PATENT CLAIM ANALYSIS

Application Number: 16008572
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-12
Patent Classification: ["175", "066000"]

Abstract:
A filter screen assembly is shown for filtering drilling mud used during oil and gas well drilling operations. The filter screen assembly is installed at the surface of a well on the discharge side of the mud pump at ground level. The filter screen assembly is installed upstream of the rig swivel, rotary hose and Kelly and downstream of the discharge from the mud pump. Since it is located at ground level, it does not pose the safely hazard associated with elevated components. It does not need to be removed and reinstalled when additional segments are added to the drill string and is always easily accessible for routine maintenance or replacement.

Claim (Index 2):
A method for filtering drill bit cuttings and other abrasive debris and contaminants from a drilling mud that is circulated from a surface mud tank through an oil or gas well drilling system located on a well drilling rig having a rig floor and a rig derrick, the method comprising the steps of:\n providing a drill string; providing a drilling system supported by the well derrick that rotatably drives the drill string for drilling a well bore, the drill string having a drilling mud fluid passageway; providing an interconnecting conduit downstream of the mud circulating pump for communicating with the drilling mud fluid passage in the drill string; wherein the drilling system includes a stand pipe that is located in the interconnecting conduit between a discharge outlet of the mud pump and the remainder of the drilling system on the derrick, the stand pipe being positioned in a generally upright position; providing a mud filter screen assembly for filtering the drilling mud, the mud filter screen assembly being positioned in the interconnecting conduit adjacent the discharge outlet of the mud pump at ground level and prior to the stand pipe; the mud filter screen assembly comprising a porous structure made of metal having a plurality of openings formed along a length thereof which allows a flow of drilling mud through the filter screen section while trapping drill bit cuttings and other abrasive debris; wherein the mud filter screen assembly includes a filter screen section having a longitudinal axis, the filter screen section being mounted within an outer tubular member, whereby an annular passageway exists between the filter screen section and the outer tubular member, the filter screen assembly having a filter inlet for receiving mud flow from the discharge outlet of the mud pump and a filter outlet, and wherein drilling mud enters the filter inlet in an in-line direction and continues axially through the mud filter screen assembly and through the annular passageway, parallel to the longitudinal axis of the filter screen section and to the outer tubular member, the flow continuing to the filter outlet where it passes through the interconnecting conduit and from there through the drilling mud fluid passageway of the drilling system; and wherein the mud filter screen assembly has an inlet piece provided with at least one by-pass outlet which allows the flow of mud to continue outside the filter screen section in the annular passageway between the filter screen section and the outer tubular member and thereafter along the longitudinal axis of the outer tubular member to the filter outlet in the event the filter screen section itself should become clogged or inoperative.

Metadata:
- Claim Count in Document: 23.0
- Percentile: 94.0
- Lexical Diversity: 1.63889
- Patent Class: 175.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14429309', '13085039', '14127140', '12160999', '15093417']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7109809354524232
- 35 USC 102 Novelty (BERT): 0.4794308907307926
- Combined Prediction Score: 0.6878259309802602
- Mean Citation Score: 253.64746
- Max Citation Score: 266.34195
- Similarity Product: 212.68025466597675

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