Search found 582 matches

by GuyM
Thu Jul 02, 2020 6:28 pm
Forum: Oil and Gas Exploration
Topic: Oil rig workers claim unfair treatment in a system 'rotten to the core'
Replies: 3
Views: 80

Re: Oil rig workers claim unfair treatment in a system 'rotten to the core'

Wouldn't the foreigners have to do 14 days quarantine? Right now, everyone has to undertake 14 days of managed isolation (at a hotel); following a few lapses there's also strict enforcement of two negative tests (day 3 and day 12, IIRC); quarantine is a more strict regime for those whop are symptom...
by GuyM
Wed Jun 24, 2020 5:09 am
Forum: Oil and Gas Exploration
Topic: The U.S. Has Already Lost More Than 100,000 Oil And Gas Jobs
Replies: 9
Views: 1386

Re: The U.S. Has Already Lost More Than 100,000 Oil And Gas Jobs

And the offshore drillers are in big trouble too: "This month, the number of floating rigs at work is expected to hit the lowest level since 1986 as oil companies cancel or defer contracts, said industry executives and analysts." https://uk-mobile-reuters-com.cdn.ampproject.org/c/s/uk.mobile.reuters...
by GuyM
Tue Jun 23, 2020 10:06 pm
Forum: Oil and Gas Exploration
Topic: Polarcus cutting by 20%
Replies: 2
Views: 404

Re: Polarcus cutting by 20%

Polarcus seems to follow the fate of Dubai where its headquarters is. They both rise and fall on the oil price I suspect; while Dubai's not a bit producer/exporter there are plenty of businesses (and ex-pats) there servicing the oil industry in the surrounding nations. Not a cheap place to operate ...
by GuyM
Mon Jun 22, 2020 3:43 pm
Forum: Oil and Gas Exploration
Topic: The U.S. Has Already Lost More Than 100,000 Oil And Gas Jobs
Replies: 9
Views: 1386

Re: The U.S. Has Already Lost More Than 100,000 Oil And Gas Jobs

Ah - some detail here on the US E+P industry and how it has been performing financially over the last 10 years. Not very pretty: https://www.capriole-llc.com/news/2020/4/20/qt22aqcei7jqbyb7nnhci6xugx961v The oil price war with Russia/KSA took things to the edge of the cliff, and COVID-19 may have pu...
by GuyM
Mon Jun 22, 2020 3:32 pm
Forum: Oil and Gas Exploration
Topic: Polarcus cutting by 20%
Replies: 2
Views: 404

Polarcus cutting by 20%

https://www.offshore-energy.biz/polarcus-restructures-with-20-headcount-reduction/ Shame - more pain for the sector. Not clear how many boats they have running. This might impact on DUG as well, as DUG provide their processing and onboard processing technology. https://www.hpcwire.com/off-the-wire/d...
by GuyM
Sat Jun 20, 2020 7:05 pm
Forum: Oil and Gas Exploration
Topic: The U.S. Has Already Lost More Than 100,000 Oil And Gas Jobs
Replies: 9
Views: 1386

Re: The U.S. Has Already Lost More Than 100,000 Oil And Gas Jobs

The ShaleProfile blog shows the peak of US unconventional production in November 2019 as 8.1 million bbl/day. Total US oil production in November 2019 is given by the EIA as 12.9 million bbl/day Global oil production in November 2019 was 81.5 million bbl/day. That means at the peak US unconventional...
by GuyM
Fri Jun 19, 2020 6:15 pm
Forum: Oil and Gas Exploration
Topic: The U.S. Has Already Lost More Than 100,000 Oil And Gas Jobs
Replies: 9
Views: 1386

Re: The U.S. Has Already Lost More Than 100,000 Oil And Gas Jobs

I joined the geophysics industry in 1992 and this decent from the 2013-14 "high" has been similar I suspect to the "flat period" when I was hired on. It was a good 8-10 years with oil prices below US$40 where we bumbled along with good years and bad, and companies coming in and out of debt crises; t...
by GuyM
Fri Jun 19, 2020 2:30 am
Forum: Oil and Gas Exploration
Topic: The U.S. Has Already Lost More Than 100,000 Oil And Gas Jobs
Replies: 9
Views: 1386

Re: The U.S. Has Already Lost More Than 100,000 Oil And Gas Jobs

Crude oil price is close to $40 now. I am optimistic. Suspect it needs to be sustained >$55 before you get break-even right along the supply chain if you include servicing debt. And it's that whole supply chain that is key - cutting costs by making your contractors work below their breakeven is jus...
by GuyM
Thu Jun 18, 2020 12:25 am
Forum: Oil and Gas Exploration
Topic: The U.S. Has Already Lost More Than 100,000 Oil And Gas Jobs
Replies: 9
Views: 1386

Re: The U.S. Has Already Lost More Than 100,000 Oil And Gas Jobs

There's a desperate need for oil companies to cut costs, especially those that have significant debt obligations. The reduction in cashflow is a real problem when those debt payments come up, and the US oil industry has done well out of cheap borrowing. There's wider concerns out their too. A lot of...
by GuyM
Thu Jun 11, 2020 1:16 pm
Forum: Oil and Gas Exploration
Topic: Marine seismic data acquisition
Replies: 1
Views: 304

Re: Marine seismic data acquisition

High resolution tends to be first and foremost about the frequencies used. You get higher vertical resolution of course, but higher frequencies maker for smaller fresnel zones and so better horizontal resolution as well. For that to be effective you also need smaller CDP bin sizes, so you end up wit...
by GuyM
Sun Jun 07, 2020 1:29 am
Forum: General Geophysics and Geoscience
Topic: Guess geophysics terms (2)
Replies: 7
Views: 642

Re: Guess geophysics terms (2)

is the second one "uh-oh, another boom-bust exploration cycle, sorry kids but we have to move again"?
by GuyM
Fri Jun 05, 2020 4:33 pm
Forum: Oil and Gas Exploration
Topic: bad SPS files (Friday afternoon whinge)
Replies: 1
Views: 272

Re: bad SPS files (Friday afternoon whinge)

Nods. Given the variations and stuff-ups you get in seismic files (SEGD, SEGY) its not a surprise. A fair chunk of software support questions when I was in the seismic processing software business were about bad formats. We had a bunch of tools to help people deal with it but sooner or later you nee...
by GuyM
Thu Jun 04, 2020 10:56 pm
Forum: General Geophysics and Geoscience
Topic: Guess geophysics terms (2)
Replies: 7
Views: 642

Re: Guess geophysics terms (2)

1) Travel time
2) bulk shift
3) Plane wave
??
by GuyM
Thu Jun 04, 2020 6:02 pm
Forum: Oil and Gas Exploration
Topic: How realistic are the hopes of oil workers in the geothermal opportunity?
Replies: 3
Views: 309

Re: How realistic are the hopes of oil workers in the geothermal opportunity?

The potential in the US is much wider than that : https://www.nrel.gov/gis/assets/images/geothermal-identified-hydrothermal-and-egs.jpg Direct heat use is one of the key things; in that context you are looking for how deep the resources are where the heat is needed. That is I think where a lot of th...
by GuyM
Thu Jun 04, 2020 5:26 am
Forum: Oil and Gas Exploration
Topic: How realistic are the hopes of oil workers in the geothermal opportunity?
Replies: 3
Views: 309

Re: How realistic are the hopes of oil workers in the geothermal opportunity?

Some of the work in the Netherlands for direct-heat geothermal (for glass houses) drew on oil exploration technology and teams - for example this project : http://geothermalresourcescouncil.blogspot.com/2018/04/netherlands-trias-westland-geothermal.html and the involvement of Amsterdam Petroleum Geo...
by GuyM
Tue Jun 02, 2020 6:29 pm
Forum: Oil and Gas Exploration
Topic: Statics corrections in reflection seismic processing
Replies: 12
Views: 5505

Re: Statics corrections in reflection seismic processing

"The refraction method is easier in terms of data processing, especially when you don't have the computing power we have now. So it actually can be used first." Well, it was. Most modern systems for determining the LVL are going to use a full tomographic inversion that is calibrated by any uphole da...
by GuyM
Sun May 31, 2020 4:40 pm
Forum: General Geophysics and Geoscience
Topic: Guess geophysics terms
Replies: 9
Views: 459

Re: Guess geophysics terms

Free air correction (gravity)
Modelling? (everything :-) )
Wave propagation (mostly seismics)
by GuyM
Sun May 31, 2020 4:38 pm
Forum: General Geophysics and Geoscience
Topic: Filters used in signal analysis, FIR or IIR?
Replies: 3
Views: 343

Re: Filters used in signal analysis, FIR or IIR?

Had to look those terms up:-) I think mostly you'll see FIR filters for the reasons you describe. While these do have edge effects compared to the physical IRR filter banks, the stability - especially with phase - is highly desirable. High computation cost doesn't mean very much these days, broadly ...
by GuyM
Sat May 30, 2020 10:06 pm
Forum: General Geophysics and Geoscience
Topic: What is the difference between GEOLOGIST & GEOPHYSICIST?
Replies: 5
Views: 478

Re: What is the difference between GEOLOGIST & GEOPHYSICIST?

That tends to be in the nature of software, or maybe just processes. I think. In the first generation, expert users request functionality knowing full well its limitations. As people get brought onboard and trained so that mastery declines. Processes become dogma, basically. W Edwards Deming talks a...
by GuyM
Fri May 29, 2020 5:13 am
Forum: Oil and Gas Exploration
Topic: Offset class determination for imaging
Replies: 5
Views: 325

Re: Offset class determination for imaging

Yes - the binning is more complex than the simple 2D case; that's why you need to examine the offsets (or offset vector tiles) to determine the best distribution (ie with the least holes) and/or use some kind of interpolation to fill in the gaps. Mostly people use interpolation schemes to regularise...
by GuyM
Thu May 28, 2020 7:08 am
Forum: Oil and Gas Exploration
Topic: Offset class determination for imaging
Replies: 5
Views: 325

Re: Offset class determination for imaging

Can't think of a reason why that would be the case. Usually the issue is related to the offset distribution across CDPs, which is turn is a function of the SP spacing AND the CDP interval. So for example on a 2D marine line, if there's 2 CDP per shot, then one CDP will have channels 1,3,5,7,9... and...
by GuyM
Wed May 27, 2020 7:09 pm
Forum: General Geophysics and Geoscience
Topic: What is the difference between GEOLOGIST & GEOPHYSICIST?
Replies: 5
Views: 478

Re: What is the difference between GEOLOGIST & GEOPHYSICIST?

I often hear geophysicists complain that geologists take their jobs, but not the other way around. Maybe geophysicists are really geeks and hate to see geologists doing their jobs with minimal understaning about math/physics behind it. :lol: Kind of; I think the geophysics has largely been pushed i...
by GuyM
Wed May 27, 2020 6:49 pm
Forum: Oil and Gas Exploration
Topic: Offset class determination for imaging
Replies: 5
Views: 325

Re: Offset class determination for imaging

The short answer is you don't. Or rather most pre-stack migrations function a lot better when the input dataset has been regularized and bin centred first, whether that's into common offset planes or offset-vector tiles. Holes and irregularities create artifacts that you have to handle in migration....
by GuyM
Wed May 27, 2020 5:06 am
Forum: Oil and Gas Exploration
Topic: Rise in Oil and Gas Exploration Activities Benefit Marine Seismic Equipment and Acquisition Market
Replies: 5
Views: 400

Re: Rise in Oil and Gas Exploration Activities Benefit Marine Seismic Equipment and Acquisition Market

The latter means they are getting worried about servicing their debt, I suspect; normally contractors run up spec library data, as this creates an "asset" on the books that can be amortised (depreciated) over several years, spreading the cost. But the contractors all did that (to death) already from...
by GuyM
Mon May 25, 2020 3:38 pm
Forum: Oil and Gas Exploration
Topic: Rise in Oil and Gas Exploration Activities Benefit Marine Seismic Equipment and Acquisition Market
Replies: 5
Views: 400

Re: Rise in Oil and Gas Exploration Activities Benefit Marine Seismic Equipment and Acquisition Market

I think this is more of an "advertorial" than a news release - they sell this report (and others) annually to equipment suppliers. Of all of the marine seismic companies (which now excludes Schlumberger and CGG) PGS tend to do a fairly decent roundup of the state of the global marine (streamer) seis...