High Performance, Slim-hole Drilling with 4 in. Drill Pipe and a Streamline 
Connection

Plessis, Guillaume; Andre, Glowacz; Pasnak, John; Jellison, Michael J.

doi:10.2523/87988-ms

Proceedings of IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition 2004

DOI: 10.2523/87988-ms

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High Performance, Slim-hole Drilling with 4 in. Drill Pipe and a Streamline Connection

Guillaume Plessis¹,

Glowacz Andre²,

John Pasnak³

et al.

Abstract: fax 01-972-952-9435. AbstractBoth Saudi Aramco and Total Indonesia found benefits in selecting 4 in. drill pipe with streamlined double shoulder connections for the drilling of wells, for which the 3 ½ in. drill pipe was unsuitable. Although dealing with different environments and applications, these benefits can be summarized in "successfully drilling longer slim holes with a drill string having enhanced torsional, tensile and hydraulic characteristics at a lower overall cost". design provides 22,000 ft-lb wo… Show more

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Double Shoulder Connection Technology Enables Exploration and Production of Ultra-Deep Prospects – Case Histories and Lessons Learned in Xinjiang, China

Zhao

Plessis

et al. 2012

IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition

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China oil and gas operators are more and more engaged in the exploration and production of much deeper oil and gas prospects that are pushing the boundaries and limits of the traditional drill stem. A high number of ultra-deep wells (above 7 000 meters) are being drilled in the Xinjiang area. In this part of China, there is a need to improve the hydraulic and mechanical performances of the drilling tubulars used in both large and slim hole size intervals. A key feature in these products’ performances is the rotary shouldered connection (RSC). API RSC typically requires larger profiled tool joints to provide acceptable torque and tension capacity. However, this increase s pressure losses and restricts fishability. Double shoulder connection (DSC) technology has been successfully used to address this mutually exclusive need for both torque and hydraulics. CNPC has greatly benefited from their decision to use a first generation double shoulder connection (1st gen DSC) on various sizes of drilling tubulars to successfully drill the deepest exploration well in the Jungar basin as well as numerous exploration and production wells in the Tarim basin. This paper will first describe the DSC technology, how it contributes to the improved drilling performance, and will present supportive case histories. The 1st gen DSC performed very successfully. Looking ahead, deeper prospects are on the horizon and further enhancements in drill pipe and DSC technology will be necessary. Prospective future options will also be discussed in this paper.

show abstract

Double Shoulder Connection Technology Enables Exploration and Production of Ultra-Deep Prospects – Case Histories and Lessons Learned in Xinjiang, China

Zhao

Plessis

et al. 2012

IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition

View full text Add to dashboard Cite

show abstract

Drill Pipe Connection Technology Enables Saudi Aramco & Precision Drilling to Deliver the Longest Horizontal Well in Saudi Arabia

Iravani

Hanafi

Al-Shehry³

et al. 2013

SPE/IADC Middle East Drilling Technology Conference &Amp; Exhibition

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Recently in Saudi Arabia, a national drilling record was reached for the longest horizontal well drilled. A key technology for drilling such wells, which typically show a Total Depth (TD) in excess of 30,000 ft, was the use of extended reach horizontal drilling. Drilling these wells required, among other things, a proper selection of drill stem products. With drill pipe accounting for most of the string length, choosing the right specification plays a huge role in overall drilling performance. With a lot of friction as the string is ran downhole, the ability to transmit torque to the bit is challenging and connection technology becomes critically important. Double shoulder connections place connections at par with the pipe body in terms of torque capacity and actually come with additional benefits. Not only do these connections transmit higher torque but they do it using a thinner steel envelop, which allows a larger internal opening for improved hydraulics. Furthermore, these streamlined connections can also come with reduced Outside Diameter (OD) tool joints which help keep the Equivalent Circulation Density (ECD) as low as necessary to maintain formation integrity. Towards the end of 2010, a national record 32,136 ft measured depth well was drilled in Saudi Arabia using such connection technology, proper material grade selection and optimized pipe size selection. The well was then used for horizontal water injection into the reservoir in order to maintain reservoir pressure and optimize production. This paper will describe the challenges of this project and how connection technology, engineered material grade and pipe size helped address each of these challenges. The record well case history will form the base of this paper and authors will include a comprehensive section on the successfully selected connection, its performances as well as a summary of more recent results.

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High Performance, Slim-hole Drilling with 4 in. Drill Pipe and a Streamline Connection

Cited by 2 publications

References 2 publications

Double Shoulder Connection Technology Enables Exploration and Production of Ultra-Deep Prospects – Case Histories and Lessons Learned in Xinjiang, China

Double Shoulder Connection Technology Enables Exploration and Production of Ultra-Deep Prospects – Case Histories and Lessons Learned in Xinjiang, China

Drill Pipe Connection Technology Enables Saudi Aramco & Precision Drilling to Deliver the Longest Horizontal Well in Saudi Arabia

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