API 43 : 1991

RECOMMENDED PRACTICE FOR EVALUATION OF WELL PERFORATORS

American Petroleum Institute

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Foreword
Special Notes
SECTION G - GENERAL
G.1 Overall
G.2 Scope
G.3 Objective
G.4 Certification
G.5 Verification
G.6 Mandatory Retest
G.7 Annual Recertification
G.8 Availability of Certification Data Sheets
G.9 Maintenance of Current File
G.10 Reports and Advertisements
G.11 Compliance Requirements
G.12 Implementation
SECTION 1 - EVALUATION OF PERFORATING SYSTEMS UNDER
SURFACE CONDITIONS, CONCRETE TARGETS
1.1 Introduction
1.2 Test Target
      Figure 1.1: Example Concrete Target
1.3 Perforating System Selection
1.4 Charge Selection and Aging
1.5 Multi-directional Firing Perforator Systems
1.6 Uni-directional Perforator Systems
1.7 Test Fluid
1.8 Test Results Validity
1.9 Data Collection
1.10 Data Recording and Reporting
      API Form 43F: Certification Data Sheet
      Perforating System Evaluation, RP 43,
      Sections 1 and 2
SECTION 2 - EVALUATION OF PERFORATORS UNDER STRESS
CONDITIONS, BEREA TARGETS
2.1 Introduction
2.2 Berea Sandstone Target
2.3 Preparation of Berea Sandstone for the Target
2.4 Test Apparatus
      Figure 2.1: Section 2 Target Configuration
      Figure 2.2: Shooting End Fixture
      Figure 2.3: Vent End and Seal Fixture
2.5 Test Conditions and Procedure
SECTION 3 - EVALUATION OF PERFORATOR SYSTEMS AT
ELEVATED TEMPERATURE CONDITIONS, STEEL TARGETS
3.1 Introduction
3.2 Reference Data
3.3 Test Target
3.4 Perforating System Selection
3.5 Charge Selection and Aging
3.6 Gun Configuration
3.7 Clearance
3.8 Number of Shots
3.9 Temperature Environment
3.10 Test Fluid Environment
3.11 Temperature Monitoring
3.12 Test Assembly
3.13 Data Collection and Recording
      Figure 3.1: Schematic Illustration of Steel
      Target for Elevated Temperature Test
3.14 Pressure Testing of the Gun System
      Form 43G: Verification Data Sheet, Elevated
      Temperature Perforating System Evaluation, RP 43,
      Section 3
SECTION 4 - EVALUATION OF PERFORATION FLOW PERFORMANCE
UNDER SIMULATED DOWNHOLE CONDITIONS
4.1 Introduction
4.2 Test Target
4.3 Testing Equipment
4.4 Charge Selection and Aging
4.5 Gun Configuration
4.6 Systems Calibration
4.7 Permeability Measurement
4.8 Testing Procedure
4.9 Data Recording
4.10 Data Reduction
4.11 Standard Test Conditions
APPENDIX 4A - TEST TARGET AND EQUIPMENT
4A.1 Introduction
4A.2 Radial Flow
       Figure 4.1: Typical Radial Flow Geometry
4A.3 Axial Flow
       Figure 4.2: Typical Axial-Flow Geometry
       Figure 4.3: Schematic of Typical Testing
                    Equipment
APPENDIX 4B - PERMEABILITY MEASUREMENT
4B.1 Axial Flow
4B.2 Flow Across the Core Diameter
4B.3 Variable Permeability
       Figure 4.4: Typical Axial Flow Permeability
                    Equipment
       Figure 4.5: Typical Diametral Flow Permeameter
APPENDIX 4C - DATA REDUCTION; EXPECTED FLOW RATES
4C.1 Introduction
4C.2 Radial Flow Target
4C.3 Axial Flow
       Form 43H: Verification Data Sheet, Evaluation
                  of Perforation Flow Performance,
                  RP 43, Section 4

Abstract

Describes test procedures for evaluation of perforators under surface conditions and physical and flow characteristics of perforations under temperature and pressure. Certification Data Sheet. Covers bullet and jet perforators under multiple-shot, atmospheric shooting conditions.