Conductor Sharing Wellhead

Using conductor sharing wellhead technology, on restricted template, using limited well slot, can drill more well hole. This technology has very widespread application value and great potential in offshore oil field development and construction, also has a great significance of drilling and engineering cost reduction. Two Wells sharing one well marine riser offshore platform size can be reduced, save the project cost. conductor sharing wellhead cementing technology, can saves time and reduces the cost, has extensive application value for the development of ocean oil and gas in the oil price downturn environment.

The characteristics of conductor sharing wellhead cementing technology is put two 13-3/8' surface casing into 30", 33", 36" marine riser, divided into long casing and short casing, down to the depth difference in about 30 m, long casing bottom has float shoe which equipped with non-return valve, can prevent backflow, short casing has drive shoe with no non-return valve. After the casing arrived, once cementing can achieve the goal of sealing two wells.

• One well bore can exploit two different strata or two sections of land at the same time.
• Surface casing use mandrel hanger.
• Tubing hanger has interfaces of double-cable penetrate, control pipeline, injection chemical reagent and data cable.
• Can be equipped with hydraulic (pneumatic)safety value.
• Apply to all kinds of casing and tubing program.
• Working pressure: 2000PSI～20000PSI
• Working Medium: oil, natural gas, mud, including H2S, CO2
• Working Temperature: -46°C～121°C（Class LU）
• Material class: AA, BB, CC, DD, EE, FF, HH
• Specification level: PSL1~4
• Performance level: PR1~2