PATENT CLAIM ANALYSIS

Application Number: 16309934
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-05
Patent Classification: ["417", "042000"]

Abstract:
The present invention discloses a method and a system pertaining to the field of oil production engineering. According to the method, the crank complete-cycle operation uses a utility frequency driving mode, and the crank incomplete-cycle pumping operation and the crank incomplete-cycle no-pumping, operation use a variable, frequency driving mode. The system is provided with a utility frequency loop and a variable frequency loop which are provided with a common input terminal and a common output terminal. The common input terminal of the utility frequency loop and the variable frequency loop is connected to a utility frequency power supply circuit, and the output terminal is connected to a driving electric machine of the oil pumping unit. A frequency changer is configured in the variable frequency loop. An operation control unit is further configured outside the utility frequency loop and the variable frequency loop.

Claim (Index 2):
The electric machine driving method under the non-conventional work mode of the oil pumping unit according to  claim 1 , wherein\n a method of switching from the variable frequency driving mode to the utility frequency driving mode comprises: driving the oil pumping unit, by the variable frequency driving mode, to perform the crank incomplete-cycle pumping operation and the crank incomplete-cycle no-pumping operation; adjusting and controlling mechanical energy accumulated by a mechanical system of the oil pumping unit by means of adjusting a swing amplitude during the crank incomplete-cycle pumping operation and the crank incomplete-cycle no-pumping operation, so that a peak rotating speed of an electric machine in a bidirectional motion is constantly adjusted; and switching from the variable frequency driving mode to the utility frequency driving mode when a rotating speed of the electric machine in the same direction as the utility frequency driving mode falls within a neighborhood containing a rated rotating speed under the utility frequency driving mode of the electric machine; and a method of switching from the utility frequency driving mode to the variable frequency driving mode comprises: turning off the utility frequency driving mode to make the oil pumping unit enter a free-running operation state; and switching to the variable frequency driving mode, when the rotating speed of the electric machine falling within a neighborhood containing a predetermined rotating speed of the electric machine.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 98.0
- Lexical Diversity: 2.68421
- Patent Class: 417.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['16301739', '10286180', '12911684', '13451041', '12873510']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7569975700385977
- 35 USC 102 Novelty (BERT): 0.4882088816421669
- Combined Prediction Score: 0.7301187011989546
- Mean Citation Score: 162.895244
- Max Citation Score: 196.03708
- Similarity Product: 145.08381136299852

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