Page 63: of Offshore Engineer Magazine (Sep/Oct 2013)

62 64

can drastically increase the cost of Exploration obtaining a core. The tool offers slow More carbonate formations are being depressurization without any associ- drilled offshore in a presalt environ-

GAME ated rig time cost.The tool maintains ment, like those off Brazil and Africa. the core at a predetermined pressure These formations are naturally frac- and is placed on the rig foor while the tured, and are diffcult to core. For

CHANGER. next downhole operation begins. The instance, while cutting a 30m core, an tool is capable of depressurizing the operator may cut 8-10m of core before core over days not hours, while still jamming-off. The core then must make

POWER collecting all gas and liquids migrating a long trip back out of the hole, frus- from the core. Depressurizing the core trating operators because of the costs. becomes an offine procedure, dramati- In this situation, the tool can remove

AT THE cally decreasing the costs, to obtain the signifcant time and expense. Instead added beneft. of taking 24-36 hours to trip out, it takes only 90 minutes on wireline.

This coring technology cuts larger

SHOE.

Using the wireline platform, as soon samples (76mm-diameter by 3m-long) as a jam occurs, the wireline is dis- and catches fuids that would normally patched down the hole to pick up the be lost during regular coring operations.

SHALERUNNER™ and core and bring it out.

These fuids provide data about the

TURBOCASER™ EXPRESS reservoir conditions, allowing operators to make quicker decisions and avoid rig

A frst for the industry are reaming systems to drive downtime.

The tool recently completed the frst your casing and completions

While the technology is offered for ever 125ft wireline run in a shale gas to depth. the conventional coring platform, it reservoir, for a major operator in the has proven to be the most cost effec- US. Cutting this core length amounts to tive on the QuickCore wireline coring a 35% increase in core previously platform, which was specifcally cut over the same recovery time. The NO STRING designed to enhance the overall speed operator has used the 90ft

ROTATION of the coring process. The tool secures assembly on a number of other wells,

REQUIRED the core in a steel inner tube that achieving an average 99.25% recovery holds a thin aluminum sleeve, pro- across these wells, producing consis- ELIMINATE tecting the core from fuid invasion, tent results. Prior to this well, the lon-

WIPER TRIPS while still enabling gases to slowly gest wireline core cut was 60ft with a vent. The aluminum sleeve also serves 3in. diameter. The larger diameter core ALL YOU NEED as a container in which the core can and 125ft wireline run presents opera-

IS MUD TO be left in an undisturbed state until tors with excellent analytical options.

POWER YOUR the samples are taken to the lab for The larger diameter core aids in the

SYSTEM analysis. recovery process while improving core

When taking four or fve cores in quality. FIELD PROVEN conventional coring, you have to be ready to trip four or fve times. Using Doug Kinsella is manag- this system, the assembly is tripped ing director of Corpro. He into the hole, cores are cut, never trip- began his career in 1995 ping any pipe, just using a wireline, with Baker Hughes, where and then tripped back in the hole he focused on coring. He again. On an average well with four to joined Corion in 2000, fve cores, this tool can cut the number which was ultimately acquired by NOV. GAME CHANGING of trips from ten to two. In 2009 Kinsella establish Quest

In addition to signifcant time and Coring, in Edmonton, Alberta, and related cost savings, these tools pro- under his direction as CEO, the

CASING MOTORS AND duce a safer work environment. It is company developed QuickCore and

COMPLETION MOTORS.

well known the majority of injuries on QuickCapture. www.deepcasingtools.com a rig are from tripping drill pipe—due Quest Coring was acquired by to the number of activities happening Reservoir Group in May 2012, where simultaneously and number of person- Kinsella continues to expand Corpro’s nel involved. Because the tool reduces technologies and services. Kinsella both the number of wireline trips and earned a mechanical engineering drillstring trips required, it minimizes degree from Northern Alberta Institute injury potential. of Technology.

oedigital.com September 2013 | OE 65 062_OE0913_D&C Corpro.indd 65 8/18/13 8:30 PM