Formation: Robinson Sandstone
Formation Depth: 892'
Prior Production: 0.5 BOPD
After Stimulation: 18 BOPD

In October 2006, a well in Lawrence County, Illinois, was stimulated with a 4 foot GasGun. The well was completed open hole in the Robinson sandstone formation at a depth of 892 feet. Oil production went from 0.5 BOPD to 18 BOPD after the GasGun stimulation.

Formation: Tar Springs Sandstone
Formation Depth: 2205'
Prior Production: 0 BOPD
After Stimulation: 10 BOPD

In October 2005, a well in White County, Illinois, was stimulated with a 4 foot GasGun. The well is a cased hole completion in the Tar Springs sandstone formation at a depth of 2205 feet. Oil production went from 0 BOPD to 10 BOPD after the GasGun stimulation.

Formation: Benoist Sandstone
Formation Depth: 1450'
Prior Production: 1 BOPD
After Stimulation: 3 BOPD

In August 2005, a well in Marion County, Illinois, was stimulated with a 4 foot GasGun. The well was completed open hole in the Benoist sandstone formation at a depth of 1450 feet. Prior to the GasGun treatment the well had been shut in for 15 years. It flow tested at 1 BOPD before the stimulation and after it was making 3 BOPD.

Formation: Biehl Sandstone
Formation Depth: 1863'
Prior Production: 0 BOPD
After Stimulation: 7 BOPD

In August 2005, a well in White County, Illinois, was stimulated with a 4 foot GasGun. The well is a cased hole completion in the Biehl sandstone formation at a depth of 1863 feet. The operator believed the formation had been damaged from a previous acid treatment. The well had no prior oil production and after the GasGun stimulation the well produced steadily at 7 BOPD.

Formation: Cypress Sandstone 
(waste disposal well)
Formation Depth: 2652'
Prior Injection Pressure: 900 PSI
After Stimulation: 450 PSI
After two months: 450 PSI

In July 2004, a waste disposal well in Clay County, Illinois, was stimulated with a 4 foot GasGun. This well is a cased hole completion in the Cypress sandstone formation at a depth of 2652 feet. After the GasGun treatment, pressure required to inject into the well decreased from 900 PSI to 450 PSI. After two months, the injection pressure was still holding at its post stimulation level.

Formation: Aux Vases Sandstone
Formation Depth: 3224'
Prior Production: 2-4 BOPD
After Stimulation: 54 BOPD 
Sustained: 8-12 BOPD

In June 2000, a well in Hamilton County, Illinois, was stimulated with a 6 foot GasGun. This well was completed open hole in the Aux Vases formation at a depth of 3224 feet. A water-bearing zone is known to exist just below this oil layer, and hydraulic fracturing would likely “bring in the ocean.” Immediately following the GasGun stimulation, oil production increased from 3 to 54 BOPD with a modest amount of water. This data helps confirm the fact that GasGun fractures stay in the zone treated. Production has been sustained at 10 BOPD.

Formation: Trenton Limestone
Formation Depth: 2838’
Prior Production: .5 BOPD
After 1 month: 11 BOPD
After 2 months: 5-6 BOPD

In June 2000, a well in Clark County, Illinois, was stimulated with a 10 foot GasGun. This well is a cased hole completion in the Trenton formation at a depth of 2838 feet. Production increased from less than 0.5 BOPD to an average 11 BOPD for 4 weeks. Production was 5-6 BOPD after 8 weeks.

Formation: Trenton Limestone
Formation Depth: 2350’
Prior Production: 1 BOPD
After Stimulation: 18 BOPD
After 1 week: 8 BOPD
After 3 months: 5 BOPD

In May 2000, an old well, drilled in 1903 in Clark County, Illinois, was stimulated with two 10-foot GasGuns. This well was completed open hole in the Trenton formation at a depth of 2350 feet. Oil production, which had been 1-1.5 BOPD, went to 18 BOPD initially, 8 BOPD for about a week and after 3 months leveled off at 5 BOPD.

Formation: Tar Springs Sandstone
Formation Depth: 2422’
Prior Production: 0 (Recompletion)
After Stimulation: 30 BOPD
After three weeks: 5-6 BOPD

In February 2000, a well in White County, Illinois, was stimulated with an 8 foot GasGun. This well was recompleted in the Tar Springs formation at a depth of 2422 feet. This formation is particularly close to water and is known to "bring in the ocean" when fraced. Immediate production after stimulation was 30 BOPD and 45 BWPD and, after three weeks, was 5-6 BOPD and 5-6 BWPD.

Formation: Palestine Sandstone
Formation Depth: 3 wells at 2030’
Prior Production: 2-4 BOPD
After Stimulation: 10-15 BOPD

In February 2000, three oil wells in Gallatin County, Illinois, were stimulated with five GasGun tools. These wells were stimulated through perforated casing. All were completed in the Palestine formation at a depth of approximately 2030 feet, and one was also completed in the Clore and Degonia formations. Production in one well increased from 2 or 3 BOPD to 10 BOPD and another increased from 3 or 4 BOPD to 15 BOPD. Unfortunately, stimulation in the third well resulted in a large influx of water, possibly from a bad cement job.

Formation: Cypress Sandstone
(Injection Well)
Formation Depth: 2508'
Prior Injection Pressure: 1600 psi
After Stimulation: 800 psi

In November 1999, an injection well in Wabash County, Illinois, was stimulated with a GasGun. The well was completed in the Cypress formation at a depth of 2508 feet and had been previously acidized and hydraulically fractured in an effort to lower injection pressures. After each treatment, injection pressures would drop from 1600 psi to 800 psi, but would rise back to 1600 psi after just 2 months. A 6 foot GasGun was used, and again the pressure dropped from 1600 psi to 800 psi, but this time the improvement was long lasting. As of March 13, 2001, 16 months later, the injection pressure is still at 800 psi. (Note: All GasGun stimulations performed to date in injection wells have provided positive results.)

Formation: Trenton Limestone
Formation Depth: 2 wells at 2370’
Prior Production: 1.5 BOPD
After Stimulation: 22 BOPD
After 1 month: 15 BOPD
After 4 months: 5 BOPD

In October and November 1999, two old oil wells in Clark County, Illinois, were stimulated with the GasGun. These wells are open hole completions in the Trenton limestone at depths of approximately 2370 feet. Production in the first well increased from 1.5 to 22 BOPD shortly after the stimulation. After one month, it was making 15 BOPD, and after four months leveled off at 5 BOPD. This equates to over 1000 BBL of added production in four months. The second well increased from 1 to 21 BOPD, but quickly fell to 8 BOPD. Three months later it was making 4 BOPD.

Formation: Aux Vases Sandstone
Formation Depth: 3200’
Prior Production: 0 BOPD
After Stimulation: 1000 BOPD
After two weeks: 40 BOPD
After three weeks: 6 BOPD

One of our most dramatic stimulations occurred in early August 1999 in White County, Illinois. The well was completed open hole in the Aux Vases formation at 3200 feet and had no natural production. Hydraulic fracturing was attempted, but it apparently screened out. An acid treatment was also unsuccessful. With absolutely no production realized, a 4 foot GasGun was tried. The well immediately began to flow at the surface at a rate of 40 barrels per hour, or nearly 1000 BOPD. It continued at that rate for several days. Eventually the well was put on a pump, and after two weeks was producing 40 BOPD. After three weeks the well was down to 6 BOPD, and the operator decided to try another hydraulic fracture. This time the hydraulic fracture treatment was successful.

Formation: Upper Mississippian Sand
Formation Depth: 1475’
Prior Production: 3 BOPD
After Stimulation: 10-14 BOPD
Sustained: 10-14 BOPD

In November 1998, an oil well in Fayette County, Illinois, was stimulated with an 8 foot GasGun. This well was completed open hole in the Upper Mississippian sand at a depth of 1475 feet. Hydraulic fracturing was ruled out because a water-bearing zone is only a few feet below the oil formation. Production increased from 3 BOPD to a sustained 10-14 BOPD without any increase in water production. 

In late May 1998, three shallow (530') wells in Madison County, Illinois, responded well to GasGun stimulations. These wells were shot with nitroglycerine and produced for a time, but were later plugged with cement. The cement was drilled out in the 80's. Some wells received some acid treatment, without much response. Each of the three wells produced about 1 BOPD. All three wells were shot with the GasGun and production in each increased to 5 to 6 BOPD plus some gas. After several months of pumping, sustained production was 4 to 5 BOPD.