Touchstone Exploration Share Discussion Threads

[homebrewruss] 09/9/2021 09:29

David, I think he means the order in my post above which may or may not indicate the order they are planning to drill:

'And what is planned are development wells at Cascadura but also at least 7 more exploration wells (Royston, Coora Deep, Chinook up dip well, Steelhead, Guabine, Kraken, Bass. That is more than all the exploration wells on shore Trinidad in last 20 years, of which most of them were drilled by TXP too, the familiar fish we have been following.'

[davidblack] 09/9/2021 09:21

Stockport could you explain your comment in respect to Chinook which still fascinates me.

Even in last nights presentation by a non TXP aligned geologist Chinook was referred to as an oil discovery.

[stockport loser] 09/9/2021 09:19

It looks like those drills are in order, which means Chinook is very much in the picture.

[buffythebuffoon] 09/9/2021 09:13

Spangle,

Am I correct in assuming that if you do an intermediate casing you then need to use a smaller bit, and subsequent casing if anything is found deeper down, as we expect.

If so, would this have an impact on pressures given the smaller bore?

Regards,

Buffy

[davidblack] 09/9/2021 09:01

Listened to that talk last night and it was truly shocking.

T&T ministry of energy had major commitments made to it and the delivery was dismal full stop with even BHP and TXP the only two who actually delivered seriously still missing the timelines. The Covid period was after the study.

But if Cascadura lives up to its 200 MCFPD and starts to get delivered next year it will be a godsend for the island with TXP providing all the new gas Trinidad is likely to see for maybe the next couple of years.

If Royston delivers gas and that gets hooked up in 2023 TXP could be producing 25% of all the islands needs! On shore success is what they need as offshore production will take to 2025 or 2026 now.

With Trinidad so screwed for production it’s amazing the T&T government aren’t really pushing things along Re TXP.

Do remember NGC blew a year negotiating on that gas sales deal negotiation. Clearly the bureaucrats who did so have secure jobs unlike the tens of thousands of ordinary workers who rely on the gas processing industries for their paycheck.

[homebrewruss] 09/9/2021 08:56

Spangle the twitter group comment was just a status update:
'They have drilled through the Karamat at this point, and this formation will be logged before entering the Herrera formation.'

Re the conference, a good summary from scott22 on LSE.
'Very interesting conference today covering all exploration commitment wells for oil and gas blocks on TT from 2008 through 2019. There were only a total of six on-shore exploration wells drilled and none are yet on production. There have been no new bid rounds since 2014
Coho will be first new gas discovery to go on production. Cascadura will be second.

Touchstone has drilled most of the exploration wells on shore Trinidad and had had most of the success. It is interesting to see how much they have been able to accomplish, with activity continuing to accelerate that will ramp over years. No one else has done anything like what they have done. And what is planned are development wells at Cascadura but also at least 7 more exploration wells (Royston, Coora Deep, Chinook up dip well, Steelhead, Guabine, Kraken, Bass. That is more than all the exploration wells on shore Trinidad in last 20 years, of which most of them were drilled by TXP too, the familiar fish we have been following.

This puts the delays in a little different light. TXP is moving pretty fast compared to peers and considering minimal level of on shore exploration in Trinidad in last 20 years including none on Ortoire block before TXP program. It is not exactly like hammering out wells in Permian basin or Montney with all the support right there to get them on production almost instantly.'

[spangle93] 09/9/2021 08:36

ref 22206, Junky

Good post - I read it as A... Set casing before drilling into the potentially higher-pressured Herrera

But in any case, regardless of any gas indications (I'm not in the twitter group so I don't know what was posted) they'd wireline the intermediate section so that they have e.g. density logs from surface, downhole ties to seismic. Also, with it being a commitment well, there may be more impetus from authorities to learn about potential productive formations, even if they aren't the target here.


By coincidence, in his professional body capacity, Mr Moonan is promoting a talk today on exactly this issue

"Exploration Commitment Wells In Trinidad, 2008 -2019: Which were drilled, which were not"

I've a feeling TXP would get better marks than many operators

[homebrewruss] 09/9/2021 08:30

Interesting Thommie so you think they my have found something unexpected in the Karamat or at least found it sooner than expected, wouldn't be surprising given each well so far has thrown up something different. Gas was found partly in the Karamat in OL-4 according to Xavier.

[thommie] 08/9/2021 23:03

it has to be sth unexpected. I just revisited Paul baays last proactive interview on 23.8.21.hTTps://youtu.be/eZ_pwDvAp70summary:this morning around 3500ft at royston, next intermediate casing at 4400 and then straight down there.the target will be between 9600-11000ft. expect news at beginning of october.doesnt fit into the updip change and shallower target depths compared to ol 4, or he wasnt aware of it which is highly unlikely....

[johnoxxx] 08/9/2021 22:52

Interesting, thanks for explanation

[junky monkey] 08/9/2021 22:34

You want to log open holes, not cased holes (can be done, but not nearly as good data). So either

A. they were originally planning to case before continuing further down and logging now because it is two different formations with potentially different pressures which is a wise thing to do, or

B. they have hit something high pressure and worried about the wellbore or controlling the pressure in general (like what has happened before) and have decided to stop here and case to be safe, which could be a really exciting problem to have, or

C. They will continue with open hole after (I think this is not very likely), but just to be on the safe side, go ahead and log it while they can so they at least have this data in case something happens to the well (like getting drill pipe stuck, and having to cut high up the string) where they would not be able to get down here to log it later. Awfully nice to have the data before you decide to sidetrack in this location or not.

Let's hope we hit something interesting that kicked them without issues and when we log it it looks like Cascadura on Steroids.

[thommie] 08/9/2021 22:17

hTTps://twitter.com/MoonXav/status/1417812167684919302?s=20you can see it here.. Royston-1 planned 715m east of OL - 4 surpassing the yellow 7a herrera line much more shallow at the updip location. they will also hit the 7bc herrera much shallower - updip as well!no wonder we had this rise yesterday. they already found sth drilling through it in the last days in cuttings or maybe kicks they had to control? too many ppl working at it for too many different companies. someone always knows things before the rest!

[johnoxxx] 08/9/2021 22:12

I’ve followed you, but won’t let me message- maybe you have to follow back first..

[homebrewruss] 08/9/2021 22:09

Junky, one of the twitter group mentioned it suggesting some kind of inside info via the company or contractor re drill depth, Karamat and logging if true.

[thommie] 08/9/2021 22:04

that could explain the difference in depth. I didnt expect anything at 8000ft, was thinking it will start to get interesting at 9500ft plus. but ofc they are 0,7miles east of the OL 4 Shell well. if it's gas and it flows it should be a good point to produce from as well, isnt it?

[johnoxxx] 08/9/2021 22:01

The fact that they’re logging this section then carrying on drilling, can anyone explain why they’ve chosen to do this I.e common practice or not?

[junky monkey] 08/9/2021 21:55

And after the recent seismic, they should have a very good idea where the peak is .... now I'm not going to ba able to sleep again like a kid on Christmas Eve.

Where did the info come from that they are going to log it now? Eyes on the ground see a wireline truck? Eyes on the rig sending out messenger pigeons?

[homebrewruss] 08/9/2021 21:50

If you follow me @russellurwin and send me a dm on twitter I can add you to the group but there's generally more info on here

[homebrewruss] 08/9/2021 21:48

Might be a bit shallower in Royston for the Karamat if they are going for the peak of the anticline

[junky monkey] 08/9/2021 21:48

How do you see the Twitter group? Do you have a link? According to Xavier Moonan - the Chief Geologist's twitter posts, the Karamat is where Shell encountered the Gas Effect in 1965. Now things get interesting ...... and then they will log the Herrera sandstones when they are through them. I think they are logging the open hole here, are going to case it to secure everything, and then drill deeper.

"In 1965, Shell drilled the Ortoire Lizard-4 (OL-4) well to a TD of 10382 feet, encountering approximately 700 feet of gas bearing 7a Karamat and Herrera sandstones. The well was TD'd before entering the regionally more developed and laterally extensive 7bc Herrera sandstones."

"The well will drill the Karamat and Herrera section previously drilled by OL-4 in a structurally favourable position and will be deepened to assess at least the Overthrusted 7bc Herreras"

"Royston-1 is planned to be drilled to 10,700 feet MD targeting at least the Overthrust Mid Miocene Karamat and Herrera turbidite sands within the WSW-ENE trending, SE verging, gently folded, thrusted and subtly backthrusted CSKY anticline imaged on SBC 2D seismic data"

"his anticline sits buried beneath thick sealing deep water clays and successive deltaics within the heart of the Ortoire Syncline, and has remained undisturbed since the Mid Miocene"

"The Cretaceous Naparima Hill and Gautier source rock formations are within and have been within the wet gas window since the Pliocene"

"As such these geological elements suggests this prospect is ideally poised for a significant gas resource"

[adon30] 08/9/2021 21:44

Shell logs were around 9400ft onwards for OL4....

[johnoxxx] 08/9/2021 21:43

Is there a link for the Twitter group?

[captainfatcat] 08/9/2021 21:40

Penal/Barrackpore gas/oil field might be worth a read up on 🤫