Hydraulic Expansion External Casing Packer

 1. Application

It is a important well completion tool. It’s mainly used in complex oil, gas or water well completion engineering to realize downhole packing or plugging, improve well cementation and well completion.

It is used for staged packing of open holes for further operation. The pressure opens the packer’s rubber for setting. It mainly consists of central pipe, rubber, open/close valve. The open valve is activated by enough pressure to demanding value, and then set the packer. More pressure shall activate the close valve to close the packer.

2. Structure and work principle

It adopts expanding steel frame rubber as sealing element, it is a permanent external casing packer that setting controlled by Combination valves. It is mainly composed of valve joint, rubber assembly,central tube, pup joint, coupling and so on. During construction, when rubber plug go through valve joint, rod in the sealing inlet hole break off to open the inlet hole. When the rubber plug run to spoiler, start built pressure in casing. Liquid run into open valve from valve joint, when the pressure reached to the design, pin on open valve was cut to realize open the open valve. Liquid go through check valve and pressure limiting valve, run into the cavity between central tube and rubber. Then packer expansion and close to well wall to from seal. When expansion cavity pressure reached to the design of pressure limiting valve pin, pin break off, pressure limiting valve take movement to close the inlet hole in order to realize sealing safety. Wellhead release pressure to 0, open valve self-locking to realize permanently closed. Downhole pressure operation has no influence of packer. In the special pipe string precess, it can run inner pipe tools to set packer in order to realize special well completion(eg: well completion by packer or packer sieve tube).

3. Characteristics

1) Simple operation, no need to change the original operating craft.

2) Better adaptability, being applicable to oil/water well under various different condition.

3) Valve system can effectively protect and exactly control the tools to take setting safely.

4) Big expansion coefficient, small diameter rubber barrel can seal the big diameter well. When70mm packer is used in 7''casing, breakdown pressure can reach 28Mpa.

5) Small residual deformation.

6) It has high temperature resistant level, and can bear big differential pressure, with small residual deformation.

7) Long sealing section, reliable setting.

To order pls confirm:

1.Type of packer

2.Casing size and weight & hole size

3.Temperature & hole depth

4.Connection size and type

Rugao Yaou Import and Export Trade Co.,Ltd is an international integrative Corporation in oil/gas drilling industry ,combined with sales,service and technical consult.its was founded in 2002 with expression of passion,professional and advance.As  a fresh power,we are impacting and pushing China oil well equipments to expand and service the world market

Our supply scope has covered most products of oil/gas drilling and service:oil drilling rig/worker rig,spare parts on rig ,drill handling tools,downhole tools.pipe line,wellhead control equipment,solid control equipment,Well cement tools,fishing  tools,oil production tools etc,as well as accessories.We regulate that every product which deliver to oilfield must be compliance with latest API and ISO standard ,from producing to inspection to transportation,Rugao Yaou has many techinicians to supervise and control the quality ,packing and shipment ,and feedback all information to customers at he first time.sometimes we also can provide GOST standard according to client special request

Meanwhile,Rugao Yaou is pleasure to support technology advice and proposal to oilfields and factories .An effective team gathered from various branch of oil industry is touching and serving to world wide oilfield .In a very long period,Rugao Yaou has been striving the interchange ablity between China-made and other countries .We believe communication is the recourse of our inspiration.

Based on China fast-development petroleum machine industry system,Rugao Yaou Import and Export Trade Co.,Ltd has already established a stable and complete recourse net.We have gained the close relationship and priority from many powerful manufacturers .This obvious advantage makes us always can supply competitive price,technology and delivery.

 Rugao Yaou is a bridge .Connect China With  world

 We are committed to build the company into an international first-class petroleum equipment supplier and warmly welcome business partners at home and abroad for joint operation in various fields to realize mutual benefits and common development.

It would be our pleasure to begin a business relationship with you and supply u with our quality products, as a professional manufacturer, i would like to introduce our products to you and offer you a quote

1. We are professional oilfield equipment supplier in China more than 10 years.

2. Backup skillful and experienced sales team would help you get an efficient solution.

3. We have our own logistics company and this could guarantee the service after sales