Momot, Fabien (PathControl) | Humbled, François (RMI) | Garbers, Martin (TOTAL SA) | Shabanov, Sergey (TOTAL SA) | Gonsette, Alexandre (RMI) | Sikal, Anas (PathControl) | Cousso, Olivier (TOTAL SA) | Reynaud, Denis (PathControl)
Improvements in measurement while drilling (MWD) and service reliability over the past 25 years has made MWD tools the most cost-effective method for calculating wellbore survey position while drilling. However, with more complex well trajectories required to reach more challenging targets, reducing lateral uncertainty has also become a new challenge.
It is accepted that no geomagnetic model can properly account for the geomagnetic spatial and temporal local complexity for calculating MWD geomagnetic reference values. It is also well known that measuring local geomagnetic reference requires frequent absolute measurements in order to perform QA/QC, and that those absolute measurements could only be done manually so far, and consequently very few magnetic observatories are in operation. Therefore, solutions have been engineered to enhance the geomagnetic reference model with In-Field Referencing (commonly termed as IFR). Then, its combination with Multi-Station Analysis (MSA) correction algorithms has become a common method for addressing and reducing most of the correctable MWD azimuth, survey position error and lateral uncertainty.
Enhanced wellbore positioning could be a real game changer to achieve in-fill wells with high collision avoidance constraints, to develop projects that require high precision to hit the reservoir targets, or those located in specifically difficult areas, from a geomagnetic perspective, such as high latitudes and zones with crustal anomalies.
This paper presents the results of the new temporal magnetic field method "IFR4D" that was successfully used to drill two onshore wells in Argentina. The wells targeted the Vaca Muerta shale play, and demonstrated the ability to improve the wells absolute positioning while reducing the lateral aspect of "ellipse of uncertainty" by a combination of: A unique autonomous, remote real-time observatory developed to monitor and allow corrections for the local geomagnetic vector with frequent absolute control of the local and temporal geomagnetic vector field (Dip, Declination and Field Intensity), and A dedicated MSA algorithm defined to use local and temporal In-Field Referencing (IFR2) data at the position and time for each MWD survey station.
A unique autonomous, remote real-time observatory developed to monitor and allow corrections for the local geomagnetic vector with frequent absolute control of the local and temporal geomagnetic vector field (Dip, Declination and Field Intensity), and
A dedicated MSA algorithm defined to use local and temporal In-Field Referencing (IFR2) data at the position and time for each MWD survey station.
Once installed on location, the autonomous observatory measured all geomagnetic properties (Dip, Declination and Field Intensity) with no personnel onsite for more than one year, delivering a new level of geomagnetic accuracy to use as the standard reference for the life-time of the field. The data from the observatory was then used remotely while drilling to correct and optimize wellbore position and reduce the lateral aspects of the "ellipse of uncertainty" (EOU).
Guest editorial - No abstract available.
This paper represents a summary of the discussion and findings from a breakout session held during the two-day SPE Applied Technology Workshop on Accelerating Technology Acceptance in the industry.Besides understanding current practices, the purpose of the session was to prioritize the steps that should be taken to achieve this goal, and to outline how best to assess the new technology needs of the industry.In addition to outlining the most salient points from the discussion on existing practices among oil companies and technology providers, also addressed are a series of recommendations for accelerating the acceptance of technology.The analysis includes a prioritization of the various suggestions given during this session, with a comparison made of the importance placed on each recommendation by operators versus technology providers.Some differences in opinion did exist.Based upon all information collected, it is clear that the road to accelerated technology acceptance involves commitment from leadership in both oil and technology provider companies, clear identification of the value propositions existing for new technology, and better communication between users and technology developers to insure that the appropriate R&D efforts are made to address the increasingly stringent exploration and production applications around the world.How SPE can assist in this important effort is also addressed.
One of the key breakout sessions in the two-day SPE Applied Technology Workshop on Accelerating Technology Acceptance was to evaluate the process by which prioritization and assessment of candidate technologies is performed for determining market potential and therefore which technologies should be developed.It was opinioned during the session that in some cases suppliers choose the wrong technology to develop, while in other situations the acceptance cycle of a viable new technology is painstakingly slow.At the initiation of the session, four specific objectives were identified for addressing issues related to prioritization and assessment:
Determine how communication between the technology providers and end-users can be improved.
Discuss ways in which the market potential for a candidate technology can be determined early using input from oil company personnel.
Identify other practices that will increase the overall success and rate of acceptance for new technology introduced into the upstream sector.
Develop a set of recommendations for optimizing the process of prioritization and assessment of new technology.
Reasons for Slow Technology Uptake
The initial part of the session involved a detailed discussion of existing practices for the selection and development of new technology within the upstream petroleum industry.Significant identified obstacles included inadequate communication between oil company personnel responsible for the ultimate acceptance of the new technology and the technology providers charged with developing and introducing the new product or service.Another problem area was a disconnect in communication in the case of technology providers who are either too internally focused and therefore rarely ask for, or pay attention to, feedback from the oil companies. Yet another problem area was the utilization of informal or inadequate methods for realistically assessing the value proposition for the candidate technology.The end result of all these issues was well expressed by one participant: "We spend a good deal of money on things that no one asked for."It is no secret that the income contributions from technologies introduced during the last three to four years by medium and large oil service companies is inadequate at best when compared to income derived from "legacy" products and services.
Guest editorial - No abstract available.