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TOPIC
"ReSOLVE Milling Tool - Electric Line Milling System with Intelligent Downhole Control"
Presented by: Ruben Martinez, Product Champion - ReSOLVE,
Schlumberger
HOUSTON RESEARCH CENTER [MAP]
11611 West Little York
Houston, Tx
Lunch will be available around 11:30am with the presentation following at or around noon.
ABSTRACT
The ReSOLVE Milling Tool employs a wheel-driven tractor and a rotary module driving a bit. The weight-on- bit (WOB) provided by the tractor is automatically controlled by a downhole closed-loop control system to optimize the milling process. It monitors the torque at the bit while milling, and adjusts the WOB applied by the tractor up to 800 times per second in response. This allows the tool to operate at the highest possible bit torque while preventing stalling.
On its first commercial operation in Norway in June 2012, the tool was employed to mill out hard barium sulfate scale over a long section of tubing in an offshore well to enable conveyance of a tubing patch. The operation was completed successfully after milling 4650' of scale in 81 operating hours (averaging 57 ft/hr) over a period of 6 days. When controlling WOB manually, the tool stalled repeatedly when experiencing torque peaks as it entered areas of greater scale accumulation. This led to lost time while recovering from stalls. After enabling the AutoMill control system, the tool was able to mill continuously for long periods with little user intervention.
The ReSOLVE Milling tool with the AutoMill control system operates efficiently by controlling WOB downhole on demand, and the precise control system allows it to operate at the limits of the system safely. This will save rig time by maximizing milling performance, but also allow successful electric line milling under conditions that were impossible before.
Author Bio
Ruben has been with Schlumberger for 17 years and is currently the Global Product Champion for the ReSOLVE Instrumented Wireline Intervention Service. He has been granted 9 patents and has several that are pending application. He holds a B.S. in Mechanical Engineering from U. of Houston, 1994 and a M.S. in Mechanical Engineering from Stanford University in 1996.
Intervention systems experience:
- Started the first wireline intervention R&D project in Schlumberger. Managed the team as it grew to a program of 6 projects.
- Ran the first ReSOLVE intervention operations, and have been on multiple jobs offshore and on land in a training or advisory role. Have also monitored key jobs worldwide remotely in real time and advised engineers on tool operation and log interpretation.
- Current role is focused on business development, identifying new applications for existing tools, and identifying needs for new products.
REGISTRATION
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