PATENT CLAIM ANALYSIS

Application Number: 15945616
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["166", "332100"]

Abstract:
A casing landing and cementing tool has a wellbore obstruction-clearing tool at a downhole end thereof and a check valve uphole of any fluid vulnerable components to isolate the vulnerable components from the threat of cement incursion. The check valve is manufactured of drillable materials, the plunger being axially actuable but non-rotatable, the valve body being threadably secured within the tool. In one aspect the tool is a sleeve bit rotatably and reciprocally coupled about a mandrel secured to a non-rotating casing string, the check valve located in the mandrel. In another aspect, the tool is a bit coupled to a rotatable casing string, the check valve located in the bit.

Claim (Index 2):
The obstruction-clearing tool of  claim 1  further comprising a check valve, the check valve comprising:\n an uphole seat body having a bore and a seal seat; \n a plunger having an uphole head and a seal face about the head for sealable engagement with the seal seat in a closed position and a downhole guide shaft for axially guiding the plunger, the shaft having one or more ribs extending axially and radially therefrom; and \n a downhole retainer body having a bore contiguous with the seal body's bore and an upstanding guide boss having a guide bore for slidably receiving the shaft, the boss having one or more axially extending slots open to the guide bore, each slot receiving a corresponding shaft rib for guiding the plunger axially between the closed position and an open position without relative rotation of the plunger.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 91.0
- Lexical Diversity: 1.93548
- Patent Class: 166.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13062129', '15165970', '15145082', '15537843', '12894433']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8106760300370316
- 35 USC 102 Novelty (BERT): 0.554235057922677
- Combined Prediction Score: 0.7850319328255961
- Mean Citation Score: 393.550514
- Max Citation Score: 459.11182
- Similarity Product: 349.67888999735595

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

Dataset: test