Culberson County, TX - Oil & Gas Discussion archives

Thanks Rock Man for the information, and pointing out that thickness is the correct term. Since our 24,800 acres is on the East side of the Delaware Mountains, and on the slope of same, it would appear that the formations would have been fractured when the mountains were formed.

Drilling is being done within five miles or so, supposedly for the Bone Springs and related formations. Some great wells are coming in about 15-20 miles N and NE and E of this acreage–with no intervening mountains, so is it not accurate to conclude that the same formation would continue for several miles, if no intervening mountains, but do not know what has happen subsurface? You basically have a line of sight from the top of our acreage to NM border and Toyah/Pecos HWY.

Since it is the same formations being drilled, albeit, ours Bone Springs is shallower, but on same side of the mountains, you seem to be saying it may not contain the same percentage of oil and gas. That is interesting, as since all were laid down at the same time, flowing and settling from the same source, it would seem they would have same basic contents. Certainly a fault, or uplift would have changed the formation being made by nature, but at least on the surface, none is evident.

Appreciate you taking the time to explain these matters.

Mike

Several comments to try to address some of your questions/ issues.

Although fracturing tied to mountain formation is probable fractures are oftentimes healed by calcite cement that basically eliminate the fracture openings.

There is no doubt continuity of the same formaitons from where the drilling is to our area, but heterogeneity of the rock in the subsurface is the norm and not the exception. The biggest differences would be tied to presence of organic material that is the key to the souring of the O&G that is making these plays “work”.

In short, one cannot assume the same type of rock as to key reservoir components across miles of the same formation.

Last point is thermal maturity - if the section has not been buried deep enough to “cook” the organic material that may be present, the O&G is not generated and you get nothing from the rock.

Thank you Rock Man for clearing some of this up. We also have some minerals in the Glass Mountains of Pecos County. Some 15 wells or so were drilled on two of the ranches, and were drilling for gas at the time. They hit on 12 or 13, and then the oil bust hit, so they just let them produce out, and the lease drop. In another appraisal the Herndon Drilling Corp. No. 1-A Allison, drilled in NW4 of Section 10, Blk 2, Pecos County, was spudded 4/14/1978, only log tops cited were Permian Leonard 110’ and Wolfcamp Shale 1620’. The TD was 5761’ still in the Wolfcamp, so don’t know how thick it is, and was PB to 2650’ and had Initial Potential Flowed 91 BOPD. It had a lot of parafin in it, and it did not produce long. It was a vertical well back then. All 15 wells cited the Wolfcamp, but at or near the 4,000’ depth, instead of the 1620’ on the Allison. The Allison well is less than 1/2 mile to SE of the Fulk Ranch, which has 12 of the wells mentioned above. All have several of the producing shales–and recorded history of gas production, albeit with high CO2, if from the deeper depths. Most of the wells encountered some difficult issues getting thru what they called the water zone. Would the fact that a lot of parafin in the Wolfcamp at lease less than 3-4 miles to the Fulk Wells, if it was also under the Fulk, with parafin, make it difficult to get thru?

Thanks in advance, we have a lot of acreage open in Pecos County, and La Escalera adjoins us on the North, West and East sides.

Mike

Paraffin content won’t impact drilling but it is a major issue as to being able to produce a well from that interval. Some sort of continuous additive would probably be needed to keep the oil from setting up down hole.

Throne has recently drilled a couple of wells in the Pecos / Jeff Davis / Reeves County intersection area chasing Bone Spring and Wolfcamp section. Initial well completion very poor (only 18 BO per day IP rate) after frac stimulation.

Rock Man,

Thanks again, for the additonal info. We have been told that the Wolfcamp pinches out to the West and South of the Glass Mountains, but under most of the four ranches my wife’s trusts are involved seem to have several hundred to a few thousand feet of Wolfcamp, and other shales.

I do not know how the La Escalera development is doing, but since they are laying permanent electric lines, it appears to be somewhat successful, and the rumor mill says they are hitting both oil and gas. As I understand it, the tops of the Wolfcamp is deeper than our tops in the Glass Mountains. Does that mean anything to a knowledgeable geologist? Thanks again for your information.

Make it a great day.

Mike

Rock Man,

It was spudded 4/14/1978, by Herndon Drilling Corporation as, No. 1-A Allison, in Survey 10, Block 2, T.C. RR. CO. SURVEY, PECOS COUNTY, TEXAS. I do not know how long it produced, as had problem with parafin, and in 1978, oil prices were really low. ie Oil was out and Gas was in.

Mike

Found it - only 7500 BO / interesting acid and acid frac job including xylene and foam.

Located in the thrust belt complex. Some pretty crazy geology down there. Major gas plant and Ellenburger field just up the road - believe that Chevron operates this now

Deeper in this area is much better - too shallow means lower maturity and/or less pressure and less chances of O&G

Rock Man,

The Herndon Drilling No. 1 A Allison, a vertical drill in 1978 encountered the Wolfcamp at 1620’ and was still in it at 5761’. they PB and perforated the Wolfcamp at 2474’-2544’and treated it with 3250 gallons acid (10%)–had the 91 BOPD initial potential flowing.

  The Wolfcamp tops under some of the Fulk and Walker Ranch Wells at about 4,000'.  Fulk No. 9--Log Tops:  Wolfcamp 4036', Mississippian Lime 12,560', Woodford 12,662', Fusselman 12,886', Montoya 13,080' and TD 13,475' PB 13,389' Montoya.  Does this mean the Wolfcamp is 8,480' thick?  Thanks for taking the time to answer.  Mike

There are a whole series of tops missing between the Wolfcamp and Mississippian Lime. All Pennsylvania (Cisco, Atoka, Strawn, Morrow, Canyon).

What county was the Herndon Allison located in? Want to check the cum production numbers.

Rock Man,

It is located about 28 miles south of Fort Stockton, on West side of the Marathon/Fort Stockton HWY 385 (?)–It is less than 1/2 mile to the SE corner of the Montgomery Fulk Ranch. On an East/West line it is about the middle of the four ranches, with 27,000+ acres North of it, and 27,000+ acres south of it. On the east side of the HWY is the SandRidge shallow gas production on Mitchell Ranch–Sand Ridge must have 100 gas wells or so, out of caballos, mostly.

      My son used to pump for a company that was producing the gas wells on the Fulk Ranch, and had 3-4 on La Escalera Ranch--and he was called out to the Fulk No. 9 to help slow up the gas flow.  Something had happened underground, and the well started producing over twice what it's normal flow was in Natural Gas, and started producing several hundred barrels of oil.  The oil was treated as waste water, and the well was shut in and worked on to produce the regular flow.  The log tops' that are cited in the old report I have says:

Texas Pacific Oil Co. Montgomery Fulk No. 9 (Section 9, Blk 170, Texas Trunk Line Co, Pecos County), are as follows: Wolfcamp 4036’, Woodford 12,662’, Fusselman 12,886’, Montoya 13,080’, Mississippian Lime 12,560’, Montoya 13,080’.

Fulk No. 10: Top Thrust 5554’, Caballos 6054’, Tesnus 6800’, Base of Tesnus 12,030’, Mississippian 13,426’, Woodford 13,526’, Devonian 13,724’, Silurian 13,753’. Fusselman 13,789’ and Montoya 13,960’.

Fulk No. 11: Wolfcamp 4076’, Mississippian 13,060’, Woodford 13,168’, Upper Silurian 13,348’,

Fulk No. 12 Wolfcamp 3822’, Mississippian 12,466’, Woodford 12,566’, Upper Silurian 12,694’. (That is all the cites in the report from Montgomery Fulk.

Exxon No. 1A Walker Glass Mtn Corp–Section 23, Blk 170, Texas Trunk Ry Co–Spudded 9/15/1978, logs cite is sketchy, original TD 6882’ WOLFCAMP, suspended operations, reactivated 9/4/1979–PB 7680’, and perforated 6311-6419 with 30 shots OA, treated with 4500 gallons and Frac 24,000 gallons plus 48,000# sand. Well Flowed 400-429 MCF gas per day, Dry and Abandoned 5/21/1980–Farmed out, produced a little, but Oil Bust hit, and shut it down.

Exxon No. 1 B–Walker Glass Mtn Corp–Section 14, Block 181, HE&WT Ry Co., Pecos County, Texas Spudded 11/12/1978, completed 1/23/1979–TD 8080’ Pennyslvanian–Cored Permain 6013-39, recovered 26’, no description of core. Dry and Abandoned 11/23/1979.

Exxon No. 1C–Walker Glass Mtn Corp–Section 12, Blk 181, HE&WT, Pecos County, —TD 7754’ Wolfcamp.

Don’t know the log top or bottoms on Wolfcamp or any of the other producing shale formations on the Montgomery Walker Ranch, as the Oil Bust occurred about this time, and everything was pretty much shut down.

Hope this helps give a perspective of the Glass Mountain producing shale formations–a lot of promising pay zones, but will take someone with some knowledge, and expertise to extract the oil and gas.

Make it a great day.

Mike

Several companies (PT Petroleum, Forge Energy, Three RIvers) have recently been drilling north of here along and south of Interstate 10 chasing Wolfcamp and Spraberry / Bone Spring section with both verticals and horizontals. Depths at top of Wolfcamp around 7500’.

So so results to date - decent IP’s on some wells but very rapid declines.

Peter, Rock Man is correct, unfortunately.

The legal description is correct save for the county. Block 120 transects the Hudspeth/Culberson line. Section 6 is in Hudspeth County.

Peter, the area you describe (far NW Culberson County) has had no historical production and is far removed from any drilling activity (which is focused in the eastern part of the county).

Geology here is working against you as to prospectivity.

Tom Brown Inc did some leasing in Block 120 in 2005 but did no drilling.

Sorry for the less that ideal news

Peter,

I checked the RRC GIS Map and I got this message:

No Survey Records Matched

Check your Abstract , Section and Block numbers again and make sure they are correct.

Thanks,

Clint Liles

Hello , so my father bought some land in Culberson county 40 years ago could anyone tell me if there is any drilling going around his land or what it is like ? its in sec 6 block 120 abstact #4051. I searched the RR site and could not locate it . Any help would be appreciated. Have a great day . Peter

So got an email from David looks like the abstract is 6257 not 4051

What’s the closest drill to Section 46,Block 59??