CLF Training Portal › Oil & Gas Title
Oklahoma Drilling Title Opinion
Examination Process
Audience: Law Students
Oklahoma O&G
Original DTO
Living Document
A Drilling Title Opinion (DTO) is a formal legal opinion rendered by an oil and gas attorney confirming the ownership of mineral interests, leasehold rights, and associated encumbrances in a defined tract of land before a well is drilled. This page provides a comprehensive, step-by-step breakdown of the process for conducting a title examination and drafting a DTO in Oklahoma, from initial setup through finalization and delivery.
How to Use This Page
▼ Expandable panels cover Oklahoma-specific legal concepts in depth without cluttering the main workflow
↗ Live links to OCC, county records, and research databases open in a new tab
⊛ Firm tool references indicate CLF-specific forms and spreadsheets in the shared OK Opinion Forms folder
■ Color chips reflect the runsheet color-coding system used throughout the examination
Concept Summary
Before examining any instrument, an attorney must establish the operational context of the proposed well: what unit is being examined, what formations are targeted, what the production and regulatory history looks like, and how the file should be organized. Setup errors compound throughout the examination, so this stage deserves careful attention. The goal is to know your land before you begin chaining it.
File & Folder Organization
Set up a digital folder using firm standard forms. Standard forms are located in the shared OK Opinion Forms folder. Input any special client instructions into the title chain notes at this stage.
If the client has provided specific instructions by email or furnished unrecorded documents to be applied in the opinion, save copies in the file now. These materials must be listed in the Cover Sheet's Materials Examined section.
Confirm target formation and depth. Determine whether the opinion can be depth-limited or whether the client requires all formations. This affects how leases, pugh clauses, and depth clause analysis are handled throughout the examination.
Identify unit type and well type. Determine whether this is a standard 640-acre section unit, a multi-unit horizontal (typically 1,320 acres), or an 80-acre unit. Note whether the proposed well is horizontal or vertical. This affects spacing order research and the scope of your OCC inquiry.
Ownership Report Review
Briefly review the Ownership Report to orient yourself to the tract layout, approximate ownership, and any obvious issues. This is not yet a detailed cross-check; save that for after you have completed your independent research.
OCC & Production Research
Determine spacing, pooling, unitization, and production status using
Pangaea and the OCC website. Pangaea is the primary research tool for this purpose.
Pangaea access requires firm credentials. See the managing attorney for login information.
Always search for Unitizations (including waterflood units) in Pangaea's Apps & Orders search. These are easily missed and can significantly affect HBP status.
Use the OCC website for well records, well browse, and orders.
Save copies of all spacing orders, multi-unit orders, unitizations, and all possibly effective pooling orders to the OCC docs folder in the well file. Tabulate relevant spacing, unitization, pooling, and multi-section orders in
Exhibit B. Tabulate a snapshot of wells and HBP status in the
Well HBP Status spreadsheet.
For multi-unit horizontal wells, check surrounding sections. The OCC does not always file orders in every affected section, so pertinent orders may not appear in your section's index.
Runsheet Color-Code System
Apply the following color-coding system to the runsheet consistently throughout the examination. Consistent color-coding significantly speeds up peer review and tabulation.
Easements / ROWs / Gas Gathering
Leases & Lease Assignments
Fee Conveyances (non-leasehold)
If an instrument is labeled "Assignment" but may convey fee title, color it yellow and investigate before treating it as leasehold.
Runsheet Timeline Markers
Mark the following reference points on the runsheet before you begin chaining:
- Approximately 40 years back -- starting point for mortgage review (accounts for 30-year recording SOL plus 10-year maturity SOL)
- 10-year mark -- outer boundary for marital status and final decree checks
- 5-year mark -- outer boundary for entity authority and execution defect checks
Concept Summary
Encumbrances are instruments of record that burden the mineral or surface estate without conveying fee title: easements, rights-of-way, mortgages, operating agreements, liens, and similar. The purpose of this step is to identify all such instruments, determine which remain legally effective, and tabulate them in the Body so the client understands what must be subordinated, released, or addressed before drilling. This step can be performed either immediately after Step 1 or after Step 4, depending on the workflow preferred for a given matter.
Easements & Rights-of-Way
Tabulate all valid easements, rights-of-way, gas processing and gathering agreements, and similar non-mortgage encumbrances. Color these
green on the runsheet.
Watch for fee language. Some instruments labeled "easement" or "right-of-way" actually convey fee title to the described strip. Carefully examine the words of grant in Highway Deeds, ROW Deeds for highway purposes, and Railroad ROW deeds. If the instrument's granting language is ambiguous, consult the managing attorney before making a determination.
Mortgages
Tabulate unreleased and unsubordinated mortgages that encumber mineral interests. Color these
orange on the runsheet. Use the
Encumbrances Spreadsheet to track and organize.
Statute of limitations lookback. Begin reviewing mortgages approximately 40 years back. This accounts for the 30-year recording statute of limitations (when no maturity date is shown) plus the 10-year maturity date statute of limitations (now technically 7 years as of 11/1/01, but use 10 years because the reduction cannot be applied retroactively).
Federal program mortgages (FHA, Federal Land Bank, etc.) have no statute of limitations. Scan all mortgages regardless of age for federal agency involvement. An unreleased and unsubordinated federal mortgage must be tabulated no matter how old.
For all unreleased and unsubordinated mortgages within the lookback period, track and note: (a) whether it encumbers the surface only or the lessee only (no subordination required for these; note in an examiner's note and comment); (b) what tract it covers; and (c) whether any partial releases have been recorded.
Do not tabulate mortgages covering interests in expired oil and gas leases. Do not tabulate unreleased mortgages on an easement owner's easement interest; simply note it in the easement's tabulation. UCC Financing Statements expire after 5 years. If one within the last 5 years relates to a tabulated mortgage, note it in that mortgage's tabulation rather than treating it as a separate mortgage.
Expired Leases (Multi-Section)
With no production in your unit, expired leases covering only your unit do not need to be reviewed or tabulated. However, expired leases covering outside lands (multi-section leases) must be reviewed and tabulated if unreleased, even if they contain a pugh clause. The reason: lease amendments affecting those other lands that remove or modify the pugh clause may not be filed against your section.
Additional Encumbrances
Pending suits, judgments, and liens. Tabulate any that remain valid and unreleased. Note in the title chain and include an Objection and Requirement calling for full case files.
Operating agreements and gas gathering agreements. Tabulate in an objection if still valid and effective. If only a Memorandum is of record, use the boilerplate objection in the OK Body form.
Townsite or subdivision instruments. Tabulate all restrictive covenants, annexations, dedications, subdivision surveys, and similar instruments in Additional Encumbrances and include in Objections and Requirements.
MTA & SLTA Pre-Check
Before writing any Objections and Requirements, check each potential objection against the Oklahoma Marketable Record Title Act (MTA) and the Simplification of Land Titles Act (SLTA) to confirm whether the defect has already been statutorily cured.
Concept Summary
Fee chaining traces the ownership of the mineral estate from its original government or tribal allotment patent through every conveyance to the present. The goal is to identify who currently owns each fraction of the mineral interest in each tract within the unit, creating the foundational ownership record that will populate the Calculations spreadsheet and ultimately the Numbers spreadsheet. Accuracy here is essential because every downstream step depends on this analysis.
Title Chain Spreadsheet Setup & Conventions
Chain all mineral conveyances from the beginning in the Title Chain Spreadsheet. Begin with original patents.
Use letters for tracts, not numbers, until the end of the examination. Tract letters become numbered tracts only when you know which tracts survive into the final opinion. Input names exactly as they will appear in the final DTO. Do not use periods in LLC, LP, or similar entity names.
Never use cell references (e.g., =B14*1/4). Always input a formula with explicit fractions (e.g., =-1/4*1/32). This keeps the chain readable and auditable.
Keep life estate and remainder interests in the same cell. Track term interests and reversionary rights. Track executive rights if split from mineral rights, bonus rights, or delay rental rights.
Highlight documents on the runsheet as you chain them, applying the color-code system. Put the image number next to each document on the runsheet for future reference.
Tab Creation Rules
Only create a leasehold tab for basic leases that get assigned. Create one leasehold tab per leasehold owner (e.g., Leases 1-10 can share one tab if a single entity owns all and assigns interest in all of them).
Create a new ORRI tab for each overriding royalty interest. In the upper left, note what the ORRI covers, which lease it burdens, and how much of the lease is covered.
Create a new NPRI tab for each non-participating royalty interest. Unlike leasehold and ORRI tabs, NPRI tabs do not necessarily need to equal 1. Leasehold and ORRI represent ownership interests in the lease as a whole; NPRI is calculated differently.
Cross-Checks
Create a mineral tract plat as you chain fee conveyances. This plat becomes Exhibit C in the final opinion.
Take real-time notes on potential Objections and Requirements in the Notes tab or in a working Word document organized by lands with document and tab references. Color problem cells red to flag for later write-up.
After completing the fee chain, review the Ownership Report to see if it matches your findings. Confirm that surface owners match the tax rolls.
Concept Summary
After mapping the mineral estate in Step 3, this step identifies which oil and gas leases are currently in effect (either within their primary terms or held by production), tabulates them in Exhibit A, enters them into the Basic Leases spreadsheet, credits them against the appropriate mineral owners in the title chain, and follows every subsequent assignment through to the current working interest owners. This step also covers pooling order elections, which significantly affect how interests are calculated in the Numbers spreadsheet.
Identifying & Processing Current Leases
If there is no production, identify current leases by comparing effective dates and primary term lengths to the current date. If the unit has production, you must also determine which leases were extended into their secondary term by cross-referencing Pangaea and OCC well data against each lease's terms.
Tabulate a snapshot of each current lease in the
Basic Leases Spreadsheet. Tabulate each lease in
Exhibit A. Color code the runsheet entry
blue. Incorporate each lease into the appropriate tract tab in the
Title Chain Spreadsheet as of the lease effective date.
For each lease, confirm during tabulation:
- Is the interest owner the correct leasing party?
- Is the lease executed and acknowledged correctly?
- Are all requisite interest owners included (joint tenants, life estate and remainderman, etc.)?
After crediting all leases, tabulate the interest owned in the Basic Lease Sheet column and determine leased acreage, unleased acreage, and any force-pooled acreage. Note these totals at the bottom of the Basic Lease Sheet. Cross-check your Basic Leases against the Ownership Report.
Assignments of Current Leases
For each assignment of a current lease, tabulate it in Exhibit A and chain it by creating or incorporating into an existing leasehold tab in the Title Chain Spreadsheet. Create a separate leasehold tab for each lease or group of leases with common working interest ownership.
Carefully analyze the assignment's Exhibit A to determine what leases it covers in your section and what interest is being assigned. Even when using a master list copy-and-paste shortcut, independently verify coverage and interest transferred.
Watch for reserved ORRIs in assignments. Some assignments reserve an overriding royalty interest in favor of the assignor. These are sometimes overlooked by prior DTO attorneys, causing downstream discrepancies in the numbers. Always review assignments for reserved ORRIs, including those noted only in footnotes of prior opinions.
Depth Clauses & Pugh Clauses
Tabulate all HBP leases in Exhibit A even if they do not cover your target depths. Tabulate all assignments covering leases that cover your depths, even if the assignment itself does not cover your depths. No need to tabulate assignments covering leases that do not reach your depths.
If a lease's pugh clause or depth clause limits its coverage to formations above or below your target, write an Objection and Requirement stating that certain depths have been released and calling for a recorded release if none exists. In the Numbers, incorporate those leases with a notation such as "shallow rights only" and add an Examiner's Note in the tabulation.
Pooling Orders & Force Pooling Elections
If a pooling order applies, chain it like a lease: create its own tab and note the Operator as owning all pooled interest unless the order specifically states otherwise.
Tabulate unleased mineral owners in separate tabs grouped by their election type (e.g., all election 3(c) owners in one tab, election 3(d) in a separate tab). Note the acreage attributed to each election. In the Numbers, denote participating vs. electing owners and their specific election (FPa, FPb, etc.).
If a working interest owner was not mentioned in the Pooling Order or was dismissed from it, their interest is "non-pooled" acreage. This means either they entered into a separate agreement with the Operator and Non-Operators, or they paid upfront costs to participate directly.
Some units have more than one pooling order covering different formations and different units. Tabulate all such orders and analyze how they interact for the purposes of this DTO. Confirm all ownership tabulations crediting pooling elections with the reviewing attorney before drafting the Numbers.
Concept Summary
With the title chain, encumbrance analysis, and leasehold tabulations complete, the attorney assembles the formal opinion package: the Cover Sheet, the Body (encumbrances, comments, and Objections and Requirements), Exhibit A (lease and assignment tabulations), Exhibit B (OCC order tabulations), Exhibit C (tract plat), and the Numbers spreadsheet. This step also involves a final records check to catch any instruments filed after the abstract was cut.
Final Records Check
Run a final check on county records to catch any instruments filed after the abstract was cut.
Both platforms require a firm account. Contact the managing attorney for credentials. Oklahoma County Records has a subscription allowance of 30 instruments per month.
Cross-reference any old or unrecognized owners against acquisition and merger tracking resources to confirm current entity status.
Cover Sheet, Exhibits A, B & C
Complete the Materials Examined section of the Cover Sheet. Include any client-provided unrecorded documentation and any document downloaded from county records databases not originally abstracted against the subject lands. Confirm header information is correct on the second page.
Finalize the mineral tract plat begun during the fee chain (Step 3) as Exhibit C.
Exhibits A and B should already be substantially drafted. Clean them up, ensure all Examiner's Notes are present, and add Objection and Requirement cross-references throughout.
Calculations Spreadsheet
The Calculations Spreadsheet translates title chain data into decimal ownership interests. Save a copy of the title chain sorted by largest to smallest mineral interest per tract, then copy and paste owners into the spreadsheet.
Tract Acres tab: Fill in the yellow cells. Do not fill in depth splits or tract descriptions here; those are entered manually in the Numbers later.
Title tab: Always use an equal sign before every number entered (e.g., =3/4 not =75%). Input fractions wherever possible. Fill out the yellow cells; all others autopopulate.
Rounding errors: Check the bottom of the first tab after all owners are entered. If rounding errors exist, manually adjust randomly selected owners by adding or subtracting 0.00000001 (highlight adjusted cells in a bright color). Save a clean original copy before proceeding.
Adding rows: Insert rows in the Title tab, highlight the row above, drag its formulas down, then go to the Consolidated tab and insert rows in the same position and drag formulas down there as well. The ConFinal tab pulls from the Consolidated tab; verify the Consolidated tab for errors before running the buttons.
Save a clean original copy and a working copy. Using the working copy: (1) hit "Create ConFinal," then (2) hit "Create Tracts 1-15." Create three copies of the ConFinal tab named "Unit Summary," "Lease Summary," and "ORRI Summary." When saving copies, select the entire tab, paste as values, and deselect. This prevents rounding issues when copying to the Numbers spreadsheet.
Numbers Spreadsheet
Unit Summary: List the client first, then all other owners alphabetically. Lump all unleased owners into one line. Average Lease NRI = Unit NRI divided by Unit WI.
Lease Summary: Sort by lease number smallest to largest. Move tract, NMA, and lease royalty columns into adjacent columns in order, then insert a blank row between each entry before copying into the Numbers.
Fee & Royalty Interests by tract: For each tract, enter mineral owners' NRI in unit using: mineral owner's net acres divided by total acres in unit, multiplied by the lease royalty. For unleased owners, put "N/A" in the royalty and lease columns. If more than 10 unleased mineral owners exist, create a separate "Unleased Ownership Schedule" tab.
Unit Working Interest: Provide a tract-by-tract breakdown of every WI owner's interest, including a lease NRI column (NRI divided by the decimal interest). This is the WI breakdown, not simply the Unit Summary repeated. Include footnote references and cross-reference Objection/Requirement numbers in all ownership schedules.
Body: Encumbrances & Objections and Requirements
The Body contains three primary sections: (1) Encumbrances (easements, mortgages, expired leases); (2) Comments; and (3) Objections and Requirements. Use the firm's OK Body form and its boilerplate objections as the starting point, organized by header topic.
Before writing each Objection and Requirement, confirm that the underlying defect has not been cured by the MTA or SLTA (as analyzed in Step 2). Run the 5-year and 10-year checks to identify additional objections arising from defective execution, marital status, or final decree issues.
After drafting Objections and Requirements, cross-reference each objection number in the appropriate ownership schedules in the Numbers spreadsheet.
Concept Summary
Before delivering the opinion, every document in the package must be checked for formatting consistency, accuracy, and completeness. A title opinion is a formal legal document that will be relied upon by the client, potential lenders, and future title examiners. Formatting errors, inconsistent number formats, or overlooked page number issues reflect on the quality of the opinion as a whole.
Spell Check & Document Formatting
- Run spell check on all documents, including every tab of every Excel spreadsheet
- Confirm all Word documents are in Garamond 11pt font, with 0pt before/after spacing and 1.2 line spacing, all text blocked (justified)
- Confirm attorney signature appears in a cursive font
- Check all headers and page numbers in every document; manually update page numbers in each Numbers tab as required
- Ensure Exhibit A has its own page number sequence independent of the Body
- Confirm header and page number on pages 2+ of the Cover Sheet are correct
- Confirm the opinion type in all headers matches the opinion being rendered
Numbers Spreadsheet Formatting
- Confirm all row heights fit the content without excess blank space (use print preview for each page)
- Clean up owner names so the exact same name is used for each entity across all tabs
- For wrapped WI owner names, copy and paste to remove gaps between tract numbers
- Use 8 decimal places for all values except NMA and percentages (6 decimal places for those)
- Use a leading zero before the decimal point only for acreage values; no leading zero for all other values
- Round NMA in headings to two decimal places; use fractions (not percentages) in royalty columns
- Confirm whited-out calculation rows at the bottom of royalty tabs do not appear in the final PDF
- Ensure all Objection/Requirement cross-references appear correctly in ownership schedules
Master List Updates, Peer Review & Delivery
- Add new mortgage tabulations to the master list of mortgages
- Add new assignment tabulations to the master list of assignments
- Conduct a peer review and proofreading pass across all documents in the opinion package
- Print the Numbers and the Comments/Objections and Requirements sections of the Body for a final hard-copy review
- Scan and save the color-coded and check-marked runsheet
- Compile all documents into the final PDF package. Ensure the final PDF is text-searchable (OCR applied if scanning)
- Confirm the invoice is complete, including all attorney and landman time, any imaging costs, and any client-specific billing requirements
- Deliver the final opinion, Numbers spreadsheet (where required), and invoice per client delivery instructions
The topics below appear throughout the examination process as expandable panels anchored to the relevant steps. They are collected here as a single reference for convenience.
Indian Lands & Allotment Title
Wild vs. civilized tribes, Dawes Rolls, allotment vs. homestead patents, Choctaw/Chickasaw dating rules, federal trust restrictions. See Step 3.
Oklahoma MTA -- 16 O.S. §§ 71-80
30-year root of title chain, severed mineral carve-out, notice of claim requirements, effect on pre-root defects. See Step 2.
Simplification of Land Titles Act (SLTA)
10-year cure for certain execution and proceeding defects. Broader than MTA as to severed minerals. See Step 2.
Statutory Pugh Clause
Formation-by-formation HBP analysis, effective date implications, interplay with depth clauses and entirety clauses. See Step 4.
Force Pooling & OCC Orders
Election types, non-pooled acreage, sharing of pooled interests, mortgage subordination to pooling, multiple overlapping orders. See Step 4.
Easement vs. Fee
"Object of the verb" rule, St. Louis-San Francisco Ry., highway and railroad ROW deeds, extrinsic evidence. See Step 2.
Mortgage SOL -- 46 O.S. § 301
30-year recording SOL, 7/10-year maturity SOL, no SOL for federal mortgages, quitclaim release, amendment vs. assignment. See Step 2.
5-Year & 10-Year Curative Rules
Execution defects, entity authority, AIF/POA, marital status (surface only), final decrees, sheriff's deeds. See Step 3.