RIFFE UNIT

Lease 1001120339 · Rooks County, Kansas · Sec 4 T7S R19W · DOR 110408

Oil1971–19888 wells

Operator

GRAHAM-MICHAELIS

Cumulative (state figure)

200,866 bbl

First production

1971

Last production

1988

Location (PLSS)

Sec 4 T7S R19W

Monthly oil production

108 months filed with the Kansas Geological Survey, Jan 1980 to Dec 1988. Volumes are bbl at lease level — a lease can cover many wells, so this is not a well's output.

Total over the months shown

75,974 bbl

Months filed

108

Most wells in a month

This lease was producing before 1980, and the series begins in January 1980. The total above covers the months shown, not the life of the lease; the state's own cumulative is 200,866 bbl.

Month	Oil (bbl)	Wells
Dec 1988	260	11
Nov 1988	176	11
Oct 1988	177	11
Sep 1988	182	11
Aug 1988	341	11
Jul 1988	174	11
Jun 1988	173	11
May 1988	181	11
Apr 1988	439	11
Mar 1988	174	11
Feb 1988	333	11
Jan 1988	645	11
Dec 1987	351	11
Nov 1987	362	11
Oct 1987	520	11
Sep 1987	346	11
Aug 1987	522	11
Jul 1987	373	11
Jun 1987	693	11
May 1987	465	11
Apr 1987	546	11
Mar 1987	527	11
Feb 1987	382	11
Jan 1987	353	11
Dec 1986	523	11
Nov 1986	354	11
Oct 1986	348	11
Sep 1986	498	11
Aug 1986	306	11
Jul 1986	515	11
Jun 1986	340	11
May 1986	693	11
Apr 1986	701	11
Mar 1986	693	11
Feb 1986	699	11
Jan 1986	790	11
Dec 1985	686	11
Nov 1985	699	11
Oct 1985	852	11
Sep 1985	656	11
Aug 1985	658	11
Jul 1985	478	11
Jun 1985	641	11
May 1985	694	11
Apr 1985	663	11
Mar 1985	697	11
Feb 1985	702	11
Jan 1985	704	11
Dec 1984	854	11
Nov 1984	708	11
Oct 1984	521	11
Sep 1984	471	11
Aug 1984	855	11
Jul 1984	803	11
Jun 1984	691	11
May 1984	707	11
Apr 1984	843	11
Mar 1984	660	11
Feb 1984	673	11
Jan 1984	1,000	11
Dec 1983	514	11
Nov 1983	1,011	11
Oct 1983	693	11
Sep 1983	816	11
Aug 1983	728	11
Jul 1983	895	11
Jun 1983	689	11
May 1983	602	11
Apr 1983	773	11
Mar 1983	986	11
Feb 1983	808	11
Jan 1983	1,058	11
Dec 1982	823	11
Nov 1982	1,027	11
Oct 1982	940	11
Sep 1982	693	11
Aug 1982	1,027	11
Jul 1982	842	11
Jun 1982	972	11
May 1982	1,061	11
Apr 1982	1,023	11
Mar 1982	766	11
Feb 1982	937	11
Jan 1982	680	11
Dec 1981	861	11
Nov 1981	883	11
Oct 1981	1,044	11
Sep 1981	729	11
Aug 1981	981	11
Jul 1981	1,045	11
Jun 1981	753	11
May 1981	1,063	11
Apr 1981	1,031	11
Mar 1981	889	11
Feb 1981	1,358	11
Jan 1981	876	11
Dec 1980	709	11
Nov 1980	1,359	11
Oct 1980	693	11
Sep 1980	1,224	11
Aug 1980	1,043	11
Jul 1980	1,014	11
Jun 1980	995	11
May 1980	691	11
Apr 1980	1,350	11
Mar 1980	1,020	11
Feb 1980	868	11
Jan 1980	1,060	11

Lease-level volumes as filed with the Kansas Geological Survey. A blank well count is a month the state filed no count for, not a month with no wells.

Wells on this lease

8 wells the state's well register assigns to this lease. Every one has a page.

Well	No.	Operator	Status
Riffe	1	unavailable	Converted to SWD Well
Riffe 'A'	1	Graham-Michaelis Corporation	Plugged and Abandoned
Riffe 'A'	3	Graham-Michaelis Corporation	Plugged and Abandoned
Riffe 'A'	5	unavailable	Converted to EOR Well
Riffe 'A'	6	Graham-Michaelis Corporation	Plugged and Abandoned
Riffe 'A'	4	unavailable	Plugged and Abandoned
Riffe 'B'	1	unavailable	Approved Intent to Drill
Riffe 'A'	2	unavailable	Plugged and Abandoned

Location

39.473766, -99.443898 · Sec 4 T7S R19W

Kansas Geological Survey data, corpus built 2026-09-07. Lease 1001120339. The state’s own record.