Method of Designing a Bottom Hole Assembly and a Bottom Hole Assembly
First Claim
1. A method of designing a bottom hole assembly comprising a drill bit having a bit body and a plurality of cutter elements attached thereto, which method comprises:
- selecting a design;
determining at least one or more properties of the drill bit; and
determining an arrangement for the plurality of cutter elements to be positioned upon the bit body;
wherein the plurality of cutter elements comprise at least one of a first cutter element and at least one of a second cutter element;
wherein the first cutter element is a thermally stable polycrystalline diamond cutter element containing a diamond body having a material microstructure comprising a matrix phase of bonded together diamond crystals formed at high pressure/high temperature conditions in the presence of a catalyst material, the diamond body having a surface and including interstitial regions disposed between the diamond crystals, wherein the interstitial regions within the diamond body are substantially free of the catalyst material and the diamond body further comprises;
a first region comprising an infiltrant material disposed within the interstitial regions and remote from the surface, anda second region comprising interstitial regions that are substantially free of the infiltrant material; and
wherein one or more areas of the drill bit have different properties relative to other areas of the drill bit;
wherein the second cutter element differs from the first cutter element in at least one cutter element property; and
wherein the at least one first cutter element and the at least one second cutter element are positioned on the surface of the bit body based on the one or more drill bit properties and the cutter element properties.
1 Assignment
0 Petitions
Accused Products
Abstract
A bottom hole assembly containing a drill bit. The drill bit additionally has a plurality of primary cutter elements mounted thereto. The plurality of cutter elements comprise one or more first cutter elements and one or more second cutter elements. The second cutter element differs from the first cutter element in at least one cutter element property. The first cutter element has a diamond body containing a first region comprising an infiltrant material disposed within the interstitial regions. The first region is located remote from the working surface of the diamond body. The first cutter element also contains a second region comprising interstitial regions that are substantially free of the infiltrant material. The second region is located along at least the working surface of the diamond body. Also included are a cutter element, method of designing a bottom hole assembly as well as method of designing a drill bit.
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Citations
30 Claims
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1. A method of designing a bottom hole assembly comprising a drill bit having a bit body and a plurality of cutter elements attached thereto, which method comprises:
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selecting a design; determining at least one or more properties of the drill bit; and determining an arrangement for the plurality of cutter elements to be positioned upon the bit body; wherein the plurality of cutter elements comprise at least one of a first cutter element and at least one of a second cutter element; wherein the first cutter element is a thermally stable polycrystalline diamond cutter element containing a diamond body having a material microstructure comprising a matrix phase of bonded together diamond crystals formed at high pressure/high temperature conditions in the presence of a catalyst material, the diamond body having a surface and including interstitial regions disposed between the diamond crystals, wherein the interstitial regions within the diamond body are substantially free of the catalyst material and the diamond body further comprises; a first region comprising an infiltrant material disposed within the interstitial regions and remote from the surface, and a second region comprising interstitial regions that are substantially free of the infiltrant material; and wherein one or more areas of the drill bit have different properties relative to other areas of the drill bit; wherein the second cutter element differs from the first cutter element in at least one cutter element property; and wherein the at least one first cutter element and the at least one second cutter element are positioned on the surface of the bit body based on the one or more drill bit properties and the cutter element properties. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A drill bit for drilling a borehole in earthen formations, the drill bit comprising:
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a bit body having a bit axis and a bit face including a cone region, a shoulder region, and a gage region; one or more primary blades extending radially along the bit face from the cone region through the shoulder region to the gage region; a plurality of primary cutter elements mounted to one or more of the primary blades in the shoulder region which comprise a first cutter element; a plurality of primary cutter elements mounted to one or more of the primary blades in the cone region which comprise a second cutter element; wherein the first cutter element is a thermally stable polycrystalline diamond cutter element containing a diamond body having a material microstructure comprising a matrix phase of bonded together diamond crystals formed at high pressure/high temperature conditions in the presence of a catalyst material, the diamond body having a surface and including interstitial regions disposed between the diamond crystals, wherein the interstitial regions within the diamond body are substantially free of the catalyst material and the diamond body comprises; a first region comprising an infiltrant material disposed within the interstitial regions and remote from the surface, and a second region comprising interstitial regions that are substantially free of the infiltrant material; and wherein the second cutter element differs from the first cutter element in at least one cutter element property. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A drill bit for drilling a borehole in earthen formations, the drill bit comprising:
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a bit body having a bit axis and a bit face including a cone region, a shoulder region, and a gage region; one or more primary blades extending radially along the bit face from the cone region through the shoulder region to the gage region; a plurality of primary cutter elements mounted to one or more of the primary blades in the shoulder region which comprise a first cutter element; a plurality of primary cutter elements mounted to one or more of the primary blades in the cone region which comprise a second cutter element; wherein the first cutter element is a thermally stable polycrystalline diamond cutter element containing a diamond body having a material microstructure comprising a matrix phase of bonded together diamond crystals formed at high pressure/high temperature conditions in the presence of a catalyst material, the diamond body having a surface and including interstitial regions disposed between the diamond crystals, wherein the interstitial regions within the diamond body are substantially free of the catalyst material and the diamond body comprises; a first region comprising an infiltrant material disposed within the interstitial regions and remote from the surface, and a second region comprising interstitial regions that are substantially free of the infiltrant material, wherein the first cutter element has undergone two or more high pressure/high temperature processes; and wherein the second cutter element differs from the first cutter element in at least one cutter element property and has undergone only one high pressure/high temperature process to form the second cutter element.
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29. A method of designing a drill bit having a bit body and a plurality of cutter elements attached thereto, which method comprises:
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selecting a design; determining at least one or more properties of the drill bit; and determining an arrangement for the plurality of cutter elements to be positioned upon the bit body; wherein the plurality of cutter elements comprise at least one of a first cutter element and at least one of a second cutter element; wherein the first cutter element is a thermally stable polycrystalline diamond cutter element containing a diamond body having a material microstructure comprising a matrix phase of bonded together diamond crystals formed at high pressure/high temperature conditions in the presence of a catalyst material, the diamond body having a surface and including interstitial regions disposed between the diamond crystals, wherein the interstitial regions within the diamond body are substantially free of the catalyst material and the diamond body further comprises; a first region comprising an infiltrant material disposed within the interstitial regions and remote from the surface, and a second region comprising interstitial regions that are substantially free of the infiltrant material; and wherein one or more areas of the drill bit have different properties relative to other areas of the drill bit; wherein the second cutter element differs from the first cutter element in at least one cutter element property; and wherein the at least one first cutter element and the at least one second cutter element are positioned on the surface of the bit body based on the one or more drill bit properties and the cutter element properties.
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30. A cutter element comprising a diamond body having a material microstructure comprising a matrix phase of bonded together diamond crystals formed at high pressure/high temperature conditions in the presence of a catalyst material, the diamond body having a surface and including interstitial regions disposed between the diamond crystals which are substantially free of the catalyst material and the diamond body comprises:
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a first region comprising an infiltrant material disposed within the interstitial regions and remote from the surface; and a second region comprising a replacement material disposed within the interstitial regions.
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Specification