Layer | Fill | Outline |
---|
Map layers
Theme | Visible | Selectable | Appearance | Zoom Range (now: 0) |
---|
Fill | Stroke |
---|---|
Collaborating Authors
Abstract Intelligent Inflow tracer technology can quantify zonal inflow contribution and identify the location of water breakthrough as its' primary monitoring capabilities. A novel chemical tracer system was permanently installed and successfully field tested in a horizontal oil producer in Saudi Arabia. These intelligent tracer systems allows the monitoring of the entire length of the production section, as early as the clean-up phase. They can also continuous production monitoring for up to ten years without the need for intervention. Some of the lesser known monitoring possibilities include inflow control valve actuation monitoring, packer integrity, multi-lateral and zonal inflow conformance. Understanding fluid influx profiles through permanent interventionless surveillance, has facilitated clean-up operations and improved long-term well performance, as presented in this paper. Unique oil and water soluble tracers are embedded in solid polymeric substrates and mounted on specialized carrier subs in each reservoir compartment separated by packers. When oil or water contacts the polymer substrates, the respective tracer is diffused out gradually with time. Produced fluid samples are collected at surface and analyzed for the presence of unique chemical tracers. The tracers can be measured down to parts per trillion (PPT), using advanced liquid chromatography coupled with a mass spectrometer. The presence and relative contribution of oil and/or water can then be determined for each downhole compartment in the reservoir. This inflow tracer technology was field tested in a 3000ft horizontal well, penetrating a carbonate reservoir. The openhole section was segmented into five compartments using packers which was also equipped with inflow control devices (ICD) integrated with sliding sleeves. Oil and water tracer carrier subs were placed in each of the five compartments. Initial surface sampling of first production showed water tracers from each of the five compartments, as expected with flowback of the completion brine. After clean-up the well produced 100% oil, and surface sampling indicated contribution from only the two heel compartments. The surface choke was opened to very high rate in an effort to clean-up the toe compartments. Subsequent surface sampling confirmed production from additional compartments many months after the cleanup but not from the toe. Periodic surface sampling has continued for nearly two years and will continue for the remaining tracer longevity. The tracers have been instrumental in pinpointing the location of water breakthrough and determining appropriate corrective intervention. In case of high water cut in any compartment, the offending segment(s) can be retarded by the closure of the sliding sleeve ICDs. The application of this wireless surveillance technology is a cost effective means for optimizing horizontal well performance, particularly in mature reservoirs and most appropriate for extended reach wells to overcome the limitations of PLTs and fiber optic monitoring solutions (Semikin et. Al, 2015).
- Well Drilling > Drilling Operations > Directional drilling (1.00)
- Well Completion > Completion Monitoring Systems/Intelligent Wells > Flow control equipment (1.00)
- Reservoir Description and Dynamics > Formation Evaluation & Management > Well performance, inflow performance (1.00)
- Reservoir Description and Dynamics > Formation Evaluation & Management > Tracer test analysis (1.00)
First Permanent Inflow Monitoring Experience in a Smart-Liner, Intelligent-Completion, Multi-Lateral Adnoc Offshore Well
El Maimouni, Fadwa (ADNOC Offshore) | Mirza, Omar (ADNOC Offshore) | Aissaoui, Abdelkader (ADNOC Offshore) | Almstrong, Shawn (ADNOC Offshore) | Bigno, Yann (ADNOC Offshore) | Keshtta, Osama (ADNOC Offshore) | Almazrouei, Gaya (ADNOC Offshore) | Gharbawi, Shihabeldin (ADNOC Offshore) | Rashed, Rasha (RESMAN) | Elder, Craig (RESMAN) | Leung, Edmund (RESMAN)
Abstract The scope of this paper is to share a field experience with permanent inflow tracer deployment and monitoring of an intelligent multi-lateral well, completed with Smart-Liner (Limited Entry Liner). It will describe what ADNOC Offshore has learnt through inflow tracing clean up surveillance from several restarts and steady state production through inflow modelling interpretation techniques. This passive method of permanent monitoring technology utilizes chemistry and materials expertise to design tracers that release signature responses when they come into contact with either in-situ oil or formation water. The chemical tracer technology enables wireless monitoring capabilities for up to five years. Unique chemical tracers are embedded in porous polymer matrix inside tracer carriers along select locations in the lower completion to correlate where the oil and water is flowing in a production well. Interpreting tracer signals can provide zonal rate information by inducing transients to create tracer signals that are transported by flow to surface and captured in sample bottles for analysis. The measured signals are matched with models through history matching to yield zonal rate estimates. ADNOC Offshore has installed inflow tracers in an intelligent multi-lateral well to monitor lateralsโ contributions, to verify new completion technology, and to estimate the flow profile from individual sections of Smart-Liner, run for the first time in the field. The interpretation results have been able to characterize inflow performance without any intervention in the well. Several restart and steady state surveys are planned to understand some key characteristics of the well completion and reveal how the well has changed since it was put on production. This technology will help allocate commingled production to the three laterals. The use of inflow tracers will provide multiple inflow surveys that will reduce operational risk, well site personnel, costs and will improve reservoir management practices. Permanent inflow tracing is expected to change the way production monitoring can be performed, especially in advanced wells where PLTs or Fiber Optic technology cannot access multi-laterals.
- Energy > Oil & Gas > Upstream (1.00)
- Government > Regional Government > Asia Government > Middle East Government > UAE Government (0.82)
- Reservoir Description and Dynamics > Formation Evaluation & Management > Well performance, inflow performance (1.00)
- Reservoir Description and Dynamics > Formation Evaluation & Management > Tracer test analysis (1.00)
- Production and Well Operations > Well & Reservoir Surveillance and Monitoring > Production logging (1.00)
World First Commercial Application of Permanent Interventionless Monitoring Using Intelligent Inflow Gas Tracer Technology
Abdul Aziz, Khairil Faiz (HESS) | Mustafa, Azreen (HESS) | Wong, Paul (HESS) | Wurtz, Marie (RESMAN) | Leung, Edmund (RESMAN) | Overby Landrรธ, Stรฅle (RESMAN) | Koumouris, Steve (RESMAN)
Abstract Over the past decade, commercially available inflow tracers have been increasingly used to permanently monitor lower completions without the need for intervention. They have been designed to release selectively to oil or water, typically for clean-up verification, inflow quantification and identifying the location of water breakthrough in oil reservoirs. Naturally, there has been an industry demand and requirement to develop inflow gas tracers to monitor gas reservoirs and identifying the location of gas breakthrough in oil reservoirs. In a green field development, it is important to obtain as much measurements as possible to understand completion efficiency and guide reservoir management decisions. This paper presents the first commercial installation of inflow gas tracer technology that has been deployed in a dry gas field by HESS Malaysia in open hole stand-alone screen completions. It discusses the original monitoring objectives of this application in a full field development and how they evolved due to the gas tracer capabilities and the need for early well and field information. This paper will also discuss the retrofit screen design that allowed the gas tracers embedded in a polymer matrix called gas systems (GS) to be installed inside premium mesh screens. At the wellsite, sampling campaign adjustments were executed depending on the flowing conditions during the clean-up, restarts to obtain relative flow contribution and inflow performance under multi-rate testing conditions. Using a structured approach, the inflow gas monitoring project included feasibility studies, well candidate selection, lessons learnt and developed best practices based on installations in six producing wells in the North Malay Basin (NMB).
- Asia > Malaysia > South China Sea (0.25)
- Asia > Malaysia > Kelantan > South China Sea > Gulf of Thailand (0.25)
Abstract This is the world's first field trial where inflow tracers have been permanently integrated into a cased, cemented and then perforated production liner; previous inflow tracer deployments have been into non-cemented lower completions. This field trial took place for an oil production-well in the Vigdis field located in the North Sea. The objectives for the tracer deployment for the field trial were: To demonstrate a tracer deployment method not causing complications during Run-in-hole or cementing, while allowing tracer marking of produced oil and water. To demonstrate inflow tracer monitoring specifically for cemented liners To improve the understanding of inflow and reservoir dynamics specifically for this well and the Vigdis field Inflow tracers are unique tracer chemicals suspended in a plastic material, designed to release by liquid contact. These were deployed in a metal chamber at the outside of the production liner, to protect from the cementing operations. The liner joints containing the tracers were then spaced out at strategic locations across different reservoir intervals, and the production liner was cemented in place. After perforating, the tracers were exposed to flow, allowing surface sampling and later analysis of each unique tracer. Inflow along the wellbore was then determined through the use of sophisticated tracer transport models. To ensure the success of this first field trial, the following items were specifically explored: Care was taken to build the customized metal chamber with a smaller outer diameter than the couplings used for the 7inch liner, and to fill this with low solid oil-based mud. The integrity of the tracer systems and the deployment method were proven by: ?No complications were observed during Run-in-Hole (RIH) or cementing ?All tracers were detected with strong signals in liquid samples, Tracer transport models were applied to the tracer signals and related production data, enabling: ?Identification of the location of early water inflow ?Defining which of two reservoir layers held the highest pressure ?Verifying contribution from the toe during cleanup
- Europe > Norway > North Sea > Northern North Sea > East Shetland Basin > PL 089 > Block 34/7 > Vigdis Field > Vigdis รst Formation (0.99)
- Europe > Norway > North Sea > Northern North Sea > East Shetland Basin > PL 089 > Block 34/7 > Vigdis Field > Vigdis Nordรธst Formation (0.99)
- Europe > Norway > North Sea > Northern North Sea > East Shetland Basin > PL 089 > Block 34/7 > Vigdis Field > Vigdis Brent Formation (0.99)
- (9 more...)
Abstract Inflow distribution monitoring of long horizontal wells is a challenging issue. Input from such surveillance is needed to verify the clean-up of the well; to monitor the functionality of the completion solution; identify early water breakthrough; to calibrate the reservoir model, and to optimize the drainage strategy. These steps are crucial for increased oil recovery (IOR). A dual lateral well equipped with unique chemical inflow tracers distributed across ten compartments has been installed in a marginal field development on the Norwegian Continental Shelf. The Hyme oil field development utilizes a 20 km subsea tie back to a platform where the inflow tracers are sampled. The monitoring efforts assess well performance from the clean-up, cross flow and back pressure in each lateral. Traditional wire-line conveyed production logging was not an option in the field's monitoring strategy due to lack of wire-line access to the reservoir zones. The multi-year life length of the deployed chemical inflow tracers enables monitoring of the well for a substantial period of time. Tracer samples are acquired on a regular basis depending on monitoring objectives. In addition, a large number of samples were acquired after a shut-in period to catch the flow-induced transient responses of the different tracers. Parameters such as clean-up quality, cross-flow during shut-in and back-pressure in the two branches were interpreted from tracer appearance, including peak arrival timing and overall shape of the different tracer transient responses. The tracer transient monitoring technology enabled quantification of oil contribution from each compartment in each lateral. A history matching process was used to match the observed tracer signatures after a shut-in period using a transient inflow tracer model that has been experimentally verified by flow-loop experiments. The estimated inflow profiles show good agreement with expected result, based on the reservoir properties, and what was acquired from individual testing of the two branches. The initial information gained since first oil has been valuable in understanding early production performance and updating transient wellbore and reservoir models for assessing well performance in relation to increasing field recovery without the need for interventions.
- Oceania > Australia > Western Australia > North West Shelf > Carnarvon Basin > Exmouth Basin > WA-43-L > Block WA-43-L > Pyrenees Field (0.99)
- Oceania > Australia > Western Australia > North West Shelf > Carnarvon Basin > Exmouth Basin > WA-43-L > Block WA-42-L > Pyrenees Field (0.99)
- Oceania > Australia > Western Australia > North West Shelf > Carnarvon Basin > Exmouth Basin > WA-43-L > Block WA-12-R > Pyrenees Field (0.99)
- (28 more...)
- Well Drilling > Drilling Operations > Directional drilling (1.00)
- Reservoir Description and Dynamics > Formation Evaluation & Management > Well performance, inflow performance (1.00)
- Reservoir Description and Dynamics > Formation Evaluation & Management > Tracer test analysis (1.00)
- Production and Well Operations > Well & Reservoir Surveillance and Monitoring (1.00)