Treating and removing scale build-up within a tubing retrievable subsurface safety valve (TRSSSV) can be problematic, costly, and timely. For scale dissolvers to work effectively, they require extended soak periods to penetrate the scale.

What if there was a solution that combined traditional soaking methods with a ‘jetting’ action, targeting scale dissolvers directly at critical components of the downhole safety valve, agitating the scale as well as soaking it?

Introducing the NEW Oilenco Bullheading Jetting Sleeve.

Combining two tried and tested technologies in one tool, the Bullheading Jetting Sleeve delivers optimum scale treatment results by using a repeated method of scale soak and targeted jetting.

Requiring minimal well intervention, this innovative product is designed to precisely target critical areas within the TRSSSV using a ‘jetting’ action to optimise distribution and efficacy of scale treatment. Designed with a minimum of two jet subs, the system is preconfigured to target key mechanical components within the TRSSSV before being deployed into the well on slickline.

Unique to the Bullheading Jetting Sleeve is the multi-jet sub system. Each jet sub consists of an array of micro nozzles that create a 360⁰ jetting pattern. By positioning two or more jet subs at key locations within the safety valve (i.e. flow tube, exercise profile, flapper, etc.) scale dissolver can be precisely targeted at these critical areas.

Bullheading Jetting Sleeve Within Trsssv Pp
The dual benefit of soaking and targeted jetting

Between each jet sub there is a flowrate sensing valve that directs fluid to either the upper or lower jet sub depending on the velocity of the fluid passing through it. When pumping stops, the jetting stops. When not jetting, the Bullheading Jetting Sleeve reverts to a conventional soak arrangement allowing the scale dissolver to soak into the scale. As soon as surface pumping is reintroduced, the jet subs become active and intense fluid agitation can recommence.

“A time-saving, effective scale removal tool"

With constant replenishment of fluid, the system maximises performance of the scale dissolver in the most efficient time frame. Every drop of dissolver can be targeted at any critical area of the TRSSSV where scale build up could be affecting the functionality of the valve.

Due to the simplicity of its operation, the jetting sleeve requires no specialist training. The repeatable process of pump, soak, pump, etc., can be planned so that the scale dissolver volume and duration of the operation can be precisely configured and executed.

“Precise jetting, minimum intervention”

Even with the Bullheading Jetting Sleeve installed, the TRSSSV flow tube can still be hydraulically functioned. This may be desirable for circumstances where restricted flow tube movement is suspected to be the reason for the failure of the safety valve.

Jetting Web

An ideal dual technology solution when scale build-up is identified as the likely cause of a TRSSSV not functioning, the Bullheading Jetting Sleeve is an innovative addition to the Oilenco safety valve management portfolio, re-establishing the integrity of a well and allowing operations to continue.

For more information, call Oilenco on +44 (0)1224 548700 or email

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