Factory Hydraulic stage cementing collar/multiple stage cementing collar

 Shandong Yacheng Petroleum Technology Co., Ltd.(YCPT) was established in 2016 while the mother company Dongying Xincheng Petroleum Technology was founded since 2003, and located at the second largest oilfield of China—Shengli Oilfield in Dongying city, which is famous as “oil city” in China. In domestic, we are first class supplier in vendor list of CNPC, SINOPEC, and CNOOC, and member of CCOIC,CCPIT and so on. 

The company is committed to develop, manufacture and supply of oilfield equipment, like oil and gas drilling rig equipment and spares, handling tools like hydraulic power tong, elevator,pneumatic spider, mud pump with spares, BOP equipment, Gate valve, manifold and swivel joint,etc. 

We have established a complete quality control system, all products& equipment manufactured as per international standard ISO 9001 and API standard.

Factory Supply API Quality Hydraulic/Mechanical Multiple stage cementing collar

1.Description: 

Specifications: 5 1/2''--13 3/8''. More special sizes or combination are available as requested.

 Introduction

The Stage Collar provides an effective, economical way to cement one or more specific casing intervals or to cement upper zone saft era lower zone has been cemented.

The collar should be used with centralizers above and below and a cementing basket positioned below the ports.

The operation of the collar is simple and reliable. It features a double locking mechanism consisting of a snap lock and ball lock system to assure that the ports are permanently locked closed after cementing is completed. Internal parts are designed to lock to prevent rotation during drill out and are constructed of easily drillable materials.

Features of Drilling Free Stage Collar

1) Opening pressure can be adjusted and it is not subjective to hole angle.
2) The pressure-relief design prevents fluid trapping and compression during the closing phase of the tool's operation.
3) The I.D of upper/lower sub is the same as that of casing, but smaller than that of closing sleeve, which can minimize chances of damages to the closing sleeve.
4) The inner seats are made of an easily drillable NBR rubber/aluminum material. Both the opening and closing seats lock agaist rotation for easy drill out.