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Trial deployment of slickline-set SIM plugs and Peak latch/seal micro coil stinger


Technical Challenge:

Trial deployment of slickline-set SIM plugs and Peak latch/seal micro coil stinger for selective zonal isolation and treatment.

Well Type:

2 7/8-in training well.

Peak Solution:

Two 2 7/8-in SIM retrievable bridge plugs, SIM running tool, FlowThru’ check valve, latch/seal stinger together with 5/8-in micro coil.


International oil company, training well Thailand

The Challenge:

The purpose of the trial was to confirm that micro coil and Peak SIM plugs could be used together to isolate a specific producing zone enabling treatment fluid to be injected into the zone. The treatment fluid could consist of stimulation fluid or water shut-off treatment.


The following key requirements and concerns were highlighted by the customer:

  • Ability to isolate producing zones
  • Micro coil to have the ability to latch and release from the Peak SIM plug
  • Emergency release features to be in place on micro coil tools
  • Check valve to prevent back flow when releasing


The three day onshore trial was conducted in a training well.

Peak’s SIM retrievable bridge plug and prong were set as a barrier below the perforated interval of interest and a second SIM retrievable bridge plug fitted with a melon-type equalizing assembly and FlowThru’ check valve was set just above the perforated interval.

The micro coil was run into the well to stab the stinger-latch assembly into the upper SIM plug. Thereafter, treatment fluid was pumped through the coil into the isolated zone.

The dropball release function was checked - the ball pumped through the coil down to the stinger/latch to successfully release the micro coil from the upper SIM plug.

Testing of the emergency release feature of the micro coil stinger assembly was also conducted - the FlowThru’ check valve maintained pressure against the formation when the micro coil was disconnected and prevented the coil being blown up hole.

Value to Customer:

The successful trial using SIM retrievable bridge plugs with micro coil will be of particular value to brownfield operators:

  • A small footprint: cost effective means to isolate, stimulate and clean the producing sandface
  • Ease of deployment
  • Enhances performance of FloWell - to remove formation damage and improve well productivity
  • Ascertained that the micro coil could stab into the upper SIM plug successfully


Product Code: 351, 350