Apache 8-27 Clarkson

API 4006320502 · Harding County, South Dakota · Buffalo field

InjectingWater Injection

API

4006320502

Operator

Citation Oil and Gas Corp.

County

Harding

Field

Buffalo

Location

SENE Sec 27 Twp 021N Rng 03E

Permit

1542

Production

199 monthly filings with South Dakota, Jan 1994 to Jul 2010. Each product is in its own unit and the four are never added.

Cumulative oil

128,473 bbl

Cumulative gas

8,658 MCF

Cumulative water

645,019 bbl

Period	Oil (bbl)	Gas (MCF)	Water (bbl)	Days
Jul 2010	0	0	0	—
Jun 2010	—	—	—	—
May 2010	—	—	—	—
Apr 2010	185	56	4,898	28
Mar 2010	206	62	5,420	31
Feb 2010	196	56	4,959	28
Jan 2010	156	52	4,765	26
Dec 2009	151	52	4,634	26
Nov 2009	202	60	5,402	30
Oct 2009	208	62	5,527	31
Sep 2009	203	60	5,392	30
Aug 2009	210	62	5,572	31
Jul 2009	192	62	5,380	31
Jun 2009	205	60	5,383	30
May 2009	211	62	5,431	31
Apr 2009	205	60	5,362	30
Mar 2009	161	60	5,317	31
Feb 2009	95	40	2,698	20
Jan 2009	226	62	5,615	31
Dec 2008	223	62	5,732	31
Nov 2008	169	54	4,802	27
Oct 2008	228	62	5,665	31
Sep 2008	225	60	5,495	30
Aug 2008	198	62	171	31
Jul 2008	133	34	3,005	31
Jun 2008	225	60	5,363	30
May 2008	101	0	3,408	18
Apr 2008	243	60	5,462	30
Mar 2008	250	62	5,543	31
Feb 2008	105	36	3,339	18
Jan 2008	263	62	5,537	31
Dec 2007	264	62	5,441	31
Nov 2007	252	60	5,289	30
Oct 2007	266	62	5,472	31
Sep 2007	236	60	5,614	30
Aug 2007	200	62	4,134	25
Jul 2007	246	62	5,178	31
Jun 2007	271	60	5,319	30
May 2007	280	62	5,498	31
Apr 2007	282	60	5,306	30
Mar 2007	289	62	5,447	31
Feb 2007	268	56	4,974	28
Jan 2007	294	62	5,545	31
Dec 2006	273	62	4,680	31
Nov 2006	262	60	4,440	30
Oct 2006	279	62	4,641	31
Sep 2006	162	44	3,372	30
Aug 2006	266	62	4,519	31
Jul 2006	274	62	4,599	31
Jun 2006	267	60	4,355	30
May 2006	287	62	4,652	31
Apr 2006	194	50	3,673	25
Mar 2006	284	62	4,597	31
Feb 2006	264	56	4,175	28
Jan 2006	289	60	4,623	31
Dec 2005	219	52	3,790	26
Nov 2005	293	60	4,451	30
Oct 2005	810	62	4,603	31
Sep 2005	301	60	4,451	30
Aug 2005	307	62	4,592	31
Jul 2005	316	62	4,619	31
Jun 2005	305	60	4,407	30
May 2005	308	62	4,469	31
Apr 2005	317	60	4,450	30
Mar 2005	329	62	4,530	31
Feb 2005	299	56	4,076	28
Jan 2005	333	62	4,521	31
Dec 2004	340	62	4,529	31
Nov 2004	323	60	4,371	30
Oct 2004	338	62	4,455	31
Sep 2004	322	60	4,313	30
Aug 2004	345	62	4,528	31
Jul 2004	347	62	4,523	31
Jun 2004	296	58	4,197	29
May 2004	314	60	4,399	30
Apr 2004	302	52	3,586	26
Mar 2004	357	62	4,308	31
Feb 2004	346	58	4,053	29
Jan 2004	366	62	4,380	31
Dec 2003	387	62	4,466	31
Nov 2003	373	60	4,310	30
Oct 2003	378	62	4,403	31
Sep 2003	380	62	4,281	30
Aug 2003	394	62	4,322	31
Jul 2003	349	60	4,088	30
Jun 2003	408	60	4,089	30
May 2003	421	62	4,267	31
Apr 2003	416	60	4,143	30
Mar 2003	323	52	3,574	26
Feb 2003	400	56	3,849	28
Jan 2003	446	62	4,227	31
Dec 2002	450	62	4,106	31
Nov 2002	442	60	3,870	30
Oct 2002	436	62	4,084	31
Sep 2002	441	60	3,927	30
Aug 2002	478	62	4,133	31
Jul 2002	447	62	4,042	31
Jun 2002	463	60	3,660	30
May 2002	456	62	4,013	31
Apr 2002	488	60	3,825	30
Mar 2002	493	62	3,938	31
Feb 2002	446	56	3,491	28
Jan 2002	497	62	3,815	31
Dec 2001	492	62	3,847	31
Nov 2001	493	60	3,648	30
Oct 2001	510	62	3,791	31
Sep 2001	492	60	3,642	30
Aug 2001	489	62	3,640	31
Jul 2001	506	62	3,705	31
Jun 2001	496	60	3,546	30
May 2001	498	62	3,734	31
Apr 2001	528	60	3,529	30
Mar 2001	544	62	3,651	31
Feb 2001	506	56	3,393	28
Jan 2001	556	62	3,724	31
Dec 2000	567	62	3,803	31
Nov 2000	552	60	3,562	30
Oct 2000	593	62	3,717	31
Sep 2000	538	60	3,683	30
Aug 2000	606	62	3,781	31
Jul 2000	611	62	3,983	31
Jun 2000	586	60	3,736	30
May 2000	599	62	3,793	31
Apr 2000	622	60	3,626	30
Mar 2000	668	62	3,773	31
Feb 2000	528	58	3,332	29
Jan 2000	686	62	3,702	31
Dec 1999	681	62	3,760	31
Nov 1999	674	60	3,518	30
Oct 1999	692	62	3,680	31
Sep 1999	658	60	3,309	30
Aug 1999	742	62	3,378	31
Jul 1999	747	62	3,461	31
Jun 1999	767	60	3,656	30
May 1999	416	54	2,685	27
Apr 1999	746	60	3,279	30
Mar 1999	799	62	3,231	31
Feb 1999	721	56	2,787	28
Jan 1999	848	62	3,007	31
Dec 1998	859	62	2,993	31
Nov 1998	785	60	2,713	30
Oct 1998	736	62	2,643	31
Sep 1998	783	60	2,549	30
Aug 1998	810	62	2,640	31
Jul 1998	840	62	2,524	31
Jun 1998	892	60	2,474	30
May 1998	955	62	2,486	31
Apr 1998	949	60	2,352	30
Mar 1998	948	60	2,395	30
Feb 1998	880	0	1,988	27
Jan 1998	1,040	0	2,260	31
Dec 1997	1,093	0	2,168	31
Nov 1997	877	0	1,936	30
Oct 1997	976	0	1,932	31
Sep 1997	1,005	0	1,796	30
Aug 1997	1,053	0	1,851	31
Jul 1997	727	0	1,493	24
Jun 1997	1,006	0	1,617	30
May 1997	1,147	0	1,666	31
Apr 1997	1,037	0	1,478	28
Mar 1997	1,134	0	1,503	29
Feb 1997	1,060	0	1,262	26
Jan 1997	1,227	0	1,377	31
Dec 1996	1,277	0	1,272	31
Nov 1996	1,196	0	1,120	29
Oct 1996	1,274	0	1,088	31
Sep 1996	1,245	0	910	30
Aug 1996	1,322	0	852	31
Jul 1996	1,311	0	734	31
Jun 1996	1,332	0	665	30
May 1996	1,422	0	572	31
Apr 1996	1,436	0	492	30
Mar 1996	1,568	0	398	31
Feb 1996	1,562	0	295	29
Jan 1996	1,739	0	257	31
Dec 1995	1,733	0	239	31
Nov 1995	1,662	0	219	30
Oct 1995	1,619	0	215	31
Sep 1995	1,518	0	197	30
Aug 1995	1,563	0	371	31
Jul 1995	1,546	0	207	31
Jun 1995	1,459	0	191	30
May 1995	1,497	0	201	31
Apr 1995	1,385	0	187	30
Mar 1995	1,410	0	198	31
Feb 1995	1,263	0	183	28
Jan 1995	1,441	0	190	31
Dec 1994	1,433	0	213	31
Nov 1994	1,422	0	208	30
Oct 1994	1,510	0	212	31
Sep 1994	1,496	0	235	30
Aug 1994	1,621	0	240	31
Jul 1994	1,301	0	186	22
Jun 1994	1,583	0	265	30
May 1994	1,689	0	321	31
Apr 1994	1,718	0	355	30
Mar 1994	2,009	0	426	31
Feb 1994	1,999	0	418	23
Jan 1994	1,367	0	155	30

A dash is a period the well filed with no volume for that product.

Injection

32 monthly filings with South Dakota, Jan 1994 to Jun 2026. 31 of them carry a figure; the rest are months South Dakota filed empty.

Well type

Water Injection

Cumulative fluid injected

97,192 bbl

Month	Fluid injected (bbl)	Max pressure (psi)	Avg pressure (psi)	Days
Jun 2026	1,426	2,000	573	30
May 2026	2,680	1,950	1,031	31
Apr 2026	1,914	1,950	685	30
Mar 2026	3,391	2,000	1,087	31
Feb 2026	2,758	1,975	993	18
Jan 2026	1,073	1,900	484	31
Dec 2025	1,608	1,975	692	31
Nov 2025	1,649	1,975	596	30
Oct 2025	1,239	1,950	531	31
Sep 2025	3,272	1,950	915	30
Aug 2025	1,035	1,975	690	31
Jul 2025	1,032	1,975	613	31
Jun 2025	1,137	1,950	1,012	30
May 2025	2,158	2,000	1,477	29
Apr 2025	2,676	1,975	1,411	30
Mar 2025	2,979	1,975	1,352	21
Feb 2025	3,084	1,950	1,202	20
Jan 2025	4,311	1,900	1,579	31
Dec 2024	4,535	1,950	1,525	31
Nov 2024	4,281	1,950	1,355	27
Oct 2024	4,383	1,900	1,247	31
Sep 2024	3,605	1,900	1,095	30
Aug 2024	1,803	1,900	587	31
Jul 2024	1,424	1,950	635	31
Jun 2024	7,104	2,000	1,691	30
May 2024	8,567	2,000	1,615	31
Apr 2024	10,798	2,000	1,665	30
Mar 2024	5,273	1,900	731	31
Feb 2024	4,246	1,800	583	29
Jan 2024	1,286	600	287	31
Dec 2023	465	375	238	3
Jan 1994	—	—	—	—

A dash is a month the well filed with no figure in that column. An average pressure is shown only for a month the well filed once; where it filed twice the two averages cannot be recombined into one, so none is shown.

Formation tops

South Dakota records 18 formations for this well, shallowest first.

Formation	Top (ft)	Age
Greenhorn Limestone	3,353	Cretaceous
Dakota Mud	4,412	Cretaceous
Morrison Formation	4,574	Jurassic
Spearfish Formation	5,469	Triassic/Permian
Pine Salt, Spearfish Formation	5,612	Permian
Minnekahta Limestone	5,878	Permian
Opeche Shale	5,917	Permian
Minnelusa Formation	5,995	Permian/Pennsylvanian
Charles Formation	6,550	Mississippian
Mission Canyon Limestone	6,990	Mississippian
Lodgepole Limestone	7,342	Mississippian
Duperow Formation	7,792	Devonian
Interlake Dolomite	7,940	Silurian
Stony Mountain Formation	8,182	Ordovician
Red River Formation	8,339	Ordovician
Unit A, Red River Formation	8,348	Ordovician
Unit B, Red River Formation	8,374	Ordovician
Unit C, Red River Formation	8,429	Ordovician

A dash is a formation South Dakota records for this well without a depth.

Completion

South Dakota files 1 completion report for this well.

Vertical Well

InjectingWater Injection

Spudded

1993-11-21

Completed

1994-01-11

Measured depth

8,435 ft

True vertical depth

8,435 ft

Interval

Formation	Perforated (ft)
Unit B, Red River Formation	8,374–8,390

Location

45.758125, -103.731686

45.75812, -103.73169 · Surface location as filed with South Dakota⌘ or Ctrl + scroll to zoom

Every well in Harding County, South Dakota

South Dakota state record, from SD_wells_SDOILexport_Export__wells_Table_4_Web.parquet. Corpus built 2026-09-11.