The Experts below are selected from a list of 21 Experts worldwide ranked by ideXlab platform
Mæland Thomas - One of the best experts on this subject based on the ideXlab platform.
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Evaluation of Foam Cementing the Reservoir Liner in Deviated Wells on the Ekofisk M Platform
University of Stavanger Norway, 2009Co-Authors: Mæland ThomasAbstract:Master's thesis in Petroleum engineeringFoam cementing the reservoir Liner has proven to be a good solution for achieving zonal isolation due to its low permeability and high compressive strength. However, out of the 32 reservoir Liners cemented on the Ekofisk M platform only 16 were defined as 100 % successful. In this thesis foam cement and Liner String components are introduced before evaluating the outcome of the different jobs. A success criterion for the outcome is established, incorporating Liner centralization, zonal isolation and Liner movement. The criterion regards the outcome a success if Liner manipulation is maintained throughout the job and no remedial job is needed, a semi-success if manipulation is maintained for most of the job and no remedial job is needed, and a failure if none of the previously mentioned. Data from all the reservoir Liner cementing operations are gathered and the outcome of each is evaluated based on the above criterion. 16 of the Liners were cemented successfully, 6 were semi-successfully, and the last 10 were failures. Failing to reestablish rotation after setting the Liner hanger is the most common reason for failure, 7 out of 10 failures can be related to this. Wellbore inclination and Liner length are both parameters which seems to contribute to the outcome of foam cementing the reservoir Liner. 13 of the 32 wells have an inclination above 80 º at the Liner shoe. Out of these 13 wells only 4 are regarded as successful, the rest are either semi-successful, 4, or failures, 5. Even though failures are observed for all inclinations, this happens more frequently at higher inclination. The success rate also seems to be influenced be the length of the Liner. For shorter Liners, i.e. with a length below 2000 ft, nearly 78 % of the cement jobs were successful, whereas the same percentage for Liners with a length between 5000 ft and 6000 ft is 25 %. In fact, a near linear trend is observed for the success rate as the length increases
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Evaluation of Foam Cementing the Reservoir Liner in Deviated Wells on the Ekofisk M Platform
University of Stavanger Norway, 2009Co-Authors: Mæland ThomasAbstract:Foam cementing the reservoir Liner has proven to be a good solution for achieving zonal isolation due to its low permeability and high compressive strength. However, out of the 32 reservoir Liners cemented on the Ekofisk M platform only 16 were defined as 100 % successful. In this thesis foam cement and Liner String components are introduced before evaluating the outcome of the different jobs. A success criterion for the outcome is established, incorporating Liner centralization, zonal isolation and Liner movement. The criterion regards the outcome a success if Liner manipulation is maintained throughout the job and no remedial job is needed, a semi-success if manipulation is maintained for most of the job and no remedial job is needed, and a failure if none of the previously mentioned. Data from all the reservoir Liner cementing operations are gathered and the outcome of each is evaluated based on the above criterion. 16 of the Liners were cemented successfully, 6 were semi-successfully, and the last 10 were failures. Failing to reestablish rotation after setting the Liner hanger is the most common reason for failure, 7 out of 10 failures can be related to this. Wellbore inclination and Liner length are both parameters which seems to contribute to the outcome of foam cementing the reservoir Liner. 13 of the 32 wells have an inclination above 80 º at the Liner shoe. Out of these 13 wells only 4 are regarded as successful, the rest are either semi-successful, 4, or failures, 5. Even though failures are observed for all inclinations, this happens more frequently at higher inclination. The success rate also seems to be influenced be the length of the Liner. For shorter Liners, i.e. with a length below 2000 ft, nearly 78 % of the cement jobs were successful, whereas the same percentage for Liners with a length between 5000 ft and 6000 ft is 25 %. In fact, a near linear trend is observed for the success rate as the length increases
Scott Sherman - One of the best experts on this subject based on the ideXlab platform.
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using burst collars in a Liner String for multi zone completions in horizontal wellbores case study
SPE Annual Technical Conference and Exhibition, 2010Co-Authors: Jason Schoenfeld, Natasha Helen Kostenuk, Max Jorgensen, Scott ShermanAbstract:This paper introduces a new multi-zone completion technology (MZCT) to stimulate multiple stages in a horizontal wellbore that is either cased using external packers or cemented into place. In both scenarios, a Liner assembly containing specialized collars with predrilled ports that are covered by burst disks is run into the horizontal section of a wellbore. There are no restrictions on the number of collars that can be run, nor the spacing between them. After the assembly is set, coiled tubing is used to complete each interval using a cup/cup assembly that straddles each specialized collar, and then pressures up to open the burst ports. The fracture is then initiated through the coil String into the reservoir, with the coiled tubing moving along the horizontal wellbore from the toe to the heel, the process being repeating against each specialized collar. Advantages of this new system include no limits to the number of stages that can be completed, full bore diameter available following the stimulations without the cost of milling out mechanical ports, and the ability to do re-completions on the same intervals at a later date. The Liner with the burst collars can be used with packers or cemented in, additional collars can be run and stimulated at a later date, and the completion is more cost effective than current alternatives. This paper discusses the application of the cemented burst collars on the Viking formation in the Redwater field of Alberta and Plato field of SW Saskatchewan. Comparisons are made between the burst collar system and previous completion systems used in the Viking. Recognized benefits include reduced downtime during operations after a screen-out and tighter spacing between fracs in a cemented Liner application as opposed to perforating.
Jason Schoenfeld - One of the best experts on this subject based on the ideXlab platform.
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using burst collars in a Liner String for multi zone completions in horizontal wellbores case study
SPE Annual Technical Conference and Exhibition, 2010Co-Authors: Jason Schoenfeld, Natasha Helen Kostenuk, Max Jorgensen, Scott ShermanAbstract:This paper introduces a new multi-zone completion technology (MZCT) to stimulate multiple stages in a horizontal wellbore that is either cased using external packers or cemented into place. In both scenarios, a Liner assembly containing specialized collars with predrilled ports that are covered by burst disks is run into the horizontal section of a wellbore. There are no restrictions on the number of collars that can be run, nor the spacing between them. After the assembly is set, coiled tubing is used to complete each interval using a cup/cup assembly that straddles each specialized collar, and then pressures up to open the burst ports. The fracture is then initiated through the coil String into the reservoir, with the coiled tubing moving along the horizontal wellbore from the toe to the heel, the process being repeating against each specialized collar. Advantages of this new system include no limits to the number of stages that can be completed, full bore diameter available following the stimulations without the cost of milling out mechanical ports, and the ability to do re-completions on the same intervals at a later date. The Liner with the burst collars can be used with packers or cemented in, additional collars can be run and stimulated at a later date, and the completion is more cost effective than current alternatives. This paper discusses the application of the cemented burst collars on the Viking formation in the Redwater field of Alberta and Plato field of SW Saskatchewan. Comparisons are made between the burst collar system and previous completion systems used in the Viking. Recognized benefits include reduced downtime during operations after a screen-out and tighter spacing between fracs in a cemented Liner application as opposed to perforating.
Natasha Helen Kostenuk - One of the best experts on this subject based on the ideXlab platform.
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using burst collars in a Liner String for multi zone completions in horizontal wellbores case study
SPE Annual Technical Conference and Exhibition, 2010Co-Authors: Jason Schoenfeld, Natasha Helen Kostenuk, Max Jorgensen, Scott ShermanAbstract:This paper introduces a new multi-zone completion technology (MZCT) to stimulate multiple stages in a horizontal wellbore that is either cased using external packers or cemented into place. In both scenarios, a Liner assembly containing specialized collars with predrilled ports that are covered by burst disks is run into the horizontal section of a wellbore. There are no restrictions on the number of collars that can be run, nor the spacing between them. After the assembly is set, coiled tubing is used to complete each interval using a cup/cup assembly that straddles each specialized collar, and then pressures up to open the burst ports. The fracture is then initiated through the coil String into the reservoir, with the coiled tubing moving along the horizontal wellbore from the toe to the heel, the process being repeating against each specialized collar. Advantages of this new system include no limits to the number of stages that can be completed, full bore diameter available following the stimulations without the cost of milling out mechanical ports, and the ability to do re-completions on the same intervals at a later date. The Liner with the burst collars can be used with packers or cemented in, additional collars can be run and stimulated at a later date, and the completion is more cost effective than current alternatives. This paper discusses the application of the cemented burst collars on the Viking formation in the Redwater field of Alberta and Plato field of SW Saskatchewan. Comparisons are made between the burst collar system and previous completion systems used in the Viking. Recognized benefits include reduced downtime during operations after a screen-out and tighter spacing between fracs in a cemented Liner application as opposed to perforating.
Max Jorgensen - One of the best experts on this subject based on the ideXlab platform.
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using burst collars in a Liner String for multi zone completions in horizontal wellbores case study
SPE Annual Technical Conference and Exhibition, 2010Co-Authors: Jason Schoenfeld, Natasha Helen Kostenuk, Max Jorgensen, Scott ShermanAbstract:This paper introduces a new multi-zone completion technology (MZCT) to stimulate multiple stages in a horizontal wellbore that is either cased using external packers or cemented into place. In both scenarios, a Liner assembly containing specialized collars with predrilled ports that are covered by burst disks is run into the horizontal section of a wellbore. There are no restrictions on the number of collars that can be run, nor the spacing between them. After the assembly is set, coiled tubing is used to complete each interval using a cup/cup assembly that straddles each specialized collar, and then pressures up to open the burst ports. The fracture is then initiated through the coil String into the reservoir, with the coiled tubing moving along the horizontal wellbore from the toe to the heel, the process being repeating against each specialized collar. Advantages of this new system include no limits to the number of stages that can be completed, full bore diameter available following the stimulations without the cost of milling out mechanical ports, and the ability to do re-completions on the same intervals at a later date. The Liner with the burst collars can be used with packers or cemented in, additional collars can be run and stimulated at a later date, and the completion is more cost effective than current alternatives. This paper discusses the application of the cemented burst collars on the Viking formation in the Redwater field of Alberta and Plato field of SW Saskatchewan. Comparisons are made between the burst collar system and previous completion systems used in the Viking. Recognized benefits include reduced downtime during operations after a screen-out and tighter spacing between fracs in a cemented Liner application as opposed to perforating.