PATENT CLAIM ANALYSIS

Application Number: 15749583
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-01
Patent Classification: ["166", "177500"]

Abstract:
The invention discloses a pipeline descaling and rock stratum fracturing device based on electro-hydraulic pulse shock waves, comprising a ground low-voltage control device, a transmission cable and an electro-hydraulic pulse shock wave transmitter. The invention generates available high-strength shock waves with repetition frequency to bombard a specific position of the pipeline or rock stratum so as to achieve the effect of pipeline descaling and rock stratum fracturing; the breakdown field strength of the liquid gap can be effectively reduced to improve the conversion efficiency of the electrical energy to the mechanical energy of the electro-hydraulic pulse shock wave so as to obtain a high-strength electro-hydraulic pulse shock wave; the transmitting cavity adopts a parabolic focusing cavity, and through refraction and reflection of the rotating parabolic cavity, the shock wave is focused in a preset direction and radiates outwards to act on the pipeline dirt or rock stratum while ensuring that the shock wave has no longitudinal component and does not will not damage the liquid within the pipeline and the pipeline sheath, so that the effect of pipeline descaling or rock stratum fracturing is improved after focusing. The invention has the advantages of effectively removing the pipeline dirt, fracturing the rock stratum and improving the permeability as well as high reliability, environmental friendliness and low cost.

Claim (Index 1):
A pipeline descaling and rock stratum fracturing device based on electro-hydraulic pulse shock waves, comprising: a ground low-voltage control device, an electro-hydraulic pulse shock wave transmitter placed in the pipeline or rock hole, and a logging cable for connecting the ground low-voltage control device to the electro-hydraulic pulse shock wave transmitter;\n the electro-hydraulic pulse shock wave transmitter includes: a high voltage converting unit, a high-temperature energy storage unit, a pulse compression unit, an electro-hydraulic pulse shock wave transmitting unit and a protection unit which are coaxially distributed in sequence along the axis; the high voltage converting unit is configured to convert an AC low voltage signal transmitted by the logging cable into a direct current high voltage signal; the high-temperature energy storage unit is configured to temporarily store the direct current high voltage energy output by the high voltage converting unit as the total electric energy for the electro-hydraulic pulse discharge for a long time; the pulse compression unit is configured to control the energy stored in the high-temperature energy storage unit to be instantaneously applied to the electro-hydraulic pulse shock wave transmitting unit; the electro-hydraulic pulse shock wave transmitting unit is configured to generate a strong shock wave in a discharge liquid with weak compressibility by a large pulse current due to breakdown of the electro-hydraulic pulse shock wave discharge gap under the action of a high voltage, and allow the generated shock wave to propagate outwards; the shock wave radiates in a preset focused direction through the focusing cavity, and is transferred into the oil and gas pipeline or the rock hole to touch the pipeline dirt or allow rock crack creation or fracturing; the protection unit is configured to ensure coaxality of the motion in the pipeline so as to avoid collision of the instrument with the pipeline wall.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 88.0
- Lexical Diversity: 2.15094
- Patent Class: 166.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13252085', '13449733', '11959868', '12246599', '12246583']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7918198183840548
- 35 USC 102 Novelty (BERT): 0.4896005962601413
- Combined Prediction Score: 0.7615978961716635
- Mean Citation Score: 228.967284
- Max Citation Score: 259.5923
- Similarity Product: 187.69629342893364

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

Dataset: test