PATENT CLAIM ANALYSIS

Application Number: 15764542
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-12
Patent Classification: ["166", "380000"]

Abstract:
A packer box for use in petroleum drilling is described, in which a rotatable packer element arranged centrically in a packer retainer that is orientable and lockable in a sealing position in a housing in the packer box is arranged to seal against a passing drill string, the packer element comprising a mounting device provided with packer slide rings at the ends of the mounting device and being in sealing abutment against slide rings arranged internally in the packer retainer, and an internal, flexible packer sleeve which is arranged to abut sealingly against the drill string with an external pressure from a fluid in a volume-compensated annular space in the packer retainer, wherein the mounting device includes several channels perforating the mounting device, and clamping devices for fixing the packer sleeve to the end portions of the mounting device. A method of installing or withdrawing a packer element in, respectively from, a packer box is described as well.

Claim (Index 11):
A method for installing or withdrawing a packer element in, respectively from, a packer box for use in petroleum drilling, characterized in that the method comprises the features of either:\n 1a) sliding a packer retainer according to  claim 1  onto a drill pipe; 1b) letting a gripping device grip loosely around the drill pipe by at least one hydraulically actuated, spring-loaded locking bolt arranged on the packer retainer being brought into abutment against a shoulder on a tool joint of the drill pipe; 1c) connecting the drill pile to a drill string; 1d) by means of the drill string, inserting the packer retainer into a housing; 1e) locking the packer retainer to the housing; and 1f) releasing the drill string from the packer retainer by pulling the at least one locking bolt away from the shoulder of the tool joint; or 2a) sliding the packer retainer onto a drill pipe; 2b) letting a tool grip an upper entry cone according to  claim 6 ; 2c) connecting the drill pipe to a drill string; 2d) by means of the tool, inserting the packer retainer into a housing; 2e) locking the packer retainer to the housing; 2f) releasing the tool from the packer retainer; and when pulling the packer element out of the housing, reversing either steps 1a-1f or steps 2a-2f.

Metadata:
- Claim Count in Document: 4.0
- Percentile: 90.0
- Lexical Diversity: 2.21053
- Patent Class: 166.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['12347443', '13991857', '15297141', '13041079', '15575492']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.789738365642651
- 35 USC 102 Novelty (BERT): 0.4796916060985304
- Combined Prediction Score: 0.758733689688239
- Mean Citation Score: 229.17057000000003
- Max Citation Score: 239.10081
- Similarity Product: 202.8071367774028

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