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 7):
A fluid injection system for controlling the distribution of fluid from a supply line to a selected well at an adjustable rate, comprising:\n a metering body having a bore for containing fluid; a fluid barrier segregating the bore into variable-volume first and second chambers, the fluid barrier movable in response to a pressure difference between the first and second chambers; a first input-output port for passing fluid into and out of the first chamber, and a second input-output port for passing fluid into and out of the second chamber; a multi-position valve comprising a first position for passing fluid from the supply line into the first chamber, thereby moving the fluid barrier to displace fluid from the second chamber back through the valve to an injection point, and a second position for passing fluid from the supply line to the second chamber, thereby moving the fluid barrier to displace fluid from the first chamber back through the valve to the injection point, the valve further comprising a variable valve opening for controlling flow between the supply line and the metering body; a linear position sensor configured for sensing any position of the fluid barrier within the metering body; and a control system in communication with the position sensor and including a timer for timing movement of the fluid barrier between known positions, the control system configured to selectively adjust the variable valve opening in response to timed movement of the fluid barrier between known positions and to selectively reverse the position of the multi-position valve in response to certain positions of the fluid barrier.

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): 0.8356743662309496
- 35 USC 102 Novelty (BERT): 0.4794137166773325
- Combined Prediction Score: 0.8000483012755879
- Mean Citation Score: 218.33171
- Max Citation Score: 256.4886
- Similarity Product: 203.31481166185145

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