PATENT CLAIM ANALYSIS

Application Number: 15870714
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["166", "250140"]

Abstract:
Methods of formulating a cement slurry for use in a subterranean salt formation, including methods for formulating a cement slurry capable of providing long-term zonal isolation within a subterranean salt formation. The methods also take into account the effects of treatment fluids on the cement slurry, such as drilling fluids, spacer fluids, flush fluids, or other relevant fluids used to perform a subterranean formation operation.

Claim (Index 1):
A method comprising:\n (a) calculating a theoretical first wellbore radius for a wellbore in a subterranean salt formation having a treatment fluid therein based on salt creep analysis in the presence of formation-treatment fluid; (b) calculating a theoretical second wellbore radius in the subterranean salt formation during a cementing operation with a proposed cement slurry based on salt creep analysis in the presence of formation-cement slurry; (c) calculating a theoretical final wellbore radius in the subterranean salt formation based on the theoretical first wellbore radius, the theoretical second wellbore radius, and salt dissolution expected after a proposed cement sheath is theoretically formed; (d) calculating theoretically whether the proposed cement sheath is capable of withstanding a wellbore load by calculating theoretical thermal and thermo-mechanical properties of the proposed cement slurry based on salt creep analysis in the presence of formation-cement sheath; (e) determining experimentally whether the proposed cement sheath is capable of withstanding the wellbore load based on actual thermal and thermo-mechanical properties of the proposed cement slurry after salt dissolution; (f) calculating theoretically a theoretical pump time and a theoretical pump pressure for the treatment fluid and the proposed cement slurry; (g) determining experimentally whether the theoretical pumping time for the treatment fluid and the proposed cement slurry will permit formation of the proposed cement sheath in the wellbore without substantial premature curing; (h) establishing a final cement slurry, a final pumping pressure and time for the treatment fluid, and a final pumping pressure and time for the final cement slurry; (i) performing a wellbore operation with the treatment fluid using the final pumping time and pressure for the treatment fluid; and (j) performing the cementing operation with the final cement slurry using the final pumping time and pressure for the final cement slurry.

Metadata:
- Claim Count in Document: 45.0
- Percentile: 86.0
- Lexical Diversity: 1.63636
- Patent Class: 166.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15300098', '15809967', '14360850', '15744567', '14434702']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8018265233534964
- 35 USC 102 Novelty (BERT): 0.5203460621132333
- Combined Prediction Score: 0.77367847722947
- Mean Citation Score: 280.81704
- Max Citation Score: 369.26218
- Similarity Product: 289.154293863821

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

Dataset: test