Innovative Drilling Technology Reduced Drilling Time in Deep Drilling Jurassic 16in Hole Section- Case Study

Bottom Hole Assembly Design Enhancement Successfully Eliminate Hole Problems and Reduce Significant Drilling Time : South S Field Case Study

Proc. Indon. Petrol. Assoc., Digital Technical Conference, 2020 ◽

10.29118/ipa20-e-71 ◽

2020 ◽

Author(s):

Y. D. Mulia

Keyword(s):

Contact Area ◽

Cost Savings ◽

Assembly Design ◽

Drilling Performance ◽

Bottom Hole ◽

Unconsolidated Sand ◽

Bottom Hole Assembly ◽

Drilling Parameter ◽

Drilling Time

For S-15 and S-14 wells at South S Field, drilling of the 12-1/4” hole section became the longest tangent hole section interval of both wells. There were several challenges identified where hole problems can occur. The hole problems often occur in the unconsolidated sand layers and porous limestone formation sections of the hole during tripping in/out operations. Most of the hole problems are closely related to the design of the Bottom Hole Assembly (BHA). In many instances, hole problems resulted in significant additional drilling time. As an effort to resolve this issue, a new BHA setup was then designed to enhance the BHA drilling performance and eventually eliminate hole problems while drilling. The basic idea of the enhanced BHA is to provide more annulus clearance and limber BHA. The purpose is to reduce the Equivalent Circulating Density (ECD,) less contact area with formation, and reduce packoff risk while drilling through an unconsolidated section of the rocks. Engineering simulations were conducted to ensure that the enhanced BHA were able to deliver a good drilling performance. As a results, improved drilling performance can be seen on S-14 well which applied the enhanced BHA design. The enhanced BHA was able to drill the 12-1/4” tangent hole section to total depth (TD) with certain drilling parameter. Hole problems were no longer an issue during tripping out/in operation. This improvement led to significant rig time and cost savings of intermediate hole section drilling compared to S-15 well. The new enhanced BHA design has become one of the company’s benchmarks for drilling directional wells in South S Field.

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Rank Wildcat Drilling Risks & Drilling Time Reduced in Ultra Deepwater Offshore Namibia with the Application of Seismic & Formation Pressure While Drilling Technology

10.2118/163496-ms ◽

2013 ◽

Cited By ~ 1

Author(s):

Anthony Jervis ◽

Julia Kemper ◽

Martin Richards ◽

Mathew Taylor ◽

Colin Clarke ◽

...

Keyword(s):

Formation Pressure ◽

Drilling Technology ◽

Drilling Time

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A case study of determining orientations of in-situ horizontal principal stresses based on electrical images of borehole failures at a deep drilling project

Eurock 2006: Multiphysics Coupling and Long Term Behaviour in Rock Mechanics ◽

10.1201/9781439833469.ch91 ◽

2006 ◽

pp. 625-630

Author(s):

W Lin ◽

E Yeh ◽

W Soh ◽

M Kinoshita ◽

H Ito ◽

...

Keyword(s):

Deep Drilling ◽

Principal Stresses ◽

Drilling Project

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Use of Liner Drilling Technology as a Solution to Hole Instability and Loss Intervals: A Case Study Offshore Indonesia

SPE Drilling & Completion ◽

10.2118/118806-pa ◽

2010 ◽

Vol 25 (01) ◽

pp. 96-101 ◽

Cited By ~ 1

Author(s):

Liao Jianhua ◽

Zhao Chao ◽

Jinxiang Li ◽

Steven Michael Rosenberg ◽

Keith Hillis ◽

...

Keyword(s):

Drilling Technology

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New Innovating Processes of Rock Disintegration

E3S Web of Conferences ◽

10.1051/e3sconf/201910501052 ◽

2019 ◽

Vol 105 ◽

pp. 01052

Author(s):

Gabriel Wittenberger ◽

Erika Škvareková ◽

Martin Ocilka

Keyword(s):

New Technologies ◽

Drilling Process ◽

Deep Drilling ◽

New Techniques ◽

Deep Well ◽

Rock Disintegration ◽

Drilling Technology ◽

Working Principle ◽

Physical Impact

Over the past years, deep drilling technology developed quickly. New technologies better quality of drilling work and accelerated the drilling process. At present, 20-25% are new techniques while 75-80% drilling methods used worldwide are traditional. Slovakia is quite at the rear of this tendency: our utilization ration shows 95-98% traditional drilling methods, in comparison to only 2-5% new ones. Advancement of new deep well boring technologies causes the evolution of new types of drilling sets for deep drilling (depending on applied techniques). Techniques used have a mechanical and physical impact for drilling of rock. Several tests and analyses of disintegration and drilling methods were performed over the last years. The article focuses on a description of the working principle and utilization possibilities.

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