PATENT CLAIM ANALYSIS

Application Number: 16307554
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-05
Patent Classification: ["166", "308100"]

Abstract:
The present invention relates to a fracturing method for providing fractures in a formation downhole for optimising hydro-carbon production, such as gas or shale gas production, in a well having a well tubular metal structure comprising several self-closing flow assemblies, each self-closing flow assembly comprising a sleeve which is movable along a longitudinal axis of the well tubular metal structure for opening or closing a port in the well tubular metal structure. The method comprises providing fracturing fluid derived from in situ hydro-carbons; submerging an activation device into the well tubular metal structure; pressurising the well tubular metal structure by means of the fracturing fluid derived from in situ hydro-carbons for moving the activation device towards a first self-closing flow assembly; engaging the sleeve of the first self-closing flow assembly by means of the activation device; further pressurising the well tubular metal structure by means of the fracturing fluid derived from in situ hydro-carbons for moving the sleeve of the first self-closing flow assembly and thereby opening the port; injecting the fracturing fluid derived from in situ hydr-carbons through the port of the first self-closing flow assembly for providing fractures in the formation; decreasing a pressure of the fracturing fluid by 0.5-20% for releasing the activation device from the first self-closing flow assembly, thereby closing the port; and moving the activation device by means of pressurised fracturing fluid for engaging a second self-closing flow assembly.

Claim (Index 11):
A fracturing method according to  claim 1 , wherein the well tubular metal structure is provided with a plurality of annular barriers, each annular barrier comprising:\n a tubular metal part for mounting as part of the well tubular metal structure, the tubular metal part having a first expansion opening and an outer face, an expandable metal sleeve surrounding the well tubular metal part and having an inner face facing the tubular metal part and an outer face facing a wall of a borehole of the well, each end of the expandable metal sleeve being connected with the tubular metal part, and an annular space between the inner face of the expandable metal sleeve and the tubular metal part, the expandable metal sleeve being configured to expand by injecting pressurised fluid into the annular space through the first expansion opening.

Metadata:
- Claim Count in Document: 29.0
- Percentile: 98.0
- Lexical Diversity: 3.1125
- Patent Class: 166.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15321382', '15588981', '13878639', '15415222', '13807857']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8018815464549048
- 35 USC 102 Novelty (BERT): 0.4885929134331599
- Combined Prediction Score: 0.7705526831527304
- Mean Citation Score: 265.79761
- Max Citation Score: 284.9794
- Similarity Product: 239.6487077740908

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