Product Overview
The Up-Stroke Hydraulic Jar is a hydraulic delay type single-action upward impact fishing jar, specially developed for coiled tubing heavy workover operations such as stuck pipe release, junk fishing, drilling, sidetracking directional drilling and casing cutting.
This single upward stroke hydraulic jar adopts mature industry standard hydraulic delay buffer mechanism. Operators can generate controllable upward jarring impact only by lifting upward the coiled tubing string on surface; the tool does not produce downward jarring impact when slacking off tubing weight. No pre-well setting, calibration or mechanical adjustment work is required before running the tool string into wellbore. The magnitude of upward jarring impact force is positively proportional to the upward lifting load applied on surface, construction personnel can flexibly adjust upward impact strength according to downhole stuck severity and formation bearing capacity.
The tool is designed with a full large-diameter internal through bore, the wide unobstructed inner flow passage provides smooth channel for operation drop balls, allowing drop balls to freely pass through the up-stroke hydraulic jar body to actuate other downhole functional tools without flow blockage risk. When matched and combined with the supporting hydraulic accelerator, the accelerator can effectively store and release elastic impact energy, significantly amplify the upward jarring impact force output of the hydraulic jar, greatly improve the success rate of releasing stuck tubing, fishing junk and other downhole stuck treatment operations.
The Up-Stroke Hydraulic Jar is widely applicable to multiple coiled tubing heavy workover construction scenarios: directional drilling, sidetracking drilling, casing/tubing cutting, downhole metal junk fishing and stuck pipe release intervention operations.
The standardized product lineup covers outer diameter sizes ranging from 1-3/4" to 3-1/8", with matched closed make-up length and fixed stroke specifications, equipped with standard 1"AMMT, 1-1/2"AMMT, 2-3/8"PAC and 2-3/8"REG bottom connection threads for universal compatibility with mainstream coiled tubing connectors, hydraulic accelerators, fishing necks and other downhole workover service tools. Custom outer diameter, stroke length and hydraulic delay structural parameter customization are available upon customer technical drawing submission.
Complete Technical Specification Table
| PN Part Number | Outer Diameter OD | Inner Diameter ID | Make-Up Length (Closed) | Stroke | Working Condition Grade | Bottom Connection Thread |
|---|---|---|---|---|---|---|
| L3141750120 | 1-3/4" | 0.55" | 43" | 5" | STD Standard | 1" AMMT |
| L3142125120 | 2-1/8" | 0.75" | 45" | 6" | STD Standard | 1-1/2" AMMT |
| L3142875120 | 2-7/8" | 1" | 50" | 6" | STD Standard | 2-3/8" PAC |
| L3143125120 | 3-1/8" | 1.26" | 50" | 6" | STD Standard | 2-3/8" REG |
Note: Custom outer diameter, customized stroke length and hydraulic delay structural parameter modification up-stroke hydraulic jars are available via engineering consultation.
Core Features & Advantages
Mature Hydraulic Delay Single-Way Upward Jarring Mechanism: Industry proven hydraulic delay buffer design, only realize controllable upward jarring impact through simple surface lifting tubing operation, no downward impact stroke, stable delay buffer performance to avoid sudden out-of-control upward impact force.
Zero Pre-Run Adjustment Operation Design: No mechanical setting, calibration or parameter adjustment work needs to be completed before running the tool string into wellbore, simplify wellsite pre-job preparation procedures and reduce on-site operation time cost.
Impact Force Adjustable by Surface Lift Load Control: The output upward jarring impact energy is positively correlated with the upward lifting load applied on surface, construction crews can flexibly increase or reduce upward impact strength according to actual downhole stuck severity and formation bearing capacity.
Full Large Internal Through Bore Structure: The tool body reserves wide unobstructed inner through passage, the large inner diameter can allow various specification operation drop balls to smoothly pass through the hydraulic jar without flow blockage, compatible with drop ball actuation of other downhole tools in the same string.
Perfect Matching Hydraulic Accelerator Supporting Solution: Can be assembled in tandem with dedicated hydraulic accelerator as a complete upward jarring workover string; the accelerator stores elastic energy during lifting stroke and releases instantly during upward jarring action, greatly amplify upward impact strength to significantly improve stuck pipe release and junk fishing success rate.
Wide Multi-Scenario Heavy Workover Application: Adaptable to full series coiled tubing heavy intervention construction including directional drilling, sidetracking drilling, tubing/casing cutting, downhole metal junk fishing and stuck pipe release workover operations.
Full Outer Diameter Size Compatibility: Standard product series covers 1-3/4", 2-1/8", 2-7/8" and 3-1/8" outer diameter specifications, fully compatible with global mainstream medium-size coiled tubing assemblies for all single upward jarring fishing, drilling and cutting intervention demands.
Multi-Type Standard Thread Compatibility: All product models are equipped with universal 1"AMMT, 1-1/2"AMMT, 2-3/8"PAC and 2-3/8"REG bottom connection threads, realizing seamless assembly with global mainstream coiled tubing bottom-hole assemblies, hydraulic accelerators and fishing tools without extra conversion subs.
Precision CNC High-Strength Alloy Manufacturing: Adopts precision CNC machining integral tool body, hydraulic delay piston assembly, upward impact energy transmission matching components, featuring outstanding high-pressure fluid erosion resistance, repeated upward impact fatigue resistance and structural stability, extending long-term continuous single upward jarring heavy workover service life.
Application Scenarios
1. Coiled tubing heavy-load downhole intervention upward jarring treatments including stuck tubing release, downhole metal junk fishing, directional drilling, sidetracking directional drilling and production tubing/casing cutting rotary construction operations
2. Conventional sweet crude oilfield single upward stroke hydraulic delay jar upward impact fishing heavy workover service (STD standard service grade)
3. Downhole stuck pipe & junk fishing heavy workover projects requiring single-way controllable upward hydraulic jarring impact, compatible with drop ball actuation tool strings and matched hydraulic accelerator for upward impact energy amplification
4. Long-term continuous repeated single upward impact jarring safety protection for coiled tubing bottom-hole assemblies in onshore and offshore oilfield fishing, drilling and cutting heavy workover intervention projects
Standard Delivery Package
Complete up-stroke hydraulic jar integral pre-assembled unit including hydraulic delay piston buffer assembly, single-way upward impact energy transmission structure and standard bottom connection thread
Full factory inspection test report including repeated single upward impact fatigue resistance test, integral tensile load test, hydraulic delay stroke buffer performance calibration test and inner through bore drop ball passing smoothness test data
Product dimension drawing and official installation & operation instruction manual, with detailed operation guidance for matching hydraulic accelerator tandem assembly
Quality Warranty & After-Sales Service
Warranty Coverage: 12 months after factory shipment or 2000 cumulative upward jarring impact cycles, whichever condition is reached first
Full factory inspection: Each finished up-stroke hydraulic jar passes integral tensile load test, repeated single upward impact cycle fatigue test, hydraulic delay stroke buffer calibration test and inner bore drop ball passing smoothness test before factory delivery
Free professional technical support: Our oilfield downhole tool engineering team provides coiled tubing fishing heavy workover tool string matching, outer diameter & stroke length selection and hydraulic accelerator tandem assembly matching consultation free of charge
Long-term spare parts supply: All hydraulic delay piston and upward impact transmission wear accessories are stocked with competitive factory bulk pricing
Custom development service: Support custom outer diameters, customized stroke lengths, hydraulic delay structural parameter modification, bottom thread profiles and special size up-stroke hydraulic jars based on customer technical drawings
FAQ
Q1: What is the core function of an Up-Stroke Hydraulic Jar??
The Up-Stroke Hydraulic Jar is a hydraulic delay single-action upward impact fishing jar for coiled tubing workover. It uses a hydraulic delay mechanism to generate upward jarring impact only when lifting the tubing string; no downward jarring stroke is available. No pre-run setting or adjustment is required before running into the well. It features a full large through bore allowing drop balls to pass through, and can be combined with a hydraulic accelerator to amplify upward impact force. It is widely used for directional drilling, sidetracking drilling, tubing cutting and downhole junk/stuck pipe fishing operations.
Q2: What three core structural advantages does this up-stroke hydraulic jar own??
1. Mature hydraulic delay single-way upward jarring design, only controllable upward impact generated via simple surface lifting operation, no downward impact stroke, stable hydraulic buffer performance to avoid uncontrollable sudden upward impact force; 2. Zero pre-well adjustment operation design, no mechanical setting or calibration work needed before running the tool string into wellbore, greatly simplifying wellsite pre-job preparation work and saving construction preparation time; 3. Full large internal through bore structural design, wide unobstructed inner passage enables all common specification operation drop balls to smoothly pass through the jar body without flow blockage, compatible with drop ball actuation of other functional tools in the same workover string.
Q3: What outer diameter sizes do these up-stroke hydraulic jars support??
Our standard production lineup fully covers outer diameters: 1-3/4", 2-1/8", 2-7/8" and 3-1/8". All models adopt universal 1"AMMT, 1-1/2"AMMT, 2-3/8"PAC and 2-3/8"REG bottom connection threads compatible with global mainstream coiled tubing connector assemblies, hydraulic accelerators and fishing downhole tools.
Q4: What is the standard production lead time for bulk purchase orders??
All standard PN part numbers are kept in factory inventory, goods can be delivered within 7–15 working days. Customized up-stroke hydraulic jars with special outer diameters or customized stroke/hydraulic delay structural parameters require 20–35 working days production cycle, subject to total order quantity and customization scope.
Get Custom Datasheet & Factory Quote
We are a professional OEM & ODM manufacturer focused on full series coiled tubing heavy workover and washing downhole service tools, covering bi-direction hydraulic accelerators, bi-direction hydraulic jars, up-stroke hydraulic jars, bi-direction mechanical jars, up-stroke mechanical jars, thru tubing cutters, high expansion four-blade hydraulic anchors, annular grapple hydraulic anchors, heavy duty motorhead assemblies, concentric coiled tubing wash tools (multi-mode), concentric coiled tubing wash tools (single mode), slimline wash tools (double dart), slimline wash tools (double flapper), storm wash tools, low speed spinning jetting tools, multiple points rotary wash tools, fast rotary wash tools, conical wash tools, multi-nozzle wash tools, bull nose wash tools, big ID large bore motorhead assemblies, heavy duty integrated motorhead assemblies, big ID hydraulic disconnects, dog latch interchangeable piston hydraulic disconnects, heavy duty high torsion hydraulic retrievable disconnects, mechanical hydraulic dual-action disconnects, mechanical adjustable shear tension disconnects, dual activated dual-action circulation valves, ball activated shear pin circulation valves, burst disc pressure circulation valves, double dart dual-stage sealing check valves, double flapper dual-stage sealing check valves, big ID single flapper check valves, grapple dimple composite connectors, grub screw heavy-duty connectors, double dimple-on connectors, single dimple-on connectors, double roll-on connectors, single roll-on connectors, internal grapple connectors, external grapple connectors, logging heads and tubing hangers. Every finished product undergoes strict factory tensile load, repeated hydraulic spring compression fatigue, stroke travel calibration and synchronous energy release impact amplification performance testing, with complete material inspection certification attached to each shipment. Please share your detailed technical requirements, including target outer diameter size, required stroke length, matched jar model, working environment and all customized specification demands. Our dedicated oilfield downhole tool engineering team will send complete detailed technical datasheets and competitive factory wholesale quotations within 24 business hours, and provide professional tandem assembly connection matching guidance for combination with matched jar tools.
