What is EZSV Packer?
OVERVIEW. EZ Drill® SVB (sliding valve brass) squeeze packers can be used for applications, such as wellbore isolation, remedial cementing, and plug and abandonment. Equipped with a rugged brass mandrel, the packer can absorb greater tensile and impact loads.
What is the difference between cement retainer and bridge plug?
The difference between each tool is that the TAM Cement Retainer allows the operator to cement through the tool, and the TAMPLUG is strictly a bridge plug.
What is a cement retainer in the oilfield?
1. n. [Well Completions] An isolation tool set in the casing or liner that enables treatments to be applied to a lower interval while providing isolation from the annulus above. Cement retainers are typically used in cement squeeze or similar remedial treatments.
How does production packer work?
A packer is run in the casing on production tubing or wireline. Once the desired depth is reached, the slips and element must be expanded out to contact the casing. Axial loads are applied to push the slips up a ramp and to compress the element, causing it to expand outward.
What is a bridge plug in oil wells?
Bridge Plugs are downhole tools composed of slips, mandrel and an elastomer sealing element. It is run in hole and set in casing to isolate a lower zone from an upper zone. It may be installed to permanently seal a well or installed temporarily to preform work on the well.
How does a bridge plug work?
Why does my permanent retainer hurt?
If you have started to experience pain or sensitivity around the area the retainer is located, that may mean that your teeth have shifted. In the cause of pain, you should contact your dentist or orthodontist so your teeth and retainer can be examined.
Are wire retainers permanent?
Permanent retainers consist of a solid or braided wire that is curved to fit the shape of your newly straightened teeth. The wire is cemented (bonded) to the inside of your front teeth to keep them from moving. Most often used on lower teeth, they are also called fixed, lingual wire, or bonded retainers.
What is squeeze cement?
Squeeze cementing is a dehydration process. A cement slurry is prepared and pumped down a wellbore to the problem area or squeeze target. The area is isolated, and pressure is applied from the surface to effectively force the slurry into all voids.
What is hesitation squeeze?
1. n. [Well Workover and Intervention] A technique used in squeeze cementing whereby a portion of the slurry is pumped, then pumping stops to expose the slurry to differential pressure against the zone of interest in stages over a period from several minutes to several hours.
Does the ezsv set correctly with Whipstock?
Anyway, the EZSV appeared to set correctly (and was apparently wireline tagged) but was not tagged when RIH with whipstock. Only theory so far is that plug setting mechanism was affected by the fact that we had a solid barrier close beneath with incompressible fluid between the plug and the cement.
How is the Packer set up and used?
The packer is first run and set on electric wireline. The electric wireline setting tool provides the force necessary to anchor the slips in the casing wall and energize the packing element. Once the packer is installed and the wireline is retrieved, a seal housing (similar to an overshot) is run in the hole on the bottom of the production tubing.
Does the tension Packer have an equalizing valve?
The tension packer does not have an equalizing (or bypass) valve to aid in pressure equalization between the tubing and annulus to facilitate the retrieval of the packer.
What is this ezsv plug for?
The plug was intended to form the base for a whipstock. About 20m below we had a cement plug (whipstock Co was not happy to set the anchor on the cement in this particular instance). Anyway, the EZSV appeared to set correctly (and was apparently wireline tagged) but was not tagged when RIH with whipstock.