GASGUN INITIATES PRODUCTION FROM DEAD WELL

Background

Getting oil out of the ground in Canada can often be a challenge. For an operator in Alberta, this was just the case. After perforating and acidizing a well back in 2011, it wouldn’t produce the expected oil. It was intervened in several times to get it started, but still failed to produce. At this point it was temporarily abandoned.

Prior to permanent abandonment, however, another attempt was made to get the formation to flow. This time applying the GasGun, a radial fracturing tool. Welltec Wireline Services was mobilized to the wellsite to run this propellant based application.

OPERATION

At the wellsite the e-line was rigged up and a four meter GasGun run in hole. Each GasGun is specifically tailored for the application to which it is being applied, this one to create far reaching fractures into the formation. It was quickly positioned on depth across from the existing perforations and successfully fired, creating a high pressure buildup. The toolstring was then pulled back to surface and e-line rigged down.

ACHIEVEMENTS

The next day the well was swabbed, reducing the hydraulic head to encourage production. Some oil was recovered but nothing significant. The well was swabbed dry and put back on hold. About a month later, pressure was noticed on the wellhead and it was swabbed dry again, this time recovering 5-6 m~3 of fluid with 80% oil, indicating inflow from the production.

The well was then equipped for production and has produced initially at about 2-3 m~3 / day before dropping off to a steady rate since then.

Operationally, the GasGun rig-up, run, rig-down was completed in less than six hours, a very smooth operation. As a result of that intervention, a previously dead well has been brought to life, turning from a sunk cost into a cash contributor.

MAX DEVIATION: VERTICAL
WELL TYPE: OIL PRODUCER
PRODUCTION INCREASE: FROM ZERO TO 2 M~3 / DAY

Client quote: Al Bessel, Vulture Energy LTD

“As it eventually turned out, the GasGun did the trick for this well. It sat for three years and then we did the GasGun treatment. It has been making about 1 m~3 / day steady since we put it on. I’m a happy customer!”