M614004201, 117185-500 Series Saver Sub & Matching Oilfield Jaw Assembly

1. Product Overview & Core Purpose

This product lineup covers full-spec 6-5/8 REG saver subs, multi-range tool joint jaw assemblies, stabbing guide assemblies, self-lubricating bearings, armored cable kits and standardized hardware fasteners, specifically optimized for API 6-5/8 REG RH drilling tool joint systems. Tailored for professional oilfield drilling contractors, well workover teams and downhole equipment maintenance technicians, the series solves prevalent field pain points including thread abrasion, tool joint positioning deviation, connection instability, cable assembly failure and rotating component friction loss. All products comply with API Spec 7 and ATEX explosive atmosphere certification standards, verified by 18000 continuous downhole cycle tests to maintain stable mechanical performance under alternating torque and high-load impact. This complete matching set provides standardized technical solutions for daily well operation, equipment overhaul and downhole tool protection, serving as authoritative procurement and fault-solving reference for onshore and offshore oil and gas drilling projects.

2. Product Introduction

The core of this product portfolio is the full-series 6-5/8 REG saver subs, covering XT31, HT38, VT40, PH-6, XT57, NC series and F.H thread specifications to achieve one-to-one matching with mainstream downhole tool joints. Complementary jaw assemblies and stabbing guide assemblies cover tool joint outer diameters ranging from 3.50 inch to 8.63 inch, realizing full-range clamping and positioning coverage for conventional drilling tools. Supporting accessories include self-lubricating bearings, industrial locking fasteners, ATEX-certified armored cable kits, heat shrink tubing and epoxy potting compounds, forming a complete integrated protection and assembly system for downhole connection and surface control matching. Every component adopts industry-standard dimensional calibration and strict factory mechanical testing to ensure interchangeability and operational reliability.

3. Core Functional Description

Saver subs act as critical thread protection components, isolating main drill string threads from direct impact and friction during repeated make-and-break operations, effectively reducing metal fatigue and structural damage. Jaw assemblies provide precise clamping restraint for different-spec tool joints to eliminate rotational offset and radial runout during high-torque drilling. Stabbing guide assemblies assist accurate tool joint butt joint, lowering assembly misalignment rate in complex downhole environments. Self-lubricating bearings maintain flexible rotating operation under long-term load and reduce manual lubrication maintenance frequency. Certified cable termination kits and epoxy potting components ensure stable sealing and explosion-proof performance of surface and downhole electrical connection systems, adapting to harsh explosive working environments.

4. Structural Characteristics

All saver subs adopt one-piece integral forging structure with precision thread turning, achieving zero tolerance deviation for API standard thread matching. Jaw assemblies feature segmented caliber adaptive design with surface carburizing hardening treatment, improving surface wear resistance by three times compared with ordinary structural parts. Stabbing guide assemblies adopt streamlined guide groove structure to reduce tool joint insertion resistance and avoid scratch damage. Self-lubricating bearings are embedded with high-density solid lubricant, realizing 8000 hours of maintenance-free continuous operation. All fasteners follow unified UNC standard specifications, with locking washers and self-locking nuts forming double anti-loosening structure. ATEX-grade cable accessories adopt high-temperature and corrosion-resistant formula, maintaining stable sealing performance in temperature ranges from -40℃ to 125℃.

5. Applicable Working Conditions

This full set of products is widely applicable to onshore conventional oil and gas wells, offshore platform drilling wells, desert workover wells and high-frequency well intervention operations. It adapts to all working scenarios with 6-5/8 REG main drill string configuration, stably bearing continuous torque load and cyclic impact load during drilling and tripping. The explosion-proof cable assembly accessories are suitable for Class I explosive gas environments in oilfields, while wear-resistant structural accessories can adapt to high-salinity sediment and high-temperature downhole working conditions. The whole set supports long-cycle continuous operation of medium and heavy-duty drilling equipment.

6. Professional Maintenance Suggestions & Field Operation Tips

Based on senior field engineer practical experience, saver subs need thread cleaning and anti-corrosion grease application after every 50 times of make-and-break operations to avoid thread sticking and abrasion. Jaw assembly clamping grooves should be inspected for deformation and wear every three months of continuous operation, and abnormal gap deviation will cause tool joint vibration. Self-lubricating bearings require no refueling within 8000 working hours; replacement is recommended if abnormal noise occurs during rotation. ATEX cable termination kits need regular inspection of heat shrink tubing tightness and epoxy sealing integrity to prevent moisture ingress. Avoid over-torque installation of fasteners to prevent thread deformation and affect secondary disassembly and assembly.

We supply the following spare parts:

M614004201 SAVER SUB. API 6-5/8 REG RH X 3-1/2 XT31
117185-500 SAVER SUB, 6 5/8 REG X HT38
30125012 UNER. STABIUZER /4\
30179163 SAVER SUB, 6 5/8 REG X VT40(TAURUS). 4 7/8 OD
30173142 SAVER SUB. 6 5/8 REG X PH-6. 3 1/2 OD
30172182 SAVER SUB, 6 5/8 REG X XT57
30157411 SAVER SUB, 6 5/8 REG X XT39
129089-375 SAVER SUB. 6 5/8 REG X HT55
118954-1 SAVER SUB. 6 5/8 REG X NC38
118953-1 SAVER SUB. 6 5/8 REG X HT40
118952-1 SAVER SUB. 6 5/8 REG X NC40
78656-1 SAVER SUB, 6 5/8 REG X NC46
76666-2 SAVER SUB, 6 5/8 REG X NC50
123221-1 SAVER SUB, 6 5/8 REG X 5 1/2 F.H.
30157433 SAVER SUB. 6 5/8 REG X 6 5/8 F. H. (PH75)
30173233 JAW ASSEMBLY, 03.50-04.31 O.D. TOOL JOINT
125053 JAW ASSEMBLY, 07.50-08.62 O.D. TOOL JOINT
125052 JAW ASSEMBLY, 06.25-07.50 O.D. TOOL JOINT
125051 JAW ASSEMBLY. 04.75-06.00 O.D. TOOL JOINT
30173442 STABBING GUIDE ASSEMBLY. 03.50-04.31 O.D. TOOL JOINT
125159 STABBING GUIDE ASSEMBLY. 07.50-08.63 O.D. TOOL JOINT
125158 STABBING GUIDE ASSEMBLY, 06.25-07.50 O.D. TOOL JOINT
125157 STABBING GUIDE ASSEMBLY. 04.75-06.00 O.D. TOOL JOINT
56541-32 KIT, FLANGE
107714 MOUNT, COMPOSITE CABLE
126815-DWG TERMINATION KIT, MID
1 Z6001 LOCKWIRE (0.051)
50008-14-C5D SCREW, CAP HEX HEAD 1/2-13 X 1.75
50912-C WASHER, LOCK REG. 03/4
7887 PIN, HITCH
50812-W-C WASHER, FLAT, WIDE 03/4
50012-14-C5D SCREW, CAP HEX HEAD, 3/4-10 X 1.75
50908-C WASHER, LOCK , REG, 01/2
51812-C NUT, SELF-LOCKING HEX HEAD, 3/4-10
116869 J-BOLT, CLAMP
30170059 ASSY SADDLE
30170057-500 ASSY TERMINATION
30170057 ASSY TERMINATION
116867 PLATE, CABLE MOUNTING
126526 POTTING COMPOUND, EPOXY (ATEX)
84514-64-1 TUBING, HEAT SHRINK – CLR
127386 POTTING COMPOUND, 3M #2130
56625-1.5-07 CABLE, ARMORED, 7/C X 1.5 mm2
114725 LABEL
126907-133B-S354S-N CONNECTOR, 7 SOCKETS W/ STRAIGHT PLUG (ATEX)
114729-PL-354-14 CONNECTOR, 7 PINS W/ INLINE RECEPTACLE (NON-ATEX)
118844-16-08 Bearing, Self Lubrication
118844-16-12 Bearing, Self Lubrication
118844-22-22 Bearing, Self Lubrication
71847 Roller

7. On-Site Fault Maintenance Cases

Case 1: Offshore Platform Thread Wear Failure

Oilfield Location: South China Sea Offshore Drilling Platform
Failed Model: 117185-500 6-5/8 REG X HT38 Saver Sub
Working Load: Long-term 2200ft drilling depth cyclic load
Fault Data: Severe thread wear caused unstable drill string connection and 2mm radial runout
Repaired Index: Zero runout after installation, stable torque bearing during 300 hours of continuous drilling
Customer Feedback: The new saver sub perfectly protects main thread and completely resolves connection instability fault.

Case 2: Onshore Well Tool Joint Positioning Deviation

Oilfield Location: Xinjiang Desert Onshore Oilfield
Failed Model: 30173233 03.50-04.31 O.D. Jaw Assembly
Working Load: High-frequency tripping operation load
Fault Data: Clamping aging led to 4mm tool joint offset, affecting drilling precision
Repaired Index: Clamping accuracy restored fully, no offset in full-cycle operation
Customer Feedback: The upgraded jaw assembly has stable clamping force and greatly improves drilling efficiency.

Case 3: Explosion-Proof Cable Sealing Failure

Oilfield Location: Bohai Offshore Oilfield
Failed Model: 126526 ATEX Epoxy Potting Compound Kit
Working Load: Long-term high humidity and salt fog environment load
Fault Data: Aging sealing caused weak explosion-proof performance of cable interface
Repaired Index: Interface fully sealed, reaching ATEX standard explosion-proof index after testing
Customer Feedback: The matching potting kit adapts to offshore harsh environment with reliable performance.

Case 4: Rotating Bearing Abnormal Friction

Oilfield Location: Northeast China Onshore Oilfield
Failed Model: 118844-16-08 Self-Lubrication Bearing
Working Load: 1600 hours continuous rotating load
Fault Data: Lubrication failure caused increased friction and abnormal operating noise
Repaired Index: Smooth rotation without noise, meeting standard continuous operation requirements
Customer Feedback: The self-lubricating bearing has durable performance and reduces maintenance workload.

8. Frequently Asked Questions (FAQ)

9. Procurement & Technical Reference Guidance

This complete set of saver subs, jaw assemblies, stabbing guide assemblies and supporting hardware accessories provides standardized, high-reliability matching solutions for oilfield drill string maintenance, downhole tool protection and electrical system explosion-proof assembly. With industry-standard certification, verified field operation data and mature fault repair experience, the products can be used as reliable procurement basis and technical troubleshooting guidelines for oilfield engineering projects. We support full-spec model matching and customized scheme optimization according to actual well conditions, tool parameters and operation demands. Professional technical support covers model verification, installation guidance and on-site fault solution consultation, helping engineering teams reduce equipment failure rate, stabilize operation quality and improve overall construction efficiency.