PATENT CLAIM ANALYSIS

Application Number: 15755094
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["175", "005000"]

Abstract:
A method of operating a drilling system. The drilling system includes a drill string extending into a wellbore, a driver which rotates the drill string, a pump to pump drilling fluid down the drill string, a wellhead mounted at the wellbore, a riser extending up from the wellhead around the drill string, a blowout preventer mounted on the wellhead, a riser closure device mounted in the riser, a first return conduit, and a flow outlet arranged in the riser below the riser closure device. The method includes operating the driver to stop a rotation of the drill string, closing the riser closure device if it is not already closed, operating the pump to stop a pumping of drilling fluid down the drill string, closing the blowout preventer, and increasing a wellbore pressure by controlling a rate of the flow of the fluid along the first return conduit.

Claim (Index 56):
The method as recited in  claim 49 , wherein,\n the drilling system further includes:\n a second return conduit configured to extend from an outlet arranged at the lower annular space around the drill string below the sealing element of the blow out preventer, and \n a valve arranged in the second return conduit, the valve normally being closed so as to prevent a flow of the fluid along the second return conduit, but which is configured to allow or to prevent the flow of the fluid along the second return conduit, and \n the method further comprises the step of:\n j) opening the valve in the second return conduit.

Metadata:
- Claim Count in Document: 91.0
- Percentile: 88.0
- Lexical Diversity: 2.65574
- Patent Class: 175.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14170666', '12936254', '15294798', '14872753', '14950122']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7858866902015827
- 35 USC 102 Novelty (BERT): 0.535987546695
- Combined Prediction Score: 0.7608967758509245
- Mean Citation Score: 414.903062
- Max Citation Score: 440.86136
- Similarity Product: 318.01658333761213

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

Dataset: test