2 Million-lbm Slip-Based Landing String System Pushes the Limit of Deepwater Casing Running

Brock, James N.; Chandler, R. Brett; Jellison, Michael J.; Sanclemente, Leianne; Robichaux, Richard J.; Saleh, Muhammad

doi:10.4043/18496-ms

Cited by 5 publications

(7 citation statements)

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“…A two-million pound, slip-based landing string system has been developed to respond to these requirements. 5 The system incorporates three components: pipe, elevators, and slips.…”

Section: Ultra-high Capacity Landing String Systemmentioning

confidence: 99%

“…A two-million pound, slip-based landing string system has been developed to respond to these requirements. 5 The system incorporates three components: pipe, elevators, and slips.The 6-5/8 in., heavy wall, 150-ksi yield strength pipe incorporates an innovative thick walled section in the slip contact area for resistance to slip crushing loads and a uniquely designed dual diameter tool joint to increase elevator capacity, see Figure 2. Slips were specially engineered to equalize radial and axial loads, increase the pipe contact area, and optimize the contact angle to minimize the crushing loads on the pipe body.…”

mentioning

confidence: 99%

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Challenging Drilling Applications Demand New Technologies

Jellison

Chandler

Prideco³

et al. 2007

All Days

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractThis paper provides an update on recent developments and highlights some problem areas associated with the latest generation of extreme drilling applications. Deepwater, extended-reach (ER) and ultra-deep (UD) wells dictate large spread rates that can benefit from reduced tripping times. In response to this need, a third generation, ultra-high torque rotary shoulder connection has been developed incorporating a double-start thread that reduces assembly time by 50%. Any discussion of drill stem requirements for world-class UD and ER would be incomplete without consideration of advanced material technologies (carbon fiber based composites, Titanium and Aluminum) and their potential for enabling deeper and longer objectives. The strengths and weaknesses of each material relating to its use for drillpipe for critical applications are presented in this paper. Proper hardband selection, application and maintenance are essential to successfully and safely drill world-class UD, ER and deepwater projects. Essential features of hardband systems for critical applications are highlighted.With water depths increasing to over 10,000 ft, offshore well depths exceeding 34,000 ft, and extended-reach targets pushing out over 35,000 ft, operators are setting larger diameter and heavier casing. These heavier casing strings require landing strings with setting capacities approaching 2-million pounds that have extended the limits of previous tubular manufacturing and handling capabilities. The paper describes the technology advancements required to develop and field implement an ultra-high capacity landing string system. The industry's advancement has led to an increasing trend of drill stem friction heating failures. The paper includes characteristic features of these failures along with case histories and prevention methods. High-speed telemetry (wired) drillpipe has been successfully deployed in critical drilling environments. The paper provides an update on this exciting technology and reviews recent case histories. Deeper Targets and Faster Drilling with New Connection TechnologyIn today's rig market, deep-water, extended reach and ultradeep wells dictate large spread rates that can benefit significantly from reduced tripping times. These same wells often have mechanical and hydraulic load requirements for which today's high torque connections may not be specifically optimized.In response to this need, the development of a third generation, ultra-high torque rotary shoulder connection is now complete. 1 One of the primary philosophies employed during the development of this new double-shoulder connection was the concept of "one size does not fit all" or "one design does not fit all." Drill pipe sizes were grouped into four different size categories. Design requirements for each group were prioritized and four different connection design configurations were developed to meet the specific and different needs of each drill pipe size.The thread form is a double-start thread that red...

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“…A two-million pound, slip-based landing string system has been developed to respond to these requirements. 5 The system incorporates three components: pipe, elevators, and slips.…”

Section: Ultra-high Capacity Landing String Systemmentioning

confidence: 99%

mentioning

confidence: 99%

Challenging Drilling Applications Demand New Technologies

Jellison

Chandler

Prideco³

et al. 2007

All Days

Self Cite

View full text Add to dashboard Cite

show abstract

“…The development of the 2 million pound landing string led to the development of the first published design criteria for landing strings. (15) Wells that are more difficult, higher capacity rigs, top drives and associated drilling equipment have now created a demand for a landing string of even higher capacity. This paper discusses the challenges of addressing this demand.…”

Section: History Of Landing String Developmentmentioning

confidence: 99%

“…This paper discusses the challenges of addressing this demand. (15) There is no published industry standard for landing string tubular assemblies. API Specification 7, Specification for Rotary Drill Stem Elements (1) , API Recommended Practice 7G, Recommended Practice for Drill Stem Design and Operating Limits (2) and ANSI/API Specification 5DP, Specification for Drill Pipe (3) cover the design and accepted industry practice for drilling applications.…”

Section: History Of Landing String Developmentmentioning

confidence: 99%

“…The development of the first 2 million pound slip-based landing string established the first published landing strings design methodology and design criteria. (15) This design criteria has been successfully used for several landing strings and is presented. As these criteria were applied to the design of the first 2.5 million pound landing string, several challenges had to be met.…”

Section: Introductionmentioning

confidence: 99%

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2,500,000 Pound Landing String Challenges: Have We Reached the Limit of Today's Technology?

Brock¹,

Chin²,

Sanclemente³

2010

Proceedings of Offshore Technology Conference

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Two million pound landing strings have been successfully manufactured and deployed. However, operators are setting larger diameter and heavier casing to ever-increasing depths requiring landing strings with increased setting capacity. Drilling rigs, top drives and associated equipment with capacity of 1,250 tons are in use. Landing strings with 2,500,000 pound capacity will be required by the drilling industry. This paper describes the design challenges of developing and manufacturing a 2.5 million pound landing string.To meet the design objectives, 6-5/8 inch 150,000 psi yield strength pipe would require wall thickness of nearly 1-1/8 inches. To provide the required tensile capacity and decreased string weight, a new high-strength pipe with 165,000 psi specified minimum yield strength was developed. Slip-crushing resistance and elevator capacity requirements challenged existing manufacturing limits requiring unique designs and new high-strength materials in the slip-contact area.The 6-5/8" FH connection is a popular choice for landing strings. However, these higher load requirements have reached the limitations of the connection's ability to maintain shoulder engagement, provide a sealing mechanism, and maintain stress levels in the torque shoulder and counterbore below yield. Unique connection modifications and higher strength tool joints were required to meet performance objectives. SI to Metric Conversionfeet ('): ft. = 3.048 E -01 m foot pound (ft-lbs): = 1.35582 N-m inches ("): in. = 2.54 E 00 cm 1,000-pounds per square inch: ksi = 6.894757 E 03 kPa pounds: lb. = 4.448222 E 00 N pounds per foot: ppf = 1.4594 E 01 N/m pounds per square inch: psi = 6.894757 E 00 kPa degrees Fahrenheit(F): = 1.4 degrees Centigrade (C) +32 ft-lbs = foot pounds

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Finite Element Modeling of Slip Insert Geometric Grip Optimization for Oil Well Drill Pipes

Tang

Guo

Zhu

2020

Mathematical Problems in Engineering

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Drilling is being used to access ever-deeper oil and gas reservoirs, thereby presenting various challenges to the design and operation of down-hole tools. Slip inserts are suspension devices that are used to lower the drill pipe into the borehole and lift it to the wellhead, and their performance determines the extended depth of the borehole. In this paper, based on the field and laboratory test of the slip system, parameter sensitivity analysis is applied to the performance of a slip insert to guide the design of the latter. First, a mechanical model is developed of the drill pipe with the slip insert acting on it, and the stress acting on the drill pipe is analyzed theoretically by regarding the drill pipe as a thick-walled cylinder. Next, a numerical model is established to investigate how the slip-insert structure influences the drill-pipe stress, wherein the drill-pipe diameter is 5″ and the axial load is 180 tons. Finally, the results of a series of numerical simulations are presented. For the present slip insert and drill pipe, the optimum slip-insert parameter values are a front-rake angle of 70°, a back-rake angle of 30°, a tooth height of 2 mm, and zero chamfer.

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2 Million-lbm Slip-Based Landing String System Pushes the Limit of Deepwater Casing Running

Cited by 5 publications

References 1 publication

Challenging Drilling Applications Demand New Technologies

Challenging Drilling Applications Demand New Technologies

2,500,000 Pound Landing String Challenges: Have We Reached the Limit of Today's Technology?

Finite Element Modeling of Slip Insert Geometric Grip Optimization for Oil Well Drill Pipes

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