ADOPTED DRILLING PROCEDURE 



DISTR IC T Arenoeo Basin 

 FIELD Ajgnoyso Basin wildcat 

 WELL No. 1 Juan Cuervo 

 DATE 



MUD PROGRAM 



lO- 12# low-water loss mud. Satisfactory to carry 8- 10% 

 oil emulsion if hole conditions warrant. Lost circulation 

 material should be added around 5500' before drilling 

 Ordovician section. 



CASING 



Size 

 9 5/B" 

 5 1/5" 



Est. T.D. 



Depth 

 1000' 

 7000' 



7000' 



COMPLETION : 

 Type: cosed hole 



# Sand/Gal/ 



OTHER: 



Surface casing to be set 

 through all possible fresh- 

 water sands. No abnormal 

 pressures expected. Possible 

 lost circulation zones in 

 Devonian and Ordovician 

 sections. 



SAMPLE PROGRAM 



5' samples and drilling time from O'-TD. 



Mud -logging unit will be used from 0' -TD. 



CORING PROGRAM 



4 cores 1500-2000* as determined by oil shows. 

 16 cores 4100-4500' (Si luro- Devonian). 



8 cores 5800-6000' (Cambro- Ordovician) 



2 cores 6900-7000* (Precambrion). 

 Plus any other shows found by geologist. 

 DRILL -STEM TESTS 



4 Permo- Pennsylvania!! 1500-2000'. 

 16 Si luro -Devonian reef 4100-4500' or to water/oi I contact. 



8 Ellenburger 5800-6000' or to water/oil contact. 



1 Precambrion 6800-7000'. 

 Plus any other shows a% found by geologist. 

 SURVEYS 



Correlation ES logs 9 1000, 2500, 4000, 5500.'. 

 ES and microlog 9 5000' if reef indicates production. 

 ES, microlog, dipmcter, velocity survey 9 TD. 

 Caliper survey if 5 1/2" csg. is to be run. 

 Gamma ray -neutron and collar locator after running casing. 

 CASING CEMENTING 



9 5/8" cemented to surface with neat cement. 

 5 1/2" cemented up to surface casing using 8-10% gel 



with 200 sx. neat cement on bottom. 

 Use scratchers and centralizers opposite all pay sections. 



FUEL: Source Butane 



Length line Trucked in (United Butane Co.) 



WATER: Source Water Well Lengm line 150' Booster Pump Required No 



25 mi les graded 

 ROAD : Length 27 mi les Type 2 mi les surfaced Est. Completion Date 10 days after location made 



LOCATION: Est. Completion Date 



Approved : 



Dist. Exploration Manager 



Area Superintendent 



Orig: Dist. Superintendent 



3 cc: Area Superintendent 



2 cc: Dist. Exploration Manager 



1 cc: Dist. Pet. Engr. 



Figure 41-22. Drilling procedure for Amprex No. 1 Juan Cuervo. 



