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DI 2.25in Grout Sub


Pressure Grout your DI Logged Borehole During Tool Retraction



DI Grout Sub Overview



The Direct Image® (DI) Grout Sub (222346) will attach to any 2.25 in. DI tool string and allow you to easily grout your borehole from bottom up.

When mapping through high-level contamination or penetrating confining units, contaminants can move down the borehole spreading the plume if they are not properly sealed.  Being able to grout your DI logged borehole immediately after logging ensures that the actual borehole gets completely sealed, eliminates vertical transport of contaminants, and avoids grout bridging.  Using the DI grout sub will save project time and money by eliminating the need to re-drill borehole solely to grout which may even require additional rigs to complete. Geoprobe® has successfully post-log grouted numerous DI logged boreholes utilizing both bentonite and neat cement grouts including in areas where pressurized natural gas zones over 100 ft. deep would have blown out the hole if the DI tools needed to be removed to redrive grouting tools.  By immediately grouting with the inline grout sub blow outs were avoided and time was saved.

The DI Grout Sub is inserted above the connection tube on any 2.25 in. Direct Image® tool string. The Grout Sub utilizes a separate grout line eliminating much of mess and cleanup usually associated with grouting. Its three-winged design creates pathways for the grout to flow down and around the probe on retraction so you can be assured grout flows to the bottom of the hole.

The operator will attach the designated grout line to a GP300 or GP350 grout machine. Prior to advancing the tool string the grout line is charged with water, a rubber plug is pressed into the grout port and held in place with a stainless steel tab. Once the probe reaches the targeted depth it is retracted approximately 1 ft. to bend back the stainless steel tab. Water is then pumped to dislodge the grout plug (by using a pressure gauge on the grout pump hydraulic line it is easy to determine when this happens). The rubber plug and stainless steel tab are expendable components for each boring.  Grout can now be added to the pump and pumped down hole. Post log grouting can only be performed with the 2.25 in. tool strings.

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DI 2.25in Grout Sub


Pressure Grout your DI Logged Borehole During Tool Retraction

DI 2.25in Grout Sub

MIHPT logging with the grout sub

MIHPT logging with the grout sub

MIHPT logging with the grout sub

MIHPT logging with the grout sub

MIHPT logging with the grout sub

MIHPT logging with the grout sub

Filling the grout line with water prior to logging

Filling the grout line with water prior to logging

Purging grout from the line after retraction

Purging grout from the line after retraction

MIHPT logging with the grout sub

MIHPT logging with the grout sub

Finished logging and grouting an MIHPT boring

Finished logging and grouting an MIHPT boring

MIHPT logging with the grout sub
MIHPT logging with the grout sub
MIHPT logging with the grout sub
Filling the grout line with water prior to logging
Purging grout from the line after retraction
MIHPT logging with the grout sub
Finished logging and grouting an MIHPT boring

Pressure Grout your DI Logged Borehole During Tool Retraction

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DI Grout Sub Overview

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The Direct Image® (DI) Grout Sub (222346) will attach to any 2.25 in. DI tool string and allow you to easily grout your borehole from bottom up.

When mapping through high-level contamination or penetrating confining units, contaminants can move down the borehole spreading the plume if they are not properly sealed.  Being able to grout your DI logged borehole immediately after logging ensures that the actual borehole gets completely sealed, eliminates vertical transport of contaminants, and avoids grout bridging.  Using the DI grout sub will save project time and money by eliminating the need to re-drill borehole solely to grout which may even require additional rigs to complete. Geoprobe® has successfully post-log grouted numerous DI logged boreholes utilizing both bentonite and neat cement grouts including in areas where pressurized natural gas zones over 100 ft. deep would have blown out the hole if the DI tools needed to be removed to redrive grouting tools.  By immediately grouting with the inline grout sub blow outs were avoided and time was saved.

The DI Grout Sub is inserted above the connection tube on any 2.25 in. Direct Image® tool string. The Grout Sub utilizes a separate grout line eliminating much of mess and cleanup usually associated with grouting. Its three-winged design creates pathways for the grout to flow down and around the probe on retraction so you can be assured grout flows to the bottom of the hole.

The operator will attach the designated grout line to a GP300 or GP350 grout machine. Prior to advancing the tool string the grout line is charged with water, a rubber plug is pressed into the grout port and held in place with a stainless steel tab. Once the probe reaches the targeted depth it is retracted approximately 1 ft. to bend back the stainless steel tab. Water is then pumped to dislodge the grout plug (by using a pressure gauge on the grout pump hydraulic line it is easy to determine when this happens). The rubber plug and stainless steel tab are expendable components for each boring.  Grout can now be added to the pump and pumped down hole. Post log grouting can only be performed with the 2.25 in. tool strings.

Grout Sub

DI Grout Sub Overview


The Direct Image® (DI) Grout Sub (222346) will attach to any 2.25 in. DI tool string and allow you to easily grout your borehole from bottom up.

When mapping through high-level contamination or penetrating confining units, contaminants can move down the borehole spreading the plume if they are not properly sealed.  Being able to grout your DI logged borehole immediately after logging ensures that the actual borehole gets completely sealed, eliminates vertical transport of contaminants, and avoids grout bridging.  Using the DI grout sub will save project time and money by eliminating the need to re-drill borehole solely to grout which may even require additional rigs to complete. Geoprobe® has successfully post-log grouted numerous DI logged boreholes utilizing both bentonite and neat cement grouts including in areas where pressurized natural gas zones over 100 ft. deep would have blown out the hole if the DI tools needed to be removed to redrive grouting tools.  By immediately grouting with the inline grout sub blow outs were avoided and time was saved.

The DI Grout Sub is inserted above the connection tube on any 2.25 in. Direct Image® tool string. The Grout Sub utilizes a separate grout line eliminating much of mess and cleanup usually associated with grouting. Its three-winged design creates pathways for the grout to flow down and around the probe on retraction so you can be assured grout flows to the bottom of the hole.

The operator will attach the designated grout line to a GP300 or GP350 grout machine. Prior to advancing the tool string the grout line is charged with water, a rubber plug is pressed into the grout port and held in place with a stainless steel tab. Once the probe reaches the targeted depth it is retracted approximately 1 ft. to bend back the stainless steel tab. Water is then pumped to dislodge the grout plug (by using a pressure gauge on the grout pump hydraulic line it is easy to determine when this happens). The rubber plug and stainless steel tab are expendable components for each boring.  Grout can now be added to the pump and pumped down hole. Post log grouting can only be performed with the 2.25 in. tool strings.







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