Calculation Method of Inhomogeneous Damage Depth in Sandstone Reservoir
A calculation method, non-uniform technology, applied in earthwork drilling, measurement, borehole/well components, etc.
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[0075] The present invention will be further described below by way of examples.
[0076] Evaluation of the damage depth and oil and gas layer protection effect of the 5726.00-5746.00m well section of Well DH1.
[0077] Well DH1 is a prospecting well. The 5726.00-5746.00m section of the well was completed and tested, and the casing was set. The test horizon is Carboniferous.
[0078] (1) Input data
[0079] 1) Well parameters
[0080] well name
Well DH1
Well section
5726.00-5746.00m
Well type
perforated well
Wellbore Radius
0.076
Two-phase zone outer radius
0.076
total skin factor
12.64
Ratio of single-phase to two-phase permeability
1
[0081] 2) Boundary parameters
[0082] boundary type
Borderless
[0083] 3) Formation parameters
[0084] Formation properties
anisotropy
Porosity
0.15
geometry factor
31.62
Formation thickness (m)
20
...
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