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US 10,883,335 B2Granted
Holddown assembly
OwnerMalcolm Goffinventor
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OwnerMalcolm Goffinventor
Estimating the term…
A holddown assembly is provided for axially securing a pump in a wellbore. The assembly has a mandrel having at least one resilient holding element and at least one resilient sealing element. The holding elements are made of a durable material and configured to require a pre-determined seating force to seat the assembly in a seating tubular, and a pre-determined unseating force to unseat the assembly. The holding elements are configured to elastically deform when seated, such that the pre-determined seating and unseating force does not change significantly even over many seating/unseating cycles. The sealing elements are configured to sealingly engage with the seating tubular to prevent wellbore fluid from flowing thereby. As the sealing elements are only used for forming a fluid seal, and not for securing the pump, damage to the sealing elements as a result of repeated seatings and unseatings is mitigated.
A holddown assembly for removably seating in a seating tubular having a bore with an inner diameter, comprising:
A method of seating a holddown assembly having two or more axially adjacent holding elements and one or more sealing elements axially spaced from the two or more holding elements thereon in a bore of a seating tubular located in a wellbore, the two or more holding elements made of a first resilient material and having an outer diameter greater than an inner diameter of the seating tubular, comprising:
A method of assembling a holddown assembly, comprising:
Dependencies are inferred from the claim text.