Well Plan Parameter Guideline for Directional Drilling in the Gulf of Thailand

Authors

  • Jirawat Chewaroungroaj Chulalongkorn University
  • Anusara Hentoog Chulalongkorn University

DOI:

https://doi.org/10.4186/ej.2021.25.3.15

Keywords:

Gulf of Thailand, directional drilling, well planning, torque and drag

Abstract

Complex structured reservoir in the Gulf of Thailand (GOT) dictates directional drilling design requirement.  Torque and drag analysis is used in determination of drill ability from the planned well trajectory.  A set of well construction and typical reservoir data in GOT provide constraints for well plan parameters.  Both typical 2-dimension (2D) and 3-dimension (3D) well profiles are studied.  Each well profile requires different well plan parameters, namely kick off points, build up and drop off rates, inclinations, turn rates, and turn degrees.  Sets of well plan parameter guideline for each well type are provided for pre-check drill ability of the designs.  For each well profile types, the maximum first inclinations are shown as results for given sets of well plan parameters.  The deeper kick off point for 2D well profile benefits on torque and effective tension limits than shallower one.  For 3D well design, kick off point and the first inclination have strong effects on torque and effective tension whereas turn degree, build up rate, and turn rate have weaker effects.  In addition, high turn degree is drillable with deep kick off point, low build up rate and high turn rate combined.

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Author Biographies

Jirawat Chewaroungroaj
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Department of Mining and Petroleum Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand

Anusara Hentoog
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Department of Mining and Petroleum Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand

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Published In
Vol 25 No 3, Mar 31, 2021
How to Cite
[1]
J. Chewaroungroaj and A. Hentoog, “Well Plan Parameter Guideline for Directional Drilling in the Gulf of Thailand”, Eng. J., vol. 25, no. 3, pp. 15-40, Mar. 2021.
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