33-20 Ferkingstad

API 4006320066 · Harding County, South Dakota · State Line field

ProducingOil

API

4006320066

Operator

Luff Exploration Co.

County

Harding

Field

State Line

Location

NWSE Sec 20 Twp 023N Rng 05E

Permit

682

Production

359 monthly filings with South Dakota, Jul 1973 to May 2003. Each product is in its own unit and the four are never added.

Cumulative oil

585,991 bbl

Cumulative gas

199,297 MCF

Cumulative water

655,486 bbl

Period	Oil (bbl)	Gas (MCF)	Water (bbl)	Days
May 2003	153	61	2,362	19
Apr 2003	243	97	3,665	30
Mar 2003	140	56	2,403	20
Feb 2003	137	55	2,581	20
Jan 2003	103	41	2,237	19
Dec 2002	331	132	28	19
Nov 2002	554	221	83	30
Oct 2002	547	219	70	31
Sep 2002	541	0	60	29
Aug 2002	569	0	62	31
Jul 2002	577	0	62	31
Jun 2002	556	0	60	30
May 2002	600	0	62	31
Apr 2002	585	0	90	30
Mar 2002	590	0	62	31
Feb 2002	546	0	56	28
Jan 2002	624	0	31	31
Dec 2001	609	0	31	31
Nov 2001	591	0	30	30
Oct 2001	608	0	62	31
Sep 2001	585	0	60	30
Aug 2001	592	0	62	31
Jul 2001	603	0	62	31
Jun 2001	600	0	30	30
May 2001	602	0	29	29
Apr 2001	621	0	30	30
Mar 2001	626	0	31	31
Feb 2001	550	0	28	28
Jan 2001	632	0	31	31
Dec 2000	637	0	31	30
Nov 2000	607	0	45	30
Oct 2000	633	0	62	31
Sep 2000	627	0	60	30
Aug 2000	469	0	124	20
Jul 2000	686	0	62	22
Jun 2000	650	0	90	30
May 2000	694	0	124	31
Apr 2000	667	0	90	30
Mar 2000	679	0	31	31
Feb 2000	664	0	116	29
Jan 2000	725	0	84	28
Dec 1999	672	0	31	31
Nov 1999	940	0	60	30
Oct 1999	712	0	62	31
Sep 1999	660	0	90	31
Aug 1999	690	0	93	31
Jul 1999	680	0	93	31
Jun 1999	663	0	60	30
May 1999	691	0	62	31
Apr 1999	677	0	30	30
Mar 1999	708	250	79	29
Feb 1999	591	250	52	28
Jan 1999	671	250	55	31
Dec 1998	676	250	52	31
Nov 1998	676	250	54	30
Oct 1998	719	250	58	31
Sep 1998	661	250	50	30
Aug 1998	704	250	65	31
Jul 1998	671	250	60	31
Jun 1998	677	250	60	30
May 1998	728	250	50	31
Apr 1998	676	250	48	30
Mar 1998	723	250	61	31
Feb 1998	652	250	47	28
Jan 1998	718	250	69	28
Dec 1997	716	250	71	31
Nov 1997	693	250	61	30
Oct 1997	804	250	71	31
Sep 1997	590	250	47	23
Aug 1997	716	250	66	31
Jul 1997	714	250	76	31
Jun 1997	689	250	76	30
May 1997	702	250	71	31
Apr 1997	718	250	68	30
Mar 1997	731	250	68	28
Feb 1997	652	250	59	28
Jan 1997	738	250	73	31
Dec 1996	712	250	77	31
Nov 1996	703	250	85	29
Oct 1996	729	250	71	31
Sep 1996	692	250	89	30
Aug 1996	719	250	79	31
Jul 1996	735	250	88	31
Jun 1996	703	250	86	30
May 1996	729	250	93	30
Apr 1996	712	250	84	30
Mar 1996	835	250	77	31
Feb 1996	678	250	73	29
Jan 1996	633	250	151	27
Dec 1995	735	250	74	31
Nov 1995	718	250	78	30
Oct 1995	736	250	97	31
Sep 1995	742	240	92	30
Aug 1995	712	248	220	31
Jul 1995	665	248	71	31
Jun 1995	666	240	52	30
May 1995	681	248	79	31
Apr 1995	709	240	67	30
Mar 1995	722	248	75	31
Feb 1995	628	224	73	28
Jan 1995	774	248	106	31
Dec 1994	827	248	71	31
Nov 1994	601	240	64	30
Oct 1994	783	248	58	31
Sep 1994	614	208	66	26
Aug 1994	664	248	48	31
Jul 1994	675	248	83	31
Jun 1994	645	232	84	29
May 1994	770	248	78	31
Apr 1994	703	240	74	30
Mar 1994	778	248	78	31
Feb 1994	672	216	82	27
Jan 1994	758	248	97	31
Dec 1993	760	248	82	31
Nov 1993	739	240	59	30
Oct 1993	776	248	82	31
Sep 1993	736	240	73	30
Aug 1993	762	248	78	31
Jul 1993	775	248	88	31
Jun 1993	732	240	81	30
May 1993	749	248	96	31
Apr 1993	736	240	103	30
Mar 1993	744	248	90	31
Feb 1993	695	224	70	28
Jan 1993	759	248	104	31
Dec 1992	781	248	82	31
Nov 1992	762	240	79	30
Oct 1992	763	248	92	30
Sep 1992	739	240	93	30
Aug 1992	779	248	102	31
Jul 1992	741	248	104	31
Jun 1992	759	309	102	30
May 1992	782	319	104	31
Apr 1992	743	309	68	30
Mar 1992	708	319	95	31
Feb 1992	722	288	93	29
Jan 1992	775	319	113	31
Dec 1991	772	319	103	31
Nov 1991	765	309	106	30
Oct 1991	758	319	75	31
Sep 1991	728	309	84	30
Aug 1991	762	319	102	31
Jul 1991	814	319	106	27
Jun 1991	687	309	101	28
May 1991	777	319	93	31
Apr 1991	746	309	104	30
Mar 1991	763	319	101	31
Feb 1991	675	288	92	28
Jan 1991	799	319	119	31
Dec 1990	747	319	94	28
Nov 1990	738	312	105	30
Oct 1990	754	305	85	29
Sep 1990	755	273	113	26
Aug 1990	753	315	120	30
Jul 1990	758	284	126	27
Jun 1990	749	273	111	26
May 1990	748	274	120	29
Apr 1990	741	283	107	30
Mar 1990	766	293	120	31
Feb 1990	682	245	95	26
Jan 1990	764	283	154	31
Dec 1989	776	293	106	31
Nov 1989	734	283	126	30
Oct 1989	767	293	118	31
Sep 1989	759	283	110	30
Aug 1989	795	293	125	31
Jul 1989	805	293	128	31
Jun 1989	779	283	114	30
May 1989	822	293	126	31
Apr 1989	784	283	118	30
Mar 1989	833	293	116	31
Feb 1989	755	264	104	28
Jan 1989	876	293	121	31
Dec 1988	839	283	113	30
Nov 1988	851	283	101	30
Oct 1988	858	293	106	31
Sep 1988	840	171	101	30
Aug 1988	873	293	115	31
Jul 1988	896	183	110	31
Jun 1988	867	177	100	30
May 1988	915	293	103	31
Apr 1988	890	182	96	30
Mar 1988	886	181	112	31
Feb 1988	880	179	100	29
Jan 1988	934	191	108	31
Dec 1987	960	196	108	31
Nov 1987	952	194	83	30
Oct 1987	1,066	217	125	31
Sep 1987	938	191	95	30
Aug 1987	964	197	86	31
Jul 1987	1,035	211	108	31
Jun 1987	995	203	90	30
May 1987	1,038	212	107	31
Apr 1987	982	200	144	30
Mar 1987	1,056	216	113	31
Feb 1987	949	194	92	28
Jan 1987	1,045	213	153	29
Dec 1986	1,084	221	108	31
Nov 1986	1,092	223	165	31
Oct 1986	948	194	96	31
Sep 1986	989	202	111	30
Aug 1986	1,014	207	125	31
Jul 1986	1,042	213	113	31
Jun 1986	1,016	207	100	30
May 1986	1,047	27	168	31
Apr 1986	1,004	24	118	—
Mar 1986	1,069	29	215	26
Feb 1986	930	22	118	28
Jan 1986	1,018	26	171	31
Dec 1985	1,068	27	166	31
Nov 1985	617	18	138	30
Oct 1985	967	22	85	31
Sep 1985	1,048	24	95	30
Aug 1985	1,086	25	107	31
Jul 1985	1,109	28	150	31
Jun 1985	1,098	25	90	30
May 1985	1,113	28	170	31
Apr 1985	1,138	21	0	30
Mar 1985	1,191	28	140	31
Feb 1985	1,114	420	80	28
Jan 1985	1,177	444	58	31
Dec 1984	1,134	428	240	26
Nov 1984	1,188	448	110	30
Oct 1984	1,206	455	250	31
Sep 1984	1,139	430	100	29
Aug 1984	306	115	2,227	31
Jul 1984	1,316	496	168	31
Jun 1984	1,352	510	161	30
May 1984	1,448	450	114	31
Apr 1984	1,414	440	132	28
Mar 1984	1,519	472	234	31
Feb 1984	1,459	454	126	29
Jan 1984	1,615	502	148	31
Dec 1983	1,743	542	396	31
Nov 1983	1,851	687	188	30
Oct 1983	2,315	859	195	26
Sep 1983	300	111	6,358	22
Aug 1983	726	269	8,959	31
Jul 1983	916	340	8,959	31
Jun 1983	446	165	6,647	31
May 1983	798	296	6,069	30
Apr 1983	1,204	447	8,670	31
Mar 1983	1,278	474	8,959	30
Feb 1983	1,138	1,600	7,020	31
Jan 1983	1,408	1,980	8,060	31
Dec 1982	1,391	1,968	8,060	31
Nov 1982	1,353	1,902	7,800	30
Oct 1982	1,438	2,021	8,060	31
Sep 1982	1,374	1,932	7,800	30
Aug 1982	1,460	2,052	8,060	31
Jul 1982	1,487	2,090	8,060	31
Jun 1982	1,372	1,929	7,540	29
May 1982	1,482	2,084	8,060	31
Apr 1982	966	1,382	5,720	22
Mar 1982	1,077	1,515	6,760	26
Feb 1982	1,306	1,836	7,280	28
Jan 1982	768	1,092	8,060	31
Dec 1981	1,343	250	5,580	30
Nov 1981	1,411	265	5,400	31
Oct 1981	1,475	279	5,580	29
Sep 1981	780	145	4,320	26
Aug 1981	1,281	238	5,580	26
Jul 1981	1,296	241	5,580	29
Jun 1981	1,531	285	5,400	30
May 1981	1,765	328	5,580	31
Apr 1981	763	142	5,220	29
Mar 1981	590	110	4,680	26
Feb 1981	1,242	231	4,680	26
Jan 1981	1,530	285	5,220	29
Dec 1980	1,705	317	5,580	31
Nov 1980	1,716	319	5,400	30
Oct 1980	1,753	326	5,580	31
Sep 1980	1,574	293	5,400	30
Aug 1980	621	116	2,340	13
Jul 1980	1,718	320	5,580	31
Jun 1980	241	46	3,780	21
May 1980	578	290	5,597	30
Apr 1980	768	386	5,417	30
Mar 1980	917	460	5,597	31
Feb 1980	933	472	5,236	29
Jan 1980	1,076	544	5,597	31
Dec 1979	1,064	534	5,056	28
Nov 1979	1,306	656	5,417	30
Oct 1979	1,461	749	5,597	31
Sep 1979	1,489	767	5,417	30
Aug 1979	1,600	803	5,597	31
Jul 1979	1,650	831	5,597	31
Jun 1979	1,196	411	4,060	31
May 1979	1,540	519	5,500	29
Apr 1979	1,344	453	4,729	31
Mar 1979	1,672	564	5,892	30
Feb 1979	1,493	508	5,215	31
Jan 1979	2,012	684	7,021	24
Dec 1978	2,260	771	7,924	31
Nov 1978	2,267	772	7,929	29
Oct 1978	2,623	1,086	6,390	31
Sep 1978	2,309	951	5,724	30
Aug 1978	2,688	1,145	6,730	31
Jul 1978	2,035	861	5,056	24
Jun 1978	2,717	1,154	6,780	30
May 1978	2,817	1,188	6,978	31
Apr 1978	2,853	1,794	6,021	30
Mar 1978	3,091	1,910	6,533	31
Feb 1978	1,173	727	2,441	12
Jan 1978	2,901	1,805	6,060	29
Dec 1977	3,215	2,017	6,769	28
Nov 1977	2,531	1,062	4,606	27
Oct 1977	425	180	779	26
Sep 1977	1,908	809	3,509	26
Aug 1977	3,009	1,270	5,510	26
Jul 1977	3,542	1,502	6,513	29
Jun 1977	3,299	1,401	6,076	28
May 1977	3,910	1,647	7,143	27
Apr 1977	2,253	949	4,118	26
Mar 1977	748	317	1,377	26
Feb 1977	3,213	1,318	5,631	26
Jan 1977	3,922	1,302	5,574	29
Dec 1976	4,333	1,458	6,026	28
Nov 1976	3,518	1,174	4,851	21
Oct 1976	4,705	1,539	6,237	27
Sep 1976	4,670	1,488	6,006	26
Aug 1976	4,503	1,489	6,006	26
Jul 1976	3,461	1,142	3,770	29
Jun 1976	3,824	1,260	2,990	23
May 1976	5,033	3,640	3,640	28
Apr 1976	5,209	1,714	3,770	29
Mar 1976	5,619	1,839	4,030	31
Feb 1976	5,448	1,786	3,770	29
Jan 1976	5,378	1,758	3,770	29
Dec 1975	5,877	1,926	4,030	31
Nov 1975	5,495	1,802	3,640	28
Oct 1975	5,859	2,065	3,900	30
Sep 1975	6,067	1,987	3,900	30
Aug 1975	5,931	1,872	3,900	30
Jul 1975	6,468	2,147	4,030	31
Jun 1975	5,693	1,890	3,640	31
May 1975	6,052	1,920	4,030	30
Apr 1975	6,598	2,022	3,640	31
Mar 1975	7,401	2,432	4,030	30
Feb 1975	6,293	1,915	3,640	31
Jan 1975	7,107	2,332	4,030	31
Dec 1974	7,329	2,362	4,030	31
Nov 1974	7,152	2,309	3,120	30
Oct 1974	7,630	2,467	3,224	31
Sep 1974	7,453	2,422	3,224	30
Aug 1974	7,512	2,450	3,224	31
Jul 1974	8,001	2,608	2,833	31
Jun 1974	7,330	2,377	2,790	30
May 1974	8,289	2,680	3,007	31
Apr 1974	8,302	1,829	1,710	30
Mar 1974	8,923	1,961	1,767	31
Feb 1974	8,365	1,837	1,652	28
Jan 1974	7,232	1,582	1,392	24
Dec 1973	9,538	2,308	1,302	31
Nov 1973	10,165	3,531	841	29
Oct 1973	8,790	1,942	638	29
Sep 1973	6,699	1,476	87	29
Aug 1973	6,514	152	207	31
Jul 1973	1,388	315	35	5

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

Formation tops

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

Formation	Top (ft)	Age
Greenhorn Limestone	3,712	Cretaceous
Fall River Sandstone	4,677	Cretaceous
Piper Formation	5,530	Triassic
Spearfish Formation	5,747	Triassic/Permian
Pine Salt, Spearfish Formation	5,786	Permian
Minnekahta Limestone	6,104	Permian
Opeche Shale	6,158	Permian
Minnelusa Formation	6,222	Permian/Pennsylvanian
Charles Formation	6,858	Mississippian
Mission Canyon Limestone	7,330	Mississippian
Lodgepole Limestone	7,704	Mississippian
Devonian undifferentiated	8,170	Devonian
Interlake Dolomite	8,399	Silurian
Stony Mountain Formation	8,745	Ordovician
Red River Formation	8,902	Ordovician
Unit A, Red River Formation	8,943	Ordovician
Unit B, Red River Formation	9,004	Ordovician
Unit C, Red River Formation	9,064	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

ProducingOil

Spudded

1973-06-15

Completed

1973-07-10

Measured depth

9,235 ft

True vertical depth

9,235 ft

Interval

Formation	Perforated (ft)
Unit C, Red River Formation	9,118–9,132

Location

45.940509, -103.528151

45.94051, -103.52815 · 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.