Huichi Petro Oilfield Drilling Stop Collar For Secure Downhole
Operations Top Thread Fixed Screw Snap-On 4-1/2 Quot To 20 Quot
Sizes
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Product Overview
Stop Collar is an important component in oilfield drilling
operations to ensure the safe and stable operation of equipment.
During the drilling process, various drilling tools, pipe strings,
etc. need to be accurately positioned and limited in specific
positions to prevent them from excessive movement, falling off or
damaging other equipment. The limit ring is tightly installed on
the drilling tool or pipe string, and uses its own structural
characteristics to provide reliable position restrictions for the
equipment to ensure the accuracy and safety of drilling operations.
For example, during the drilling process, the limit ring can
prevent excessive de-down or lifting of the drill rod, avoid
equipment collisions and in-well accidents caused by operating
errors, and effectively ensure the smooth progress of oilfield
drilling operations.
Product category: Standard type limit ring, thickened type limit ring, adjustable
type limit ring.
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Working Principle
The working principle of Stop Collar is mainly based on its
internal locking mechanism. When the drill string is down into the
well and reaches a predetermined position, the locking mechanism of
the Stop Collar automatically locks on the drill string, thereby
limiting the axial movement of the drill tool. During the drilling
process, even if complex geological conditions or emergencies are
encountered, Stop Collar can ensure the stability of the drilling
tool and prevent accidents.
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Product Specifications
The Stop Collar products produced and sold by Huichi petro are
diverse in specifications, covering the range of common drilling
tools and pipe column sizes in the oil field. From smaller diameter
tool tube strings to large drill rods, there are corresponding
specifications of limit rings to choose from. At the same time,
non-standard specification limit rings can be customized according
to customers' special needs to meet the diverse oilfield drilling
operations needs.
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Core Functions And Features
- Accurate positioning and fixing
- Mechanical locking: Built-in zigzag or hydraulic drive lock block, adapted to API
standard sleeve (5″-13⅜″), which can quickly fix the tool positions
of the straightener, packer and other tools to prevent displacement
during operation.
- Repeatable adjustment: supports manual or hydraulic unlocking, flexibly adjust tool
position, and adapt to the operation requirements of straight,
horizontal and large-slope wells.
- High pressure resistance and corrosion resistance
- It is made of chromium molybdenum steel or nickel-based alloy,
which withstands high temperature (-30℃ to 150℃), high pressure
(≤10000psi) and acidic media environment, and extends the service
life of the underground.
- Modular design
- The split structure is easy to install and disassemble quickly, and
is adapted to mainstream casing sizes and drilling tools (such as
Weatherford, Halliburton straighteners), reducing maintenance
costs.
- Efficient compatibility
- It can be combined with continuous oil pipe (CTU) or conventional
drilling rod operations, and supports multi-scenario applications
(correction, repair, and abandonment and sealing) to improve
operation continuity.
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Technical Parameters
- Applicable casing type: API standard casing (J55, K55, N80, P110, etc.)
- Working pressure: ≤10000psi
- Temperature resistance range: -30℃ to 150℃
- Adaptation tools: casing straightener, hydraulic disassembly and assembly frame
(maximum torque of 300kN·m)
- Material standards: Comply with API Spec 5B, ISO 9001 quality certification
| Specifications (inch) | 20 | 13-3/8 | 10-3/4 | 9-5/8 | 8-1/8 | 7-5/8 | 7 | 6-5/8 | 5-1/2 | 5 | 4-1/2 |
| I. D. (mm) | 513 | 344 | 277 | 248 | 209 | 196 | 181 | 171 | 142 | 129 | 117 |
| O. D. (mm) | 527 | 356 | 288 | 259 | 222 | 208 | 192 | 182 | 151 | 139 | 126 |
| Height(mm) | 200 | 200 | 120 | 80 | 80 | 80 | 80 | 50 | 50 | 50 | 50 |
| Braking Force (kn) | 40 | 40 | 40 | 40 | 30 | 30 | 30 | 30 | 30 | 24 | 24 |
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Product Advantages
- Improve cementing quality: accurately fix the position of the straightener to ensure the
centering of the casing and reduce cement ring gap defects.
- Convenient operation: mechanical locking does not require complicated operations, strong
adaptability, saving working time by more than 20%.
- Economy and durability: High wear-resistant materials and modular design to reduce
unplanned downtime and maintenance costs.
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Application Scenarios
Stop Collar is widely used in drilling, well repair and other
operations in oil fields, especially when it is necessary to ensure
the stability of the drilling tool. Its safe and reliable locking
performance has been widely recognized and applied. include:
- Cement operation: Fix the position of the straightener, optimize
the casing centering, and improve the cement sealing effect.
- Well repair operation: Position the packer or bridge plug tool to
ensure the stability of downhole tools.
- Discard well sealing: Lock the position of the sealing material to
ensure the integrity and environmental compliance of the cement
plug.
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Notes
- When using Stop Collar, you must select the appropriate model and
specifications according to the well condition and operation
requirements, and install and operate strictly in accordance with
operating procedures.
- Regularly check the locking mechanism and wear of the Stop Collar
to ensure it is always in optimal working condition.
- If Stop Collar is found to be damaged or worn seriously, it should
be replaced in time to ensure safety of operation.
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After-sales Service
- Provides 24-hour global technical support and operation training,
covering major oil-producing areas such as the Middle East, North
America, and Southeast Asia.
- Replace non-human damaged parts for free during the warranty
period, and provide customized positioning solution design
services.
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Product display:
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Product package:
Product packaging: iron box or iron frame, wooden pallet, wooden
box, bulk or customized according to customer requirements.
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Product detection:
100% inspection will be carried out before shipment, and video
image data and inspection reports will be provided.
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Accepted delivery terms:
FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express
Delivery, DAF, DES.
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About HuiChi (HC) petro:
Shandong Huichi Industry & Trade is a professional supplier of
drilling equipment for the oil and gas industry. We are committed
to providing the best products and services to customers around the
world.
We HuiChi (HC) Petro always regard our customers as our partners
and aim to achieve long-term cooperation value. Our Huichi products
cover different fields such as oil fields, water wells, HDD, etc.
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Why choose HuiChi (HC) petro?
One-stop drilling equipment supply;
Employee engineers have more than 10 years of experience in
supplying drilling equipment;
More than 10 people engaged in export business;
More than 40 partner countries and regions;
More than 200 customers having close cooperative relationships;
More than 250+ partner factories as suppliers.
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Focus on well drilling equipment , we have been working hard and
hope to become your most professional oil & gas equipment supplier
and the best partner!
Sales Manager:Cherry Chi
Email: cherry@huichipetro.com
Mob/WhatsApp/We chat: +86 15553820372
