Foam Wiper Ball Pumped 3 1/2 In Drillpipe

Foam wiper balls may be used to wipe the drillpipe or workstring to help ensure that scale does not remain on the ID.

Meritautomotive wiper ball can be loaded into drillpipe

Foam wiper balls may be used to wipe the drillpipe or workstring to help ensure that scale does not remain on the ID.

General Size Reference in.(mm)	Actual Size in.(mm)	Part No	Typical wiping range in. (mm)	Minimal restriction*** in. (mm)
3.00 (76.10)	3.15 (80)	WP10003	2.5 to 1.10 (63.5 to 27.90)	0.500 (12.7)
4.00 (102.00)	3.94 (100)	WP10004	3.12 to 1.38 (79.20 to 35.10)	0.625 (15.9)
5.00 (127.00)	4.92 (125)	WP10005	4.00 to 1.75 (101.60 to 44.50)	0.750 (19.1)
6.00 (152.40)	5.91 (150)	WP10006	4.75 to 2.00 (120.70 to 50.80)	0.875 (22.20)
7.00 (178.10)	6.89 (175)	WP10007	5.50 to 2.38 (139.70 to 60.50)	1.000 (25.40)
8.00 (203.00)	7.87 (200)	WP10008	7.00 to 3.00 (177.80 to 76.20)	1.375 (34.90)
9.00 (225.00)	8.85 (225)	WP10009	8.00 to 3.20 (203.20 to 81.28)	1.440 (36.58)
10.00 (250.00)	9.84 (250)	WP10010	8.40 to3.51 ( 213.35 to 89.15)	1.500 (38.10)
11.00 (275.00)	10.82 (275)	WP10011	8.75 to 3.75 (222.30 to 95.30)	1.750(44.50)
12.00 (300.00)	11.81 (300)	WP10012	9.00 to 4.32 (228.60to 109.73)	2.000 (50.80)

Foam wiper balls have been used with all types of drilling and displacement fluids

* Foam wiper balls cannot be pre-installed into the plug container because the foam ball can be sucked past the plunger prematurely.

** The ball may be damaged when pumped through restrictions as small as those listed in this column.