MOLDS AND METHODS OF FORMING MOLDS ASSOCIATED WITH MANUFACTURE OF ROTARY DRILL BITS AND OTHER DOWNHOLE TOOLS

• US 20080028891A1
• Filed: 10/19/2007
• Published: 02/07/2008
• Est. Priority Date: 04/28/2006
• Status: Active Grant

• Current Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Original Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Inventors: Calnan, Barry, Sillen, Valerie
• Granted Patent: US 7,832,457 B2
• Time in Patent Office: Days
• US Class Current: 76/108.4
• CPC Class Codes: B22F 10/14 by jetting of binder onto a bed of metal powder
• CPC Class Codes: B22F 2005/001 Cutting tools, earth boring or grinding tool other than table ware
• CPC Class Codes: B22F 5/007 of moulds
• CPC Class Codes: B33Y 10/00 Processes of additive manufacturing
• CPC Class Codes: B33Y 50/00 Data acquisition or data processing for additive manufacturing
• CPC Class Codes: B33Y 70/00 Materials specially adapted for additive manufacturing
• CPC Class Codes: B33Y 80/00 Products made by additive manufacturing
• CPC Class Codes: E21B 10/00 Drill bits specially adapted for deflecting the direction of boring E21B7/064; with means for collecting substances E21B27/00
• CPC Class Codes: Y02P 10/25 Process efficiency

Abstract

Three dimensional printing equipment and techniques may be used in combination with three dimensional design data associated with well drilling equipment and well completion equipment to form molds associated with manufacture of such equipment. For example, such molds may be used to form a bit body or other components associated with a rotary drill bit. For some applications composite or matrix materials may be placed in the mold to form a matrix bit body. Heat transfer characteristics of the mold may be optimized for heating and/or cooling of the matrix materials to provide optimum fracture resistant (toughness) and optimum erosion, abrasion and/or wear resistance for portions of the bit body. Such molds may also be used to form steel bit bodies associated with fixed cutter rotary drill bits and other components associated with a wide variety of well drilling equipment and well completion equipment.

Claims

1. A method of forming a mold operable to fabricate at least one component of a well drilling tool comprising:

(a) using a three dimensional (3D) printer to deposit a thin layer of powder;

(b) using the 3D printer to apply binder material to the thin layer of powder having a configuration and dimensions based on three dimensional (3D) design data associated with the well drilling tool; and

repeating steps (a) and (b) to produce the mold with a mold cavity having a configuration and dimensions based on the 3D design data for the associated well drilling tool.

2. The method of claim 1 further comprising using 3D computer aided design (CAD) data.

3. The method of claim 1 further comprising using material selected from the group consisting of sand, graphite, metal carbides, metal nitrides and metal oxides to form at least a portion of the powder.

4. The method of claim 1 further comprising selecting the binder material from non-flammable adhesives satisfactory for bonding with each layer of the powder with adjacent layers of the powder to form the mold.

5. The method of claim 4 further comprising selecting the binder material from the group consisting of one component adhesives and two component adhesives.

6. The method of claim 1 further comprising forming the mold with exterior dimensions, exterior configuration, interior dimensions and interior configuration optimized for heating and cooling materials placed within the mold during formation of the at least one component.

7. The method of claim 1 further comprising forming a container having a generally hollow, cylindrical configuration defined in part by an open, first end sized to receive the mold therein and a second, closed end having an interior configuration compatible with an associated exterior configuration of the mold.

8. The method of claim 7 further comprising forming the container with exterior dimensions, exterior configuration, interior dimensions and interior configuration optimized for heating and cooling the mold disposed within the container.

9. The method of claim 1 further comprising forming portions of the mold with at least two different layers of sand selected to provide optimum heating and cooling of materials placed within the mold during formation of the at least one component.

10. The method of claim 1 further comprising forming the at least one component for the well drilling tool selected from the group consisting of a bit head, a core bit, a reamer, a near bit reamer, an under reamer and a hole opener, non-retrievable drilling components, aluminum drill bit bodies associated with casing drilling of wellbores, drill string stabilizers, cones for roller cone drill bits, models for forging dyes used to fabricate support arms for roller cone drill bits, arms for fixed reamers, arms for expandable reamers, internal components associated with expandable reamers, sleeves attached to an up hole end of a rotary drill bit, rotary steering tools, logging while drilling tools, measurement while drilling tools, side wall coring tools, fishing spears, washover tools, rotors, stators or housing for downhole drilling motors, blades and housings for downhole turbines, and other downhole tools having complex configurations or asymmetric geometries associated with forming a wellbore.

41. A well drilling tool comprising at least one component formed using the method of claim 1.

11. A method of forming a mold operable to fabricate at least one component of a rotary drill bit comprising:

(a) using a three dimensional (3D) printer to deposit a thin layer of powder;

(b) using the 3D printer to apply binder material to the thin layer of powder corresponding with a configuration and dimensions based on three dimensional (3D) design data for the rotary drill bit; and

repeating steps (a) and (b) to produce a mold having a mold cavity with a configuration and dimensions based on the 3D design data associated with the rotary drill bit.

12. The method of claim 11 further comprising using material selected from the group consisting of sand, graphite, carbide and boron nitride to form a least a portion of the powder.

13. The method of claim 11 further comprising selecting the binder material from adhesives satisfactory for bonding each layer of the powder with adjacent layers of the powder to form the mold.

14. The method of claim 11 further comprising forming the mold with exterior dimensions, exterior configuration, interior dimensions and interior configuration optimized for heating and cooling materials placed within the mold during formation of the at least one component.

15. The method of claim 11 further comprising forming a container having a generally hollow, cylindrical configuration defined in part by an open, first end sized to receive the mold therein and a second, closed end having an interior configuration compatible with an associated exterior configuration of the mold.

16. The method of claim 17 further comprising forming the container with exterior dimensions, exterior configuration, interior dimensions and interior configuration optimized for heating and cooling the mold disposed within the container.

17. The method of claim 11 further comprising forming portions of the mold with a variable wall thickness selected to provide optimum heating and cooling of matrix materials placed within the mold during formation of a matrix bit heat for the rotary drill bit.

18. The method of claim 11 further comprising forming portion of the mold with a variable wall thickness selected to provide optimum cooling of a molten steel alloy placed within the mold during formation of a steel bit head for the rotary drill bit.

19. The method of claim 11 further comprising:

forming the mold cavity with a plurality of displacements disposed therein and each displacement having a complex, arcuate configuration corresponding with a desired configuration for a respective fluid flow path disposed on exterior portions of the bit head; and

forming the mold cavity with a plurality of negative blade profiles with each negative blade profile disposed between associated displacements and each negative blade profile having a complex, arcuate configuration corresponding with a desired configuration for a respective blade disposed on exterior portions of the bit head.

20. The method of claim 19 further comprising forming a plurality of fluid flow channels disposed on exterior portions of the mold with each fluid flow channel located generally proximate one of the displacements disposed within the mold cavity.

21. The method of claim 20 further comprising forming each fluid flow channel disposed on exterior portions of the mold with a complex, arcuate configuration.

42. A rotary drill bit comprising at least one component formed using the method of claim 11.

22. A method of forming a bit head for a matrix bit body comprising:

(a) forming a first powder from at least a first infiltration material with heat transfer characteristics and dimensional stability characteristics in temperature ranges associated the matrix bit body;

(b) using a three dimensional (3D) printer to deposit a thin layer of the first powder;

(c) using the 3D printer to apply a binder material to the thin layer of the first powder with a configuration and dimensions corresponding to three dimensional (3D) design data associated with the bit head; and

repeating steps (b) and (c) to produce the bit head with a configuration and dimensions based on the 3D design data for the matrix bit body.

23. The method of claim 22 further comprising selecting the binder material from a group consisting of metallic alloys of copper, nickel, zinc, magnesium, lead, tin, cobalt, silver, phosphorous or mixtures of such metallic alloys.

24. The method of claim 22 further comprising selecting the first infiltration material from a group consisting of tungsten carbide, monotungsten carbide, ditungsten carbide, macro crystalline tungsten carbide, other metal carbides, metal borides, metal oxides, metal nitrides, polycrystalline diamond (PCD) or mixtures of such infiltration materials.

25. The method of claim 22 further comprising:

forming a second powder from a second infiltration material with heat transfer characteristics and dimensional stability characteristics in temperature ranges associated with the matrix bit body; and

using the 3D printer to form at least a portion of the plurality of thin layers with the second powder.

26. The method of claim 25 further comprising selecting the second infiltration material from a group consisting of tungsten carbide, monotungsten carbide, ditungsten carbide, macro crystalline tungsten carbide, other metal carbides, metal borides, metal oxides, metal nitrides, polycrystalline diamond (PCD) or mixtures of such infiltration materials.

43. A matrix bit body for a rotary drill bit formed using the method of claim 22.

27. A method of forming a mold operable to fabricate at least one component of a steel bit body for a fixed cutter drill bit comprising:

(a) using a three dimensional (3D) printer to deposit a thin layer of powder;

(b) using the 3D printer to apply binder material to the thin layer of powder having a configuration and dimensions based on the three dimensional (3D) design data associated with the at least one component of the steel bit body; and

repeating steps (a) and (b) to produce the mold with a mold cavity having a configuration and dimensions corresponding with the 3D design data for the associated at least one component.

28. The method of claim 27 further comprising:

placing the mold in a container operable to control cooling of the mold;

pouring a molten steel alloy into the mold; and

solidifying the molten steel alloy to form the at least one component.

29. The method of claim 28 further comprising forming the mold with exterior dimensions, exterior configuration, interior dimensions and interior configuration optimized for cooling the molten steel alloy during solidification of the at least one component.

30. The method of claim 27 further comprising using the 3D printer to deposit a plurality of the thin layers of powder and applying binder material to each of the thin layers of powder to form a mold cavity having a configuration and dimensions corresponding with a bit head for the steel bit body.

31. The method of claim 27 further comprising using the 3D printer to deposit a plurality of the thin layers of powder and applying binder material to each of the thin layers of powder to form a mold cavity having a configuration and dimensions operable to form a bit head and a metal shanks as integral components of the steel bit body.

32. A method of forming a mold operable to fabricate at least one component of a well completion tool comprising:

(a) using a three dimensional (3D) printer to deposit a thin layer of powder;

(b) using the 3D printer to apply binder material to the thin layer of powder having a configuration and dimensions derived from three dimensional (3D) design data associated with the well completion tool; and

repeating steps (a) and (b) to produce a mold having a mold cavity with a configuration and dimensions based on the 3D design data for the associated well completion tool.

33. The method of claim 32 further comprising using material selected from the group consisting of sand, graphite, carbide and boron nitride to form at least a portion of the powder.

34. The method of claim 32 further comprising selecting the binder material from adhesives satisfactory for bonding each layer of the powder with adjacent layers of the powder to form the mold.

35. The method of claim 34 further comprising selecting the binder material from the group consisting of one component adhesives and two component adhesives.

36. The method of claim 32 further comprising forming the mold with exterior dimensions, exterior configuration, interior dimensions and interior configuration optimized for heating and cooling materials placed within the mold during formation of the at least one component.

37. The method of claim 32 further comprising forming a container having a generally hollow, cylindrical configuration defined in part by an open, first end sized to receive the mold therein and a second, closed end having an interior configuration compatible with an associated exterior configuration of the mold.

38. The method of claim 37 further comprising forming the container with exterior dimensions, exterior configuration, interior dimensions and interior configuration optimized for heating and cooling the mold disposed within the container.

39. The method of claim 32 further comprising forming portions of the mold with a variable wall thickness selected to provide optimum heating and cooling of materials placed within the mold during formation of the at least one component.

40. The method of claim 32 further comprising forming the at least one component for a well completion tool selected from the group consisting of production packer components, float equipment, casing shoes, casing shoes with cutting structures, well screen bodies and connectors, gas lift mandrels, downhole tractors for pulling coiled tubing, tool joints, wired (electrical and/or fiber optic) tool joints, drill in well screens, rotors, stator or housings for downhole motors, blades or housings for downhole turbines, latches for downhole tools, downhole wireline service tools and other downhole tools have complex configurations or asymmetric geometries.

44. A well completion tool comprising at least one component formed using the method of claim 32.

45. A mold operable to fabricate a bit head for a bit body comprising:

a mold cavity extending between a first open end of the mold to a second closed end of the mold;

a plurality of displacements disposed within the mold cavity;

each displacement having a complex, arcuate configuration corresponding with a desired configuration for a respective fluid flow path disposed on exterior portions of the bit head;

a plurality of negative blade profiles disposed within the mold cavity between associated displacements;

each negative blade profile having a complex, arcuate configuration corresponding with a desired configuration for a respective blade disposed on exterior portions of the bit head;

a plurality of fluid flow channels disposed on exterior portions of the mold with each fluid flow channel located generally proximate one of the displacements disposed within the mold cavity; and

each fluid flow channel disposed on exterior portions of the mold having an arcuate configuration.