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Sonic Weighted Wireline System

Designed to complement the Sonic Dual Tube 4.5 in. (SDT45) system for sonic applications, the SDT45 Weighted Wireline (WWL) system from Geoprobe® adds yet another innovative tool to the Geoprobe® sonic tool box. While conventional wireline systems with various latching mechanisms have proven themselves in the coring world, their adaptation to sonic applications has not been without its challenges.

Jed Davis, lead engineer for the new system, said that conventional wireline systems utilize a mechanical latch to hold a core barrel in place inside of the core rod at the bottom of the tool string. “The tool string (core barrel and core rod) is advanced through the sampling interval,” Davis explained. “A release tool (overshot) is then lowered down to release the mechanical latch so the core barrel can be retracted.”

Weighted Wireline Innovation

The ‘secret’ behind the SDT45 Weighted Wireline design is ... Mass. The core barrel uses a simple weight system to hold it in place at the bottom of the tool string rather than a mechanical latch. In other words, the latching mechanism is replaced by a weight system.

Davis explained: “The weight system is modular in design and is comprised of 150 lb. weight segments that can be coupled together depending on sampling conditions. In most cases two, 150 lb. weight segments are sufficient to sample consolidated formations,” he said.

According to Davis, one critical design feature of this system is the adaptation of the modular weight system to the Geoprobe® rod handler. “Once the weight system is initially put into the tool string, it’s not handled by us again until after the last sample has been retrieved from the borehole,” he said. During every sample extraction at ground surface, the weight system is easily handled by the rod handler and never by the driller or driller’s helper. “Coming from someone who spends their days outside working with tools, that’s a great thing!” Davis added.

Weighted Wireline Compatibility

The SDT45 Weighted Wireline system is designed to complement the standard SDT45 tooling. Davis recommends using standard SDT45 tooling with 2.25-inch center rods in softer, shallower formations. When deeper intervals (50 feet plus) or consolidated formations are encountered, “the weighted wireline system can easily be implemented without pulling the casing,” Davis added.

The SDT45 and SDT60 (Sonic Dual Tube 6.0 in.) and the new SDT45 Weighted Wireline system are designed by and available exclusively through Geoprobe Systems®, and can be used under most sonic rigs.

Key Features

  • Designed to compliment the Sonic Dual Tube 4.5 in. (SDT45) system for sonic applications
  • Core barrel uses a simple weight system to hold it in place at the bottom of the tool string
  • Much faster trip out times than traditional sonic sampling

Tooling Links

Parts

To order parts or to get a quote, click here.
You will have the option to order immediately (pending payment) or get a quote.

4.5 in. Sonic Casing LHSL

120 in.

MN: 210172

4.5 in. Sonic Casing LHSL

60 in.

MN: 210495

4.5 in. Sonic Casing LHSL

24 in.

MN: 210563

4.5 in. Sonic Casing LHSL

12 in.

MN: 210602

4.5 in. Sonic Bit LHSL SDT45, Dome

4.93 in. OD, 2.65 in. ID

MN: 226395

4.5 in. Sonic Bit LHSL SDT45, Para

4.93 in. OD, 2.65 in. ID

MN: 210566

4.5 LHSL Box x 4.5 LHSL Pin

4.00 in. S-S, Sub saver

MN: 212679

WWL Weight Head

MN: 220023

WWL Connector Pin

MN: 220325

WWL Spearhead

MN: 220205

WWL Weight

150 lb.

MN: 220257

WWL Spring Cushion

Optional

MN: 223493

WWL Slip Coupler

2.25 in., Endless Thread

MN: 220739

1.25 in. Nylon Ball

MN: 101120

WWL45 Spindle Connect Drive Head

Endless Thread

MN: 220196

DT45 Sample Sheath

132 in., Endless Thread

MN: 212510

DT45 Sample Sheath

72 in., Endless Thread

MN: 231581

SDT45 Core Catcher Retainer

Asm, Endless Thread

MN: 217894

SDT45 Core Catcher Retainer

Asm, Endless Thread, Short

MN: 226147

DT45 Core Catcher

Short

MN: 226134

Rod Wiper Donut

4.5 in. (Weldment: 204387)

MN: 600448

Liner Cutter Replacement Blades

Quantity: 5

MN: 600985

Core Bags (SDT45, WWL45, 4X6)

8 in. flat x 725 ft.

MN: 106477

Thread Compound

1 Gallon

MN: 600729

4.5 in. Sonic Casing LHSL

120 in.

MN: 210172

4.5 in. Sonic Casing LHSL

60 in.

MN: 210495

4.5 in. Sonic Casing LHSL

24 in.

MN: 210563

4.5 in. Sonic Casing LHSL

12 in.

MN: 210602

4.5 in. Sonic Bit LHSL SDT45, Dome

4.93 in. OD, 2.65 in. ID

MN: 226395

4.5 in. Sonic Bit LHSL SDT45, Para

4.93 in. OD, 2.65 in. ID

MN: 210566

4.5 LHSL Box x 4.5 LHSL Pin

4.00 in. S-S, Sub saver

MN: 212679

WWL Weight Head

MN: 220023

WWL Connector Pin

MN: 220325

WWL Spearhead

MN: 220205

WWL Weight

150 lb.

MN: 220257

WWL Spring Cushion

Optional

MN: 223493

WWL Slip Coupler

2.25 in., Endless Thread

MN: 220739

1.25 in. Nylon Ball

MN: 101120

WWL45 Spindle Connect Drive Head

Endless Thread

MN: 220196

DT45 Sample Sheath

132 in., Endless Thread

MN: 212510

DT45 Sample Sheath

72 in., Endless Thread

MN: 231581

SDT45 Core Catcher Retainer

Asm, Endless Thread

MN: 217894

SDT45 Core Catcher Retainer

Asm, Endless Thread, Short

MN: 226147

DT45 Core Catcher

Short

MN: 226134

Rod Wiper Donut

4.5 in. (Weldment: 204387)

MN: 600448

Liner Cutter Replacement Blades

Quantity: 5

MN: 600985

Core Bags (SDT45, WWL45, 4X6)

8 in. flat x 725 ft.

MN: 106477

Thread Compound

1 Gallon

MN: 600729