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BLOWOUT PREVENTER
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INTRODUCTION
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The main function of the Blow Out Preventer system (BOP System) is to close the drill hole when the "kick". Blowout occurred since the entry of formation fluid flow uncontrolled to the surface. Blowout is usually preceded by a "kick" which is a pressurized formation fluid intrusion into the drill hole. These intrusions can develop into a blowout if not addressed.
The series of blow out preventer system equipment (BOP System) consists of two main sub-components namely BOP Stack, accumulator and Support System ( Choke Manifold )
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DEFINITIONS
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Blowout preventer stack is the main wellhead pressure control equipment for oil and gas drilling, no matter onshore or offshore drilling. It consists of annular blowout preventer, single ram blowout preventer, double ram blowout preventer and drilling spool
The equipment (or valve) installed at the wellhead to contain wellbore pressure either In the annular space between the casing and the tubular or in an open hole during drilling, completion, testing, or work over operations for prevent the blow out accident.
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ANNULAR BLOWOUT PREVENTER
A device that uses an elastomeric packing unit to seal off pressure on a well bore with or without tubular in the bore.
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Structure Features
• Packing element is spherical or tapered type with massive storage volume, low operation pressure and excellent sealing function;
• Bonnet is hemispherical-shaped, so there is no stress concentration on bonnet whenever bearing the pressure.
• Bonnet and body are connected by a wedge block, so the pressure is evenly distributed;
• Packing element is interchangeable with similar overseas products;
• Use observation hole to check the life span of the packing element;
• Piston is set in low position to have a shorter moving distance; Use wear ring on piston
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Manufacturer & Type
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| HYDRIL |
SHAFFER –SPHERICAL |
TOWNSEND |
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RAM Blowout Preventer
A valve that uses metal blocks with integral elastomeric seals to seal off pressure on a well bore with or without tubular in the bore. There are two type of ram BOP single ram and double ram.
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Structure Features
• The pressure-bearing components are forged, so it has better strength and impact toughness;
• Floating sealing is applied to the cylinder cover and the open/close of the cover is realized by hydraulic power, so it is quick and convenient for changing rams;
• The auxiliary oil cylinder affords a smaller volume with same function;
• The standard configuration includes a manual locking device, which ensures the ram is closed tightly in case there is a hydraulic pressure loss;
• Both the manual and hydraulic locking device and the auxiliary oil cylinder can be installed flexibly into different positions according to customers’ requirements, and the installation positions can be changed easily.
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Manufacturer & Type
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FLOW CHART BOP REPAIR/REMANUFACTURE PROCESS
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PT. UMEGA MAJU BERSAMA
Our Service
1. To timely provide parts.soft goods (foreign vendor agent)
2. To provide services in inspection & testing in term of maintenance after/prior us
3. To do workshop repair, remanufacture and test
4. To perform MIGAS certification/recertification
Our Scope of Works
1. Repair, Recondition and Certification all of BOP
2. Remanufacture of drilling equipment
3. Migas re-certification
4. BOP rental
Facility and Equipment
1. Workshop
2. Lathe, VTL, HB Machine, etc
3. Stress relief furnace
4. Inspection tools & equipment
5. Testing equipment
6. Welding equipment
7. Hard chrome plating
8. Over Head Crane - 15 ton & 5 Ton
9. Testing Room
System and Administration
1. Quality/HSE Manuals
2. Procedures/work instructions/recording forms
Personnel Competency
Compentent and having more than 13 years experience inpairing & remanufacturing of drilling equipment.
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