API RP 19D is the 2nd edition of Measuring Conductivity of Proppants, a practical API Recommended Practice for evaluating one of the key properties used in hydraulic fracturing and related completion work. This document helps teams understand how proppant conductivity is measured and why that measurement matters when comparing materials for field use, technical review, and procurement decisions. For buyers, API RP 19D provides a focused reference for consistent testing and interpretation, supporting more reliable selection, quality control, and engineering alignment in oil and gas work.

Purpose of API RP 19D

The purpose of API RP 19D is to provide practical guidance for measuring proppant conductivity in a consistent and technically recognized way. As a recommended practice, it serves as an application-oriented reference rather than a prescriptive requirement document. It is typically used to support evaluation of proppant performance, comparison of test results, and communication between suppliers, engineers, and operational teams. API RP 19D is especially relevant where conductivity data influences completion planning, material qualification, or technical review of proppant-related decisions.

How is API RP 19D used in practice?

API RP 19D is commonly used by completion engineers, laboratory personnel, technical managers, and procurement or quality teams involved in proppant selection and qualification. In practice, it supports conductivity testing workflows, review of supplier data, and internal consistency in how results are generated and compared. The document is most useful where hydraulic fracturing programs depend on reliable proppant performance data to inform material choice and operating decisions. It can also assist QA/QC and technical documentation teams that need a shared reference for evaluation and reporting.

Why teams use API RP 19D

Teams use API RP 19D because it helps reduce uncertainty when assessing proppant conductivity and comparing results from different sources. That makes it valuable for engineering reference, procurement review, and quality-focused technical work. By giving organizations a common practice for measurement, it supports clearer communication across laboratory, operations, and project teams. It may also help improve consistency in vendor evaluation and internal decision-making, especially when conductivity data is part of a broader completion or reliability strategy.

• Measuring conductivity of proppants
• Completion and fracture treatment support
• Engineering and laboratory reference
• Procurement and supplier data review
• QA/QC and technical consistency
• Oil and gas field application