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[China]
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Address: No.25, Gaoxin 6th Road, Hi-tech zone, Xi'an, China
Contact name:Lee M
XI‘AN ZZTOP OIL TOOLS CO.，LTD |
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API 16A Double Ram Blowout Preventer Operated Trouble Shots
Doule Ram BOP is a sort of well control BOP in oil well drilling operation, the hydraulic operated double Ram Bop is the important component of well drilling control equipment. The blowout preventer is designed and manufactured according to API 16A Specification.
Principle of Opening and Closing Operation
When pressure oil of hydraulic pressure system is pumped into the closing cavity of left and right cylinder, it pushes the piston with ram shaft and ram assembly to move to the center realize well sealing. When it pumped into the opening cavity of left and right cylinder, it pushes the piston with ram shaft and ram assembly to move to the center to open the wellhead. The conversion valve of hydraulic pressure system controls the ram switch; Ram switch force is direct ratio with the forced area of piston and the hydraulic pressure on this area.
Trouble Shots
Item
| Trouble | Cause | Settlement |
| 1 | The medium inside well flows out from the clearance between the body and door. | Seal ring between the body and side door is damaged. Connection bolts released between the body and side door. There is dust or damage on the body and side door seal surface. | Change damaged seal ring. Screw up all connection bolts. Remove surface dust and repair damaged parts.
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| 2 | Ram movement direction is not conformance with nameplate mark of control valve. | The pipelines between control panel and BOP have been connected wrongly. | Reverse pipes that connect BOP. |
| 3 | Hydraulic system is in order, but ram can not closed fully.
| There are foreign materials, sand and mud on ram contact ends. | Wash ram and side door. |
| 4 | The medium inside well flows into the cylinder and there contains water in cylinder oil. | Piston rod seal ring damaged. Piston rod distortion or surface scratch.
| Change damaged piston piston rod seal ring. Repair the damaged piston rod. |
| 5 | BOP hydraulic part cannot hold pressure.
| BOP cylinder, piston, piston rod, seal ring damaged, seal surface scratched. | Replace all damaged seal rings and repair seal surface or change it with the new parts. |
| 6 | There is leakage on side door connections. | Seal surface scratched, seal ring worn. | Repair seal surface and replace seal ring. |
| 7 | It cannot hold pressure when ram closed. | Ram seal rubber damaged. Upper seal surface of the ram chamber damaged. The ram size is not in accordance with the drilling tool in the well. | Change ram seal rubber. Repair seal surface. Change the relevant size ram. |
| 8 | Control pipe is in order, but ram cannot he opened with hydraulic pressure. | The locking shaft isn't unlocked. Ram plugged with sand and mud. Piston seal ring damaged. | Unlock locking shaft. If damaged, change it. Remove sand and mud. Increase control pressure. Change piston seal ring. |
About JC Wellhead
Jingcheng Petroleum Machinery Manufacturing Co.,Ltd was established in 2008, we are specialized in design and manufacturing of the oilfield wellhead equipment. We - YCJC are a registered supplier for CNPC, GWDC, CCDC in China.
* Strict quality control on raw material and machining, we can arrange the SGS or BV to witness the test
* We supply various wellhead products to meet the customers' operation.
* Timely delivery, professional service on export procedure,
* Product guarantee and best after-sales service.
Welcome to contact us for more information
