Showing posts with label DeclineRates. Show all posts
Showing posts with label DeclineRates. Show all posts

Saturday, August 20, 2022

A Petro-Hunt Well In Charlson Oil Field Just Went Over 500K Bbls Crude Oil Cumulative -- Less Than Four Years Old -- August 20, 2022

Full production data provided below. Note:

  • very mediocre initial production;
  • very minimal Bakken decline

The well:

  • 32530, 308, Petro-Hunt, USA 153-95-4A-9-7H, Charlson, t1/19; cum 502K 6/22;

Recent production:

PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN6-20223086028613458920285352015786
BAKKEN5-202229534753164102736913785515
BAKKEN4-20222370937010346515989245312998
BAKKEN3-20223160386079348898367328755
BAKKEN2-20222833313365211047349543553
BAKKEN1-20221620502021147730651972036
BAKKEN12-2021311034210403512620005139912111
BAKKEN11-202130101871020356601805113313120
BAKKEN10-202131101681011050361740960412204
BAKKEN9-202129811380574853135895359886
BAKKEN8-2021319781975050951548712610955
BAKKEN7-202131102721027849811582630211248
BAKKEN6-202130100551002148301536437810033
BAKKEN5-202131106501067350851624925611213
BAKKEN4-202126847184354760117756536986
BAKKEN3-202131909391355257123063017864
BAKKEN2-202128890889104419145097587729
BAKKEN1-202131122201214560261680711469131
BAKKEN12-202031150211506066512082040612977
BAKKEN11-20203018086180417441265478417568
BAKKEN10-2020311718417257732231577323821052
BAKKEN9-202026106381041768621174161085368
BAKKEN8-20200000807
BAKKEN7-20200000000
BAKKEN6-20200000000
BAKKEN5-20200000000
BAKKEN4-20202082118574588612086128410339
BAKKEN3-20203113222132441059019575593512509
BAKKEN2-2020291286612939813818858160981673

Initial production:

BAKKEN1-2020311469214555918121713378016939
BAKKEN12-2019311580815917972737881037665
BAKKEN11-2019301546415475924441767041558
BAKKEN10-20193118477184101018235374267932479
BAKKEN9-2019261367313718858825237614018926
BAKKEN8-2019311708916935999329995946020319
BAKKEN7-2019271757817497862825643228622597
BAKKEN6-2019211019910314575320163020029
BAKKEN5-2019311977319720869639425039209
BAKKEN4-20193022912228539763426531073931713
BAKKEN3-201931304133063910881494333535413863
BAKKEN2-2019282801728045757039270365812494
BAKKEN1-2019302897029297788036947367380
BAKKEN12-2018230992270821501

Wednesday, March 4, 2020

About That Dreaded Bakken Decline -- March 4, 2020

This page will not be updated. The Oasis Kellogg Federal wells are tracked here.

The well:
  • 35118, 1,089, middle Bakken section line well, t7/19; cum 150K 1/20; 32K month; no decline yet after seven months; 40 stages; 6 million lbs; first month production of 16,269 bbls over 18 days extrapolates to 27,115 bbls of crude oil; note also, that the operator has sold all oil ("runs") that has been produced ("BBLS Oil").
 Full production profile to date:
PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN1-202031323223232216907108615989118712
BAKKEN12-20193129432294321419687648818954761
BAKKEN11-2019302845028450150657696475199805
BAKKEN10-20193130423304231660077495746381865
BAKKEN9-2019440924092143610923988281
BAKKEN8-2019108996899688712070119786595
BAKKEN7-20191816269162691814939886368352475

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Do Not Leave Me

Ne Me Quitte Pas, Nina Simone

Sunday, May 5, 2019

Oasis Well: Production Jumps Almost 20X -- Not Re-Fracked -- The Excitement Of The Bakken -- May 5, 2019

Better production ten years later than when it was first drilled/fracked/completed in 2009. 

Let's see: 14,517/816 = can we say production jumped almost 18x -- or almost 20x -- after daughters were fracked? See full production profile at this post. This well runs diagonally under/over a number of daughter wells.

Disclaimer: I am inappropriately exuberant about the Bakken.

The well:
  • 17986, 510, Oasis, Aagvik 1-35H, API 33-053-03008, Banks, t12/09; cum 213K 3/19; this well runs diagonally under/over all the "new" Aagvik wells being drilled/fracked.
Not re-fracked, according to FracFocus.
PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN3-20193114517143261103546044457340
BAKKEN2-20192813631136161079242137352426615
BAKKEN1-20197368033563350981159313810
BAKKEN12-20180000000
BAKKEN11-20180000000
BAKKEN10-20180000000
BAKKEN9-20180000000
BAKKEN8-20180000000
BAKKEN7-201824470559100102875632
BAKKEN6-20182052658701274105222
BAKKEN5-20180000000
BAKKEN4-20181535429119094277517
BAKKEN3-2018318168691802176184224
BAKKEN2-2018215766000144912390

Sunday, October 21, 2018

$8 Million In One Year For An Old Bakken Well -- BR Merton -- October 21, 0218; The Dreaded Bakken Decline Rate

Neither NDIC nor FracFocus has data to suggest this well was re-fracked:
  • 17471, 793, BR, Merton 1-3H, North Fork, t4/09; cum 460K 8/18; look at production jump that begain in 8/16, but note the huge production in 4/17 --
BAKKEN7-2017301448814307205517533174610
BAKKEN6-2017301768317545320324372242980
BAKKEN5-2017311868118871474525391253140
BAKKEN4-2017302065320495577529028289540
BAKKEN3-2017311848918798500425614255370
BAKKEN2-2017281897818572502625288252180
BAKKEN1-2017301400714279447219425193520
BAKKEN12-2016281068810526412811625115550
BAKKEN11-20161692609348334913085130450
BAKKEN10-201618752774022085930692630
BAKKEN9-2016291352213593345418355182830
BAKKEN8-2016211033310192301611993119450
BAKKEN7-20160000000
BAKKEN6-20160000000
BAKKEN5-20160000000
BAKKEN4-201624127413881169245423940
BAKKEN3-201631181421381527340433270
BAKKEN2-201629173414221421317531030
BAKKEN1-201631198219151548317831010
BAKKEN12-201531175818811368243023458
BAKKEN11-201530179319141429220621310
BAKKEN10-201531197018631572276926920
BAKKEN9-201530198318261616193518600
BAKKEN8-201531205422261607171416360


The graphic:



Note the two wells running opposite direction of #17499 (the well noted above).

Both those wells were fracked at the very same time the production of #17499 jumped significantly, in 8/16:
  • 25199, 2,928, BR, Merton 21-15MBH 2NH, North Fork, t8/16; cum 379K 8/18;
  • 25201, 3,360, BR, Merton 21-15TFH 3NH, North Fork, t8/16; cum 395K 8/18; 
Now, of the two wells running north, what well was closed to the index well, #17471, a middle Bakken well?

The answer: #25201, a Three Forks well.

In the year after the frack of the neighboring wells, the index well produced 174,309 bbls, well above the 20,000 bbls it produced in the previous 12 months.

174,309 - 20,000 = 172309 bbls x $50 = $8.6 million over 12 months for a well that appears not to have been re-fracked. (It is possible the well was re-fracked; I just don't see the data that would "prove" it.)

*******************************
I Just Love Reading Anecdotes About Paul Dirac

From The God Problem, Howard Bloom, c. 2016, p. 542:
With his pointed chin, his high forehead, his near-Mohawk-like-shock of hair, and his intense eyes, Paul Dirac looked as if he was flying through life.
But he was doing it quietly.
So quietly that if he spoke two sentences during a dinner party, it was counted as a night of stunning loquacity.
For example, there was the dinner party where Dirac was seated next to another bright man known for his silence, the celebrated E. M. Forster. It is said that Dirac and Forster both sat in utter wordlessness through the soup course. Then, just before the main course arrived, Dirac became chatty. He turnd to Forster, whose works he had read, and asked, "What happened in the cave?" He was referring to a cave that had appeared in a crucial scene in Forster's book A Passage to India. And those six syllables were Dirac's only words. Forster said nothing. But he had been listening. He was just thinking the question through. Both Forster and Dirac remained in silence through the main course. They maintained their silence until the dessert arrived. Then Forster turned to Dirac with an answer: "I do not know."
No wonder one of London's newspapers said Dirac was "shy as a gazelle, and modest as a Victorian maid."
Upon re-reading that, one wonders if "internally," both Forster and Dirac were running at what "we" would consider "normal" time. Is "time" relative? Is time "relative' for each of us? Or think about the time delays in interviews on television between an anchor in New York City and a talking head in Tel Aviv.

Paul Dirac, by the way, is more commonly remembered as Paul A. M. Dirac. I wonder if he thought about his "A. M. Dirac" moniker and the moniker of E. M. Forster.

Thursday, September 20, 2018

The Dreaded Bakken Decline -- September 20, 2018

Disclaimer: I am inappropriately exuberant about the Bakken.
Disclaimer: the "dreaded decline rate" in the Bakken has never bothered me.

Even though the "dreaded decline rate" never bothered me, I was always of the mind that the oil companies would "figure it out." The "production type curves" have borne that out. The decline rates have become less steep; they seem to plateau at higher levels; and once they reach their plateau they tend to stay there "forever." But this is what is unusual about Bakken tight, horizontal, unconventional wells compared to conventional, vertical wells: the former often see a jump in production for any number of reasons, and it appears one should anticipate a jump in production every five to seven years under optimum conditions.

A reader brought this well to my attention. I was initially concerned there may be a typo, and I would want to check this well again in six months to make sure these numbers are accurate. The best way right now to confirm the numbers are accurate would be to hear from a mineral owner who confirms the pay stub correlates with the data in this table.

Having said that, looking at the "bbls water" and "MCF prod" it appears the "bbls oil" is not a typo. I could imagine a typographical error in one cell or one column, but not typographical errors across the entire row.

I have not seen this before -- at least not to this extent -- this is simply incredible.

PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN7-2018318023979817594031669781615605232
BAKKEN6-201830350213499220965631993489128128
BAKKEN5-201831293482934820751644184770716525
BAKKEN4-20183032546325462343064199640190
BAKKEN3-20183137721377392733776684764980
BAKKEN2-201828281142809624407548833376320952
BAKKEN1-20182519815198362931023272171675955
BAKKEN12-20173119133191123751928094185929316

Total production in July, 2018: 166,978,000 / 6001 = 27,825 boe + 80,239 bbls crude oil = 108,064 boe -- and this is in the eighth month of production. Unprecedented as far as I know. 

This well:
  • 33039, A, Oasis, Patsy 5198 12-17 8B, Siverston, 50 stages; 10 million lbs, t--; cum 282K 7/18;
Another Patsy well:
  • 33041, 606, Oasis, Patsy 5198 12-17 10B, Siverston, t1/18; cum 197K 7/18; again, note the amount of natural gas produced in July: 199,349,000 / 6001 = 33,219 boe + 56,235 = 89,454 boe -- again, in the seventh month, and well above what it was producing in any of the previous six months. I think I know why but won't talk about it now. By the way, note the IP of "606."
PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN7-2018315623555939775311993491939315232
BAKKEN6-20183024611245902743777490773100
BAKKEN5-20183132023320233220175564753780
BAKKEN4-20183027088270883281659173589930
BAKKEN3-20183131098311103413059675594890
BAKKEN2-201828176731766127460345391692017451
BAKKEN1-201813864486442964332664865323933
 
The Oasis Patsy wells are tracked here.

Right now, three operators are really impressing me: MRO, Oasis, and Bruin.

I've not talked about Bruin but they have a number of surprisingly good "MHA" wells in Eagle Nest and McGregory Buttes, I believe. I haven't highlighted Bruin because there are simply so many better-than-average wells, but not as big as these MRO and Oasis wells. But Bruin either has found a great, great location or has some really good completion strategies. My hunch: a little of both.


Sunday, September 2, 2018

Idle Ramblings On A Sunday Morning In North Texas -- September 2, 2018

Updates

Later, 1:04 p.m. CDT: see fracking story below.


Over the past year:
  • AAPL shares appreciated 41%
  • NOG shares appreciated 326%
I'm glad I don't read The NYT for my business news. LOL.
Original Post 

What an incredibly beautiful weekend. I love three-day weekends. There are only two things that drive a five-day week in the US:
  • the economy; and,
  • the educational system.
We all know a little bit about both.

The economy: American productivity is such that most companies could do quite fine with a four-day week. For those companies that need to need to operate 24/7, they could move to a "4-day week" and a "3-day week." Nurses these days often do that -- they get a 4-day week one week, followed by a three-day week the next week.

The education system is so incredibly inefficient, schools could accomplish the same amount of "production" in four days that they do in five. Home schoolers know that, and those who teach as full-time substitutes at public schools know that.

But as long as the "economy" works on a 5-day basis, the schools will remain on a 5-day basis.

Commercial airline pilots have an incredibly efficient schedule, from what I can tell, and emergency room physicians do so, also. Regulations and policies probably discourage this practice now, but in the "old days," emergency room physicians could work a 48-hour continuous, unbroken stretch at a time. Moonlighting.

A close physician friend did that routinely while in the US Air Force while assigned to Grand Forks AFB in the early 80s. His Air Force job was generally Monday through Friday, giving him weekends off. When he had weekends free, he drove to a rural hospital where he signed in at 6:00 p.m. Friday and signed out at 6 p.m. Sunday -- 48 hours pays for one weekend. Not much activity in the emergency room at a rural hospital, but the service had to be "covered."

I digress. But, wow, three-day weekends are nice.

Took me 23 minutes to get to "work" today -- Starbucks. Normally takes a few minutes more, but it's not the length of the ride that matters; it's the quality of the ride. Today -- everyone in Texas is at church or in bed, except a few cyclists. Beautiful, beautiful ride.

************************************
Fracking
Updates

Later, 12:38 p.m. CDT The "next financial crisis" with regard to fracking took place between 2014 and 2016 when Saudi Arabia tried to crush US oil companies. Saudi Arabia failed, but there was a financial crisis in the US oil sector, and many US oil companies failed/went away and/or declared bankruptcy and reorganized and are still drilling.

But the preponderance of business articles written about the fracking industry today suggests things have turned around quite spectacularly and we will see it in the year-end (2018) earnings reports.

The op-ed actually comes close to that, and then stops short -- it would not fit his thesis. I think most folks who actually follow the oil industry closely would argue that the fracking industry has never looked so robust.

A proxy for the Bakken would be the share price of either NOG (a non-operator) or CLR (an operator). These two companies probably know more about the geology of the entire Bakken than any other single oil company. Analysts and investors have now had almost twenty years of experience and/or records of the US fracking industry to study, and most would say that they have been through the worst. Share prices of CLR,and NOG for exactly one year:





A five-year graph would show exactly what the NY Times writer was writing about. But the article should have been written in 2014.

Original Post
 
A reader sent me a link to a New York Times op-ed / book review on the economics of fracking.

Because the op-ed was really a book review, it was already outdated; some "facts" are wrong; and other facts are not even provided. The book was written by a contributing editor at Vanity Fair, which I believe, is struggling financially (but could be wrong, but I doubt it).

The most glaring error: the real reason fracking succeeded. Not once was the price of oil mentioned nor the OPEC embargo nor the efforts of previous administrations and presidential wannabees to stop fracking.

The op-ed: "The next financial crisis lurks underground."

The writer's thesis: the "decline rate" and the "Red Queen."

From the article:
A key reason for the terrible financial results is that fracked oil wells show a steep decline rate: The amount of oil they produce in the second year is drastically smaller than the amount produced in the first year. According to an economist at the Kansas City Federal Reserve, production in the average well in the Bakken — a key area for fracking shale in North Dakota — declines 69 percent in its first year and more than 85 percent in its first three years. A conventional well might decline by 10 percent a year. For fracking operations to keep growing, they need huge investments each year to offset the decline from the previous years’ wells. 

[Maybe: the writer should look at nameplate capacity of wind and solar.]

And the link goes to a New York Times article dated November 22, 2014, with a byline of Williston, ND. A lot has happened in the oil patch in the past four years.

That was true then and remains true today, although the numbers may be somewhat different.

The bottom line: the author of the book and the writer of the op-ed argue that companies drilling in the Permian and the Bakken must keep drilling to replace the oil they produce every year.

I could be wrong, but doesn't General Motors need to keep producing new cars each year to stay in business.

Profit? Let's talk Amazon and Tesla.

Crisis for investors? Let's talk GE. Wow, let's talk GE.

And that canard that frackers are not making a profit is outdated. The frackers, in general, are now producing profits. And many of them are paying (and increasing) dividends. Companies don't increase dividends if they're losing money.

But enough of this.

Oh, one last thing, the title of the op-ed and the thesis of the book: the next financial crisis lurks underground.

Without taking this out of context, isn't this a banking / Wall Street / private investment story? If the companies go bankrupt, the US government isn't going to bail them out, and banks are minimally exposed to risk in the oil industry in the big scheme of things.

On the other hand, the US debt is $10 trillion and rising and is "owned" by all Americans.

But, yes, if you don't understand the industry, I would not recommend investing in the oil sector. 

************************************
My Consequential Book This Week

River: One Man's Journey Down the Colorado, Source to Sea, Colin Fletcher, 1997.

I don't particularly care for the writing style -- verbose. One has to read closely and slowly to get any "facts" from the book. It's a great "travelogue" book -- one to read while resting by the poool if one has lots of time, and literally nothing else to do. But it moves glacially, and if one is easily distracted, one won't get far in this book. Maybe one page or two at a sitting.

I got it mostly for the maps.

Some quick notes:
  • the source of the Colorado River is Peak Lake (actually a pond) on Knapsack Col in the Wind River Range on the western side of the Continental Divide
  • the author started his trek at the four ponds just below Peak Lake -- he did not climb the Knapsack Col to get to the "ultimate" source. He started at the "penultimate" source, I guess
  • from the four ponds, the source flows north, at which point it is called Green River
  • about mile 10, the Green River turns south at "Big Bend"
  • about 100 miles south, one reaches Big Piney, still in Wyoming, and then about 20 miles later one gets to the Oregon Trail (Sublette Cutoff), just north of the Fontenelle Reservoir
  • at about 230 miles one reaches Green River, Wyoming, just north of Flaming Gorge Reservoir
  • the Green River enters Utah about 280 miles downstream, into the Uinta Mountains of Utah; Flaming Gorge Dam is in northern Utah on the Green River
  • the Green River exits Utah and enters Colorado for about 40 miles before it re-enters Utah and the Uinta Basin
  • finally, around Mile 650, the Green River meets the Grand River at the "Confluence," still in Utah; from now it's the Colorado River we all know; it was a political decision to rename the Grand River; together, the main river and the former Grand became, together, "the Colorado"; see this post for more of the story;
  • at about Mile 910, the Colorado River exits Utah and enters Arizona; just after entering Arizona, the river is dammed by the Glen Canyon Dam; the Navajo Generating Station is just off the southeast corner of the dam
  • another eighty miles and the Colorado River is in Grand Canyon National Park, where it turns abruptly, making a 90-degree turn, from flowing south to flowing west; standing on the south side of the Grand Canyon, the river flows from your right to your left; from the east to the west
  • the author marks his "Grand Canyon" map from Mile 1003 to Mile 1227
  • the author's "Grand Canyon" map ends at the Arizona/Nevada state line
  • as noted, the author's "Grand Canyon" map ends about Mile 1227, just short of the Nevada/Arizona state line
  • Hoover Dam, on the border between Nevada and Arizona, about 30 miles southeast of Las Vegas, is located around Mile 1290 on the author's map; Lake Mead, behind the dam, extends almost all the way back to the Grand Canyon
  • from Lake Mead, the river flows directly south from Boulder City, between Laughlin/Bullhead City, to Needles, CA, about Mile 1360; "Point 1180" on the author's map is about Mile 1380
  • the river forms the California/Arizona boundary until it reaches Mexico, just west of Yuma, Arizona
  • the Rio Colorado forms the boundary between Baja California and Sonora, Mexico
  • the river ends in the Gulf of [Baja] California, at Mile 1741, El Gulfo de Santa Clara
*********************************
Reincarnation

Yesterday, I made a short visit to our local Target store. I had Sophia in tow. A few errands.

I parked the car next to a sleek, black Maserati sedan. It brought back vivid memories of being a passenger in a Maserati being driven by an older male acquaintance at fairly high speeds somewhere in the Italian mountains, a long, long time ago.

I remember it as if it were yesterday. I vividly recall the scenery and the incredibly smooth feel of the Maserati on the straightaways and the smooth handling as it took the curves. I recall the scenery, but I don't recall the "smell" of the forests. But the windows would have been rolled up. I remember the leather seats and how comfortable the bucket seats felt. It was a big sedan, but yet, it was a sports car all the same. It was very, very roomy -- unlike the Porsche 911-- I felt very small in the oversized passenger seat. I remember the manual shift with the wooden knob. I don't remember much else of the interior finish -- other than the exquisite leather seats -- but I do recall the wonderful finish -- most likely a dash with a wood finish.

The only problem: I've never -- in this lifetime -- been in a Maserati in Italy. Or in a Maserati anywhere else for that matter.

Spooky.

Monday, July 30, 2018

The Decline Rate In The Permian -- July 30, 2018

This is pretty hilarious. Remember all those horror stories about the "decline rates" in the Bakken? I don't hear much chatter about decline rates in the Bakken any more.

But now we're starting to hear about decline rates in the Permian. From Rigzone: Permian decline rate inaccuracies risky for operators, investors. (Journalists show risk of letting others write the headlines):

From the linked article:
The Permian has thousands of vertical wells that have been producing for decades, but the relative immaturity of the Wolfcamp compared to other zones means pure field data for horizontal tight-oil wells goes back just eight years. Because of this, proxy values based on decades-old data from vertical wells and other shale plays have often been used to determine tight-oil terminal decline rates.
“The challenges of modeling tight well estimated ultimate recoveries (EURs) are growing and accurately selecting a representative terminal decline rate is not always straightforward,” Ryan Duman, principal analyst with Wood Mackenzie’s Lower 48 upstream team, said in a release. “It may have been historically, but using those assumptions for today’s Wolfcamp wells in the Permian may contribute to inaccurate volume assessments and valuations.”
While Wood Mackenzie’s analysis shows terminal decline rates for the Permian’s vertical wells is between five percent and 10 percent annually, the most common terminal decline value observed in mature horizontal Wolfcamp wells is 14 percent.
Once the decline rates are adjusted to reflect the more realistic 14 percent scenario, it’s realized that terminal declines are a long-term risk to production. By 2040, nearly 800,000 barrels per day of Permian production is lost.
Much more at the link.

Sounds like the Bakken to me, during the boom. 

*****************************
A Note for the Granddaughters

One of the traditions with the granddaughters is reading Black Beauty, Anna Sewell, 1877. I first read it to the older granddaughter and then the middle granddaughter. I don't recall Olivia caring for the book all that much, but I must have read the book to Arianna, the older granddaughter, at least three times during pre-school and early elementary grades.

The took follows the life of a single horse from a young horse -- I don't recall if it went all the way back to his life as a colt -- through old age, and how his life changed throughout his life. It was told through the eyes of the horse. It's a beautiful book, a beautiful story.

The other night I read the first chapter to Sophia who just turned four years old in July, 2018. She isn't ready for Black Beauty but she "stayed with me" for the entire first chapter.

One of the reasons I love the book was reading about all the kinds of horse carriages. So, this passage in The Victorians, A. N. Wilson, c. 2003, pp. 261 - 262:
Mrs Warren reckoned in A House and Its Furnishing (1860s, England) that a six-roomed house could be run if you had an income of £200 per annumA New System of Practical Domestic Economy estimated that you should set aside 10 percent of your income on horses or carriages, which would mean you needed £1,000 for a four-wheeler with horses. (The coachman would be paid for out of the 8 percent you would spend on the wages of male servants.) If you had £600 a year you could keep two horses if your groom doubled as a footman. A gig cost £700: that is, a one-horse carriage -- a tilbury or a chaise.
This was the great era of 'carriage folk.' At the beginning of the [19th] century, elliptic springs had made this soon-to-be-obsolete mode of transport enjoy a magnificent flowering. The berlin, barouche, calèche, coupé, clarence, daumont, landau and phaeton all crowded the streets of London in the supposedly prosaic railway age.

In 1814, there were 23,000 four-whelled vehicles in the capital; by 1834, 49,000; by 1864 [think, US Civil War], 102,000, with a further 170,000 two-wheelers.

This represents a huge social class, as well as huge congestion in the streets; and it is this class, this immensely privileged class, probably more comfortable than any human class who had ever existed on the planet, whose offspring were the first with the leisure and time to have a childhood.
If I remember, I will keep the reader updated with the types of carriages mentioned in Black Beauty.