What the data for this category looks like
The data for this category primarily comes from oilfield engineering service specifications released by industry regulatory authorities, internal operating procedures of state-owned and public enterprises, and policy guidance documents. Data updates align with industry policy adjustments and the rollout of new operating standards, with no fixed cycle. Most documents follow formal official document structure, including document numbers, issuing authorities, effective dates, and chaptered clauses. Fields cover operating qualification requirements, safe operating standards, project approval processes, and cost accounting rules. Units are mostly engineering service-related categories such as meters, cubic meters, hours, and qualification levels. Some documents include multi-column tables, such as operating qualification lists and network segment record sheets.
What constraints these characteristics impose on the document parsing and chunking step
Most documents in this category are multi-chapter formal official documents, with strong logical connections between clauses. Chunking must avoid breaking the integrity of clauses, otherwise context will be missing during Q&A. Documents contain multi-column table content; parsing must accurately identify the structure of multi-column tables, otherwise field association information will be lost. Some individual documents have long lengths. Uploading them directly may trigger parsing timeouts, so parsing parameters must be adjusted in advance. Policy documents often include metadata such as document numbers and effective dates. Chunking must retain the binding relationship between metadata and corresponding clauses to avoid association failures during retrieval.
How to set the configuration
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
chunkSize | 800–1200 characters | Oilfield policy documents are mostly clause-based content. This range preserves the integrity of individual clauses or related clause groups, and meets retrieval needs |
chunkSplitter | By paragraph + title anchor | The document structure includes chapter titles and paragraphs. Splitting this way preserves the integrity of logical blocks and avoids splitting cross-chapter content |
customPdfParse | Enabled | Oilfield policy documents are mostly formatted PDFs. Enabling this allows accurate extraction of tables, metadata, and chapter structures, avoiding lost content during parsing |
PARSE_FILE_TIMEOUT_SECONDS | 120–180 seconds | Individual policy documents have long lengths. This duration covers the complete parsing process and avoids mid-process timeout failures |
chunkSettingMode | Manual configuration | Adjust chunking rules separately for features such as multi-column tables and long documents to adapt to the category-specific data structure |
UPLOAD_FILE_MAX_SIZE | 500 MB | Oilfield policy documents are mostly PDF or Excel files under 500 MB per file. This upper limit matches common file sizes |
Three common mistakes
- After uploading an Excel file such as a multi-column network segment record sheet, the knowledge base only recognizes the first two columns of content. Cause: Custom parsing configuration is not enabled. The default parsing rule only extracts the first two columns of fields and does not adapt to multi-column table structures.
- After uploading a long PDF policy document, the parsing task times out and fails. Cause: The
PARSE_FILE_TIMEOUT_SECONDSparameter is not adjusted. The default duration is insufficient to complete full parsing of long documents. - When exporting the knowledge base dataset, the generated file only contains a template-style Q&A pair framework with no actual business content. Cause: The uploaded document is not correctly associated with the knowledge base's Q&A configuration, and the actual business content of the document is not extracted during chunking.
How to confirm the configuration is correct
- Upload a single oilfield policy document, and view the parsed text in the FastGPT v4.17.0 backend to confirm that complete chapters and all table column content are retained.
- View the parsing task log information to confirm that no timeout error is triggered, and that the set
PARSE_FILE_TIMEOUT_SECONDSduration is matched. - Export the knowledge base dataset file, and check that the chunked content includes corresponding policy clauses and metadata such as document numbers, with no missing fields.
- Test retrieval of a specific operating qualification clause, and confirm that the returned chunked content includes complete associated context with no clause splitting.
The values given are common starting points and should be measured against the reader's own samples.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-28.