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Collaborating Authors
First Ever Well Intervention of Multispinner Production Logging Tool Conveyed via Coiled Tubing in an Innovative Pseudo-Lateral Completion in Saudi Arabia Oil Field – A Story of Success
Al-Shammari, Fowzi (Saudi Aramco) | Al-Thiyabi, Adel (Saudi Aramco) | Rifat, Said (Saudi Aramco) | Rafee, Majed (Saudi Aramco) | Ahmed, Danish (Schlumberger) | Al Hamwi, Kaisar (Schlumberger) | Arifin, Muhamad (Schlumberger)
Abstract Throughout the history of the oil and gas industry, numerous developments have been made, especially in the drilling sector. In Saudi Arabia, wells that historically have been drilled and completed vertically and deviated have been completely shifted to horizontal and even past that to extended reach and multilateral wells. Horizontal wells have enhanced the possibility of draining relatively thin formation layers, maximizing reservoir contact, decreased water and gas coning, increased exposure to natural fracture systems in the formation and better sweep efficiencies. On other side, drilling a horizontal well and further drilling a lateral adds the complexity with respect to lateral accessibility, especially during the workover and well intervention services. Considering the challenges associated with drilling multilateral wells, completion and well intervention, an innovative completion was installed for the first time ever in an oil well in Saudi Arabia. The innovative completion technique introduced the idea of a pseudo-multilateral where the other laterals are not actually drilled but the completion consists of needles that extend into the formation enabling the well to have more reservoir contact. The innovative pseudo-lateral completion was installed during a workover operation in an oil well in Saudi Arabia for the first time, whereas, the well was completed as an open hole in a tight formation with an electrical submersible pump (ESP) initially. Prior to installation of the innovative pseudo-multilateral completion, the well was facing issues to sustain production and though the well was stimulated using coiled tubing (CT), the intervention did not meet the objectives. Therefore, after the installation of an innovative pseudo-multilateral completion, followed by a stimulation intervention, the well was able to produce at a stabilized production rate. To evaluate completion effectiveness of this pseudo-multilateral technology, the multispinner production logging via CT was conducted to determine which pseudo-laterals were contributing to the inflow. Since this is the first production log in this type of completion, the logging bottom-hole assembly and procedures were modified to overcome the challenges, such as completion internal geometry and profile. The production logging was executed successfully and the multispinner production logging analysis shows a homogenous production profile. The logging result provided the input in optimizing the pseudo-multilateral completion and increasing the confidence to pursue this technology in other applications. This paper will present the process in designing, executing and evaluating the first production logging in the pseudo-multilateral completion. It will examine benefits and challenges of running production logging in such a completion. In addition, it will display advantages and disadvantages of installing a pseudo-multilateral completion as evident from well testing through the production logging.
- Asia > Middle East > Saudi Arabia > Eastern Province > Al-Ahsa Governorate > Arabian Basin > Widyan Basin > Khurais Field (0.99)
- North America > United States > Texas > Permian Basin > Midland Basin > Kingdom Field > Abo Reef Formation (0.97)
- North America > United States > Texas > Permian Basin > Midland Basin > Kingdom Field > Abo Formation (0.97)
Abstract Production logging at multiple rates is used to correlate passive inflow device (ICD) completion designs to actual downhole flow rates for performance validation and design improvement. Accurate steady-state multi-rate production logging is quantitative proof of design for completion evaluation. When low rates are recorded first in wells that have not been fully unloaded, and then are followed up with high rate passes, the PI per compartment values may change due to unloading. When this occurs, the simulations will not match both rate curves because the production profile has changed in the time it took to log the two rates. Unloading at high rates may result in rapid wellbore cleanup, and the production-profile changes that are due to the cleanup rates will be evident. When this occurs, the utility of the lower rate PLT dataset is greatly diminished. This paper discusses the importance of performing production logging tests for the evaluation of flow contribution in ICD completions. Sandstone and carbonate case studies are presented that will illustrate the benefits of using a properly sequenced logging strategy for ICD completion performance evaluation. Multi-rate and high-to-low rate-production testing is highlighted, since it has resulted in improved well clean up and productivity. Multi-rate production logging also helped to differentiate between non-productive and the damaged zone sections along the horizontal. This comparison verifies the value gained for operators when an appropriate production-logging test design is put into practice.
- Asia > Middle East > Saudi Arabia (0.69)
- North America > United States (0.46)
This course introduces engineers and geoscientists to fiber-optic sensing technology that is used for well and reservoir diagnostics and surveillance. It provides in-depth technology awareness, including underlying theories of operation and breadth of well and reservoir applications, what it takes to deploy these sensing systems in a well, and the basic tools to determine whether fiber-optic sensing has the potential to address key well and reservoir uncertainties.
Last year, events accelerated several trends in the energy landscape. Oil and gas prices have remained low, and the industry is focusing more strongly on reducing costs and increasing operational efficiency. Reducing costs is not only about cutting costs today but also about reducing the life-cycle cost per barrel. Implementing innovative technologies that increase recovery requires a small investment but can bring large rewards. Advances in sensor accuracy, computing power, and data analytics unlock innovative use cases for technology for mapping subsurface movements of fluids.
- North America > Canada > Alberta (0.17)
- Asia > Middle East > Saudi Arabia (0.17)
- Energy > Oil & Gas > Upstream (1.00)
- Government > Regional Government > Asia Government > Middle East Government (0.37)