Fishing Mother Cone
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WhatsApp: 8615515833787 WeChat: 15515833787Product Name: Fishing Internal Taper Tap (Oil Drilling Fishing Tool)
Material: 40CrNiMoA / 35CrMo / 20CrMnTi alloy steel, quenched & tempered, HRC28–32, tensile strength ≥980MPa, nitrided surface for high wear and corrosion resistance, compliant with API 7-1 and GB/T 22245-2018.
Specification: Integral structure with upper sub and tapered internal fishing thread, Φ73–Φ244mm, tolerance ≤±0.05mm, thread accuracy up to 6H, customizable sizes available.
Connection Type: API standard threaded connection, CNC precision-machined for tight sealing and safe operation.
Features: High strength and toughness, wear-resistant, anti-corrosion, high fishing success rate (≥98%), fast operation, suitable for complex downhole conditions.
Applications: Oil & gas drilling, geological drilling, coal and water well operations for fishing stuck or broken tubular tools.
Packaging: Export wooden case with shock-proof protection.
MOQ: 5 pcs
Delivery Time: 7–15 days (3–7 days for stock)
Payment Terms: T/T or L/C, negotiable.
We provide full-spec customization for fishing internal taper taps based on your downhole conditions, type of stuck object (no internal bore, blocked bore, etc.), pipe size, and operational requirements. Materials (40CrNiMoA / 35CrMo / 20CrMnTi, etc.), body size, fishing thread type (standard or trapezoidal), length, and connection thread specifications can all be customized to suit complex environments such as high temperature, high pressure, and high corrosion conditions.
We also offer professional engineering consultation to optimize structure design and material selection according to fishing requirements. For highly corrosive environments, enhanced anti-corrosion treatment is available, and for hard formations, thread strength can be improved to ensure full compatibility with field operations. Bulk customization orders enjoy preferential pricing, along with dedicated NDT inspection reports and material certificates to ensure guaranteed quality.
|
Model |
Applicable Pipe Diameter (mm) |
Body Outer Diameter (mm) |
Length (mm) |
Application Scenarios |
|
Standard Model 1 |
73-89 |
95-108 |
500-800 |
Conventional Oil Pipe Fishing |
|
Standard Model 2 |
95-114 |
121-133 |
600-900 |
Conventional Drill Pipe Fishing |
|
Standard Model 3 |
127-140 |
146-159 |
700-1000 |
Medium Diameter String Fishing |
|
Standard Model 4 |
168-194 |
180-203 |
800-1200 |
Large Diameter String Fishing |
|
Standard Model 5 |
219-244 |
230-254 |
900-1500 |
Extra Large Diameter String Fishing |
|
Customized Model |
Customizable |
Customizable |
Customizable |
Special Falling Objects/Downhole Working Conditions (e.g., Falling Objects Without Inner Holes, High Corrosion Scenarios) |
✔High-strength alloy material, excellent durability: Made of 40CrNiMoA and 35CrMo alloy steel with quenching and tempering heat treatment. High hardness, tensile strength, and impact toughness, plus nitriding surface treatment for enhanced wear and corrosion resistance. Suitable for high-pressure, impact, and corrosive downhole environments with long service life and reduced replacement cost.
✔Extrusion fishing thread design, high success rate:Internal tapered thread uses an extrusion-type engagement design without cutting. It quickly bites into the outer wall of the fish, forming a strong connection with excellent tensile and torque resistance. Fishing success rate exceeds 98%, reducing operation time.
✔Precision structure, easy operation:Integral long-body design with high dimensional accuracy (≤±0.05mm) ensures smooth running. Marked upper sub for easy identification and operation, enabling fast running, engagement, and retrieval without complex tools.
✔Wide adaptability:Standard range Φ73–Φ244mm, with full customization available for different pipe sizes and downhole conditions, including no-bore or blocked-bore objects. Suitable for both onshore and offshore drilling operations.
✔International standard quality:Manufactured under API 7-1 and ISO 9001 systems with full NDT (UT/MT) inspection and certified reports, ensuring safe and reliable performance in complex downhole conditions.
The fishing internal taper tap is widely used in oil, gas, geological, coal, and water well drilling operations. It is designed for retrieving tubular objects such as drill pipes and oil pipes, especially for no-bore or blocked-bore cylindrical fish. It effectively handles downhole incidents such as sticking, dropping, or breaking, helping quickly restore normal drilling operations.
Typical applications include onshore and offshore oilfield fishing, deep geological drilling recovery, coal mine drilling pipe retrieval, and water well casing fishing. It is suitable for complex downhole conditions such as high temperature, high pressure, corrosion, and well deviation, making it an essential emergency fishing tool to reduce downtime and ensure operational safety.
