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Collaborating Authors
Ufondu, Kenechukwu
Abstract This paper discusses the added value of a new approach to exiting an existing wellbore, where the normal practice forces the plug and abandonment (P&A) of the existing lateral before cutting the window into a new lateral, particularly when an off-bottom cemented (OBC) liner is required. The new approach includes the construction of a Technology Advancement of Multilaterals Level 4 (TAML 4) junction to maintain well integrity and the successful development of a re-entry window that allows access to both the existing and the new slim wells. Not only has this technique unlocked massive potential, but it has also led to an enhancement in the utility and reduction in capital expenditure (CAPEX). The successful Level 4 sidetrack and re-entry window deployment is directly related to the robust system design. The application developed includes an anchor with a guide and high-torque capability, a TAML Level 4 junction created in a shape that will lead to smooth, repeatable access in the future, and a customized re-entry window system to further maximize the well potential. The true value is in allowing access to both the existing and the newly drilled lateral without using a rig or decompleting the well. Such operations use tubing exit whipstock (TEW) and pressure isolation sleeves, both of which can be run and retrieved in a rigless manner. The rigless access has allowed the existing lateral to be used as an observation well. Using permanent downhole gauges (PDHGs) enables real-time monitoring of the pressure and temperature and periodic logging to evaluate the reservoir. The newly drilled lateral can be the primary producing lateral; rigless access equally helps recover the well in case of any production challenges. The newly designed multilateral is a game changer for both mature and new developments because it maximizes reservoir production and helps reduce CAPEX by requiring fewer wells to be drilled. The improved well integrity minimizes well workover operations, which creates cost savings. This paper discusses the following aspects:A successful Level 4 junction construction from a slim re-entry existing/mature well. Repeatable accessibility to the lateral and motherbore. Meeting the motherbore objective as required. Delivering an OBC lateral liner and maintaining the well integrity.
Anchor, asia government, cement, challenging formation resulted, completion, Directional Drilling, drilling operation, integrity, junction, lateral, level 4, liner, middle east drilling technology conference, packer, real time system, reservoir, slickline, successful sidetrack, taml level 4, tEw, uae government, Upstream Oil & Gas, well-a, whipstock
SPE Disciplines:
- Well Drilling > Drilling Operations > Directional drilling (1.00)
- Well Completion (1.00)
- Production and Well Operations (1.00)
Abstract High pressure and high temperature (HPHT) oil and gas wells have rapidly become a regular occurrence over the last decade and continue to push the boundaries of technology development where enhanced elastomers and metallurgy for completion tools are required. This paper delivers a clear approach to streamlined deployment and value-added techniques, which were utilized to successfully install the first HPHT openhole multistage fracturing system (MSF), combined with the first HPHT monobore liner hanger completion system. A major technical challenge is the identification and qualification of 15 Kpsi openhole multistage fracturing completion equipment, which is required for the successful exploitation of tight and unconventional HPHT reservoirs. The integration of two technologies from two service companies, qualified to overcome this requirement, called for unprecedented well planning; from engineering design assessment, systems integration appraisal, risk assessment with contingency planning to repeated modeling (geomechanic, drilling fluid, etc.), completion well on paper exercises, with planning improvements in well design and drilling equipment to achieve this breakthrough. As with any technology, operational design, planning, and execution play key roles on many levels in ensuring successful deployment. This can only be achieved through stakeholder acceptance of relevant advanced technologies, globally accepted best practices, collaboration of industry experts and precise planning. This should be the case with any project deployed in the oil and gas industry, especially when technical specifications require working capabilities of 15 Kpsi and 375°F. With this breakthrough, the integrated 15 Kpsi multistage frac and monobore liner hanger completion technology was a suited application for a tight gas field.
URTEC-2019-149-MS
company general use, completion, completion equipment, completion system, complex reservoir, high pressure high temperature, horizontal multistage completion operation planning, HPHT, hydraulic fracturing, liner hanger completion system, lower completion, multistage fracturing, operation, operator, packer, requirement, Saudi Arabia government, Saudi Aramco, Simulation, successful deployment, Upstream Oil & Gas
Country:
- North America > United States (0.28)
- Asia > Middle East > Saudi Arabia (0.21)
SPE Disciplines:
Case History: A Decade of Experience Using Intelligent Completions for Production Optimization and Water Shut-Off in Multilateral Wells in the World's Largest Oilfield
Dulaijan, Auda (Saudi Aramco) | Shenqiti, Mohammad (Saudi Aramco) | Ufondu, Kenechukwu (Saudi Aramco) | Zahrani, Bader (Saudi Aramco) | Abouelnaaj, Khaled (Saudi Aramco) | Shafiq, Muhammad (Schlumberger)
Abstract Following the success of the first installed intelligent completion system in Saudi Arabia in 2004, over 260 Intelligent Completion systems have been installed in a majority of Maximum Reservoir Contact (MRC) Multilateral (ML) wells. These intelligent completion systems have been successfully installed in openhole, expandable liners, expandable sand screen, Extended Reach Drilling (ERD) wells and also integrated with Electric Submersible Pumps (ESP). This technology has led enhanced oil recovery while reducing water production to surface. Water handling cost at surface is reduced by producing less water to surface and also shutting off downhole water production completely. This paper covers some of the case histories of over ten (10) years of design, planning, installation, testing and optimization of intelligent completion systems in Multilateral (ML) Maximum Reservoir Contact (MRC) wells within Saudi Arabia. Production optimization practices and enhancement of production life in carbonate multilateral wells in the world's largest oilfield are also documented. Case histories highlighting how water production was remotely choked back, shut-off and production optimized from identified lateral without any intervention in the well are reviewed. Advantages of intelligent completion technology for multilateral wells and the review of the downhole choke customization process that included design flow area after modelling well data for different flow rates and differential pressures are detailed. This is in addition to the integration of the surface control system to the production supervisory control and data acquisition (SCADA) system which provided real-time downhole pressure and temperature data and remote control of downhole flow control valves during the life cycle of the well. This paper also discusses a closed-loop approach which led to efficient real time production optimization. Performance review of how intelligent completion systems provide selective lateral control, delay water breakthrough, control water production, shut off wet lateral, reduce opex, optimize production, enhance recovery and reduce safety risks thereby minimizing future interventions are documented.
Case History, completion, Completion Monitoring Systems/Intelligent Wells, Directional Drilling, drilling operation, installation, intelligent completion, intelligent completion system, intervention, lateral, Maximum Reservoir Contact, multilateral well, openhole intelligent completion, Optimize Production, production optimization, Saudi Arabia government, Saudi Aramco, Upstream Oil & Gas, valve, water cut, water production
Oilfield Places:
- Asia > Middle East > Saudi Arabia > Eastern Province > Al-Ahsa Governorate > Arabian Basin > Widyan Basin > Ghawar Field > Lower Fadhili Formation (0.99)
- Asia > Middle East > Saudi Arabia > Eastern Province > Al-Ahsa Governorate > Arabian Basin > Widyan Basin > Ghawar Field > Khuff D Formation (0.99)
- Asia > Middle East > Saudi Arabia > Eastern Province > Al-Ahsa Governorate > Arabian Basin > Widyan Basin > Ghawar Field > Khuff C Formation (0.99)
- (4 more...)
SPE Disciplines:
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