Illinois

  • Robinson Sandstone

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

    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.

  • Tar Springs Sandstone

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

    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.

  • Benoist Sandstone

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

    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.

  • Biehl Sandstone

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

    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.

  • Cypress Sandstone (Waste Disposal Well)

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

    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.

  • Aux Vases Sandstone

    Formation: Aux Vases Sandstone
    Formation Depth: 3180′
    Prior Production: 10 BOPD
    After Stimulation: 45 BOPD

    A new well in White County, Illinois, was stimulated with a 4 foot GasGun. This well is a cased hole completion in the Aux Vases sandstone formation at a depth of 3180 feet. The well was reportedly making 10 BOPD naturally. After the GasGun treatment, production increased to 45 BOPD.

  • Benoist Sandstone

    Formation: Benoist Sandstone
    Formation Depth: 1436′
    Prior Production: 0.5 BOPD
    After Stimulation: 4.5 BOPD
    After 4 months: 4.5 BOPD

    A well in Clinton County, Illinois, was stimulated with a 4 foot GasGun. The well was completed open hole in the Benoist sandstone formation at a depth of 1436 feet. Oil production increased from 0.5 to 4.5 BOPD. We received a report 4 months later stating that production was still holding at 4.5 BOPD.

  • Benoist Sandstone

    Formation: Benoist Sandstone
    Formation Depth: 2354′
    Prior Production: 1.5 BOPD
    After Stimulation: 10 BOPD
    After three weeks: 6 BOPD

    A well in Fayette County, Illinois, was stimulated with a 6 foot GasGun. This well is a cased hole completion in the Benoist formation at a depth of 2354 feet. Production increased from 1.5 BOPD to 10 BOPD. After 3 weeks production continued at 6 BOPD.

  • Aux Vases Sandstone

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

    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.

  • Trenton Limestone

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

    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.

  • Trenton Limestone

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

    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.

  • Tar Springs Sandstone

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

    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.

  • Palestine Sandstone

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

    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.

  • Cypress (Injection Well)

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

    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.)

  • Trenton Limestone

    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

    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.

  • Aux Vases Limestone

    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 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.

  • Upper Mississippian Sandstone

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

    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.

  • Pennsylvania Sandstone

    Formation: Pennsylvania Sandstone Formation Depth: 3 wells at 530′
    Prior Production: 1 BOPD
    After Stimulation: 5-6 BOPD
    Sustained: 4-5 BOPD

    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.