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We are continuously looking at our stable of products to either innovate new technologies for the growth of the industry or to re-engineer our existing innovations to make it more relevant for you, our customer. In this issue of Scomi Oiltools Flowline, we bring you two more technologies, one each in drilling waste management and drilling fluids. Drilling waste management talks about automating tank cleaning, taking only a fraction of the usual time for cleaning whilst drilling fluids explains a proprietary laboratory device for testing of screen plugging designed at our Global Research & Technology Centre in Malaysia.

Please feel free to forward this e-newsletter and if you'd like more information, we are always contactable at: info@my.scomioiltools.com. For further information on the featured technologies, do contact our respective product groups via the email provided at the end of each article.

  Automating Tank Cleaning  

Tank cleaning is a product and service that has been used in various markets for a number of years but with varying degrees of success and not using the available technology to its full potential. Traditionally, it has been done with readily available tank cleaning nozzles and small air diaphragm pumps or centrifugal pumps, which generally does not supply an adequate volume or pressure of wash solution. Hence, this method often results in man entry into tanks to clean up solids and mud not removed by the cleaning process. And so there was the push to innovate a system that would reduce the time taken to clean mud tanks and thus minimise any potential non productive time and also address the QHSE issue of human entry for cleaning.

Scomi Oiltools' response was to develop the Automated 'Clean in Place' Tank Cleaning system. This closed loop automated system completely eliminated human entry to the tanks, greatly reduced the time required to clean mud tanks on offshore drilling rigs and reduced the amount of waste generated when cleaning mud tanks.

The tank cleaning system developed and installed on the Sedco 706 includes a high pressure pump, wash nozzles and return circulation system that has successfully cleaned individual tanks in 30 min to 60 min depending on the size of the tanks. During the cleaning of the tank absolutely no human entry into the tanks was necessary and a greatly reduced volume of waste was generated for disposal. The pictures below are the 200 bbl mix tanks before and after cleaning on a 30 min cycle.

Before After

Please click here to read more about this technology.

For further information, kindly contact: dwm@my.scomioiltools.com

  Improved Completion Economics in Southeast Asia  

Non-gravel packed open hole completions have become a preferred technique when engineering economical high angle and horizontal wells. For both conventional and expandable sand screen installations, selection of screen type and opening is critical to retain sand and avoid excessive damage to downstream production equipment. At the same time, plugging of screens by drilling fluid components or produced sand, must be minimised to prevent reduction in produced oil. A middle ground of good control of sand and unimpaired well productivity is sought.

Typically, a simple test device, the production screen tester, or PST, has been used as a quick field test of plugging just prior to installing screens in a well. The test itself records the time required for a volume of mud to flow at low pressure through an actual sample of the sand control screen. Today, in Southeast Asia, both field and laboratory tests are used to quantify mud damage to completion screens early in the well planning and design phase.

At Scomi Oiltools we now routinely apply a proprietary laboratory device which quantitatively evaluates run-in-hole damage and models potential production screen damage which often occurs after screen placement. Scomi's Global Research & Technology Centre ("GRTC") has designed and developed a novel filtration and flow system using a specialised screen-holder that models an integrated sequence of cake building, screen running, and flowback procedures. Thus, a detailed evaluation for both conventional and expandable screens is possible without repeated assembly and disassembly causing disturbance of a developed mud cake.

GRTC is now conducting a study for Sarawak Shell Berhad using this device to formulate a suitable synthetic-based drill-in fluid to construct a gauge hole, with minimum formation damage, and unrestricted production through a range of sand screen types.

Both drilling and completion engineers will appreciate the benefits provided by Scomi's techniques and prototype equipment which are used to design and develop fluid formulations for water based, synthetic based and formate muds.

Mud Cake Build-Up and Flowback Test Setup

Please click here to read more about these novel techniques and equipment.

For further information, kindly contact: drillingfluids@my.scomioiltools.com

In The Media
Scomi clinches RM15.3m contract in Venezuela
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