worldenergydata — D&C Days Reconciliation vs World Oil April 2026 article

How to read this

Metric. D&C days = drilling + completion days (spud→total-depth plus total-depth→final-completion). Wellbores = unique API well numbers (the WO article's convention). The main report breaks drilling and completion out separately in its per-field stat cards; this page uses the combined D&C total so it is directly comparable to the WO benchmark.
Like-for-like. The headline reconciliation is the 9 developments both sources carry (WED 19,445 vs WO 19,940 D&C days). WED-only Big Foot and WO-only Buckskin are shown as separate, non-comparable line items; the raw grand totals (22,478 vs 21,944) span different field sets, so a near-match there is coincidental offsetting, not agreement.
V30 vs V50. Drilling/completion days and wellbore counts are derived from BSEE Well Activity Reports and are identical under V30 and the V50 latest-OGOR rerun — V50 extends only the production window (economics), not these day counts. So this reconciliation is version-independent.

Field-level reconciliation (WED vs World Oil April 2026 article)

Development	First oil	WO bores	WO D&C	WED bores	WED D&C	Δbores	Δdays	Status	Note
Anchor	8/1/24	17	1,825	15	1,825	-2	0	Days match / bore gap	D&C days reconcile exactly, but WED has 2 fewer wellbores — WO counts extra zero-day sidetracks. A bore-count gap, not a day gap.
Buckskin	6/1/19	24	2,004	—	—	—	—	WO only	Identity recovered (2026-07): Keathley Canyon 785/828/829/830/871/872, leases G25806/G25813/G25814/G25815/G25823/G32650, ~25 wellbores in `reports/bsee/buckskin/buckskin_war_activity.csv`. Not yet in the extract — the pipeline's BSEE slice is shelf-only, so Keathley Canyon deepwater must be ingested before its D&C days reconcile (tracked in #842).
Cascade Chinook	9/1/12	14	2,467	14	2,467	0	0	Match	Exact match (days and wellbore count).
Jack St Malo	12/1/14	73	6,928	73	6,813	0	-115	Investigate	Same wellbore count, different day total — recompletion-interval accounting; chase well-by-well.
Julia	3/1/16	9	1,687	9	1,687	0	0	Match	Exact match (days and wellbore count).
Kaskida	—	7	841	7	841	0	0	Match	Exact match (days and wellbore count).
North Platte	—	20	971	14	971	-6	0	Days match / bore gap	D&C days reconcile exactly, but WED has 6 fewer wellbores — WO counts extra zero-day sidetracks. A bore-count gap, not a day gap.
Shenandoah	2/1/25	23	2,346	23	1,989	0	-357	Investigate	Same wellbore count, different day total — recompletion-interval accounting; chase well-by-well.
Stones	9/1/16	22	2,625	22	2,602	0	-23	Investigate	Same wellbore count, different day total — recompletion-interval accounting; chase well-by-well.
Tiber	—	2	250	2	250	0	0	Match	Exact match (days and wellbore count).
Big Foot	—	—	—	38	3,033	—	—	WED only	In the WED extract; the WO article excluded it from its comparison set.
Common (9 devs, like-for-like)		187	19,940	179	19,445	-8	-495		The developments both sources carry — the honest apples-to-apples reconciliation: WED runs -2.5% and at/below the benchmark on every matched field.
Raw total (mixed sets)		211	21,944	217	22,478				Spans different field sets (WED +Big Foot, WO +Buckskin); the ~2% closeness is coincidental offsetting, not like-for-like. WED = 11,124 drilling + 11,354 completion.

Match = days and wellbore count agree · Days match / bore gap = D&C days agree but wellbore counts differ · Investigate = same wellbore count, day gap to chase · WO only = in the article, not yet in the WED extract · WED only = in the extract, excluded from the article set. Δ = WED minus WO.

Well-by-well listing (217 wellbores)

Every wellbore in the WED extract with its BSEE milestones — the line-by-line audit trail behind each field total above. Buckskin's wellbores are absent here — its identity is recovered (see its row above), but the Keathley Canyon deepwater data is not yet ingested (#842); every other WO development is present.

Development	Lease	Well	API	Spud	Total depth	Drill d	Compl d
Anchor	Anchor	001	608114066100	01/26/2016	02/11/2016	16	17
Anchor	Anchor	001	608114066101	02/26/2016	06/18/2016	113	49
Anchor	Anchor	001	608114062100	03/16/2014	05/17/2014	62	15
Anchor	Anchor	001	608114062101	05/28/2014	06/14/2014	17	59
Anchor	Anchor	002	608114063501	07/09/2015	07/28/2015	19	19
Anchor	Anchor	002	608114063500	08/12/2014	11/28/2014	108	65
Anchor	Anchor	002	608114063502	08/14/2015	09/11/2015	28	36
Anchor	Anchor	003	608114067300	09/17/2016	11/07/2016	51	34
Anchor	Anchor	003	608114067301	12/04/2016	01/24/2017	51	33
Anchor	Anchor	AP001	608114075000	12/08/2021	03/14/2022	96	260
Anchor	Anchor	AP002	608114075100	11/16/2022	02/06/2023	82	139
Anchor	Anchor	AP004	608114076100	—	—	0	0
Anchor	Anchor	AP005	608114076900	—	—	0	0
Anchor	Anchor	BP003	608114077400	11/26/2023	05/15/2024	171	276
Anchor	Anchor	SB001	608114072800	11/19/2019	11/26/2019	7	2
Big Foot	Big Foot	001	608124001900	07/26/2005	07/28/2005	2	9
Big Foot	Big Foot	002	608124002001	01/01/2006	01/15/2006	14	7
Big Foot	Big Foot	002	608124002002	01/15/2006	01/17/2006	2	11
Big Foot	Big Foot	002	608124002003	03/23/2006	04/27/2006	35	38
Big Foot	Big Foot	002	608124002004	06/03/2006	06/10/2006	7	21
Big Foot	Big Foot	002	608124002000	08/09/2005	12/02/2005	115	37
Big Foot	Big Foot	002	608124002005	11/25/2008	01/02/2009	38	30
Big Foot	Big Foot	003	608124002301	10/15/2007	11/18/2007	34	21
Big Foot	Big Foot	003	608124002300	11/03/2006	10/07/2007	92	14
Big Foot	Big Foot	003	608124002302	12/04/2007	01/14/2008	41	22
Big Foot	Big Foot	A001	608124006200	04/03/2012	08/07/2012	126	265
Big Foot	Big Foot	A002	608124006300	—	—	0	0
Big Foot	Big Foot	A002	608124006301	—	—	0	0
Big Foot	Big Foot	A002	608124006302	07/11/2024	07/24/2024	13	168
Big Foot	Big Foot	A003	608124006400	—	—	0	0
Big Foot	Big Foot	A003	608124006401	—	—	0	0
Big Foot	Big Foot	A003	608124006402	—	—	0	0
Big Foot	Big Foot	A003	608124006403	—	—	0	0
Big Foot	Big Foot	A003	608124006404	—	—	0	0
Big Foot	Big Foot	A004	608124006001	03/10/2019	03/25/2019	15	156
Big Foot	Big Foot	A004	608124006000	12/10/2011	02/24/2012	76	138
Big Foot	Big Foot	A005	608124006500	05/23/2012	04/16/2023	63	86
Big Foot	Big Foot	A006	608124006601	01/04/2020	01/04/2020	0	22
Big Foot	Big Foot	A006	608124006602	01/19/2020	01/30/2020	11	17
Big Foot	Big Foot	A006	608124006603	02/12/2020	03/01/2020	18	224
Big Foot	Big Foot	A006	608124006600	04/12/2012	11/28/2019	112	38
Big Foot	Big Foot	A007	608124006700	05/17/2012	10/24/2022	98	102
Big Foot	Big Foot	A008	608124006800	01/22/2013	12/02/2021	118	164
Big Foot	Big Foot	A009	608124006900	—	—	0	0
Big Foot	Big Foot	A010	608124007000	—	—	0	0
Big Foot	Big Foot	A011	608124007101	02/05/2021	02/12/2021	7	16
Big Foot	Big Foot	A011	608124007102	02/21/2021	05/22/2021	90	129
Big Foot	Big Foot	A011	608124007100	04/13/2012	01/16/2021	66	22
Big Foot	Big Foot	A011	608124007103	09/18/2023	10/02/2023	14	69
Big Foot	Big Foot	A012	608124005900	—	—	0	0
Big Foot	Big Foot	A013	608124007200	—	—	0	0
Big Foot	Big Foot	A014	608124007300	—	—	0	0
Big Foot	Big Foot	A015	608124007400	—	—	0	0
Cascade Chinook	Chinook	001	608124001000	01/13/2003	06/19/2003	157	27
Cascade Chinook	Cascade	001	608124000800	01/31/2002	04/14/2002	73	9
Cascade Chinook	Cascade	001	608124000801	04/23/2002	05/16/2002	23	22
Cascade Chinook	Chinook	002	608124004601	01/08/2010	02/05/2010	28	9
Cascade Chinook	Cascade	002	608124001600	03/19/2005	05/29/2005	71	140
Cascade Chinook	Cascade	002	608124001601	10/09/2005	11/24/2005	46	60
Cascade Chinook	Chinook	002	608124004600	11/27/2009	12/22/2009	25	19
Cascade Chinook	Cascade	004	608124004700	11/25/2009	03/28/2012	176	18
Cascade Chinook	Cascade	005	608124008200	12/18/2012	12/21/2012	3	9
Cascade Chinook	Cascade	CA003	608124003800	11/06/2008	06/03/2009	209	245
Cascade Chinook	Cascade	CA004	608124004701	04/13/2012	06/17/2012	65	175
Cascade Chinook	Cascade	CA006	608124008300	01/01/2013	08/11/2013	222	128
Cascade Chinook	Chinook	CH002	608124004602	02/11/2010	02/24/2010	13	90
Cascade Chinook	Chinook	CH004	608124009700	12/07/2014	03/11/2015	94	311
Jack St Malo	St Malo	001	608124001300	03/09/2004	05/18/2004	70	5
Jack St Malo	St Malo	001	608124001301	05/18/2004	07/09/2004	52	24
Jack St Malo	Jack	001	608124000402	05/21/2004	06/09/2004	19	25
Jack St Malo	St Malo	001	608124004400	07/19/2009	07/21/2009	2	2
Jack St Malo	St Malo	001	608124002900	08/17/2007	02/05/2008	172	26
Jack St Malo	St Malo	001	608124012800	08/17/2019	09/01/2019	15	14
Jack St Malo	St Malo	001	608124012801	09/09/2019	09/14/2019	5	22
Jack St Malo	Jack	001	608124000400	09/21/2000	11/20/2000	60	39
Jack St Malo	St Malo	001	608124012802	09/29/2019	11/09/2019	41	8
Jack St Malo	St Malo	001	608124012803	11/16/2019	11/21/2019	5	10
Jack St Malo	Jack	001	608124000401	11/27/2000	01/06/2001	40	21
Jack St Malo	St Malo	002	608124002701	04/30/2008	05/28/2008	28	11
Jack St Malo	St Malo	002	608124002702	06/04/2008	06/06/2008	2	9
Jack St Malo	St Malo	002	608124002703	06/12/2008	10/10/2008	120	47
Jack St Malo	Jack	002	608124001100	07/06/2003	10/13/2003	99	37
Jack St Malo	St Malo	002	608124002700	08/06/2007	04/20/2008	19	14
Jack St Malo	Jack	003	608124003101	08/23/2008	10/18/2008	56	34
Jack St Malo	Jack	003	608124003100	12/21/2007	08/03/2008	226	21
Jack St Malo	Jack	IS001	608124013500	12/26/2020	02/09/2021	45	144
Jack St Malo	Jack	IS003	608124013300	08/14/2020	11/29/2020	107	144
Jack St Malo	St Malo	PN001	608124005300	11/21/2011	10/16/2012	72	116
Jack St Malo	St Malo	PN002	608124005400	11/22/2011	07/07/2015	61	80
Jack St Malo	St Malo	PN003	608124005500	11/23/2011	03/17/2015	65	25
Jack St Malo	St Malo	PN005	608124013200	05/17/2020	06/12/2020	26	9
Jack St Malo	St Malo	PN005	608124013201	06/19/2020	07/02/2020	13	10
Jack St Malo	St Malo	PN005	608124013202	07/11/2020	09/30/2020	81	125
Jack St Malo	St Malo	PN007	608124010700	10/29/2015	11/22/2015	24	7
Jack St Malo	St Malo	PN007	608124010701	11/27/2015	12/26/2015	29	94
Jack St Malo	St Malo	PS001	608124005201	08/10/2015	09/29/2015	50	114
Jack St Malo	St Malo	PS001	608124005202	09/12/2016	09/20/2016	8	47
Jack St Malo	St Malo	PS001	608124005203	10/30/2016	11/29/2016	30	66
Jack St Malo	St Malo	PS001	608124005200	11/06/2011	08/02/2015	24	14
Jack St Malo	St Malo	PS001	608124005700	12/03/2011	05/04/2013	82	122
Jack St Malo	St Malo	PS002	608124001700	04/22/2005	11/08/2005	200	187
Jack St Malo	St Malo	PS002	608124001701	10/05/2012	10/27/2012	22	89
Jack St Malo	St Malo	PS002	608124011400	12/17/2016	02/12/2017	57	87
Jack St Malo	St Malo	PS003	608124012602	—	—	0	0
Jack St Malo	St Malo	PS003	608124012600	03/26/2019	04/14/2019	19	7
Jack St Malo	St Malo	PS003	608124012601	04/19/2019	05/25/2019	36	174
Jack St Malo	St Malo	PS003	608124005600	11/26/2011	03/16/2012	111	248
Jack St Malo	St Malo	PS004	608124005100	04/03/2012	05/12/2012	39	8
Jack St Malo	St Malo	PS004	608124005101	05/17/2012	05/18/2012	1	9
Jack St Malo	St Malo	PS004	608124005102	05/24/2012	05/27/2012	3	7
Jack St Malo	St Malo	PS004	608124005103	06/02/2012	07/04/2012	32	102
Jack St Malo	St Malo	PS004	608124005800	12/05/2011	09/21/2015	44	105
Jack St Malo	St Malo	PS005	608124011800	05/16/2017	06/11/2017	26	7
Jack St Malo	St Malo	PS005	608124011801	06/15/2017	09/04/2017	81	113
Jack St Malo	St Malo	PS005	608124005000	11/13/2011	02/16/2012	95	245
Jack St Malo	St Malo	PS006	608124013600	04/11/2021	05/27/2021	46	71
Jack St Malo	St Malo	PS006	608124012500	12/23/2018	02/10/2019	49	171
Jack St Malo	St Malo	PS007	608124012200	01/05/2018	02/21/2018	47	105
Jack St Malo	St Malo	PS007	608124011500	01/18/2017	03/20/2017	61	13
Jack St Malo	St Malo	PS007	608124011501	03/27/2017	03/30/2017	3	10
Jack St Malo	St Malo	PS007	608124011502	04/05/2017	04/07/2017	2	16
Jack St Malo	St Malo	PS007	608124011503	04/17/2017	04/19/2017	2	11
Jack St Malo	St Malo	PS007	608124011504	04/23/2017	05/31/2017	38	140
Jack St Malo	St Malo	PS008	608124011600	01/26/2017	04/15/2018	15	7
Jack St Malo	St Malo	PS008	608124011601	04/21/2018	04/23/2018	2	6
Jack St Malo	St Malo	PS008	608124011602	04/27/2018	05/02/2018	5	11
Jack St Malo	St Malo	PS008	608124011603	05/07/2018	05/14/2018	7	13
Jack St Malo	St Malo	PS008	608124011604	05/20/2018	05/26/2018	6	8
Jack St Malo	St Malo	PS008	608124011605	05/30/2018	07/17/2018	48	47
Jack St Malo	St Malo	PS008	608124011606	08/31/2018	09/07/2018	7	103
Jack St Malo	St Malo	PS008	608124015100	10/14/2023	11/21/2023	38	56
Jack St Malo	St Malo	PS009	608124012804	11/28/2019	12/02/2019	4	132
Jack St Malo	St Malo	PS011	608124014600	04/21/2023	06/15/2023	55	70
Jack St Malo	St Malo	PS012	608124015500	—	—	0	0
Jack St Malo	St Malo	PS012	608124015501	—	—	0	0
Jack St Malo	St Malo	PS012	608124015502	—	—	0	0
Jack St Malo	St Malo	PS012	608124015503	—	—	0	0
Jack St Malo	St Malo	PS012	608124015504	—	—	0	0
Jack St Malo	St Malo	PS013	608124015300	—	—	0	0
Jack St Malo	St Malo	PS014	608124015400	—	—	0	0
Julia	Julia	DC101	608124009400	07/10/2014	11/03/2014	116	143
Julia	Julia	JU102	608124003301	01/20/2015	02/26/2015	37	173
Julia	Julia	JU102	608124003300	02/17/2008	05/23/2008	96	80
Julia	Julia	JU103	608124010200	10/21/2015	01/12/2016	83	29
Julia	Julia	JU104	608124010800	02/13/2016	06/30/2016	138	130
Julia	Julia	JU105	608124011101	01/24/2017	05/26/2017	122	100
Julia	Julia	JU105	608124011100	09/03/2016	10/25/2016	52	96
Julia	Julia	JU106	608124012700	05/10/2019	09/26/2019	139	38
Julia	Julia	JU106	608124012701	10/29/2019	11/17/2019	19	96
Kaskida	Kaskida	001	608084001100	01/24/2006	02/18/2006	25	8
Kaskida	Kaskida	001	608084001101	02/22/2006	03/31/2006	37	16
Kaskida	Kaskida	001	608084001102	04/14/2006	05/22/2006	38	46
Kaskida	Kaskida	001	608084001104	04/16/2008	06/02/2008	47	26
Kaskida	Kaskida	001	608084001103	12/10/2006	12/24/2006	14	50
Kaskida	Kaskida	002	608084002701	02/28/2013	03/31/2013	31	84
Kaskida	Kaskida	002	608084002700	11/02/2011	12/31/2012	364	55
North Platte	North Platte	001	608074030500	07/03/2012	08/17/2012	45	37
North Platte	North Platte	001	608074030501	09/20/2012	11/26/2012	67	27
North Platte	North Platte	001	608074030502	12/21/2012	01/13/2013	23	15
North Platte	North Platte	002	608074031400	02/03/2015	03/22/2015	47	15
North Platte	North Platte	003	608074031500	04/22/2015	10/20/2015	181	26
North Platte	North Platte	003	608074031501	11/13/2015	12/10/2015	27	17
North Platte	North Platte	003	608074031502	12/25/2015	02/09/2016	46	31
North Platte	North Platte	004	608074032001	01/14/2017	03/05/2017	50	28
North Platte	North Platte	004	608074032002	04/10/2017	04/15/2017	5	22
North Platte	North Platte	004	608074032003	05/06/2017	06/02/2017	27	16
North Platte	North Platte	004	608074032000	09/05/2016	12/17/2016	103	29
North Platte	North Platte	005	608074032800	02/03/2023	03/29/2023	54	33
North Platte	North Platte	SP201	608074033000	—	—	0	0
North Platte	North Platte	SP202	608074033100	—	—	0	0
Shenandoah	Shenandoah	001	608124003400	06/04/2008	06/23/2008	19	13
Shenandoah	Shenandoah	001	608124007500	06/29/2012	09/06/2012	69	8
Shenandoah	Shenandoah	001	608124003401	07/03/2008	10/20/2008	109	27
Shenandoah	Shenandoah	001	608124003402	11/11/2008	01/22/2009	72	74
Shenandoah	Shenandoah	002	608124009300	05/29/2014	11/08/2014	163	36
Shenandoah	Shenandoah	002	608124007900	09/17/2012	01/29/2013	134	49
Shenandoah	Shenandoah	002	608124009301	12/07/2014	12/19/2014	12	14
Shenandoah	Shenandoah	003	608124011301	02/19/2017	02/26/2017	7	14
Shenandoah	Shenandoah	003	608124010100	05/26/2015	08/28/2015	94	16
Shenandoah	Shenandoah	003	608124010101	09/08/2015	10/16/2015	38	16
Shenandoah	Shenandoah	003	608124010102	10/26/2015	12/14/2015	49	13
Shenandoah	Shenandoah	003	608124011300	12/16/2016	02/07/2017	53	19
Shenandoah	Shenandoah	003	608124010103	12/21/2015	01/02/2016	12	15
Shenandoah	Shenandoah	SA005	608124010900	03/14/2016	07/05/2016	113	44
Shenandoah	Shenandoah	SA006	608124011302	03/08/2017	03/20/2017	12	32
Shenandoah	Shenandoah	SA007	608124014000	—	—	0	0
Shenandoah	Shenandoah	SA007	608124014001	—	—	0	0
Shenandoah	Shenandoah	SA007	608124014002	—	—	0	0
Shenandoah	Shenandoah	SA007	608124014003	—	—	0	0
Shenandoah	Shenandoah	SA008	608124014100	11/22/2022	03/19/2023	117	175
Shenandoah	Shenandoah	SA009	608124014400	11/28/2022	05/12/2023	165	186
Shenandoah	Shenandoah	SA010	608124013900	—	—	0	0
Shenandoah	Shenandoah	SA011	608124015200	—	—	0	0
Stones	Stones	001	608124007700	06/20/2012	10/21/2012	123	49
Stones	Stones	001	608124001500	12/31/2004	03/10/2005	69	52
Stones	Stones	002	608124002200	08/02/2006	08/02/2006	0	13
Stones	Stones	004	608124008700	11/10/2013	01/20/2014	71	24
Stones	Stones	005	608124009200	02/15/2014	03/26/2014	39	4
Stones	Stones	005	608124009201	04/01/2014	06/21/2014	81	12
Stones	Stones	008	608124010500	08/12/2015	08/13/2015	1	15
Stones	Stones	009	608124010300	08/01/2015	08/02/2015	1	10
Stones	Stones	011	608124011000	05/12/2016	07/28/2016	77	24
Stones	Stones	SN105	608124009500	07/24/2014	12/26/2014	155	152
Stones	Stones	SN109	608124009900	03/18/2015	06/05/2015	79	101
Stones	Stones	SN110	608124011001	08/16/2016	09/08/2016	23	112
Stones	Stones	SN114	608124013701	02/04/2022	02/08/2022	4	78
Stones	Stones	SN114	608124013700	08/17/2021	01/20/2022	156	17
Stones	Stones	SN115	608124012900	10/22/2019	04/23/2020	184	51
Stones	Stones	SN206	608124011200	12/08/2016	08/21/2017	78	67
Stones	Stones	SN207	608124011700	04/02/2017	06/03/2017	62	40
Stones	Stones	SN208	608124010400	08/07/2015	02/20/2017	88	117
Stones	Stones	SN213	608124012300	04/06/2018	05/15/2018	39	92
Stones	Stones	SN216	608124013400	12/09/2020	02/27/2021	80	48
Stones	Stones	SN219	608124014301	02/14/2023	02/16/2023	2	50
Stones	Stones	SN219	608124014300	12/19/2022	02/02/2023	45	17
Tiber	Tiber	001	608084001500	03/12/2009	08/15/2009	156	13
Tiber	Tiber	002	608084005500	01/24/2016	03/22/2016	58	23

Provenance

WED figures are computed deterministically from the frozen workbook drilling_and_completion_days.xlsx (BSEE Well Activity Reports, V30 methodology). World Oil April 2026 article figures are transcribed verbatim from World Oil Lower-Tertiary Table 1 (BSEE-derived summary thru Nov 2025) and are held fixed as an external benchmark.