StimGun®, StimTube® and Horizontal Stimulation ToolTM are oxidiser based tools designed for near wellbore reservoir stimulation.
They provide a cost effective way to remove near wellbore damage in older producing wells with existing perforations thus improving production. In new wells they can be used for pre-hydraulic Frac perforating to reduce horsepower requirements during hydraulic fracturing by up to 35%. In addition StimGun and StimTube can dramatically improve frac pack operations by opening up all the perforations in the interval prior to the pack.
Expro has an extensive track record both in North America and Europe of providing clients with StimGun and StimTube solutions that have resulted in improved production and reduced costs.
StimGun is a combination perforating gun/oxidiser sleeve that can be conveyed via slickline, electric line, coil tubing or tubing conveyed perforating systems. A sleeve of oxidiser of predetermined length is placed over the perforating gun and deployed in the wellbore. The detonation of the perforating gun and the confinement of the wellbore hydrostatic pressure ignites the oxidiser resulting in the generation of large amounts of non-reactive gas at high pressures. Pressure can be as high as 20,000 psi for 10 to 20 milliseconds, resulting in fracture generation and perforation breakdown.
StimTube is designed as a through tubing tool to treat existing perforations or zones. StimTube is a solid tube of oxidiser cast onto a stainless steel tube. It can be deployed to the wellbore by either slickline, electric line or coil tubing. It is ignited by a length of detonating cord running the length of the tool. As in StimGun, the shock of the detonating cord and the confinement of the wellbore pressure ignites the tool generating a large surge pressure at the perforations. Perforation breakdown and fracturing through near wellbore damage are the result.
The effect of propellant stimulations can be predicted by PulsFrac, a sophisticated modelling software that uses over 120 parameters to predict peak pressure, fracture length, perforation breakdown and more. The model can be validated by high speed pressure recorders deployed with the tool string. These high speed recorders have a sample rate of 115 kHz, can sustain accelerations of 50,000G and have a memory storage of 1,000,000 data points.
The Horizontal Stimulation ToolTM is a modular variant of StimGun™ that was developed specifically for long horizontal intervals and is run inside a steel ported carrier.
StimGun / StimTube / Horizontal Stimulation Tool
They provide a cost effective way to remove near wellbore damage in older producing wells with existing perforations thus improving production. In new wells they can be used for pre-hydraulic Frac perforating to reduce horsepower requirements during hydraulic fracturing by up to 35%. In addition StimGun and StimTube can dramatically improve frac pack operations by opening up all the perforations in the interval prior to the pack.
Expro has an extensive track record both in North America and Europe of providing clients with StimGun and StimTube solutions that have resulted in improved production and reduced costs.
StimGun is a combination perforating gun/oxidiser sleeve that can be conveyed via slickline, electric line, coil tubing or tubing conveyed perforating systems. A sleeve of oxidiser of predetermined length is placed over the perforating gun and deployed in the wellbore. The detonation of the perforating gun and the confinement of the wellbore hydrostatic pressure ignites the oxidiser resulting in the generation of large amounts of non-reactive gas at high pressures. Pressure can be as high as 20,000 psi for 10 to 20 milliseconds, resulting in fracture generation and perforation breakdown.
StimTube is designed as a through tubing tool to treat existing perforations or zones. StimTube is a solid tube of oxidiser cast onto a stainless steel tube. It can be deployed to the wellbore by either slickline, electric line or coil tubing. It is ignited by a length of detonating cord running the length of the tool. As in StimGun, the shock of the detonating cord and the confinement of the wellbore pressure ignites the tool generating a large surge pressure at the perforations. Perforation breakdown and fracturing through near wellbore damage are the result.
The effect of propellant stimulations can be predicted by PulsFrac, a sophisticated modelling software that uses over 120 parameters to predict peak pressure, fracture length, perforation breakdown and more. The model can be validated by high speed pressure recorders deployed with the tool string. These high speed recorders have a sample rate of 115 kHz, can sustain accelerations of 50,000G and have a memory storage of 1,000,000 data points.