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Posts Tagged ‘well starts’

Lease sale Big Beautiful Gulf 3 (BBG3) will be held on 8/12/2026. The Final Notice of Sale is attached.

Given the rather tepid BBG1 and BBG2 results and the high sale frequency, robust bidding is not expected. Nonetheless, the BBG bidding patterns and tract evaluations have been interesting, most notably BOEM’s rejection of LLOG’s bid for Keathley Canyon 828, an expired lease block in the their Buckskin field.

Keathley Canyon 828 is not among the blocks listed for sale at BBG3. Per the Notice of Sale (p. 4), “any lease blocks whose high bids were rejected and not appealed in the immediately preceding Big Beautiful Gulf lease sale, are expected to be included as eligible for lease.” Can we therefore assume that either the KC 828 bid rejection or the prior lease expiration is being appealed?

The legislatively mandated BBG lease terms are attractive – 10 years and 12.5% royalty for deepwater blocks. A more recent legislative directive requires (wrongly in my opinion) the approval of downhole commingling requests. This accelerates the return on investments in deepwater, high pressure reservoirs. Such commingling has presumably contributed to record Gulf oil production in 2025. The longer term concern is the impact on ultimate oil and gas recovery.

Meanwhile, the Gulf rig count and well start numbers continue to disappoint. Baker Hughes (7/2/2026) lists only 4 active rigs in the deepwater Gulf – one each in the Alaminos and Mississippi Canyon areas and two in the Green Canyon Area. BSEE’s borehole file lists only 15 new deepwater exploratory well starts YTD.

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Per the BSEE borehole file, there were 2 deepwater exploratory well starts since 4/1/2023. The Shell well is another GoM milestone in that it is the 150th well spudded in >8000′ of water. The first was in the year 2000.

Operatorspud datelocationwater depth
Chevron5/5/2023Mississippi Canyon 6086678′
Shell4/13/2023Alaminos Canyon 7288660′

Arena and Cantium continue to drive shelf drilling. Below are the shelf development wells since 4/1/2023:

Operatorspud datelocationwater depth
Arena5/6/2023Eugene Island 261160′
Cantium4/8/2023Main Pass 3860′
Cantium4/1/2023Main Pass 299217′

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➡ Zero 2022 YTD well starts on the California OCS (per BSEE data the only well activity has been for plugging and abandonment purposes)

Many law suits including these cases:

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  • Operating companies that produced >1 million bbls of oil or >1 BCF of gas in 2021 are listed in descending order based on oil production.
  • Both the total number of well starts and the number of exploratory wells are indicated
  • An INC is an Incident of Noncompliance (i.e. a violation). W=warning, CSI=component shut-in, and FSI=facility shut-in are the enforcement actions.
  • All of the below data are publicly available on the BSEE-BOEM websites.
2021
oil (MMbbls)
2021
gas (BCF)
2021/22
well starts

total-expl
2021/22
INCs
W-CSI-FSI
Shell149.8190.828-1211-14-4
bp114.082.75-26-3-4
Chevron83.742.28-81-1-3
Anadarko (Oxy)67.757.88-68-5-1
Hess27.561.72-27-4-0
Murphy25.150.07-74-8-1
LLOG20.429.03-01-1-1
Talos17.723.05-025-26-14
BHP14.55.93-22-3-0
Exxon13.22.31-1-1
Beacon10.515.71-00-0-0
Fieldwood10.424.7685-235-91
EnVen9.612.66-02-6-3
Kosmos9.48.41-11-0-0
Arena8.627.932-068-45-19
Walter8.136.22-23-1-2
Cox6.230.3237-169-3
Eni4.713.62-08-0-2
W&T5.027.21-065-40-7
Cantium4.55.518-023-15-2
QuarterNorth4.28.3no data
GoM Shelf2.34.852-5-2
ANKOR1.42.50-0-1
Byron1.04.45-8-2
Renaissance0.71.620-9-3
Sanare0.34.538-20-3
Helis0.21.21-0-2
Contango0.035.04-0-0
Samchully0.021.2no data

Comments:

  • “Energy transition” companies Shell and bp still love the Gulf of Mexico, which is a good thing for them and us. Together they accounted for 42.4% of the 2021 oil production.
  • The top 4 producers, Shell, bp, Chevron (includes Unocal), and Anadarko accounted for 2/3 of GoM oil production, nearly all of which was from deepwater leases.
  • Those are impressive production numbers for Anadarko (Oxy). No wonder Warren Buffett likes Oxy stock.
  • The relative number of deepwater exploratory wells is mildly encouraging given our concerns about sustaining production.
  • Exploratory well determinations are rather subjective and may not be entirely consistent.
  • Understandably, no exploratory wells were drilled by Arena or Cantium, the companies responsible for most well operations on shelf (shallow water) leases.
  • Overall, the INC numbers are impressively low for the deepwater operators, with Chevron and LLOG standing out. BSEE does not post the specific violation information (more on this in an upcoming post), so it’s difficult to properly assess a company’s compliance record.
  • Unfortunately, incident data could not be included on the scoreboard. BSEE’s incident tables are badly out of date, and no 2021/2022 summaries have been posted.
  • Fieldwood’s disturbing INC numbers were discussed earlier this year. High INC rates for 3 other operators have also were noted last month.
  • Exxon production is limited to the Hoover Diana spar, which was installed 22 years ago. The largest US oil company has only drilled one GoM exploratory well (2018) in the past 5 years. Currently, their main GoM interest seems to be the sequestration (disposal) of onshore emissions. (More on this topic in an upcoming post.)

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BSEE data

With regard to shelf drilling activity (<1000′ water depth), a total of 55 wells were started in 2021 and 2022 (first quarter). Only 2 of these wells, both by Walter Oil and Gas, were classified as exploratory. The most active drillers (by far) were Arena Offshore (30 well starts) and Cantium LLC (16 well starts). Ankor, EnVen, and Talos were the only other operators with drilling activity.

Reasons for concern:

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