A New Sour Service 125 ksi SMYS Drillpipe with Sour Service 120 ksi SMYS Tool Joints for Use in Sour Gas Drilling or Non-Sour Offshore Intervention Riser Applications Requiring Higher Load Capacities

Hehn, Lucien; Uttecht, Amie; Jellison, Michael J.; Sanclemente, Leianne; Delahoussaye, Mike

doi:10.2118/178858-ms

Day 1 Tue, March 01, 2016 2016

DOI: 10.2118/178858-ms

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A New Sour Service 125 ksi SMYS Drillpipe with Sour Service 120 ksi SMYS Tool Joints for Use in Sour Gas Drilling or Non-Sour Offshore Intervention Riser Applications Requiring Higher Load Capacities

Lucien Hehn

Amie Uttecht

Michael J. Jellison

et al.

Abstract: The term ЉsourЉ is used to refer to drilling environments containing hydrogen sulfide (H 2 S). In sour wells, H 2 S causes sulfide stress cracking (SSC) in carbon low-alloy steels under tensile stress. A form of hydrogen embrittlement, SSC causes sudden, brittle fracture in drillpipe. To combat the effects of H 2 S exposure, sour service drillpipe has been manufactured to meet IRP Volume 1 -Critical Sour Drilling specifications. IRP requires 75 ksi (SS75), 95 ksi (SS95), or 105 ksi (SS105) tubes with all three… Show more

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An Innovative Pipe Grade to Enhance Reach of Deeper Prospects in Sour Fields

Plessis

Uttecht

Pink

et al. 2016

Day 2 Tue, August 23, 2016

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Moving into the next decade, wells in the Middle East are becoming more challenging as the deeper and more complex plays are exploited. This environment will be challenging from a torsional and tensile loading standpoint, and will be dynamically very active. This type of environment combined with high levels of H2S calls for a new high grade of sour service pipe. The Middle East is also opening up to the idea of high speed telemetry and wired pipe economics that call for a long lasting pipe product. When using sour service pipe that is traditionally limited to 105 KSI grades, even with an optimized string design, drillers sometimes have no other option than to sacrifice the margin of overpull, risking losing the well if fishing is unsuccessful. Alternatively, they can elect to use drill pipe, which is not suited for use in this corrosive environment, generally using API S135, with a risk of parting the string due to H2S embrittlement. To address these operational limitations, the pipe body, which is the drill pipe limiting member in tension, has to come with higher material strength and at the same time exhibit improved Sulfide Stress Cracking (SSC) resistance compared to API S135 grade. A novel grade of drill pipe was developed over a period of two years that is the strongest sour service drill pipe the industry has to offer to date and gives drillers an extra 19% of tensile capacity with its 125 KSI material yield strength. This new grade has been ordered for use in various regions of the world and for numerous applications. At this time, it is being used for intervention and stimulation operations in the Gulf of Mexico (GOM), and drilling long, extended reach (ER) wells with wired telemetry drill pipe in the Middle East. This paper presents the phases of the grade development and discusses testing requirements for the crossover between strength and SSC resistance. It also includes statistical data on the first full scale manufacturing tests. Finally, it outlines the products expectations for field applications.

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An Innovative Pipe Grade to Enhance Reach of Deeper Prospects in Sour Fields

Plessis

Uttecht

Pink

et al. 2016

Day 2 Tue, August 23, 2016

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A Novel Approach to Drill Stem Selection for Drilling in Sour Fields

Plessis

Muradov

Bordet

et al. 2021

Day 5 Fri, March 12, 2021

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For years the drilling industry has used sour service drill pipe within a narrow set of specifications and industry guidelines. That left room for original equipment manufacturers (OEM) to have customization on an iterative basis, which resulted in a wide product offering to fulfill operator needs. While this method worked, it did not lead to building the product in the most efficient and economical manner. As a result of this product diversity, drilling engineers could specify the best product to deliver their projects when running drilling models, only to have to redesign it around what is effectively available on rigs or for rental. This disconnect puts pressure on the industry players and is the result of a lack of standardization. We wiped the board to provide a simple solution that is more suited to allow alignment between operators, contractors, and rental companies. The new philosophy is based on the National Association of Corrosion Engineers (NACE) MR0175-2015 severity diagram, where environmental severity is defined in regions (1, 2, and 3), which have been used by oil companies’ engineers for their oil country tubular goods (OCTG) product selection. Even though the drill string will not be exposed to the well fluid for the same extended time and is surrounded by a more forgiving medium, the drilling fluid, the diagram allows a segmentation of customer's needs. This framework helped define targeted product properties. A research and development (R&D) and industrialization test campaign could then be started to confirm that sound product configurations could be offered with targeted properties. The study also explored the limitations imposed on connection make-up torque in a sour gas environment relative to the NACE severity diagram. Emphasis was given on methods to increase the make-up torque, which is needed to deliver the most extended reach wells that are now commonplace. The result of this two-year development campaign is a short list of grades with an optimized balance between pipe subcomponents strength and sulfide stress cracking (SSC) resistance. Region 1 (mild severity) products will offer as much tension and torque as possible, matching or exceeding these of API products, including excellent resistance to SSC, thus making drilling operation safer. Region 2 (medium severity) will offer products with medium to high strength and enhanced SSC resistance. Finally, region 3 (high severity) products will be aligned with the industry specifications for maximized SSC resistance and lower strength. This paper discusses a proactive approach that contrasts with a historical, more reactive one. As the drill stem technology leader, we saw an opportunity to drive this initiative that will benefit the drilling industry by offering a more natural way to select drill stem products. For the first time a sour service product range aligns with the needs of drilling engineers and the inventory of their selected service companies.

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Optimizing Rotary Shoulder Connection for Drilling Program

Bhukya¹,

Plessis²,

Hussain³

2019

Day 3 Thu, October 31, 2019

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The drill string may be considered a minute component of the complex drilling program; however, it is more essential to the program than often thought. It has also become more challenging to select the right rotary shoulder connection when many are available to the drilling engineer. There is a wide choice of technologies available that have different functionalities and limitations. One may also be hard-pressed with selecting the right drill pipe as choices can be quite confusing even to specialists, yet the drilling engineer must select the correct drill string and drill pipe connection. If not properly optimized, he/she may either over-engineer or under-engineer the drill string design for the said program and have to deal with the consequences. Often enough, original equipment manufacturers (OEM) are involved in application work, helping drilling engineers find a workable solution for a project they are working on. Finding an optimized selection of components to be assembled in as string that will be used to drill and complete a field development is essential. It requires choosing tools that will be able to resist the torsional, tensile, pressure loads, optimizing hydraulics as well as resisting fatigue and exposure to corrosive fluids. A number of technologies are available that will help to deliver challenging prospects or help maintain the cost of operation as minimum as possible. This paper lists field-proven solutions that are trending in the industry, with the hope that adopting the appropriate ones will deliver results by improving drilling and completion efficiency.

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A New Sour Service 125 ksi SMYS Drillpipe with Sour Service 120 ksi SMYS Tool Joints for Use in Sour Gas Drilling or Non-Sour Offshore Intervention Riser Applications Requiring Higher Load Capacities

Cited by 4 publications

References 3 publications

An Innovative Pipe Grade to Enhance Reach of Deeper Prospects in Sour Fields

An Innovative Pipe Grade to Enhance Reach of Deeper Prospects in Sour Fields

A Novel Approach to Drill Stem Selection for Drilling in Sour Fields

Optimizing Rotary Shoulder Connection for Drilling Program

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