API RP 19B:2006 pdf download

API RP 19B:2006 pdf download.Recommended Practices for Evaluation of Well Perforators.
1.10 DATA RECORDING AND REPORTING
Data shall be reported on all shots tired or attempted. Data shall be reported in the same order that it was shot ballistically, with #1 being the first charge shot. See Figure 2 for an example data sheet. Any data sheet used must include a similarly positioned watermark indIcating that the test is not registered with the API. Comments regarding other gun system configurations should not be included
1.11 SPECIAL API RP 19B SECTION I TESTS
environments may require that special tests be conducted to better simulate down hole conditions. Some conditions require special casing. In some cases even dual string casing. is placed over a producible tone. In other situations gas environments may require the use of special gun systems. Operators must be able to evaluate perforating systems under these conditions with special tests.
This section provides a means to shoot and publish a witnessed test in a Special API RP l9B Section I Target. with any or all of the following exceptions.
I. Special casing may be used.
2. Dual string casing may he used.
3. The gun may be shot with air instead of water in the gun to casing annulus.
All other API RP l9B Section I requirements must he met. All exceptions must be listed in the remarks section of the appropriate data sheet (see Figure 2 or 3)
Casing annulus material should be RP 1911 cement unless otherwise specified by the customer.
Single string tests must he reported on the Special Test Ibm’i provided by API. See Figure 2.
Dual string test must be reported on the Special Dual String Test fomi also provided by API. See Figure 3.
2 Evaluation of Perforators Under Stress Conditions, Berea Targets
2.1 INTRODUCTION
This section is intended to provide a test procedure to be followed for measuring perforator performance in stressed Berca sandstone with wdlhorc pressure applied.
2.2 BEREA SANDSTONE TARGET
Tests will be conducted using Berea sandstone targets mounted as shown in Figure 4. Bcrea sandstone target material shall have a bulk porosity of not less than 19% nor more than 21%.
2.3 PREPARATION OF BEREA SANDSTONE FOR THE TARGET
2.3.1 Size
For charges IS grams or less, a 4-inch (±3%) diameter core will be cut from a large block of Berea sandstone. For charges exceeding IS grams, a 7-inch (±3%) diameter core will be cut from a large block of Berea sandstone. Depending on the expected perforation depth, the total length of the core shall approximate 12, 15. l, 21, 24. or 27 inches, measured to within ±0.25-inch. The test will he considered valid if at least 3 inches of unpenetrated core remains.
2.3.2 Cutting
The core may be lathe turned or cut with a core barrel.