"Bulletin of the Association of Drilling Contractors" №2, 2019

IMPROVING THE TOPOLOGY AND DYNAMIC CHARACTERISTICS OF THE TOOLING CASING STRING LINER FOR COMPLETING HORIZONTAL WELLS

Dvoinikov M.V. – Doctor of Technical Sciences, Professor, Head of the Well Drilling Department, St. Petersburg Mining University, dvoinik72@gmail.com dvoinik72@gmail.com
Kunshin A.A. – Postgraduate Student, Well Drilling Department, St. Petersburg Mining University, kunshin.a.a@gmail.com kunshin.a.a@gmail.com

УДК 52.47.15

Key words
: extended reach drilling well, slotted liner, hard geological conditions, finite elements method, well completion, digital prototype.

Construction of extended-reach wells is accompanied by significant capital expenditure and risks at all stages of construction. Lots of drilling problems and accidents arise during drilling and completing of such wells. When a filter is running into a well, the most common problems are slacking off and its inability to reach the projected depth. These problems may be related to the uncontrollable geomechanical processes in the hole, which are caused by the deformation of rocks. Liner design includes a filter that is installed directly in the productive interval zone. To reduce the risk of such accidents, the liner can be connected to rigid power sub or to a swivel. The liner swivel rotates together with the stationary part including the filter. The operational characteristics and the total life of the well are decreased when the liner’s structural integrity is destroyed.

IMPROVING THE TOPOLOGY AND DYNAMIC CHARACTERISTICS OF THE TOOLING CASING STRING LINER FOR COMPLETING HORIZONTAL WELLS

Dvoinikov M.V. – Doctor of Technical Sciences, Professor, Head of the Well Drilling Department, St. Petersburg Mining University, dvoinik72@gmail.com
Kunshin A.A. – Postgraduate Student, Well Drilling Department, St. Petersburg Mining University, kunshin.a.a@gmail.com


Key words: extended reach drilling well, slotted liner, hard geological conditions, finite elements method, well completion, digital prototype.

Construction of extended-reach wells is accompanied by significant capital expenditure and risks at all stages of construction. Lots of drilling problems and accidents arise during drilling and completing of such wells. When a filter is running into a well, the most common problems are slacking off and its inability to reach the projected depth. These problems may be related to the uncontrollable geomechanical processes in the hole, which are caused by the deformation of rocks. Liner design includes a filter that is installed directly in the productive interval zone. To reduce the risk of such accidents, the liner can be connected to rigid power sub or to a swivel. The liner swivel rotates together with the stationary part including the filter. The operational characteristics and the total life of the well are decreased when the liner’s structural integrity is destroyed.

 

The year 2021 number 1nd issue of the quarterly journal, "Bulletin of the Association of Drilling Contractors", is now available "Bulletin of the Association of Drilling Contractors"

ISSN 2073-9877

The scientific and technical journal, “Bulletin of the Association of Drilling Contractors”, is listed by the Higher Attestation Commission of the RF Ministry of Education and Science as one of the leading refereed journals and publications that feature main scientific results of doctoral and candidate’s dissertations.

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