PATENT CLAIM ANALYSIS

Application Number: 15953043
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-11
Patent Classification: ["175", "027000"]

Abstract:
A method and system for automatically controlling drilling weight-on-bit for using a drill-string to drill along a wellbore is described.

Claim (Index 20):
The system of  claim 17 , wherein in step iii) the friction coefficient-depth distribution is obtained by\n iii-1A) calculating the tension at the bottom of the drill-string using the following Equations:\n F T k =F k\u22121 T +w k  cos(\u03b8 k )+\u03bc k F N k  \n F N k =\u221a{square root over (( F k\u22121 T \u03b4\u03b1 sin \u03b8 k )\u03022+( F k\u22121 T \u03b4\u03b8+w k  sin \u03b8 k )\u03022)}\u2003\u2003(1) \n \n wherein F T k  is the tension at the top of the kth string component, and F N k  is the normal force, w k  is the buoyant weight, \u03b8 k  is inclination, \u03bc k  is the effective friction coefficient of the k th  drill-string component, \u03b4\u03b1 and \u03b4\u03b8 are the difference in azimuth and inclination between the k th  and k\u22121 th  drill-string components; iii-1B) calculating the tension at the bottom of the lower drill-string component using the bottom tension of the top upper drill-string component as the top tension of the lower string component, until obtaining the tension at the top of the deepest drill-string component F T 1 ; iii-1C) calculating \u03bc k  by using F T 1  in Equation (1) and assuming the drill bit is off bottom; iii-1D) attributing the drill-string friction coefficient to the wellbore of the corresponding depth; and iii-1E) repeating steps iii-1A) to iii-1D) when a new drill-string component is added.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 91.0
- Lexical Diversity: 1.10526
- Patent Class: 175.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['14375405', '14043564', '11357332', '13386859', '13386862']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7459414069177218
- 35 USC 102 Novelty (BERT): 0.5226156226031581
- Combined Prediction Score: 0.7236088284862654
- Mean Citation Score: 290.14812199999994
- Max Citation Score: 378.838
- Similarity Product: 287.48983388757705

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