CannSeal带来不一样的连续油管环形封堵技术

The criteria to be nominated as finalist states the following: “ICoTA International’s Annual Intervention Technology Award recognizes outstanding technical innovation or application of technology for well intervention. The application of the new intervention technology or technique should demonstrate; reduced risk, increased production, improved safety or minimized environmental impact. ”

CannSeal’s innovative solution is capable of providing a pin point isolation of the annulus, to effectively reduce unwanted water flow.

Prior to the judge election, Mr Gunnarsson, solution advisor and head of R&D, had explained the ICoTA Board of Directors how CannSeal technology distinguish itself from existing technology, and emphasized the added value to the clients assets. CannSeal also participated on the two days conference, presenting the technology to important players in the oil community.

The CannSeal e-line tool conveys the premixed epoxy sealant to the target area. In a single run, the tool operator perforates through the tubing, and injects the high viscous sealant material into the annulus forming an epoxy donut, capable of zonal isolation. The proprietary epoxy sealant is unique with rheology behavior allowing it to be injected in an open or cased hole annulus with crossflow, or even to be injected into gravel pack completions. It can also be used to squeeze epoxy into a cement micro annuls. Solidification of the epoxy is stimulated by the well temperature. and is premixed at onshore location.

The CannSeal technology

CannSeal™ is new technology that is developed specifically for annular isolation. The tool runs on a standard electrical mono-conductor cable, and the annular plug will provide a durable seal after being injected and placed at the predefined location. This is all done in one single wireline operation.

The CannSeal Tool

The CannSeal tool is run on electric line with online monitoring of well and tool parameters through our customized graphical user interface (GUI). The tool has an outer diameter of 3.3 inch and can operate inside 4 1/2″ – 7″ tubing or casing. Standard tool length without sealant canisters is 9,6m meters. Sealant Canisters will be custom built on request from customer within the range of OD 3.3″ – 4.0″ and a maximum length of 14 meters.

The CannSeal™ service allows a designer epoxy to be deployed downhole to provide a durable annular seal.

The Epoxy sealant can be tailor made to any well application in relation to viscosity, rheology and density.

The treatment effectively seals off unwanted fluid x-flow behind liners, tubing and screens by placing a solid external annulus packer.

The sealant can be tailored to function as a remedial integrity barrier during well production or as a component within a P&A operation.

Examples of CannSeal Applications using the CannSeal proprietary epoxy sealing technology;

• Zonal isolation

1. In an open annulus between casing and formation.
2. In a gravel packed well.
3. In a well completed with sand screens.
4. In a cased hole annulus.

• Well integrity

1. Remedial repair of leaking packers.
2. Repair of micro annulus in a cement matrix.
3. Support to Plug and Abandonment, P&A activities;
4. Annulus support for circulating in Cement, Sandaband,  ThermaSet, or similar placement.
5. Isolate individual pressure zones or reservoirs.
6. Place annulus plugs on top of reservoir.
7. May be used in combination with plugging of one well bore prior to drilling one or more new branches.
8. Cement sealant to repair micro annulus.
9. Remedial annular barrier to assist offline operations.

About CannSeal

CannSeal is a Norwegian-based, technology-focused, oil service company that has developed a proprietary annular isolation technology for enhanced oil recovery.The company is a spin-off from the AGR Group and is currently owned by EDS Group, Statoil, and Sumitomo.