On April 14th, the Welltec team in Angola had invited oil and gas professionals to attend a Technology Day, focusing on innovative intervention and completion technology. Taking place in Luanda, and with more than 35 participants, the event included various presentations and live tool demonstrations.
The current low oil price spurs operators to look at innovative and cost-effective intervention and completion methods, increasingly turning to new technology for help.
Michael Ipsen, Acting General Manager at the Welltec base in Angola, says:
“Both new and existing clients are hungry for technology that saves them time and cash. We offer the industry’s best and most reliable intervention tools, all designed with the overall purpose of increasing the client’s production, while reducing his cost”.
The event included a variety of tool introductions, including live demonstrations of conveyance and intervention tools as well as the
Flex-Well® completion concept with a specific focus on the Welltec® Annular Barrier (WAB®).
“For 13 years we have performed well interventions for Angola’s biggest operators, and we look forward to continue increasing their production with improved safety and saving them cost and time”, ends Michael Ipsen.
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LUANDA, Angola: Offshore West Africa, a deepwater well, was suffering from excessive gas breakthrough, limiting oil production. The gas was coning and producing from the top of an open hole gravel pack completion, bypassing the oil it was intended to energize.
To overcome this problem, the operator had been shutting the well in to allow the gas to re-saturate the oil in the reservoir. After some time the well was put back on line until the Gas-Oil Ratio (GOR) again became too high for the floating production storage and offloading (FPSO) facilities to accommodate. This cycle had been repeated numerous times while the operator searched for viable options to overcome this challenge.
The solution arrived in the form of a 525 foot (160m) long straddle isolation assembly which overcame the coning. Installation of this hardware was accomplished in sections and necessitated precise control of both depth and force; the former to ensure proper position downhole and the latter to avoid seal damage whilst stabbing and latching the individual segments, joint by joint.
The Well Tractor® and Well Stroker® provided the best solution for the operator; a combination which delivers precise, accurate depth and force control irrespective of distance in the well. Over a period of 15 days, multiple runs were made to ‘build’ the straddle assembly up, piece by piece in this live well.
The job was completed safely, 30 days faster than originally planned. This first of its kind operation in West Africa effectively shut off the gas breakthrough and increased oil production multifold. The efficient operations resulted in more than $15M saved in rig costs while the higher oil production generated more cash flow and improved overall efficiency of the FPSO asset.
Welltec® is the pioneer and the world’s largest provider of downhole robotic solutions for deployment, milling, clean-out and mechanical solutions. For more examples of innovative ways to solve your workover challenges through lower lifting costs, reduced capex and maintained production – https://www.welltec.com/reducecost
Offshore East Timor, an inflatable packer had released and migrated up the wellbore, passing through a flapper valve where it then got stuck. To complicate things, a hold-open sleeve dislodged during the migration and landed on top of the valve.
Utilizing a fleet of patented technology including the Well Tractor®, Well Miller® and Well Stroker®, the well was cleared of the inflatable elements and other debris. The series of operations took place in half of the anticipated time and without the need for a workover rig; significantly reducing costs versus budget.
“This was a job well planned and executed. What a great performance by Welltec, which resulted in the well being brought back on-line at 100 MMSCFD flow rate after two years of inactivity. 17 runs were conducted with zero misruns and no HSE or quality incidents, which is an outstanding achievement.” Completions and Well Intervention Coordinator, ConocoPhillips.
At Welltec® we are actively engaging with our clients to mitigate industry challenges and increase cash flow through production optimization, risk reduction, increased sustainability, improved safety and reduced costs. For more details regarding this or other examples of substantial value delivered with significant cost savings, please visit www.welltec.com/reducecost
Welltec® is the pioneer and world’s largest provider of downhole robotic solutions. Our game-changing technology leads the way in milling, clean-out and mechanical solutions for safe and cost effective well optimization to ensure maximum recovery while lowering lifting costs.