The 4x6 method is a well-established configuration that uses a 4 in. core barrel overcased with a 6 in. casing. Other sonic configurations follow in this manner with larger inner and outer casing sizes. When telescoping one casing over another, (such as 4x6) it is important to consider the spacing (annulus) between the telescoping casings. Geoprobe® sonic casing is designed so that each incremental casing is sized with bit clearances and annular space in mind.
Conventional Sonic Sampling
Geoprobe Systems® conventional sonic sampling systems provide a wide range of casing sizes and bit configurations. Conventional sonic sampling consists of driving your lead core barrel (sample collection) first and then overcasing it with a larger size casing. Once the larger casing has reached the same depth of the core barrel, the core barrel is removed, sample extruded, core barrel sent back down the middle of the larger casing and advanced out the end collecting another sample. Again, the larger casing is advanced to the same depth as the core barrel. This process is repeated to the depth desired. A long established casing configuration for this is using a 4 in. core barrel overcased with a 6 in. casing (4 x 6 Sonic Sampling). Other sonic configurations follow in this manner with larger inner and outer casing sizes.
Geoprobe® sonic casings have been uniquely designed with conventional sonic sampling in mind. When telescoping one casing over another, (such as 4x6) it is important to consider the spacing (annulus) between the telescoping casings. Geoprobe® sonic casing is designed so that each incremental casing is sized with bit clearances, and annular space in mind. If there is too little annulus between casings, certain soils can cause them to lock up and become stuck together. If there is too much annular space between casings, then excessive water is needed to flush the soil between the casings. The Geoprobe® sonic casing family has been uniquely designed so that each incremental casing size works efficiently with the next. Notice the similarities in the annular space between the casing sizes in the diagram. This results in a very efficient combination of casings for use in conventional sonic sampling applications such as 4x6, 6x8, or 8x10.
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MN: 210979
MN: 210648
MN: 211174
MN: 211277
MN: 212350
MN: 212351
MN: 210172
MN: 210495
MN: 210563
MN: 210602
MN: 211290
MN: 209493
MN: 211300
MN: 213363
MN: 210749
MN: 213325
6.0 SONIC BIT RHSL CC 6.0 OD 5.25 ID
MN: 226017
MN: 210569
MN: 215168
MN: 212514
4.5 SONIC BIT LHSL UNDERCUT ID CARB
MN: 213481
4.5 SONIC CASING BIT LHSL 3.75 ID
MN: 221895
MN: 209675
4.5 SONIC CORE CATCHER LH SHORT
MN: 231171
4.5 SONIC CORE CATCHER LH THIN
MN: 213151
4.5 SONIC BIT LHSL CC 4.5 OD 3.75 ID
MN: 226269
4.5 SONIC BIT LHSL FLAPPER DOUBLE
MN: 224628
4.5 SONIC BIT LHSL FLAPPER SINGLE
MN: 226328
MN: 226395
MN: 210566
4.5 SONIC BIT LHSL FULL FACE 4.88 OD
MN: 215779
MN: 212679
ADPT 3.5 LHSL PIN - 4.5 LHSL PIN
MN: 211122
MN: 216182
MN: 210649
MN: 210606
MN: 209503
MN: 600624
MN: 600448
3.25 / 3.5 in. ROD WIPER DONUT
MN: 600418
MN: 600729
MN: 210979
MN: 210648
MN: 211174
MN: 211277
MN: 212350
MN: 212351
MN: 210172
MN: 210495
MN: 210563
MN: 210602
MN: 211290
MN: 209493
MN: 211300
MN: 213363
MN: 210749
MN: 213325
6.0 SONIC BIT RHSL CC 6.0 OD 5.25 ID
MN: 226017
MN: 210569
MN: 215168
MN: 212514
4.5 SONIC BIT LHSL UNDERCUT ID CARB
MN: 213481
4.5 SONIC CASING BIT LHSL 3.75 ID
MN: 221895
MN: 209675
4.5 SONIC CORE CATCHER LH SHORT
MN: 231171
4.5 SONIC CORE CATCHER LH THIN
MN: 213151
4.5 SONIC BIT LHSL CC 4.5 OD 3.75 ID
MN: 226269
4.5 SONIC BIT LHSL FLAPPER DOUBLE
MN: 224628
4.5 SONIC BIT LHSL FLAPPER SINGLE
MN: 226328
MN: 226395
MN: 210566
4.5 SONIC BIT LHSL FULL FACE 4.88 OD
MN: 215779
MN: 212679
ADPT 3.5 LHSL PIN - 4.5 LHSL PIN
MN: 211122
MN: 216182
MN: 210649
MN: 210606
MN: 209503
MN: 600624
MN: 600448
3.25 / 3.5 in. ROD WIPER DONUT
MN: 600418
MN: 600729