The First Application of Premium Port Technology to Conduct Zonal Stimulation and the Ability to Control the Well Injectivity Profile on a Unique Offshore Field in the Arctic

Koloda, A. V.; Morozov, O. N.; Panarin, A. T.; Mukhametshin, Ilkam; Bulygin, Igor; Shestov, Sergey; Ksenofontova, A. A.

doi:10.2118/176511-ms

All Days 2015

DOI: 10.2118/176511-ms

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The First Application of Premium Port Technology to Conduct Zonal Stimulation and the Ability to Control the Well Injectivity Profile on a Unique Offshore Field in the Arctic

A. V. Koloda

O. N. Morozov

A. T. Panarin

et al.

Abstract: The reservoir of Prirazlomnoye field is composed of carbonate rocks. Premium port completion technology—a valve with an inflow/injection control device—was piloted in the Arctic offshore environment, allowing selective stimulation of the bottomhole pay zone and high-rate injection via both the ports and an inflow control device (ICD). This technology mitigated the risks of premature water breakthrough in the production well and improved the waterflood performance. The project began with the analysis to justify… Show more

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Cited by 18 publications

References 9 publications

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Exploring through Fracturing in Eastern Siberia: Defining Gas Production Potential from Low-Temperature Sandstone of Chayandinskoe Field

et al. 2016

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With reserves of over 1 trillion cubic meters, Chayandinskoe oil, gas, and condensate field (OGCF) is one of the strategic fields in eastern Siberia. The field is currently in the exploration stage. Geological properties of the formations vary significantly, and it is necessary to define appropriate methods of well construction and completion prior to switching to a field development stage. One of the prospective options is to implement hydraulic fracturing in low-permeability areas of the Chayandinskoe. A pilot stimulation campaign was executed in 2015–2016 to test the efficiency of hydraulic fracturing in vertical wells and in one subhorizontal multilayer well. The geology of eastern Siberia formations is unique. In particular, producing formations of Chayandinskoe field have extremely low temperatures (8 to 13°C) that require a principally different approach to fracturing fluid design compared to the majority of the operations in western Siberia. One challenge is to achieve a fluid that is stable but that can break within a few hours after the treatment. Laboratory research was a significant part of the project preparatory stage; enzyme breakers, in particular, were included to the recipe. Methane hydrate creation is another common challenge in these reservoirs; special inhibitors under high concentrations were integrated within the fluid formulation. Within two winter campaigns (a total of five fracturing stages), there were three wells stimulated. The Khamakinskiy producing formation was tested in all three wells, and the Botuobinskiy and Talakhskiy formations were tested in a subhorizontal well in 2016. Advanced logging suites were run in both the pilot and lateral holes of the wells to optimize fracture modeling and placement. This paper contains detailed description of the core and laboratory testing performed in the laboratory for fluid optimization. The specifics of completion of a subhorizontal well with a multistage stimulation assembly is described. In this well, premium ports were used to allow for selective interval isolation. Well cleanout and nitrogen kickoff via coiled tubing were done to minimize near-wellbore damage and prevent hydrate creation during fracturing fluid flowback. The flow profile was measured using a special multiphase imager run with fiber-optic-enabled coiled tubing. Results have shown that fracturing as a method of field development is effective, but requires a complex preparatory stage in the laboratory and further optimization to local logistics and geological conditions. The project is one of the first gas fracturing campaigns in eastern Siberia. The methods developed and the lessons learned in this project are of paramount value for future stimulation campaigns for field development in the region.

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Exploring through Fracturing in Eastern Siberia: Defining Gas Production Potential from Low-Temperature Sandstone of Chayandinskoe Field

et al. 2016

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Coiled Tubing Complex Implementation at Stimulation and Testing Project of Deviated Exploration Gas Well at Chayandinskoe Oilfield, Yakutia, Russia

et al. 2016

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Recently drilled exploration well at Chayandinskoye Gas Condensate Field in East Siberia, where at the moment exploration drilling is at the final stage, was selected as a candidate to evaluate effectiveness of hydraulic fracturing stimulation to boost the production. During the production logging and the well test on the pilot vertical section, three prolific zones were identified for further development. As a result of several discussions with the Client and based on the preliminary data analysis, the decision was made to proceed with hydraulic fracturing treatment. Due to the remoteness of the field, unique and complicated geology and reservoir properties, it was clear that the single contactor is required who has a relevant experience and technology being capable to address the challenges and provide an integrated approach. This approach included designing fit-for-purpose well completion, multistage selective hydraulic fracturing and coiled tubing applications inclusive of capability to perform real-time downhole measurements to monitor and evaluate complex multiphase flow profile. Company's completion segment had introduced and run 168-114mm combined premium-port liner down to 2034m MDDF equipped with 3 ports able to be shifted in open/close position, and hydraulic open-hole swelling packers to isolate annular. This type of completion allows selective or combined production from all the zones. Moreover, it enables selective stimulation of each zone, as well as selective or combined production well testing. In case of water breakthrough, knowing which zone is contributing to the water production, the premium-port can be shift closed to prolong the production without the immediate need to perform costly water shutoff treatment. Historically hydraulic fracturing has been a very effective way of increasing production in low permeability reservoirs. Based on the job design, three treatments were performed with 39t, 95t and 20t accordingly. Coiled Tubing services performed debris and residual proppant wellbore cleanout, multiple shifting of premium-ports, nitrogen kick off, and real-time downhole measurements of bottomhole pressure, temperature and production logging. The remoteness of the gas condensate field and the limited timeframe created additional challenges in terms of logistics, equipment and chemicals mobilization. It was clear that the proper preparation and planning were the key to succeed. Needless to mention that the company state-of-the-art technologies, competent personnel and close collaboration between the segments and the Client were the essential part of the equation.

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An Improved Method for Shifting Sliding Sleeves on ICD Screen Completions in Extended- and Mega-Reach Applications Combining a Novel Shifting Tool with Coiled Tubing Well Tractor Technology

Mannil

Lobov

Buyanov

et al. 2017

Day 2 Wed, March 22, 2017

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Korchagina and Filanovskoe oil fields in the north Caspian Sea have many extended- and mega-reach wells that uses inflow control device (ICD) screen completions with sliding sleeves. This completion technique empowers the operator with the ability to shut off unwanted water/gas breakthrough and allows for more control of injection or inflow with unlimited number of stages or zones. This paper describes a new verified workflow to successfully intervene these wells and manipulate (open/close) these sliding sleeves using coiled tubing (CT). It has proven challenging to shift these sliding sleeves using conventional methods with CT owing to the limitation of available weight on bit (WOB) at the toe end of those extended-reach wells, even when using large-size CT strings. The new proposed workflow uses a well tractor operated in tandem with a hydraulic shifting tool to generate the required shifting force downhole. The bottomhole assembly (BHA) also includes a novel flow control sub, assembled between the shifting tool and the tractor, with the ability to control the flow to selectively activate the tractor, the shifting tool, or both, based on surface commands by manipulating pump rate. To verify the methodology, a realistic well scenario was simulated at a test site by installing two ICD screens with sliding sleeves at the end of a 1,000-ft-long horizontal flow loop. The sleeves on each ICD screen required approximately 4,000 lbf set-down force to open. The available WOB at the end of horizontal loop with 2-in. CT was only 1,000 lbf; applying more than 1,000 lbf set-down load could have detrimental effects, including CT buckling. The 3⅞-in. OD well tractor used for the job was able to generate 6,000 lbf of pulling force downhole, which was more than enough to shift the sleeves open. Both sleeves were successfully opened by tractoring down while maintaining both the tractor and the shifting tool in the on position, which was achieved by manipulating the flow control sub using pump rate cycles. Both sleeves were then successfully closed, one after the other, by pulling with the CT with the tractor turned off while maintaining the shifting tool in the on position, again achieved by manipulating the flow control sub. Live downhole pressure and force measurements were key in confirming proper functionality of the tractor and identifying different tool modes. Having real-time data is also crucial for proper depth correlation using casing collar locators (CCL) or gamma ray measurements to ensure activating the correct sleeves. This marks the first time that a workflow was verified on the use of pull force generated by a well tractor to manipulate completion accessories in extended-reach well interventions using CT. The technology, preparation, results, and prospects of implementation are discussed in this paper.

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The First Application of Premium Port Technology to Conduct Zonal Stimulation and the Ability to Control the Well Injectivity Profile on a Unique Offshore Field in the Arctic

Cited by 18 publications

References 9 publications

Exploring through Fracturing in Eastern Siberia: Defining Gas Production Potential from Low-Temperature Sandstone of Chayandinskoe Field

Exploring through Fracturing in Eastern Siberia: Defining Gas Production Potential from Low-Temperature Sandstone of Chayandinskoe Field

Coiled Tubing Complex Implementation at Stimulation and Testing Project of Deviated Exploration Gas Well at Chayandinskoe Oilfield, Yakutia, Russia

An Improved Method for Shifting Sliding Sleeves on ICD Screen Completions in Extended- and Mega-Reach Applications Combining a Novel Shifting Tool with Coiled Tubing Well Tractor Technology

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