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Monday, 29 March 2010

ROGTEC Talks Drilling Technology for the Verkhnechonskoye Field with Schlumberger D&M


Referring back to the VCNG article; What do you feel were the key factors for success when working with VCNG?

I feel some of the key factors contributing to this successful deployment would be having a systematic approach to the project. We fully employed the Schlumberger D&M Management System, this included training and planning the personnel (Field Operations and Maintenance). We also had a very methodical approach towards BHA design, BHA selection and ultimately we delivered on our promises with the system. Finally we had great communication with the client over the entire course of the project.

All of this has resulted in a step change in the overall drilling performance of TNK-BP VCNG. Alongside this we also had great success with the launch of the PowerDrive675 in the Vankorskoe field for Smith Production Technology and Rosneft in 2007.

Roughly how long has the tool been in use in Russia?

The first PowerDrive job we did in Russia was for Shell, on an offshore field in Sakhalin, in 2005. PowerDrive is now a core service for Schlumberger D&M in the whole of Russia. We have all the components in Russia to execute this service successfully. We have working tools across the whole region with local Russian expertise capable of executing these jobs. We also have local maintenance facilities set up to service the tools, even remotely. We also have a centralized Operations Support Center to monitor all jobs in real time. This is extremely important for our clients as it translates into better service quality and less cost. With regard to total meters drilled, we have drilled more than 350,000 meters with PowerDrive in Russia alone. Globally, the tool was first launched back in 2001.

What would you say are the key advantages that PowerDrive brings to operators who deploy it?

Three of the key advantages are:

The time savings that the tool brings. You get improved ROP and there is no lost time through sliding plus there are multiple benefits through drilling efficiencies.

Improved well bore conditions where you have smoother wellbores with less tortuosity. This also simplifies wellbore cleanout and reduces completion costs.

Finally there is generally a reduced risk with the well bore and you can also minimize the risk of stuck pipe. PowerDrive is a unique RSS tool that has a fully rotating system, this helps reduce the stuck pipe risk. It is part of a flexible system that can combine with MWD/LWD sensors. With Real Time measurements close to the bit, you can enable processes, as discussed in the VCNG article, which greatly improve well placement and improve trajectory control. For the operator this results in minimizing drilling cost and maximizing production through a step change in drilling performance and horizontal well placement.

What other regions in Russia or regional formation types would most benefit from this system?

PowerDrive has been used by the following operators:

  • Rosneft on the Vankor Project
  • Rosneft on the SMNG Project
  • TNK-BP on the VCNG and Samatlor Projects
  • Lukoil on the Korchagina Project
  • Lukoil on the Usinskoe SAGD Project
  • NMNG on the Yuzhno-Khalchuyu, Yareyu and Toravey Projects
  • Total on the Kharyaga Project
  • SEIC in Sakhalin
  • ENL in Sakhalin

There are also several smaller projects in West Siberia that are benefiting from the PowerDrive Service. It is formation independent and will bring significant benefits to all potential clients, not only Oil Companies but also General/Drilling Contractors.

You briefly mention the benefits of the Real Time solutions in the article. Could you expand on this?

The Real Time capability of PowerDrive has the biggest impact in improved Real Time decision making. This enables better Well Placement resulting in increased reservoir contact (increased NTG). Within the drilling parameters, optimization enables better drilling performance (increased ROP). So the client has a higher quality well bore, delivered in less time with increased contact with the payzone.

General speaking and not referring to the case study, what level of cost saving can the tool bring to an operator?

Operators are mainly interested in two key points which we focus on to the highest level: decreasing cost per meter and increasing production. We are decreasing the cost per meter by increasing the commercial ROP, which effectively means reducing the AFE by saving days.
This can be done in multiple ways; increasing the ROP during drilling. Reducing the flat times (better planning and better wellbore conditions). Reducing unplanned events like stuck pipe through technology applications like PowerDrive and the application of DCS Domains like GeoMechanics.

The level of saving could be different depending on the type of project and the complexity of the formations or reservoirs. However, based on our worldwide experiences, we have successfully delivered results in drilling performance and cost saving that exceeded our customers' expectations.

An example of this would be in deepwater or arctic offshore projects, where a single day of saving could means a significant dollar saving due to extremely high rig rates. The other major benefit to the client is increased production. By bringing a field on stream earlier the operator benefits from this production.

The production is also increased through more efficient well placement.

What is the next step forward for you on the technology side?

The next step in further drilling optimization for our clients in Russia is the introduction of the PowerDrive Vortex in several locations. PowerDrive Vortex is a service that combines PowerDrive with a high power motor (A700GT) to provide extra drilling energy to the system for another step change in drilling performance. PowerDrive Vortex is designed to drastically reduce and eliminate the stick and slip effect thereby improving the efficiency of energy transfer to the drilling bit. The combination of Vortex with the latest MWD tools and telemetry support (Orion compression) allows for faster downlink of steering commands and directional surveys transmission, making the PowerDrive services more effective than ever.

Having started out as a Field Engineer in Abu Dhabi and Iran, Chin Seung Way has worked for Schlumberger in Egypt, China and Houston. Since 2009, he has been Operations Manager for Drilling & Measurements, Eastern Siberia, managing business of over $120M and one of the most challenging operations of Schlumberger in Russia.
posted by The Rogtec Team @ 15:21 

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