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Open-hole extension limit of offshore extended-reach well considering formation collapse.

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Title: Open-hole extension limit of offshore extended-reach well considering formation collapse.
Authors: Zhang, Juncheng1, Li, Jun1,2 lijun446@vip.163.com, Li, Zhonghui3, Hu, Pengjie3, Lian, Wei2, Yang, Hongwei1, Han, Jiaming4
Source: Journal of Petroleum Exploration & Production Technology. Sep2024, Vol. 14 Issue 8/9, p2473-2489. 17p.
Subject Terms: *Drilling muds, *Mudflows, *Prediction models, *Mudstone
Abstract: The current extension limit prediction model for offshore extended-reach well (ERW) in mudstone does not consider the formation collapse, which poses a huge risk to offshore drilling construction. To address this problem, this paper presents new open-hole extension limit prediction model for ERW. By considering formation collapse, rate of penetration (ROP), and annular pressure loss, the extension limit models during normal drilling and tripping were derived. The sensitivity of geological and engineering factors was evaluated by analyzing limits for wells 1H and 2H. The research results showed that: (1) The extension limit increases with the ROP and formation collapse duration, but decreases with the increase in mud weight, plastic viscosity, and flow rate. (2) In ERWs, the mud flow rate has a significant impact on the extension limit than the plastic viscosity of mud fluid. However, mud weight has the least impact compared to the two. (3) Considering various parameters, the predicted extension limit of well 1H, when the mud weight is 1.16 g/cm3 [9.67 ppg], is 1593.28 m [5225.96 ft] less than the limit when the collapse period is not considered. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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An: 179504829
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Open-hole extension limit of offshore extended-reach well considering formation collapse.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Zhang%2C+Juncheng%22">Zhang, Juncheng</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Li%2C+Jun%22">Li, Jun</searchLink><relatesTo>1,2</relatesTo><i> lijun446@vip.163.com</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Zhonghui%22">Li, Zhonghui</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Hu%2C+Pengjie%22">Hu, Pengjie</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Lian%2C+Wei%22">Lian, Wei</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Yang%2C+Hongwei%22">Yang, Hongwei</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Han%2C+Jiaming%22">Han, Jiaming</searchLink><relatesTo>4</relatesTo>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Journal+of+Petroleum+Exploration+%26+Production+Technology%22">Journal of Petroleum Exploration & Production Technology</searchLink>. Sep2024, Vol. 14 Issue 8/9, p2473-2489. 17p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Drilling+muds%22">Drilling muds</searchLink><br />*<searchLink fieldCode="DE" term="%22Mudflows%22">Mudflows</searchLink><br />*<searchLink fieldCode="DE" term="%22Prediction+models%22">Prediction models</searchLink><br />*<searchLink fieldCode="DE" term="%22Mudstone%22">Mudstone</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The current extension limit prediction model for offshore extended-reach well (ERW) in mudstone does not consider the formation collapse, which poses a huge risk to offshore drilling construction. To address this problem, this paper presents new open-hole extension limit prediction model for ERW. By considering formation collapse, rate of penetration (ROP), and annular pressure loss, the extension limit models during normal drilling and tripping were derived. The sensitivity of geological and engineering factors was evaluated by analyzing limits for wells 1H and 2H. The research results showed that: (1) The extension limit increases with the ROP and formation collapse duration, but decreases with the increase in mud weight, plastic viscosity, and flow rate. (2) In ERWs, the mud flow rate has a significant impact on the extension limit than the plastic viscosity of mud fluid. However, mud weight has the least impact compared to the two. (3) Considering various parameters, the predicted extension limit of well 1H, when the mud weight is 1.16 g/cm3 [9.67 ppg], is 1593.28 m [5225.96 ft] less than the limit when the collapse period is not considered. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s13202-024-01835-2
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 17
        StartPage: 2473
    Subjects:
      – SubjectFull: Drilling muds
        Type: general
      – SubjectFull: Mudflows
        Type: general
      – SubjectFull: Prediction models
        Type: general
      – SubjectFull: Mudstone
        Type: general
    Titles:
      – TitleFull: Open-hole extension limit of offshore extended-reach well considering formation collapse.
        Type: main
  BibRelationships:
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      – PersonEntity:
          Name:
            NameFull: Zhang, Juncheng
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          Name:
            NameFull: Li, Jun
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            NameFull: Li, Zhonghui
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            NameFull: Hu, Pengjie
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            NameFull: Lian, Wei
      – PersonEntity:
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            NameFull: Yang, Hongwei
      – PersonEntity:
          Name:
            NameFull: Han, Jiaming
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          Dates:
            – D: 01
              M: 09
              Text: Sep2024
              Type: published
              Y: 2024
          Identifiers:
            – Type: issn-print
              Value: 21900558
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            – Type: volume
              Value: 14
            – Type: issue
              Value: 8/9
          Titles:
            – TitleFull: Journal of Petroleum Exploration & Production Technology
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