Research on the Mechanism of Sand Bridge Stuck Drill in Deep Coal and Rock Gas Horizontal Wells.
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| Title: | Research on the Mechanism of Sand Bridge Stuck Drill in Deep Coal and Rock Gas Horizontal Wells. |
|---|---|
| Authors: | Hui, Cheng1,2 (AUTHOR), Ouyang, Yong1,2 (AUTHOR) oyy_cq@petrochina.com.cn, Duan, Zhifeng1,2 (AUTHOR), Xu, Xiaoyue1,2 (AUTHOR), Teng, Yuxiang1,2 (AUTHOR), Liu, Mingyang1,2 (AUTHOR), Zhang, Hui3 (AUTHOR), Chen, Long3 (AUTHOR) |
| Source: | Energy Science & Engineering. Feb2026, Vol. 14 Issue 2, p854-865. 12p. |
| Subject Terms: | *Horizontal wells, *Drilling fluids, *Coalbed methane, *Directional drilling, *Boreholes |
| Abstract: | Deep coal and rock gas, as an important component of unconventional natural gas, has attracted much attention due to its abundant reserves. However, in the current process of coal and rock gas development, underground accidents of burying drilling tools due to sand bridge stuck drill accidents often occur, which is one of the important difficulties faced by coal and rock gas wells at present. This paper systematically studies the mechanism of stuck drill caused by sand Bridges in deep coal‐rock‐gas horizontal Wells for the problem of stuck drill in sand Bridges. Studies show that collapse and block shedding caused by wellbore instability a key factors in the formation of sand bridges. Traditional models have limited applicability in deep coal‐rock gas reservoirs because they ignore this factor. Based on the drilling conditions, considering the "bulldozer effect" and the influence of coal seam collapse and block drop, the calculation models of the stuck pipe resistance of permeable and impermeable sand bridges were established, respectively. The calculation methods of the sand bridge volume and the additional axial force and torque were derived. Through sensitivity analysis, the results show that the length of the sand bridge, the annular clearance, and the internal and external pressure difference significantly affect the stuck pipe resistance. Among them, the resistance effect of the impermeable sand bridge is particularly prominent. The engineering applicability of the model was verified through the example of the horizontal well for coal and rock gas in Changqing. The research proposes control measures such as optimizing the performance of drilling fluid, staged drilling, and controlling the drilling speed, providing theoretical support and technical reference for the drilling operation of deep coal, rock, and gas horizontal Wells. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 191576653 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Research on the Mechanism of Sand Bridge Stuck Drill in Deep Coal and Rock Gas Horizontal Wells. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Hui%2C+Cheng%22">Hui, Cheng</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ouyang%2C+Yong%22">Ouyang, Yong</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> oyy_cq@petrochina.com.cn</i><br /><searchLink fieldCode="AR" term="%22Duan%2C+Zhifeng%22">Duan, Zhifeng</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xu%2C+Xiaoyue%22">Xu, Xiaoyue</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Teng%2C+Yuxiang%22">Teng, Yuxiang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Mingyang%22">Liu, Mingyang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Hui%22">Zhang, Hui</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Long%22">Chen, Long</searchLink><relatesTo>3</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Energy+Science+%26+Engineering%22">Energy Science & Engineering</searchLink>. Feb2026, Vol. 14 Issue 2, p854-865. 12p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Horizontal+wells%22">Horizontal wells</searchLink><br />*<searchLink fieldCode="DE" term="%22Drilling+fluids%22">Drilling fluids</searchLink><br />*<searchLink fieldCode="DE" term="%22Coalbed+methane%22">Coalbed methane</searchLink><br />*<searchLink fieldCode="DE" term="%22Directional+drilling%22">Directional drilling</searchLink><br />*<searchLink fieldCode="DE" term="%22Boreholes%22">Boreholes</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Deep coal and rock gas, as an important component of unconventional natural gas, has attracted much attention due to its abundant reserves. However, in the current process of coal and rock gas development, underground accidents of burying drilling tools due to sand bridge stuck drill accidents often occur, which is one of the important difficulties faced by coal and rock gas wells at present. This paper systematically studies the mechanism of stuck drill caused by sand Bridges in deep coal‐rock‐gas horizontal Wells for the problem of stuck drill in sand Bridges. Studies show that collapse and block shedding caused by wellbore instability a key factors in the formation of sand bridges. Traditional models have limited applicability in deep coal‐rock gas reservoirs because they ignore this factor. Based on the drilling conditions, considering the "bulldozer effect" and the influence of coal seam collapse and block drop, the calculation models of the stuck pipe resistance of permeable and impermeable sand bridges were established, respectively. The calculation methods of the sand bridge volume and the additional axial force and torque were derived. Through sensitivity analysis, the results show that the length of the sand bridge, the annular clearance, and the internal and external pressure difference significantly affect the stuck pipe resistance. Among them, the resistance effect of the impermeable sand bridge is particularly prominent. The engineering applicability of the model was verified through the example of the horizontal well for coal and rock gas in Changqing. The research proposes control measures such as optimizing the performance of drilling fluid, staged drilling, and controlling the drilling speed, providing theoretical support and technical reference for the drilling operation of deep coal, rock, and gas horizontal Wells. [ABSTRACT FROM AUTHOR] |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=191576653 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1002/ese3.70387 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 854 Subjects: – SubjectFull: Horizontal wells Type: general – SubjectFull: Drilling fluids Type: general – SubjectFull: Coalbed methane Type: general – SubjectFull: Directional drilling Type: general – SubjectFull: Boreholes Type: general Titles: – TitleFull: Research on the Mechanism of Sand Bridge Stuck Drill in Deep Coal and Rock Gas Horizontal Wells. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Hui, Cheng – PersonEntity: Name: NameFull: Ouyang, Yong – PersonEntity: Name: NameFull: Duan, Zhifeng – PersonEntity: Name: NameFull: Xu, Xiaoyue – PersonEntity: Name: NameFull: Teng, Yuxiang – PersonEntity: Name: NameFull: Liu, Mingyang – PersonEntity: Name: NameFull: Zhang, Hui – PersonEntity: Name: NameFull: Chen, Long IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 02 Text: Feb2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 20500505 Numbering: – Type: volume Value: 14 – Type: issue Value: 2 Titles: – TitleFull: Energy Science & Engineering Type: main |
| ResultId | 1 |
