43 CFR § 3264.13 - What drilling and operational records must I maintain for each well?

---
identifier: "/us/cfr/t43/s3264.13"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "43 CFR § 3264.13 - What drilling and operational records must I maintain for each well?"
title_number: 43
title_name: "Public Lands: Interior"
section_number: "3264.13"
section_name: "What drilling and operational records must I maintain for each well?"
chapter_name: "BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR"
subchapter_number: "C"
subchapter_name: "MINERALS MANAGEMENT (3000)"
part_number: "3200"
part_name: "GEOTHERMAL RESOURCE LEASING"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "30 U.S.C. 1001-1028; 43 U.S.C. 1701  and Pub. L. 109-58."
regulatory_source: "72 FR 24400, May 2, 2007, unless otherwise noted."
cfr_part: "3200"
---


# 3264.13 What drilling and operational records must I maintain for each well?

You must keep the following information for each well, and make it available for BLM to inspect, upon request:

(a) A complete and accurate drilling log, in chronological order;

(b) All other logs;

(c) Water or steam analyses;

(d) Hydrologic or heat flow tests;

(e) Directional surveys;

(f) A complete log of all subsequent well operations, such as cementing, perforating, acidizing, and well cleanouts; and

(g) Any other information regarding the well that could affect its status.