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DEMO2000 - Drilling Mud Process Control
El Boubsi, Rachid (Huisman) | Andresen, Jan Atle (Huisman) | van Og, Geertjan (Huisman) | Bjørkevoll, Knut S. (SINTEF Petroleum) | Nybo, Roar (SINTEF Petroleum) | Brevik, Jan Ove (Statoil) | Nygaard, Gerhard (Cybernetic Drilling Technologies) | Smith, George G. (Intelligent Mud Solutions)
Abstract Managed pressure drilling (MPD) is an adaptive and sophisticated drilling process used to control the downhole and annular pressure. Mud management could enhance MPD as the downhole pressure is dependent on mud parameters such as mud density and rheology. Therefore, a step-change is needed in drilling process control, to enable consistently high performance, accurate pressure control and reduced risk of unwanted effects. Advances in process control have been made, but risk reduction and optimization of the drilling process is still a major challenge in the drilling industry. A missing piece in considering the process-control puzzle is the in-situ determined drilling mud characteristics. Without accurate knowledge of mud properties and cuttings contents or without an ability to adjust the mud in real-time, a control system cannot reliably maintain bottom hole pressure or ensure a smooth flow of cuttings. The use of real-time density and rheology measurements in combination with a model that optimize the drilling operation by adjusting the mud will be a radically new innovation on the drilling market. To complete the puzzle, a demonstration of a pilot unit will be carried out. The unit combines monitoring of mud and cuttings with wellbore hydraulic modelling and a control system that adjusts mud properties in real-time. The control setup will strive to keep the drilling operation within its operating envelope with respect to cuttings transport and bottomhole pressure. The demo project will construct such a system from existing components. Its focus will be on demonstrating the potential of a fully integrated drilling system. In particular to demonstrate that mud properties can be adjusted automatically based on real-time mud measurements. This demonstration project will be carried out in collaboration between Huisman, Statoil, SINTEF, Intelligent Mud Solutions (IMS) and Cybernetic Drilling Technology (CDT), with financial support from the Norwegian Research Council. The demonstration project will take place at Huisman Innovative Tower in the Netherlands, where a full scale facility with drilling rig and a 400 m deep test well goes operational in Q1 2017. Available technology from the project partners covers many of the process control components. Such as a commercial hydraulic flow model for downhole pressure predictions provided by SINTEF, a mud density and rheology sensors provided by IMS with software by CDT and a mud treatment system of Huisman's design, allowing for real-time adjustment of mud.
- Europe > Norway (0.47)
- Europe > Netherlands (0.34)
Copyright 2014, Society of Petroleum Engineers This paper was prepared for presentation at the SPE Bergen One Day Seminar held in Grieghallen, Bergen, Norway, 2 April 2014. This paper was selected for presentation by an SPE program committee following review of information contained in an abstract submitted by the author(s). Contents of the paper have not been reviewed by the Society of Petroleum Engineers and are subject to correction by the author(s). The material does not necessarily reflect any position of the Society of Petroleum Engineers, its officers, or members. Electronic reproduction, distribution, or storage of any part of this paper without the written consent of the Society of Petroleum Engineers is prohibited. Permission to reproduce in print is restricted to an abstract of not more than 300 words; illustrations may not be copied. The abstract must contain conspicuous acknowledgment of SPE copyright. Abstract Extended-Reach Drilling (ERD) with narrow pressure margin or uncertain geo-pressure is a challenge with respect to accurate pressure control. The back-pressure Managed Pressure Drilling (MPD) method has been widely used in drilling operations with the aim of controlling annulus pressure within safe bounds, and may also be applicable for ERD wells. However, the ability to control the pressure accurately is limited by several factors. Some of which are related to back-pressure MPD operations in general and some of which are more specific to ERD wells. In this paper a study is presented on how pressure control is affected and sometimes limited by the actual data availability and quality, equipment, hydraulic models, control algorithms, and downhole conditions during an MPD operation in an ERD well.
- Europe > Norway > North Sea > Central North Sea > Central Graben > PL 019B > Block 2/1-3 > Gyda Field > Zechstein Formation (0.99)
- Europe > Norway > North Sea > Central North Sea > Central Graben > PL 019B > Block 2/1-3 > Gyda Field > Ula Formation (0.99)