PATENT CLAIM ANALYSIS

Application Number: 15884984
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["137", "486000"]

Abstract:
A positive displacement metering system measures the rate of travel of a free piston in a cylinder of known volume to determine the flow rate of a fluid out of the cylinder. The system may also measure and record the inlet and outlet pressures or the differential pressure between the fluid inlet and outlet. The control program positions a four-way valve which may function as an adjustable metering orifice in response to the measured flow rate and/or changes in the inlet and outlet pressures to achieve the desired flow rate. At the end of each stroke, the four-way valve is repositioned to reverse fluid flow through the metering cylinder. The system may revise the valve position settings for both forward and reverse strokes based on the measured time required for a full stroke of the piston within the cylinder at a certain valve position or a measured rate of movement of the free piston.

Claim (Index 15):
A method for injecting a fluid into a well comprising:\n operating a fluid injection system as recited in  claim 7 ; inputting a desired fluid flow rate; measuring the time required for the fluid barrier to move from a first position to a second position wherein at least one of the first position and the second position is displaced from a limit of travel of the fluid barrier; calculating an actual fluid flow rate from the measured time required for the fluid barrier to move from the first position to the second position; continuing operation of the fluid injection system at an existing position of the variable valve opening if the actual fluid flow rate is substantially equal to the desired fluid flow rate; continuing operation of the fluid injection system at a smaller position of the variable valve opening if the actual fluid flow rate is greater than the desired fluid flow rate; and continuing operation of the fluid injection system at a larger position of the variable valve opening if the actual fluid flow rate is less than the desired fluid flow rate.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 86.0
- Lexical Diversity: 2.05128
- Patent Class: 137.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['11934513', '13732999', '14790429', '12324079', '10704496']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8359768428219703
- 35 USC 102 Novelty (BERT): 0.4768551082062517
- Combined Prediction Score: 0.8000646693603984
- Mean Citation Score: 218.33171
- Max Citation Score: 256.4886
- Similarity Product: 210.64715409972663

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