the plug at 9,348 ft (2,851 m), and it was necessary to ream through the plugs from 9,348-9,813 ft (2,851-2,993 m). Approximately 9.5 bbl of FORM-A-SQUEEZE slurry was maintained in reserve, in the event that an additional pill was required. The Results Mud losses were initially cured while The The bit was run back in slowly. Reaming started at 9,562 ft (2,918 m) and continued to wash to bottom. The well was drilled to TD with minor seepage losses. Casing was then successfully run without losses despite intermittent stops to circulate fluid. The Details Calculated volume of open hole with string in: 52 bbl (8.2 m³) Calculated volume from 7-in (178 mm) casing shoe to assumed LC zone: 48 bbl (7.6 m³) Calculated volume of pill: +/- 56 bbl (9.0 m³) Pill formulation: 50 bbl HT 40 base oil and 100 sacks FORM-A-SQUEEZE product LC pill densities: 10.8/11.1/12.1 lb/gal (1,300/1,330/1,450 kg/m3)
Pressure began to hold at 72.5 psi (500 kPa) by the time the process was repeated two or three times. Over 45 minutes, the maximum pressure reached 522 psi (3,600 kPa), with a mud loss of 11.5 bbl. This time tagged the plug at 9,348 ft (2,851 m), and it was necessary to ream through the plugs from 9,348-9,813 ft (2,851-2,993 m). Approximately 9.5 bbl of FORM-A-SQUEEZE slurry was maintained in reserve, in the event that an additional pill was required.
Mud losses were initially cured while The The bit was run back in slowly. Reaming started at 9,562 ft (2,918 m) and continued to wash to bottom. The well was drilled to TD with minor seepage losses. Casing was then successfully run without losses despite intermittent stops to circulate fluid. The Details Calculated volume of open hole with string in: 52 bbl (8.2 m³) Calculated volume from 7-in (178 mm) casing shoe to assumed LC zone: 48 bbl (7.6 m³) Calculated volume of pill: +/- 56 bbl (9.0 m³) Pill formulation: 50 bbl HT 40 base oil and 100 sacks FORM-A-SQUEEZE product LC pill densities: 10.8/11.1/12.1 lb/gal (1,300/1,330/1,450 kg/m3)
The The bit was run back in slowly. Reaming started at 9,562 ft (2,918 m) and continued to wash to bottom. The well was drilled to TD with minor seepage losses. Casing was then successfully run without losses despite intermittent stops to circulate fluid. The Details Calculated volume of open hole with string in: 52 bbl (8.2 m³) Calculated volume from 7-in (178 mm) casing shoe to assumed LC zone: 48 bbl (7.6 m³) Calculated volume of pill: +/- 56 bbl (9.0 m³) Pill formulation: 50 bbl HT 40 base oil and 100 sacks FORM-A-SQUEEZE product LC pill densities: 10.8/11.1/12.1 lb/gal (1,300/1,330/1,450 kg/m3)
The bit was run back in slowly. Reaming started at 9,562 ft (2,918 m) and continued to wash to bottom. The well was drilled to TD with minor seepage losses.
Casing was then successfully run without losses despite intermittent stops to circulate fluid.
“Using the FORM-A-SQUEEZE product now allows us to drill these formations without having to lose so much volume and calling in the cementers, saving time and money – Get a truckload of the stuff!”
Challenge: A Solution: FORM-A-SQUEEZE product was available on location and had worked with encouraging results on the previous section, while conventional LCM had not provided a great reduction in losses. Results: The bit was run back in slowly. Reaming started at 9,562 ft (2,918 m) and continued to wash to bottom. The well was drilled to TD with minor seepage losses. Casing was then successfully run without losses despite intermittent stops to circulate fluid.
Solution: FORM-A-SQUEEZE product was available on location and had worked with encouraging results on the previous section, while conventional LCM had not provided a great reduction in losses.
Results: The bit was run back in slowly. Reaming started at 9,562 ft (2,918 m) and continued to wash to bottom. The well was drilled to TD with minor seepage losses. Casing was then successfully run without losses despite intermittent stops to circulate fluid.
Prevent lost circulation in fractures, vugular formations, matrix, and underground blowout events.
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