# Sell Mineral Rights in Clark County, IL | Berlin Royalties > Sell Clark County, IL mineral rights: Westfield, Siggins and Martinsville royalties near Marshall, Casey and Martinsville. Free valuation with the work shown. Source: https://www.berlinroyalties.com/illinois/clark-county/ Publisher: Berlin Royalties, a veteran-owned oil and gas mineral and royalty buyer in Tulsa, Oklahoma, buying for its own account since 2014. Call or text 918-984-1645. License: free to quote and cite with attribution to Berlin Royalties and a link to the source URL. Where We Buy · Illinois · Clark County ## Sell your Clark County mineral rights. Marshall, Casey, Martinsville: we buy minerals and royalties throughout Clark County, the oldest oil ground in Illinois, on the La Salle anticline at Westfield and Siggins. [Get a Free Valuation](https://www.berlinroyalties.com/free-valuation/) or call or text [918-984-1645](tel:9189841645) Clark County is where Illinois oil began. A gas well near Casey in 1904 and the Westfield discovery in 1905 set off the state's first boom, and Siggins once had an actual oil mine, with men underground collecting crude that seeped through the walls. What is left is a shallow, old, stripper county with a serious orphan well problem and thousands of small royalties held by people who have never been to Marshall. **What produces here.** The Illinois Petroleum Resources Board puts Clark County at 183,468 barrels for calendar 2025, down from 192,778 in 2024. The oil comes from the dome fields along the crest of the La Salle anticline, Westfield, Siggins, Martinsville, Johnson North and South, Inclose, Casey, Oak Point and Weaver, with pay from Pennsylvanian sand at a few hundred feet through the Carper and St. Louis to the Trenton at about 2,300 feet; the ISGS database carries about 1,550 unplugged oil producer records here and Ashmore South is a gas storage field. The operators in the county records include Atlantis Energy, N and R Inc., Ashley Oil, Horizontal Systems, Huff Drilling, Max Knierim, Dover Illinois, Partlow Enterprises and Gary Energy. Drilling is minimal: the IDNR weekly permit logs show four oil well permits in 2025, N and R's Howard 5A to the Grand Tower at 1,700 feet in May, James Brian Ingram's Vincent Gard 1A to the Abbott at 575 feet in June, and Atlantis Energy's Ohme 2-C and 3-C to the Chouteau-Carper at 1,100 feet on December 22, 2025, and no permits in 2026 through late October. The bigger story is the orphans: IDNR data cited by the Chicago Tribune in May 2026 put the statewide count near 3,900 wells and the plugging bill around $155 million, and the paper's reporting on Fireball Production's 603 abandoned wells came from around Casey and Cumberland County. Whatever you own here, producing royalties, non-producing acreage, or an inherited fraction split among family, we will identify it from whatever paperwork you have, value it off the actual wells and activity, and show you the reasoning with the offer. Free, no obligation, and no pressure: if keeping it is the right answer, we will say so. Inherited it? Start with [inherited mineral rights in Illinois](https://www.berlinroyalties.com/inherited-mineral-rights/illinois/). Formations & Plays ## What produces here ### Westfield, Siggins, Martinsville and Johnson The dome fields on the crest of the La Salle anticline where Illinois' first boom started in 1904 and 1905: Westfield, Siggins, Martinsville, Johnson North and South, Inclose, Casey, Oak Point and Weaver. ### Shallow Pennsylvanian, Carper and Trenton At Westfield the pay stacks from Pennsylvanian sand at 280 feet through the Carper at 875 feet to the Ordovician Trenton limestone at 2,300 feet; the county's wells bottom in the St. Louis, Pennsylvanian, Carper, Trenton, Partlow and Devonian. Counties ## Communities we see in Clark County title Marshall Casey Martinsville Westfield Wherever your tract sits in Clark County, we will research it free and value it with the work shown. Nearby ## Other Illinois counties we buy in [Clay County](https://www.berlinroyalties.com/illinois/clay-county/)[Clinton County](https://www.berlinroyalties.com/illinois/clinton-county/)[Crawford County](https://www.berlinroyalties.com/illinois/crawford-county/)[Edwards County](https://www.berlinroyalties.com/illinois/edwards-county/)[Fayette County](https://www.berlinroyalties.com/illinois/fayette-county/)[Franklin County](https://www.berlinroyalties.com/illinois/franklin-county/)[Gallatin County](https://www.berlinroyalties.com/illinois/gallatin-county/)[Hamilton County](https://www.berlinroyalties.com/illinois/hamilton-county/)[Jasper County](https://www.berlinroyalties.com/illinois/jasper-county/)[Jefferson County](https://www.berlinroyalties.com/illinois/jefferson-county/)[Lawrence County](https://www.berlinroyalties.com/illinois/lawrence-county/)[Marion County](https://www.berlinroyalties.com/illinois/marion-county/)[Richland County](https://www.berlinroyalties.com/illinois/richland-county/)[Saline County](https://www.berlinroyalties.com/illinois/saline-county/)[Wabash County](https://www.berlinroyalties.com/illinois/wabash-county/)[Wayne County](https://www.berlinroyalties.com/illinois/wayne-county/)[White County](https://www.berlinroyalties.com/illinois/white-county/) We buy in every Illinois county, including ones without a page here. See the [full county index](https://www.berlinroyalties.com/counties/) or the [Illinois overview](https://www.berlinroyalties.com/illinois/). ### Inherited Illinois minerals? Whether you need a probate, the affidavit and transfer on death routes, the dormant mineral rules, and where unpaid royalties go: [inherited mineral rights in Illinois, what heirs should do](https://www.berlinroyalties.com/inherited-mineral-rights/illinois/). [What Illinois mineral rights are worth](https://www.berlinroyalties.com/mineral-rights-value/illinois/), information only, with this month's activity. [Unclaimed Illinois royalties](https://www.berlinroyalties.com/unclaimed-royalties/illinois/): where the money goes and how an heir claims it. ### The Illinois mineral owner's guide Everything a Illinois owner needs in one place: who owns what under state law, how royalties must be paid and by when, what a buyer can and cannot deduct, the tax treatment of a sale, and the deadlines that quietly cost people their minerals. Free, and no sign-up. [Read the Illinois guide](https://www.berlinroyalties.com/guide/illinois/) Questions ## Straight answers for Clark County owners What are mineral rights worth in Clark County? It depends on the wells and units actually touching your tract, their decline, and your decimal, and in Clark County that ranges from a 120-year-old shallow lease still pumping a barrel or two a day to a tract where every well was orphaned decades ago, so county averages mislead. Illinois publishes no well-level production, so your statements and the lease are the record. We value off them and show the work, free. The wells on our Clark County land are abandoned. Does that mean the lease is over? Often, but it has to be proven. An Illinois lease held by production ends when production in paying quantities stops, and a well on the state's orphan list is strong evidence, but the lease stays on the county record until someone releases it or a court does. The IDNR counted nearly 3,900 orphan wells statewide as of May 2026, and the Chicago Tribune's May 2026 investigation of the 603 wells Fireball Production walked away from was reported from around Casey and neighboring Cumberland County. We check the orphan list and the record for you, free. Can the surface owner take my Clark County minerals if our family has lost track of them? Not automatically. Illinois has no self-executing dormant mineral act, but the Severed Mineral Interest Act, 765 ILCS 515, lets a surface owner or would-be lessee petition the circuit court against severed minerals whose owners are unknown or missing, with published and mailed notice. The court can appoint a trustee to lease the interest and can eventually vest it in the surface owner, seven years after the judgment, or one year where the severance was more than 20 years old at filing. A recorded deed or affidavit with a current address in Clark County is the defense. What does it cost me to sell? Nothing. Berlin pays all title work, document preparation, and recording costs. The offer you accept is the amount you receive. ## Before you sign anything in Clark County The things owners here most often wish they had read first. All free, none of it gated. - [How mineral rights are valued](https://www.berlinroyalties.com/mineral-rights-value/), including the rule of thumb people quote and why it is usually wrong - [Selling mineral rights](https://www.berlinroyalties.com/sell-mineral-rights/) and [selling oil and gas royalties](https://www.berlinroyalties.com/sell-oil-and-gas-royalties/), with the real process and timeline - [The Pugh clause](https://www.berlinroyalties.com/pugh-clause/), the single most valuable sentence you can negotiate into a lease - [What a farm out is](https://www.berlinroyalties.com/farmout-agreements/), and why your operator suddenly changed - [The rule of capture](https://www.berlinroyalties.com/rule-of-capture/), and why a neighbor's well can legally drain your minerals - [Non-participating royalty interests](https://www.berlinroyalties.com/non-participating-royalty-interest/), if your deed carved one out - [Executive rights](https://www.berlinroyalties.com/executive-rights/), if somebody else signs the lease that binds your minerals - [Surface owner rights](https://www.berlinroyalties.com/surface-owner-rights/), if you own the ground and someone else owns what is under it - [Questions to ask a buyer](https://www.berlinroyalties.com/questions-to-ask/) and [what happens if you want out after signing](https://www.berlinroyalties.com/can-i-back-out-of-a-mineral-rights-sale/) Free Valuation ## Find out what your Clark County minerals are worth. Free, no obligation, and no pressure. We reply within one business day, usually faster. Prefer the phone? Call or text [918-984-1645](tel:9189841645) and you will get Stephen, the owner, not a call center. If we miss you, we text back the same day. In a hurry? [Text a photo of a royalty check stub](https://www.berlinroyalties.com/text-your-check/) to [918-984-1645](tel:9189841645) and our [preliminary offer](https://www.berlinroyalties.com/preliminary-offer/) puts a written number in front of you within about two business days. It holds for 7 while you decide. Your Name Phone Number Email Address Where are your minerals located? OklahomaTexasNew MexicoLouisiana ArkansasKansasNorth DakotaMontana WyomingColoradoUtahCalifornia West VirginiaOhioPennsylvaniaKentucky MichiganMississippiAlabamaIllinoisIndianaAlaska Sand/Gravel/AggregateOther / Not sure County (if known) Interest type Select an option Minerals and Royalties Working Interest Overriding Royalty Interest An Entity (LLC, Partnership, Trust) Not Sure Are you currently receiving royalty checks? Select an option Yes No I Used To But They Stopped Not Sure Have you received offers for your minerals before? Select an option Yes No What best describes your situation? Select an option I'm ready to sell now I'm exploring my options I'm just curious what they're worth When would you like this done? Select an option This month This quarter No timeline, just researching Anything else? (optional) Get My Free Valuation No cost, no obligation, and we never share your information.