What the data for this category looks like
Policy and regulatory basis documents for the oil and gas exploration and development field mainly come from natural resources authorities, industry regulators, and internal compliance departments of enterprises. Document formats include two types: editable PDFs and scanned files. Documents contain fields such as policy document numbers, effective dates, applicable operational phases, and compliance thresholds. Update frequency follows adjustments to national energy policies or revisions to industry standards. Single-document length varies significantly. Some archived compliance manuals can reach hundreds of pages. Most content is formulated around core exploration and development links including drilling, fracturing, environmental protection, and safety.
What constraints do these characteristics impose on document parsing and chunking
The format and structural features of oil and gas exploration policy documents impose multiple constraints on the document parsing and chunking process. Multi-source documents include scanned files and editable PDFs. Both native text parsing and OCR transcription workflows must be supported to avoid missing key content in scanned documents. Single-document length spans a wide range; some compliance manuals are lengthy. When chunking, context binding between policy clauses, associated document numbers, and effective dates must be preserved. This prevents splitting critical compliance requirements and causing retrieval failures. Dense professional terms and operational units require retaining semantic integrity during chunking. This avoids splitting professional expressions and reducing retrieval accuracy.
How to set the configuration
Reference only; verify against the target FastGPT release and deployment documentation.
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
chunkSize | 800–1200 characters | Oil and gas exploration policy documents contain dense professional terms and long clauses. This range balances semantic integrity and retrieval precision |
chunkSplitter | Split by chapter headings | Policy documents mostly follow standard chapter structures. Splitting by chapters preserves binding between clauses and associated metadata |
customPdfParse | Enabled | A large number of policy documents exist in scanned format. Enabling this triggers the OCR transcription workflow to fully extract scanned content |
PARSE_FILE_TIMEOUT_SECONDS | 600 seconds | Parsing long single documents takes significant time. This duration covers parsing and transcription workflows for hundreds of pages of compliance manuals |
UPLOAD_FILE_MAX_SIZE | 1000 MB | Some archived policy documents have large combined volumes. This upper limit meets batch upload requirements |
chunkSettingMode | Manual configuration | Format differences between batches of policy documents are significant. Manual configuration allows flexible adjustment of chunking rules to fit the scenario |
Three common errors
- Phenomenon: After uploading a scanned policy document, the parsing result is empty or only contains garbled text. Cause: The
customPdfParseconfiguration is not enabled, so the OCR transcription workflow is not triggered, and text content from the scanned document cannot be extracted. - Phenomenon: A timeout error is returned when calling the custom PDF parsing service. Cause: The
PARSE_FILE_TIMEOUT_SECONDSparameter is not adjusted. The default duration is insufficient for parsing and transcribing long documents. - Phenomenon: When retrieving policy clauses, the corresponding document number and effective date cannot be associated. Cause: The
chunkSplitteris configured to split by fixed character count, which breaks the binding between clauses and associated metadata, leading to incomplete semantic retrieval results.
How to confirm the configuration is correct
- Upload a scanned policy document, check if the parsed text contains complete clause content to confirm the OCR transcription workflow is active.
- Upload a compliance manual longer than 200 pages, check if the parsing task duration does not exceed the value set in
PARSE_FILE_TIMEOUT_SECONDS. - Randomly select a policy clause, check if the returned chunked content includes the corresponding document number and effective date after retrieval, to confirm that semantic associations are preserved during chunking.
- Check the
chunkSizeparameter in the knowledge base upload configuration, confirm that its value falls within the preset range of 800–1200 characters.
The values provided 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.