Luff I-18H Stearns

API 400632040701 · Harding County, South Dakota · Buffalo field

InjectingWater Injection

API

400632040701

Operator

Luff Exploration Co.

County

Harding

Field

Buffalo

Location

NESE Sec 18 Twp 022N Rng 04E

Permit

1658

Production

8 monthly filings with South Dakota, Jan 2001 to Aug 2001. Each product is in its own unit and the four are never added.

Cumulative oil

7,380 bbl

Cumulative gas

2,394 MCF

Cumulative water

39,893 bbl

Period	Oil (bbl)	Gas (MCF)	Water (bbl)	Days
Aug 2001	0	0	0	—
Jul 2001	868	502	4,021	23
Jun 2001	1,240	711	6,612	29
May 2001	484	277	2,451	13
Apr 2001	1,350	774	6,799	30
Mar 2001	1,423	47	6,870	31
Feb 2001	1,354	42	6,476	28
Jan 2001	661	41	6,664	27

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

Injection

237 monthly filings with South Dakota, Jul 2001 to Jun 2026. 236 of them carry a figure; the rest are months South Dakota filed empty.

Well type

Water Injection

Cumulative fluid injected

5,035,830 bbl

Month	Fluid injected (bbl)	Max pressure (psi)	Avg pressure (psi)	Days
Jun 2026	20,402	1,489	1,479	30
May 2026	21,286	1,495	1,483	31
Apr 2026	20,554	1,492	1,471	30
Mar 2026	21,336	1,450	1,450	31
Feb 2026	19,130	1,475	1,451	28
Jan 2026	20,175	1,450	1,394	31
Dec 2025	20,715	1,564	1,492	31
Nov 2025	21,736	1,550	1,550	30
Oct 2025	23,022	1,575	1,567	31
Sep 2025	22,558	1,600	1,572	30
Aug 2025	23,220	1,600	1,541	31
Jul 2025	22,269	1,520	1,495	31
Jun 2025	21,630	1,500	1,500	30
May 2025	22,504	1,500	1,500	31
Apr 2025	21,597	1,500	1,500	30
Mar 2025	21,698	1,500	1,488	31
Feb 2025	19,725	1,600	1,528	28
Jan 2025	24,305	1,681	1,641	31
Dec 2024	24,234	1,672	1,622	31
Nov 2024	24,001	1,700	1,660	30
Oct 2024	26,578	1,700	1,691	31
Sep 2024	23,325	1,700	1,473	30
Aug 2024	20,257	1,300	1,296	31
Jul 2024	21,544	1,475	1,376	31
Jun 2024	21,774	1,500	1,453	30
May 2024	22,405	1,450	1,450	31
Apr 2024	22,444	1,450	1,450	30
Mar 2024	23,322	1,450	1,442	31
Feb 2024	21,090	1,450	1,406	29
Jan 2024	22,936	1,450	1,447	31
Dec 2023	22,820	1,400	1,383	31
Nov 2023	21,046	1,450	1,371	30
Oct 2023	22,032	1,500	1,461	31
Sep 2023	20,992	1,500	1,499	30
Aug 2023	22,318	1,550	1,533	31
Jul 2023	23,378	1,573	1,525	31
Jun 2023	22,734	1,550	1,518	30
May 2023	23,724	1,500	1,500	31
Apr 2023	23,599	1,525	1,511	30
Mar 2023	23,938	1,600	1,569	31
Feb 2023	19,662	1,600	1,574	28
Jan 2023	21,800	1,575	1,512	31
Dec 2022	20,354	1,600	1,490	29
Nov 2022	22,954	1,600	1,600	30
Oct 2022	24,705	1,600	1,600	31
Sep 2022	24,828	1,600	1,600	30
Aug 2022	24,997	1,600	1,600	31
Jul 2022	24,011	1,600	1,600	31
Jun 2022	21,995	1,600	1,600	30
May 2022	23,031	1,600	1,595	31
Apr 2022	18,895	1,600	1,504	30
Mar 2022	23,637	1,650	1,611	31
Feb 2022	21,463	1,650	1,617	28
Jan 2022	22,646	1,650	1,639	31
Dec 2021	22,502	1,650	1,643	31
Nov 2021	21,862	1,650	1,649	30
Oct 2021	23,303	1,650	1,646	31
Sep 2021	22,404	1,650	1,624	30
Aug 2021	23,224	1,600	1,593	31
Jul 2021	22,400	1,600	1,578	31
Jun 2021	20,828	1,575	1,544	30
May 2021	22,663	1,600	1,562	31
Apr 2021	22,023	1,600	1,575	30
Mar 2021	22,905	1,600	1,583	31
Feb 2021	20,699	1,600	1,575	28
Jan 2021	23,552	1,600	1,557	31
Dec 2020	25,055	1,550	1,516	31
Nov 2020	21,830	1,500	1,500	30
Oct 2020	23,424	1,550	1,489	31
Sep 2020	21,164	1,500	1,399	30
Aug 2020	23,164	1,475	1,411	31
Jul 2020	22,368	1,350	1,304	31
Jun 2020	16,957	1,200	1,013	30
May 2020	14,483	1,100	1,003	31
Apr 2020	18,422	1,475	1,335	30
Mar 2020	21,634	1,450	1,412	31
Feb 2020	20,293	1,450	1,428	29
Jan 2020	21,401	1,425	1,412	31
Dec 2019	23,413	1,450	1,429	31
Nov 2019	22,486	1,450	1,414	30
Oct 2019	23,822	1,400	1,400	31
Sep 2019	22,905	1,450	1,403	30
Aug 2019	22,967	1,450	1,400	31
Jul 2019	26,112	1,600	1,497	31
Jun 2019	24,370	1,500	1,422	30
May 2019	27,501	1,500	1,447	31
Apr 2019	25,858	1,450	1,408	30
Mar 2019	24,192	1,450	1,391	31
Feb 2019	24,084	1,500	1,391	28
Jan 2019	27,223	1,400	1,358	31
Dec 2018	26,576	1,450	1,362	31
Nov 2018	12,338	1,525	1,485	30
Oct 2018	28,688	1,500	1,463	31
Sep 2018	27,728	1,450	1,431	30
Aug 2018	29,759	1,450	1,411	31
Jul 2018	32,060	1,340	1,340	31
Jun 2018	25,627	1,325	1,183	30
May 2018	32,237	1,350	1,306	31
Apr 2018	31,203	1,300	1,291	30
Mar 2018	29,994	1,250	1,157	30
Feb 2018	27,603	1,200	1,157	28
Jan 2018	30,723	1,150	1,118	31
Dec 2017	31,522	1,100	1,066	31
Nov 2017	31,071	1,100	1,008	30
Oct 2017	28,792	950	820	31
Sep 2017	27,403	850	785	30
Aug 2017	30,891	1,200	901	31
Jul 2017	32,046	1,300	816	31
Jun 2017	24,538	700	542	30
May 2017	27,648	600	591	31
Apr 2017	27,494	600	551	30
Mar 2017	26,588	500	468	31
Feb 2017	27,813	1,000	697	28
Jan 2017	34,133	840	619	31
Dec 2016	32,135	650	367	31
Nov 2016	26,611	240	136	30
Oct 2016	27,491	0	0	31
Sep 2016	24,484	0	0	30
Aug 2016	18,909	0	0	31
Jul 2016	20,372	0	0	31
Jun 2016	19,853	0	0	30
May 2016	25,998	0	0	31
Apr 2016	24,604	40	40	30
Mar 2016	28,086	0	0	31
Feb 2016	28,622	0	0	29
Jan 2016	27,472	0	0	31
Dec 2015	24,873	0	0	31
Nov 2015	24,555	0	0	30
Oct 2015	20,926	0	0	31
Sep 2015	23,285	0	0	30
Aug 2015	25,225	0	0	31
Jul 2015	21,956	0	0	31
Jun 2015	23,687	0	0	30
May 2015	25,454	0	0	31
Apr 2015	27,187	0	0	30
Mar 2015	24,963	0	0	31
Feb 2015	21,830	0	0	28
Jan 2015	18,268	0	0	31
Dec 2014	16,749	0	0	31
Nov 2014	16,054	0	0	30
Oct 2014	3,501	0	0	31
Jun 2009	8,241	1,040	939	14
May 2009	21,787	1,040	970	31
Apr 2009	18,693	900	720	30
Mar 2009	18,426	760	549	30
Feb 2009	11,684	600	440	28
Jan 2009	17,832	820	773	31
Dec 2008	18,111	820	754	31
Nov 2008	19,054	800	762	30
Oct 2008	17,654	760	553	31
Sep 2008	15,222	580	376	30
Aug 2008	17,206	700	571	31
Jul 2008	16,161	1,680	336	31
Jun 2008	13,289	700	83	30
May 2008	2,321	840	120	7
Apr 2008	18,683	1,700	825	30
Mar 2008	16,754	1,700	563	31
Feb 2008	13,106	860	544	29
Jan 2008	16,694	1,000	817	31
Dec 2007	17,331	845	731	31
Nov 2007	15,287	640	502	30
Oct 2007	10,699	700	523	23
Sep 2007	14,351	1,875	868	30
Aug 2007	16,460	1,140	988	30
Jul 2007	17,819	1,240	1,100	31
Jun 2007	17,931	1,240	1,179	30
May 2007	18,736	1,200	1,145	31
Apr 2007	17,210	1,160	1,118	30
Mar 2007	16,546	1,200	1,073	31
Feb 2007	14,662	1,725	1,218	28
Jan 2007	19,965	1,640	1,365	31
Dec 2006	18,830	1,500	1,350	31
Nov 2006	19,072	1,750	1,472	30
Oct 2006	18,753	1,560	1,438	31
Sep 2006	20,223	1,580	1,499	30
Aug 2006	19,747	1,560	1,459	31
Jul 2006	20,995	1,580	1,481	31
Jun 2006	21,919	1,660	1,570	30
May 2006	20,931	1,580	1,338	31
Apr 2006	16,309	1,660	1,446	25
Mar 2006	20,950	1,590	1,496	31
Feb 2006	17,468	1,580	1,474	28
Jan 2006	19,367	1,610	1,543	31
Dec 2005	19,658	1,590	1,499	31
Nov 2005	19,357	1,440	1,369	30
Oct 2005	21,326	1,420	1,362	31
Sep 2005	22,648	1,420	1,404	30
Aug 2005	20,090	1,575	1,328	31
Jul 2005	23,548	1,520	1,473	31
Jun 2005	18,496	1,440	1,380	30
May 2005	18,564	1,460	1,404	31
Apr 2005	18,721	1,480	1,437	30
Mar 2005	18,023	1,520	1,451	31
Feb 2005	17,568	1,560	1,521	28
Jan 2005	19,611	1,550	1,514	31
Dec 2004	19,743	1,560	1,508	31
Nov 2004	17,926	1,550	1,497	30
Oct 2004	17,581	1,500	1,478	31
Sep 2004	16,196	1,560	1,505	30
Aug 2004	17,169	1,620	1,487	31
Jul 2004	17,477	1,550	1,508	31
Jun 2004	16,650	1,550	1,486	30
May 2004	16,762	1,550	1,467	31
Apr 2004	16,123	1,550	1,474	30
Mar 2004	17,852	1,575	1,488	31
Feb 2004	16,876	1,550	1,471	29
Jan 2004	19,064	1,530	1,463	31
Dec 2003	15,841	1,480	1,345	31
Nov 2003	14,756	1,440	1,350	30
Oct 2003	15,743	1,540	1,402	31
Sep 2003	14,836	1,520	1,333	30
Aug 2003	18,403	1,560	1,467	31
Jul 2003	16,872	1,600	1,452	31
Jun 2003	16,967	1,600	1,509	30
May 2003	18,300	1,520	1,450	31
Apr 2003	20,958	1,480	1,361	30
Mar 2003	16,023	1,380	1,253	26
Feb 2003	17,726	1,460	1,361	28
Jan 2003	20,775	1,500	1,414	31
Dec 2002	19,954	1,400	1,315	31
Nov 2002	18,563	1,360	1,268	30
Oct 2002	18,862	1,360	1,224	31
Sep 2002	18,589	1,380	1,247	30
Aug 2002	20,308	1,340	1,236	31
Jul 2002	18,826	1,420	160	31
Jun 2002	20,082	1,400	1,313	30
May 2002	22,822	1,380	1,330	31
Apr 2002	22,328	1,250	1,160	30
Mar 2002	20,362	1,040	970	31
Feb 2002	20,089	1,000	900	28
Jan 2002	21,259	900	800	31
Dec 2001	24,166	870	550	31
Nov 2001	25,436	650	300	30
Oct 2001	27,654	200	165	31
Sep 2001	22,375	0	0	30
Aug 2001	2,998	0	0	5
Jul 2001	—	—	—	—

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.

Completions

South Dakota files 2 completion reports for this well, one for each bore of the well.

Lateral 1 (Southwest)

InjectingWater Injection

Spudded

2000-11-22

Completed

2000-12-29

Measured depth

11,246 ft

True vertical depth

8,852 ft

Interval

Formation	Perforated (ft)
Unit B, Red River Formation	8,721–11,246

Lateral 2 (East)

InjectingWater Injection

Spudded

2000-11-22

Completed

2000-12-29

Measured depth

10,400 ft

True vertical depth

8,555 ft

Interval

Formation	Perforated (ft)
Unit B, Red River Formation	8,904–10,400

Location

45.868075, -103.670037

45.86807, -103.67004 · 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.