PetromacConveyance System for Open-hole Wireline Logging

a PARADIGM change for the industry

• The option to run any wireline tool,

with confidence, in high angle wells.

• Improve the mechanics of wireline

logging with auxiliary devices -

eliminate tool hold-up, reduce logging

tension, prevent tool “stick-slip” and

differential sticking

• Optimise log data quality with setup

and orientation.

Engineered for open-hole and focused on optimising log data quality, the Petromac conveyance system is “best-in class”

The conveyance system has been specifically developed to address the

limitations of wireline logging in challenging open-hole conditions.

Obstructions formed by ledges, washouts and cuttings debris are easily

navigated and conventional wireline logging is feasible in very high angle

wells. High logging tensions, tool stick-slip and differential sticking are

virtually eliminated with resulting gains in operational efficiency.

The system enhances log data quality with tool sensors run in the optimal

configuration and orientation. Sampling can be undertaken from the

“undamaged” high side of the wellbore.

Tool Taxi

• Fits 8 ½" hole and larger • Lowest friction in class - 6" wheels • Active bearing lubrication system • 70deg deviation in open hole • Orientates tool sensors • Locates positively to C-spanner holes • Available with ½" and 1 ½" standoff • Light, robust, transportable & easily serviced

Tool Guide

• Fits all hole sizes- adjustable • Fits all through wired tools • Will negotiate a 4 ½” step ledge (8 ½” hole) • Light, transportable (<15kg) • Special models for ‘bottom-only’ tools

Guide is adjustable to suit hole size and standoff

Tool Taxi is positively attached on toolstring

Tool Taxis orientate the toolstring and guide

Guide SKIS over ledges

Guide runs seamlessly over a step ledge - 4 ½" high

large diameter Tool Taxi wheels reduce drag (6'')

Tool Taxi carries toolstring above wellbore wall - bridging cuttings

Conveyance System Features

“pressure compensated

bearing lubricator

stable orientation at lowest COG – running on wheels self righting

½" 1½"

large 6” diam. wheels

Tool Taxi – designed for open hole

narrow contact patch – low

wheel slippage

big clearances - no jamming

Oil Industry Feedback

Thanks you for your assistance in logging our recent exploration well

here in Vietnam. As far as I am concerned the application of your Tool

Taxi and hole Finder is a game changer for wireline logging. This my first

experience of running your equipment and I have to say I am mightily

impressed. Over the course of 5 days logging to 5800mMD at 55 deg

tangent angle, 5 separate logging runs including the usual high risk

logs of MDT and MSCT, the logging tools went in and out more or less

trouble free on every run. Admittedly we had SBM on our side and a

stable wellbore, but still to have this amount of trouble free logging over

this period of time is outstanding. Of particular interest to me was the

capability to orientate the pressure sensing tools to the high side for

clean pressure sensing and easy drop off after taking pressures. This

is something that is of high value in a deviated wellbore in my opinion.

And all of this was done without a wiper trip either before or during the

extensive logging program.

I am not renown for offering glowing praise, but this is one of those rare

occasions where it is due. For sure we will be using your equipment

again at every opportunity.

Bob Miller, Drilling Superintendent, Talisman Vietnam Limited, October 2014

Kea Petroleum recently utilised the Petromac Conveyance System to

undertake three OH logging runs in a 55deg inclined hole. Due to drilling

problems, the hole was in poor condition with significant cuttings beds

and a severe low-side washout. All three tool runs, including the MDT,

reached TD. Without the Petromac system, we would have most certainly

not got the tools past the washed out section, and missed our zone of

interest.

Hamish Gordon, Exploration manager, KEA petroleum, July 2014

The new Petromac Conveyance System is by far the best tool we’ve used

to date to assist in onshore Taranaki OH-logging. With classic S style,

high angle wells; some approaching 60degrees, we’ve always struggled

to get to bottom with the tool-string and that’s even after a quality wiper

trip. With the Petromac hole finder and tool taxi wheels, those problems

are effectively gone. Cuttings on the low-side of the hole from typical

Miocene sediments, ledges borne about from borehole breakout, you

name it…no problems! Best of all, down the first time and out soon after

equals saved time and saved money

Carey Davis, TAG Oil Exploration & New Ventures Manager, October 2013

PetromacStephen McCormick, Managing Director Petromac Ltd, 21 Hawke Cres, Beachlands, Auckland 2018, New Zealand Mob +64(0)210549158 Tel +64(0)95366621 Email: steve@petromac.co.nz www.petromac.co.nz

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