FOR SURFACE MOUNTED BLOWOUT PREVENTER (BOP) STACKS
PRINCIPLE DESCRIPTION
A special equipment which is used to control BOP, hydraulic choke and kill lines, and indispensable equipment for blowout prevention during drilling or rebuilding well in oil and natural gas industry. The BOP Control Systems are all strictly designed, manufactured and inspected in accordance with China National Standard SY/T5053.2 & API Spec.16D. Type selection, proper installation, connection and maintenance of control system must depend on OPERATION MANUAL
The system is equipped with two pump groups. Electric pump with different flow rate, and pneumatic or manual pump which ensure the system to work normally in case of power failure. The design of accumulator unit meets the requirement of closing all BOP stacks and opening hydraulic valve. It any accumulator fails to work, the total liquid loss will not exceed 25%. we can offer the accumulator with ASME or CE mark that complies with the requirements of API Spec.16D in request of customers’ special requirements. The pressure of annular preventer circuit in control system may be adjusted by pneumatic regulator, It characters reverse adjusting. In case of sudden failure of air supply, the pressure can be reset to the preset value automatically. The control manifold of the remote control panel is equipped with an orifice as an inlet of the pressure source. For example. the spare nitrogen system offered by us provides emergent auxiliary energy. If the accumulator of the pump can not provide the control manifold
with enough power fluid, the spare nitrogen system may be used to provide high pressure air to close the preventer. The spare nitrogen system may provide emergency air supply for the driller’s panel and the auxiliary remote panel.
The system can be equipped with an alarm device. It monitors the accumulator pressure, air supply pressure and the liquid level in the oil reservoir. When the above parameters exceed the alarm limits, the audible and visual signal will appear immediately.
The auxiliary remote panel and wireless auxiliary remote panel can be equipped with to monitor the remote control panel. The auxiliary control panel is connected to the remote control panel with air hose bundle or cable. Therefore, the system can be operated
and monitored from both driller’s panel and auxiliary remote panel. Wireless auxiliary remote panel, which communicates with remote control panel by wireless signal, also can be suppied. It can improve the safety of drilling.
The system can be equipped with electric heating device of oil reservoir and air hose bundle. The system can also be equipped with a metal enclosure with explosion-proof electrical heater,explosion-proof air-conditioner and steam line in the skid.
MAIN SPECIFICATIONS FOR BOP CONTROL SYSTEM
MAIN SPECIFICATIONS FOR BOP CONTROL SYSTEM
FUNCTION FOR BOP CONTROL SYSTEM
FUNCTION FOR BOP CONTROL SYSTEM
Remarks:
- Mark ” ” in the table refers to standard components and mark ” ” in the table refers to optional components.
- Blank in the table means that it can be designed and manufactured in accordance with the customers special requirement.
3.Ant-lifting safety Device is specially designed for deep drilling, FT-l for one pipe ram preventer control system and FT-ll for two pipe ram preventers control system.
KEY POINTS OF BOP CONTROLSYSTEM SELECTION
To control BOP reliably and safely as well as prevent uncontrollable blowout, oil & natural gas industry standards SYT5053.2 and API Spec.16D should be followed when you choose and purchase a suitable product.Factors to be considered should at least be:
- Relationship between liquid volume required for closing BOP stacks and liquid volume available from the control system;
- Relationship between liquid volume used to close one annular BOP, open the hydranlically operated choke valve(s), and capacity of pump system;
- Environmental adaptation;
- Special requirements on off-shore drilling platform.
- Options for Controlled objects and Useful Liquid Volume
Useful liquid volume from an accumulator group shall be 2 times greater than the required volume of closing BOP stacks.
- Requirements for Control System Liquid Volume Used to Close an Annular BOP and Open Choke (Valves)
With the accumulators isolated from service and with one pump systems or one power system out of service, the remaining pump system(s)shall have the capacity to close one annular BOP and open choke valve(s) within two minutes.
- Environmental Adaptation
Conventional OP control system is only suit for ambient temperature of – 13’℃~50℃.When ambient temperature goes beyond, a house made of steel sheet and equipped with thermal insulation and temperature control should be used:
- A steel sheet house with thermal insulation and heating is suitable for ambient temperature above -40℃;
- A steel sheet house with thermal insulation and cooling is suitable for ambient temperature below 60℃;
- Hose bundle for remote control is suit for -4o’℃~-50℃.However, when ambient temperature goes below 0℃, dry compressed air must be used otherwise the hose would fail to work because of blocked due to moisture freezing.
- Special Requirement on Control System for Off-Shore Drilling Platform
According to Oil & natural gas industry standard, driller’s panel for of-shore platform (without workover) shall be equipped with audible and visual alarms to indicate the conditions of:
- Low accumulator pressure;
- Low liquid level in oil reservoir;
- Low pressure of compressed air source;
- In addition, moisture proof,corrosion resistance should be considered seriously. And back-up power source in use (electric control series).
MODEL ILLUSTRATION
ANI-LIFING SAFEY DEVICE
PRINCIPLE DESCRIPTION
The ANTI-LIFTING SAFETY DEVICE FT-I and FT-lI are suitable for brake of killing well at the mouth of a well.
Hydraulic BOP stacks are important and used widely for preventing blowout during petroleum
exploratory development. But the imitation of design and human’s factors cause possibly wrong operation and damage to the casing and drilling equipment after BOP is closed. Factually, the accidents arise at times in the oil field and result in a good deal of losses.
The ANTI-LIFTING SAFETY DEVICE supplied by us has an advantage of convenient installation, easy operation and reliable performance.It can protect against damaging rams, casing and drill pipe because of lifting the drill pipe after the pipe rams has been closed.
