Reaming tool and methods of using the reaming tool in a wellbore
A reaming tool includes a tool body having a longitudinal axis and an upper end opposite a lower end and at least one blade extending outwardly from the external surface of the tool body. The blade includes a rolling element defining the gauge of the reaming tool, and a blade surface arranged undergauge of the rolling element and comprising a cutting surface.
1. A reaming tool comprising:
a tool body having a longitudinal axis and an upper end opposite a lower end; and
at least one blade extending outwardly from an external surface of the tool body, the at least one blade comprising:
a first section comprising
a rolling element defining a gauge of the reaming tool, and
a first cutting surface arranged undergauge of the rolling element, wherein a first set of cutting elements is disposed on at least a portion of the first cutting surface, and wherein the first set of cutting elements is arranged on the first cutting surface such that a set of tips of the first set of cutting elements are at a radial distance from the longitudinal axis of the tool body less than or equal to the gauge of the reaming tool;
a second section comprising a second cutting surface, wherein a second set of cutting elements is disposed on at least a portion of the second cutting surface, and wherein a distance from the longitudinal axis to the second cutting surface along the second section decreases from a first end of the first section towards the tool body;
a set of reserve holes on the second cutting surface, wherein each reserve hole of the set of reserve holes is plugged with a dowel pin of a set of dowel pins, and wherein each reserve hole of the set of reserve holes is positioned at a same axial position of the longitudinal axis of at least one cutting element of the second set of cutting elements; and
a set of inserts on the second cutting surface, wherein each respective insert of the set of inserts has a different size from any of the second set of cutting elements, and wherein each insert of the set of inserts is at a same axial position of the longitudinal axis as a reserve hole of the set of reserve holes on the second cutting surface.
2. The reaming tool according to claim 1 wherein an offset between the gauge of the reaming tool and a gauge of the blade is between 1 mm and 20 mm.
3. The reaming tool according to claim 1 , wherein the at least one blade further comprises a third section opposite to the second section, the third section comprising a third cutting surface, wherein a distance from the third cutting surface to the longitudinal axis gradually decreases from a second end of the first section opposite to the first end towards the tool body.
4. The reaming tool according to claim 1 , wherein the distance between the first section and the longitudinal axis of the tool body ranges from:
a first distance corresponding to the largest diameter of the blade; to
a second distance corresponding to at least 50% of a height of the gauge of the blade relative to the external surface of the tool body.
5. The reaming tool according to claim 1 , wherein the first section of the blade is substantially parallel to the longitudinal axis.
6. The reaming tool according to claim 1 , wherein the second set of cutting elements extends from a vicinity of the external surface of the tool body to a vicinity of the first section of the blade.
7. The reaming tool according to claim 1 , wherein an extended longitudinal axis of each cutting element of the first and second sets of cutting elements are positioned at an angle between 0° and 85° with respect to a plane perpendicular to the longitudinal axis of the tool body.
8. The reaming tool according to claim 1 , wherein the second set of cutting elements are positioned at a negative back rake angle.
9. The reaming tool according to claim 1 , wherein the rolling element comprises reaming elements.
10. The reaming tool according to claim 1 , wherein the first set of cutting elements comprises reaming elements which are undergauge relative to the gauge of the reaming tool.
11. The reaming tool according to claim 10 , wherein the reaming elements are reaming inserts with a flat top.
12. The reaming tool according to claim 1 , wherein the rolling element has a rotation axis comprised in a plane parallel to the longitudinal axis of the tool body.
13. The reaming tool according to claim 1 , wherein the at least one blade comprises a pocket in which is secured a cartridge comprising said rolling element.
14. The reaming tool according to claim 13 , wherein the cartridge comprises a first block and a second block supporting a shaft around which is arranged the rolling element.
15. The reaming tool according to claim 14 , wherein at least one of the first block and the second block are provided with a hard material coating.
16. The reaming tool according to claim 1 , wherein two extremities of the rolling element have a smaller diameter with respect to a middle portion of the rolling element between the two extremities, and wherein the two extremities comprise a set of reaming elements, and wherein the set of reaming elements comprise a set of tungsten carbide inserts or a set of milled teeth.
17. The reaming tool according to claim 1 , wherein each insert of the set of inserts comprises a tungsten carbide material or a diamond material.
18. A method of operating in a wellbore comprising:
providing a bottom hole assembly to a string;
providing a reaming tool in at least one location in the string within or above the bottom hole assembly, the reaming tool comprising:
a tool body having a longitudinal axis and an upper end opposite a lower end; and
at least one blade extending outwardly from an external surface of the tool body, the at least one blade comprising:
a first section comprising a rolling element defining a gauge of the reaming tool, and
a first cutting surface arranged undergauge of the rolling element, wherein a first set of cutting elements is disposed on at least a portion of the first cutting surface, and wherein the first set of cutting elements is arranged on the first cutting surface such that a set of tips of the first set of cutting elements are at a radial distance from the longitudinal axis of the tool body less than or equal to the gauge of the reaming tool;
a second section comprising a second cutting surface, wherein a second set of cutting elements is disposed on at least a portion of the second cutting surface, and wherein a distance from the longitudinal axis to the second cutting surface along the second section decreases from a first end of the first section towards the tool body;
a set of reserve holes on the second cutting surface, wherein each reserve hole of the set of reserve holes is plugged with a dowel pin of a set of dowel pins, and wherein each reserve hole of the set of reserve holes is positioned at a same axial position of the longitudinal axis of at least one cutting element of the second set of cutting elements; and
a set of inserts on the second cutting surface, wherein each insert has a different size from any of the second set of cutting elements, and wherein each insert of the set of inserts is at a same axial position of the longitudinal axis as a reserve hole of the set of reserve holes on the blade.
19. A reaming tool comprising:
a tool body having a longitudinal axis and an upper end opposite a lower end; and
a blade extending outwardly from an external surface of the tool body, wherein the blade comprises a blade surface, and wherein the blade comprises:
a first section comprising a rolling element, wherein the rolling element defines a gauge of the reaming tool, and wherein the rolling element comprises a set of reaming elements, wherein each of the set of reaming elements comprises a set of tungsten carbide inserts or milled teeth; and
a second section, wherein a distance from the longitudinal axis to the blade surface corresponding to the second section decreases from a first end of the first section towards the tool body, and wherein the second section comprises a second cutting surface of the blade surface, wherein the second cutting surface comprises:
a set of cutting elements, wherein the set of cutting elements comprises polycrystalline diamond;
a set of inserts, wherein each insert of the set of inserts is positioned at a same axial position as a cutting element of the set of cutting elements, and wherein each insert of the set of inserts has a young's modulus greater than or equal to that of tungsten carbide;
a set of reserve holes, wherein each respective reserve hole of the set of reserve holes shares an axial position with a respective cutting element of the set of cutting elements, and wherein the respective reserve hole is plugged with a cylindrical rod.
20. The reaming tool according to claim 19 , wherein two extremities of the rolling element have a smaller diameter with respect to a middle portion of the rolling element between both extremities, and wherein the two extremities comprise at least one reaming element of the set of reaming elements.