Product Overview
The Impact Hammer bi-directional high-frequency reciprocating downhole shock jar is a reciprocating shock load generation tool specially developed for coiled tubing continuous through-tubing remedial workover operations.
The impact hammer adopts bidirectional reciprocating shock structural design, which can generate continuous high-frequency upward and downward reciprocating impact force; the powerful reciprocating shock load can efficiently break down and clear thick paraffin wax layers, hard mineral scale deposits attached to the inner wall of production tubing, realizing rapid downhole paraffin cleaning and scale removal operations. In addition, the high-frequency bidirectional reciprocating impact force output of the impact hammer can also be applied to multiple downhole operation scenarios: sliding sleeve shifting actuation, stuck downhole fish retrieval and bridge plug / cement plug milling grinding auxiliary construction work. The whole tool body adopts full metal-to-metal hermetic pressure sealing structure; all sealing mating contact surfaces adopt all-metal hard contact sealing form, which can realize stable reliable high-pressure fluid sealing performance under complex downhole corrosive fluid working environments, effectively preventing internal high-pressure fluid leakage failure.
The Impact Hammer has no complex internal movable friction components, spring energy storage assemblies or differential pressure release mechanisms, with extremely simplified wellsite operation flow and low maintenance cost; construction crews only need to run the impact hammer down along the tubing inner wall to the target downhole operation section, start the surface circulation pump to drive the internal reciprocating impact mechanism to generate continuous high-frequency bidirectional up/down shock load, to complete paraffin wax breaking & cleaning, mineral scale removal, sliding sleeve shifting or stuck fish retrieval construction work, no additional auxiliary operation steps such as drop ball delivery or shear pin impact jarring are needed, shortening wellsite operation time and reducing human error risks.
The standardized product lineup covers outer diameter sizes ranging from 1-11/16" to 3-1/8", with complete outer diameter specification series to match different tubing inner diameter constraint conditions and different downhole remedial workover construction demands. Each specification adopts standard working condition configuration; custom outer diameter, bidirectional impact frequency grade and base material corrosion resistance grade customization are available upon customer technical drawing submission.
Complete Technical Specification Table
| PN Part Number | Jar Direction | OD Outer Diameter | Reaming Range | Make-Up Length | Working Condition Grade | Connection Thread |
|---|---|---|---|---|---|---|
| L50416901201 | Up / Down Bidirectional | 1-11/16" | 0.47" | 22.3" | STD Standard | 1" AMMT |
| L50416901202 | Downward Single Direction | 1-11/16" | 0.47" | 22.3" | STD Standard | 1" AMMT |
| L50421251201 | Up / Down Bidirectional | 2-1/8" | 0.64" | 24" | STD Standard | 1-1/2" AMMT |
| L50421251202 | Downward Single Direction | 2-1/8" | 0.64" | 24" | STD Standard | 1-1/2" AMMT |
| L50428751201 | Up / Down Bidirectional | 2-7/8" | 0.74" | 24" | STD Standard | 2-3/8" PAC |
| L50428751202 | Downward Single Direction | 2-7/8" | 0.74" | 24" | STD Standard | 2-3/8" PAC |
| L50431251201 | Up / Down Bidirectional | 3-1/8" | 0.8" | 25.2" | STD Standard | 2-3/8" REG |
| L50431251202 | Downward Single Direction | 3-1/8" | 0.8" | 25.2" | STD Standard | 2-3/8" REG |
Note: Custom outer diameter, bidirectional reciprocating impact frequency grade and base material corrosion resistance grade modification bi-directional reciprocating impact hammers are available via engineering consultation. Two impact direction options (Up/Down bidirectional shock / Downward single-direction shock) are optional for each outer diameter size, and the impact direction needs to be clearly confirmed according to downhole operation construction demands during order placement; multiple standard connection thread specifications (AMMT / PAC / REG) are matching options for each model to adapt to different coiled tubing tool string connection matching demands.
Core Features & Advantages
High-Frequency Bidirectional Up/Down Reciprocating Shock Load Generation Design: The impact hammer adopts bidirectional reciprocating shock structural design, which can generate continuous high-frequency upward and downward reciprocating impact force; the powerful reciprocating shock load can efficiently break down and clear thick paraffin wax layers, hard mineral scale deposits attached to the inner wall of production tubing, realizing rapid downhole paraffin cleaning and scale removal operations.
Full Metal-to-Metal Hermetic Pressure Sealing Structural Design: The whole tool body adopts full metal-to-metal hermetic pressure sealing structure; all sealing mating contact surfaces adopt all-metal hard contact sealing form, which can realize stable reliable high-pressure fluid sealing performance under complex downhole corrosive fluid working environments, effectively preventing internal high-pressure fluid leakage failure.
Multi-Scenario Multi-Function Downhole Operation Application Design: The high-frequency bidirectional reciprocating impact force output of the impact hammer can also be applied to multiple downhole operation scenarios: sliding sleeve shifting actuation, stuck downhole fish retrieval and bridge plug / cement plug milling grinding auxiliary construction work, realizing multi-purpose single tool configuration to reduce downhole tool string tripping frequency and improve overall construction efficiency.
Full Outer Diameter Size Range Coverage: The applicable outer diameter size range of the bi-directional reciprocating impact hammer covers 1-11/16" to 3-1/8", with complete outer diameter specification series to match different tubing inner diameter constraint conditions and different downhole remedial workover construction demands.
Ultra-Simplified Wellsite Operation Logic: The impact hammer has no complex internal movable friction components, spring energy storage assemblies or differential pressure release mechanisms, the operation flow is highly streamlined: only need to run the impact hammer down along the tubing inner wall to the target downhole operation section, start the surface circulation pump to drive the internal reciprocating impact mechanism to generate continuous high-frequency bidirectional up/down shock load, to complete paraffin wax breaking & cleaning, mineral scale removal, sliding sleeve shifting or stuck fish retrieval construction work, no complex auxiliary operation steps such as drop ball delivery or shear pin impact jarring are needed to shorten wellsite operation time and reduce human error risks.
Low Routine Maintenance Design: The integral cylindrical alloy steel tool body eliminates vulnerable split assembly movable wear parts; after each downhole remedial workover operation, only simple surface paraffin/scale deposit cleaning and internal metal-to-metal sealing contact surface wear inspection are required, no complex disassembly, internal reciprocating impact mechanism component replacement or spring preload adjustment maintenance procedures, greatly reducing daily maintenance labor and spare parts inventory cost.
Application Scenarios
1. Coiled tubing continuous through-tubing downhole paraffin wax cleaning, mineral scale deposit removal, sliding sleeve shifting actuation and stuck downhole fish retrieval heavy-load intervention treatments, including paraffin wax layer blockages, hard mineral scale deposits, sliding sleeve position adjustment and stuck metal fish obstacles remedial workover construction operations
2. Conventional sweet crude oilfield high-frequency bi-directional reciprocating impact hammer paraffin cleaning, scale removal and sliding sleeve shifting remedial workover service (STD Standard carbon steel working condition grade)
3. High-sulfur H₂S containing corrosive downhole wellbore fluid construction project paraffin cleaning and scale removal heavy workover projects requiring H₂S sour service anti-sulfide stress cracking high-corrosion-resistant alloy material grade
4. Long-term continuous repeated reciprocating impact shock load safety protection for coiled tubing bottom-hole assemblies in onshore and offshore oilfield continuous through-tubing paraffin cleaning, scale removal and sliding sleeve shifting remedial workover intervention projects
Standard Delivery Package
Complete bi-directional reciprocating impact hammer integral cylindrical pre-assembled unit including main tool cylinder body, internal reciprocating impact drive mechanism and full metal-to-metal hermetic pressure sealing contact surfaces
Spare interchangeable metal-to-metal sealing contact surface wear maintenance kit for on-site worn metal hard sealing layer replacement
Full factory inspection test report including repeated reciprocating impact shock load fatigue resistance test, integral tensile load test, full metal-to-metal hermetic high-pressure fluid sealing performance calibration test and bidirectional up/down reciprocating impact frequency verification test data
Product dimension drawing and official installation & operation instruction manual, with detailed on-site coiled tubing paraffin cleaning, scale removal and sliding sleeve shifting operation guidance, with clear confirmation reminder for impact direction selection (Up/Down bidirectional shock / Downward single-direction shock) and bidirectional reciprocating impact frequency grade confirmation according to different downhole operation construction demands during order placement
Quality Warranty & After-Sales Service
Warranty Coverage: 12 months after factory shipment or 2000 cumulative reciprocating impact shock load cycles, whichever condition is reached first
Full factory inspection: Each finished bi-directional reciprocating impact hammer passes integral tensile load test, repeated reciprocating impact shock load fatigue test, full metal-to-metal hermetic high-pressure fluid sealing performance calibration test and bidirectional up/down reciprocating impact frequency verification test before factory delivery
Free professional technical support: Our oilfield downhole tool engineering team provides coiled tubing paraffin cleaning, scale removal and sliding sleeve shifting remedial workover tool string matching, outer diameter & working condition grade (STD / H₂S) selection and bidirectional reciprocating impact frequency grade selection consultation free of charge
Long-term spare parts supply: All interchangeable metal-to-metal sealing contact surface wear accessories are stocked with competitive factory bulk pricing
Custom development service: Support custom outer diameters, customized bidirectional reciprocating impact frequency grade specifications, base material corrosion resistance grade modification, bottom coiled tubing connection thread profiles and special size bi-directional reciprocating impact hammers based on customer technical drawings
FAQ
Q1: What is the core function of an Impact Hammer Bi-Directional High-Frequency Reciprocating Downhole Shock Jar?
The Impact Hammer is a bi-directional high-frequency reciprocating shock jar dedicated for coiled tubing continuous through-tubing downhole paraffin cleaning, scale removal, sliding sleeve shifting and stuck fish retrieval remedial workover operations. The tool generates continuous high-frequency upward and downward reciprocating impact force, the powerful shock load can efficiently break down and clear paraffin wax layers and mineral scale deposits attached to tubing inner walls; meanwhile, the impact hammer can be deployed for multiple downhole operation scenarios including sliding sleeve shifting actuation, stuck downhole fish retrieval and bridge plug / cement plug milling grinding auxiliary construction work. The whole tool body adopts full metal-to-metal hermetic pressure sealing structure to realize stable reliable high-pressure fluid sealing performance under complex downhole corrosive fluid working environments. Two impact direction options are available: bidirectional up/down reciprocating shock or downward single-direction shock. The applicable outer diameter size range covers 1-11/16" to 3-1/8". Two independent working condition material grade options are provided: STD standard carbon steel grade for conventional non-corrosive wellbore environments without high-concentration H₂S corrosive medium; H₂S sour service high-corrosion-resistant alloy grade for high-sulfur H₂S containing corrosive downhole wellbore fluid construction conditions. No complex internal movable friction components or spring assemblies are equipped, operation flow is highly simplified, widely applied for coiled tubing continuous through-tubing paraffin cleaning, scale removal, sliding sleeve shifting and stuck fish retrieval remedial workover construction operations.
Q2: What three core structural advantages does this Impact Hammer Bi-Directional Reciprocating Downhole Shock Jar own?
1. High-frequency bidirectional up/down reciprocating shock load generation design, the impact hammer adopts bidirectional reciprocating shock structural design, which can generate continuous high-frequency upward and downward reciprocating impact force; the powerful reciprocating shock load can efficiently break down and clear thick paraffin wax layers, hard mineral scale deposits attached to the inner wall of production tubing, realizing rapid downhole paraffin cleaning and scale removal operations; 2. Full metal-to-metal hermetic pressure sealing structural design, the whole tool body adopts full metal-to-metal hermetic pressure sealing structure; all sealing mating contact surfaces adopt all-metal hard contact sealing form, which can realize stable reliable high-pressure fluid sealing performance under complex downhole corrosive fluid working environments, effectively preventing internal high-pressure fluid leakage failure; 3. Multi-scenario multi-function downhole operation application design & ultra-simplified wellsite operation logic, the high-frequency bidirectional reciprocating impact force output of the impact hammer can also be applied to multiple downhole operation scenarios: sliding sleeve shifting actuation, stuck downhole fish retrieval and bridge plug / cement plug milling grinding auxiliary construction work, realizing multi-purpose single tool configuration to reduce downhole tool string tripping frequency and improve overall construction efficiency; the bi-directional reciprocating impact hammer has no complex internal movable friction components, spring energy storage assemblies or differential pressure release mechanisms, only need to run the impact hammer down along the tubing inner wall to the target downhole operation section, start the surface circulation pump to drive the internal reciprocating impact mechanism to generate continuous high-frequency bidirectional up/down shock load, to complete paraffin wax breaking & cleaning, mineral scale removal, sliding sleeve shifting or stuck fish retrieval construction work, no complex auxiliary operation steps such as drop ball delivery or shear pin impact jarring are needed to shorten wellsite operation time and reduce human error risks; the product also features complete outer diameter size range coverage and integral cylindrical tool body low maintenance design to further expand applicable construction scope and reduce post-operation maintenance workload.
Q3: What outer diameter sizes and configurable options do these Impact Hammer Bi-Directional Reciprocating Downhole Shock Jars support?
Our standard applicable outer diameter size range covers 1-11/16", 2-1/8", 2-7/8", 3-1/8". Each OD size supports two independent impact direction versions for free matching selection: Up/Down bidirectional reciprocating shock version / Downward single-direction shock version; each model is equipped with multiple standard connection thread specifications (AMMT / PAC / REG) for coiled tubing tool string connection matching. Two independent working condition material grade versions are also optional for each outer diameter size: STD standard carbon steel working condition grade and H₂S sour service high-corrosion-resistant alloy working condition grade. Custom bidirectional reciprocating impact frequency grade specifications and base material corrosion resistance grade specifications are available upon customer downhole wellbore fluid H₂S concentration corrosive environment and different downhole operation construction demands.
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 bi-directional reciprocating impact hammers with special outer diameters or customized bidirectional reciprocating impact frequency grade specifications, base material corrosion resistance grade specifications & bottom connection thread profiles 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 continuous through-tubing remedial workover and washing downhole service tools, covering bi-directional reciprocating impact hammers, thru-tubing hydraulic retractable blade underreamers, tapered pear conical pilot milling shoes, concave recessed milling shoes, five-blade five-wing milling shoes, flat bottom milling shoes, combination flat blade milling shoes, muncher multi-cutting milling shoes, convex nose pilot milling shoes, magnetic fishing rods, magnetic junk retrieval magnets, venturi junk baskets, flow activated releasable fishing overshots, flow activated releasable fishing spears, flow activated releasable JDC running/pulling tools, flow activated releasable GS fishing tools, bi-direction mechanical accelerators, bi-direction hydraulic accelerators, bi-direction hydraulic jars, up-stroke hydraulic jars, bi-direction mechanical jars, up-stroke mechanical jars, wireline grabs, wireline spears and all other supporting downhole fishing, jarring, anchoring and washing service tools. Every finished product undergoes strict factory tensile load, repeated reciprocating impact shock load fatigue, full metal-to-metal hermetic high-pressure fluid sealing performance calibration test and bidirectional up/down reciprocating impact frequency verification testing, with complete material inspection certification attached to each shipment. Please share your detailed technical requirements, including target outer diameter size, required impact direction (Up/Down bidirectional shock / Downward single-direction shock), required bidirectional reciprocating impact frequency grade, downhole wellbore fluid H₂S concentration corrosive environment construction conditions, 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 on-site coiled tubing paraffin cleaning, scale removal and sliding sleeve shifting operation guidance, with clear confirmation reminder for impact direction selection (Up/Down bidirectional shock / Downward single-direction shock) and bidirectional reciprocating impact frequency grade confirmation according to different downhole operation construction demands during order placement.
