China API Mechanical Two-Stage Cementing Collar with Coupling

API Mechanical Two-Stage Cementing Collar with Coupling
1. Scope
Stage collar is a kind of mechanical tool used to complete cementing operation into two times, mainly used in the following circumstances:
1.1. Excessive injection of cement at one shot.
1.2. The formation cannot bear gigantic fluid pressure.
1.3. Packoff special strata.
1.4. Avoid occurrence of annual air channeling after cementing work.
1.5. The considerable temperature difference between the upper and lower section makes it rather difficult to adjust slurry performance.

2. Structure

Our stage tool mainly consists of two-stage coupling (body), first-stage plug, shut-off baffle, free-fall opening plug and closing plug.

3. Main characteristics

3.1. It adopts inner-closing structure and locking device on closing sleeve. Lock is reliable after closing.
3.2. The liquid would not occur in the loculum when opening or closing.
3.3. The ID. of upper/lower sub should be the same as that of casing, it can protect the body of stage collar from damaging when the bits going down and doing drill-out operation.
3.4. All the accessories are made in the drillable rubber or aluminum material. They have the function of anti-rotation , it can make drillout easy.
3.5. You can use pumping-down plug to carry out continuous process.
3.6. Apply to the well deflection should be ≤25°
4. Main technical parameters

Specification 13 3/8"(Φ339.7mm)Opening Pressure,(Mpa)7Closing Pressure (MPa)5Sealing Capacity (MPa)25Connection Thread13 3/8" BTCMax. OD. (mm)Φ381ID OF Body. (mm)Φ317Length of first-stage plug (mm)530Length of free-fall opening plug (mm)500Length of closing plug(mm)303Overall Length (mm)1032

Our team
Zhengzhou Maierda Petroleum Equipment Co., Ltd., located in Central China, is a professional supplier of oilfield equipment and tools.
Our factories has more than 15 years experiences of manufacturing oilfield equipment and tools.
Our sales team has more than 10 years importing exporting experiences in oil & gas industry.
Our products
We are specialized in such as casing centralizers, float collars and float shoes, cementing plugs, cement baskets, cementing heads, stage collars, sucker rods, drill pipes, drill collars and pumping units
our products are well sold in Mideast, North America, Latin America, Central Asia, Southeast Asia, Russia, North Africa, etc.
We are committed to providing high-quality and cost-effective products and services to our customers.
Our services
We guarantee and uphold the highest standards in customer service, client satisfaction, and quality product delivery in the oilfield industry. We are professional in many kinds of casing centralizers, float collars and float shoes, cementing plugs, cement baskets, cementing heads, stage collar, sucker rods, drill pipes, dill collars, etc.
Let's join hands and work together to create a better future!