Through Bore Drilling Systems: a New Drilling Option

Runia, John; Murphy, Eugene J.; Boyes, J. W.; Sutherland, George R.; Sim, David C.; Brown, Paul D.

doi:10.2523/79794-ms

“…Measurement performance was monitored in 7,000 wells over a four-year period before battery and memory modules were added for wireless conveyance. They also provide formation evaluation measurements in the Through Bore drilling system (2) .…”

Section: Openhole Memory Logging Toolsmentioning

confidence: 99%

A Pressure Activated Deployment System for Openhole Memory Logging Tools and its Application in Directional Wells

Spencer¹,

Ash²,

Elkington³

2004

IADC/SPE Drilling Conference

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fax 01-972-952-9435. AbstractOpenhole memory logging was introduced in 1999 as a more efficient alternative to pipe conveyed wireline logging. It was developed subsequently into a shuttle system that conveys logging tools inside drillpipe, and which provides formation evaluation logs after drilling to supplement basic real-time logging-while-drilling (LWD) data. The original shuttle design used a dart pumped from surface to move the logging string into open hole after the assembly reached TD. In a new development, the dart has been eliminated together with the associated pumping time. In its place is an electro-mechanical pressure activated release mechanism capable of simple twoway communication. The method has been used in trials to activate and deploy logging tools downhole, and to return status information to surface. It has the potential to be developed further for post-drilling real-time data transmission, and is a key component in a repeat formation pressure tester being developed for memory operations.

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“…There are several methods. (1,2,3) The system considered here is a shuttle that conveys the memory string inside drill pipe after drilling, so the tools not exposed to the well for extended periods, nor are they exposed to potentially catastrophic loads, giving reliability advantages relative to both LWD and wireline pipe conveyance. The greatest benefit is in wells that do not need to be petrophysically steered with real time formation evaluation logs, and/or where there is a high risk of damage or loss of the BHA.…”

Section: Introductionmentioning

confidence: 99%

Pressure Activated Deployment of Openhole Memory Logging Tools Into Directional Wells and Past Bad Hole Conditions

Spencer¹,

Ash²,

Elkington³

2004

Proceedings of SPE Asia Pacific Oil and Gas Conference and Exhibition

0

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractOpenhole memory logging was introduced in 2000, initially as a more efficient alternative to pipe conveyed quad-combo wireline logs in high angle and horizontal wells and wells with bad hole conditions. By 2001 a range of deployment techniques had been developed that provide high-quality, lowcost, post-drilling formation evaluation logs to supplement basic real-time data (such as navigation and gamma ray). Among the new techniques is a shuttle system that conveys memory tools rapidly to TD inside drillpipe, ideally as part of a wiper or check trip. In one manifestation a dart pumped from surface releases the logging string after the assembly reaches TD, then moves the string from the drillpipe into open hole. This variant has been successful in over 350 wells. In a new development the dart has been eliminated, replaced by an electro-mechanical pressure activated release mechanism that eliminates the dart pumping time, has better power management for longer operations, and is capable of simple two-way communications -a key element in a repeat formation pressure tester being developed for memory operations. A slim variant operates in wells down to 4¼inches bit size.

show abstract

Pressure Activated Deployment of Openhole Memory Logging Tools Into Directional Wells and Past Bad Hole Conditions

Spencer¹,

Ash²,

Elkington³

2004

SPE Asia Pacific Oil and Gas Conference and Exhibition

6

0

View full text Add to dashboard Cite

TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractOpenhole memory logging was introduced in 2000, initially as a more efficient alternative to pipe conveyed quad-combo wireline logs in high angle and horizontal wells and wells with bad hole conditions. By 2001 a range of deployment techniques had been developed that provide high-quality, lowcost, post-drilling formation evaluation logs to supplement basic real-time data (such as navigation and gamma ray). Among the new techniques is a shuttle system that conveys memory tools rapidly to TD inside drillpipe, ideally as part of a wiper or check trip. In one manifestation a dart pumped from surface releases the logging string after the assembly reaches TD, then moves the string from the drillpipe into open hole. This variant has been successful in over 350 wells. In a new development the dart has been eliminated, replaced by an electro-mechanical pressure activated release mechanism that eliminates the dart pumping time, has better power management for longer operations, and is capable of simple two-way communications -a key element in a repeat formation pressure tester being developed for memory operations. A slim variant operates in wells down to 4¼inches bit size.

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Through Bore Drilling Systems: a New Drilling Option

Cited by 5 publications

References 0 publications

A Pressure Activated Deployment System for Openhole Memory Logging Tools and its Application in Directional Wells

A Pressure Activated Deployment System for Openhole Memory Logging Tools and its Application in Directional Wells

Pressure Activated Deployment of Openhole Memory Logging Tools Into Directional Wells and Past Bad Hole Conditions

Pressure Activated Deployment of Openhole Memory Logging Tools Into Directional Wells and Past Bad Hole Conditions

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