PATENT CLAIM ANALYSIS

Application Number: 15909993
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-11
Patent Classification: ["175", "325100"]

Abstract:
A method of applying non-magnetic semi-helical hardbanding to a non-magnetic drill collar used in well-drilling operations is disclosed herein. The method involves applying semi-helical bands using Plasma Transferred Arc (PTA), laser hardfacing, or a similar thermal-welding technique. At least one non-magnetic alloy is used to form a set of evenly spaced single blades around the circumference of the drill collar. The blades are arranged such that no single blade extends around the full circumference of the collar.

Claim (Index 17):
A non-magnetic drill collar for use in well-drilling operations, said non-magnetic drill collar comprising:\n a longitudinally extending tubular wall having an outer peripheral surface, an inner bore defining a longitudinal axis, and opposing ends, each opposing end including a coupler configured to enable coupling of said non-magnetic drill collar to a rotary drill string; a raised pattern of helical bands evenly spaced about said outer peripheral surface, each said helical band comprising at least one non-magnetic hardfacing composition applied to said outer peripheral surface, said at least one non-magnetic hardfacing composition containing tungsten carbide, a length of at least about three inches, a width of at least about 0.5 inch, a spacing between said helical bands of at least about 0.9 inch, and a helical-band angle not less than about 30 degrees relative to said longitudinal axis; an intermediate buffer layer interposed between said stainless steel of said non-magnetic drill collar and said at least one non-magnetic hardfacing composition forming said helical bands, wherein said intermediate buffer layer comprises at least one non-magnetic metallic alloy; wherein said non-magnetic drill collar is constructed substantially of stainless steel; wherein said intermediate buffer layer is thermally fused with said outer peripheral surface; wherein said at least one non-magnetic hardfacing composition is thermally fused with said intermediate buffer layer; wherein said intermediate buffer layer has a thickness of between about 0.060 inch and about 0.090 inch; wherein said helical bands project outwardly of said outer peripheral surface not more than about 0.2 inch; wherein said coupler is configured to form a threaded connection; and wherein said couplers comprise at least one coupler configuration selected from a threaded male pin-type coupler and a threaded female box-type coupler.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 90.0
- Lexical Diversity: 1.49123
- Patent Class: 175.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14555786', '12541651', '10419713', '14051150', '15016094']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7173956056207197
- 35 USC 102 Novelty (BERT): 0.4938624026465294
- Combined Prediction Score: 0.6950422853233007
- Mean Citation Score: 248.837054
- Max Citation Score: 283.0736
- Similarity Product: 188.40499809970856

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test