1.Casing head spools are provided with a seat for secondary sealing. The lower flange can be provided with a second smaller supplementary ring gasket allowing the maximum pressure build-off with one stage.
2.The casing spools used to suspend and to seal the casings. 3.The flanges and the passing inside diameters are designed according to API spec.6A.
Nominal Dimension of Top Flange (in)
Working Pressure of Top Flange (MPsi)
Surface Casing Dimension(in)
Nominal Diameter of Side Outlet (in)
1. Casing Head-Bottom Slip Connection Characteristics: (1) Connect surface casing by type WD slip. (2) Adopt type BT secondary seal structure. (3) Accurately calculate casing string's length is not necessary. (4) Can not be affected by surrounding environment, climate, etc. (5) Easy, rapid, safe and reliable in installation. Can apply to different sizes casing, such as: 30",20",13-3/8",12-1/4",9-5/8",7",5-1/2". Can apply to different sizes casing as:13-3/8",9-5/8",7",5-1/2"etc. We can manufacture a variety of bottom thread such as CSG, LCSG, BCSG, TM, for the connection between casing head and surface casing. 2. Casing Head-Bottom thread connection (1)Bottom of the casing head connects surface casing by various types of threads,such as CSG,LCSG,BCSG,TM,ETC. (2)Convenience and rapid in installation,safe and reliable in operation. 3. Casing Head-Bottom welded connection (1)Bottom of the casing head connects surface casing by welding. (2)There’s pressure test hole, which can test welding effect, in welding annular space. Bottom can be connected to surface casing by the method of sleeve welding.Pressure testing holes are designed for the test of welding effect.
Applied Casing Program:20",13-3/8",9-5/8",7",5-1/2", etc.
1,After the Technical Sales Engineer checking out, we can produce the items that you attach the drawings.
X-mas tree is the important equipment in the control of wellhead pressure and adjustment of flow control of oil(gas) in manufacturing of Oil (gas) well production operations.
2, It can be designed into common type and integral type according to customer's requests.
3,It can be equipped with hydraulic & pneumatic safety valve.
4, There are two types: single wing and double wing.
5, It can be also equipped with stop valve which has settled form and adjustable form according to customer's requests.
Packaging & Shipping
Our main products: Drill Equipment, Well control system,OCTG, Well head tools, camps,drill bit and spray head,drilling instruments, cementing, oil mining equipment, water well drilling rig and petrochemical products,Electric oil-submersible pump unit, QYYEQ Submersible power cables and so on.
Dongying Qixiang Import & Export Co.,LTD(DYQX Petro company)follow the principle of "quality first, science and technology innovated, people oriented",, it benefits from the convenient running, high efficiency, swift reaction, experienced experts and the advanced management. In a meanwhile, it has about 50 sub-contractors to cooperate all over the country, and it always sticks to good faith, strictness, specialty, innovation, also satisfactory service.our products have already been exported to USA, South America, Africa, Middle East, Russia and some other countries (regions).
Our Service Objective: People-O riented, Quality firstly and Best service.
Welcome to Visit DYQX petro.
Dongying Qixiang Import&Export Co.,Ltd
Address:North 2nd Road,Number 352,Dongying Zone, Dongying City, Shandong province, China.