Product Overview
The Sand Jetting Sub downhole casing sand cutting perforating jet gun is a dedicated downhole perforation construction tool that adopts Bernoulli fluid dynamic theory to realize high-speed sand fluid jet cutting of steel casing and surrounding cement sheath.
This sand jetting sub is lowered into the predetermined underground perforation target depth via coiled tubing or jointed tubing string; high-pressure sand-laden perforating fluid is pumped down from surface through the inner bore of the tool string, the high-pressure fluid flows through the precisely machined throttling section of each built-in tungsten carbide jet nozzle, and the Bernoulli effect converts static high-pressure fluid pressure energy into high-speed directional jet kinetic energy; the continuous high-velocity sand-containing jet stream impacts, erodes and cuts through the outer steel casing pipe wall and the surrounding cement sheath layer, forming stable through flow channels between the underground target hydrocarbon reservoir and the inner wellbore space to realize reservoir fluid communication for subsequent oil and gas production operations.
The jet nozzles adopt exclusive high-hardness tungsten carbide wear-resistant material, the single nozzle allowable sand mixed fluid throughput volume exceeds 60 cubic meters, which can stably support large-displacement high-flow long-duration sand jet perforation construction operations. The outer cylindrical surface of the main sub body receives special integrated anti-impact anti-scouring protective treatment, possessing extremely strong resistance against reverse high-speed sand flow backwash erosion damage generated during perforation jetting, effectively extending the tool service life under severe downhole sand fluid scouring working conditions. Both the inner bore orifice throttling diameter of each jet nozzle and the circumferential installation layout phase angle of the nozzles can be freely customized and adjusted according to different well perforation trajectory design requirements, realizing flexible perforation coverage distribution matching various reservoir development plans. Four standard matching outer casing outer diameter sizes are supported: 4-1/2 inch, 5 inch, 5-1/2 inch and 7 inch, each casing OD corresponds to fixed overall make-up length dimension, all models adopt STD standard working condition configuration.
The Sand Jetting Sub 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 connect the sand jetting sub to the bottom end of the downhole tool string, run the whole tool string down along the tubing inner wall to the predetermined underground perforation target depth, pump high-pressure sand-laden perforating fluid from surface through the tool string inner bore, the fluid is throttled through tungsten carbide nozzles to form high-speed sand jet flow for continuous casing and cement sheath cutting perforation work, completing the construction of through flow channels connecting target reservoir and wellbore; after the perforation construction work is fully completed, lift the whole tool string together with the sand jetting sub out of the wellbore to finish operation, no additional complex auxiliary operation steps such as separate ball dropping or shear pin triggering are needed, shortening wellsite operation time and reducing human error risks.
The standardized product lineup covers four standard matching outer casing outer diameter sizes of 4-1/2", 5", 5-1/2" and 7", each casing OD corresponds to fixed overall make-up length dimension, all models adopt STD standard working condition configuration; custom jet nozzle inner bore orifice diameter, nozzle circumferential layout phase angle and main body outer surface anti-erosion treatment grade customization are available upon customer technical drawing submission.
Complete Technical Specification Table
| PN Part Number | Matching Outer Casing Outer Diameter (Casing OD) | Tool Inner Bore ID | Overall Make-Up Length | Working Condition Grade |
|---|---|---|---|---|
| L52728750120 | 4-1/2" | 1.26" | 18.90" | STD Standard |
| L52731250120 | 5" | 1.30" | 19.69" | STD Standard |
| L5273750120 | 5-1/2" | 1.65" | 20.08" | STD Standard |
| L5275000120 | 7" | 2.56" | 20.87" | STD Standard |
Note: Custom jet nozzle inner bore orifice throttling diameter specifications, nozzle circumferential layout phase angle adjustments and main body outer surface anti-erosion treatment grade modifications are available via engineering consultation. All standard specifications adopt STD standard working condition configuration; four standard matching outer casing outer diameter sizes are provided: 4-1/2", 5", 5-1/2", 7", each casing OD corresponds to fixed overall make-up length dimension and fixed tool inner bore ID size.
Core Features & Advantages
Bernoulli Fluid Dynamic Principle High-Speed Sand Jet Cutting Design: The whole tool is designed based on Bernoulli’s theorem, the throttling structure of tungsten carbide nozzles converts static high-pressure sand-laden fluid pressure energy into high-speed directional jet kinetic energy, realizing efficient continuous erosion cutting of steel casing pipe and surrounding cement sheath, stably forming complete through flow channels between underground target hydrocarbon reservoir and wellbore inner space.
Exclusive High-Hardness Tungsten Carbide Wear-Resistant Jet Nozzle Design: Each jet nozzle is manufactured from exclusive high-hardness tungsten carbide alloy wear-resistant material, with outstanding long-term sand mixed fluid erosion resistance performance; the maximum allowable single nozzle sand mixed fluid throughput volume reaches over 60 cubic meters, which can stably support large-displacement high-flow long-duration sand jet perforation construction operations without rapid nozzle abrasion failure.
Special Integral Outer Surface Anti-Impact Anti-Scour Protective Treatment For Main Body: The entire outer cylindrical surface of the sand jetting sub main body receives special integrated anti-impact anti-scouring protective treatment, greatly enhances the main body’s resistance against reverse high-speed sand flow backwash erosion damage generated during perforation jetting, effectively extending the tool service life under severe downhole sand fluid scouring working conditions and reducing frequent tool replacement maintenance costs.
Fully Customizable Jet Nozzle Structural Layout Design: Both the inner bore orifice throttling diameter of each jet nozzle and the circumferential installation layout phase angle of the nozzles can be freely customized and adjusted according to different well perforation trajectory design requirements, realizing flexible perforation coverage distribution matching various reservoir development plans and different wellbore structural characteristics.
Four Standard Matching Outer Casing Outer Diameter Size Series: Four standard matching outer casing outer diameter size specifications are provided to cover mainstream oilfield casing sizes: 4-1/2", 5", 5-1/2", 7", each casing OD corresponds to fixed overall make-up length dimension, convenient for standardized wellsite tool string assembly and matching selection according to on-site casing specifications.
Ultra-Simplified Wellsite Operation Logic: The sand jetting sub has no complex internal movable friction components or spring energy storage assemblies, the operation flow is highly streamlined: connect the sand jetting sub to the bottom end of the downhole tool string, run the whole tool string down along the tubing inner wall to the predetermined underground perforation target depth, pump high-pressure sand-laden perforating fluid from surface through the tool string inner bore, the fluid is throttled through tungsten carbide nozzles to form high-speed sand jet flow for continuous casing and cement sheath cutting perforation work, completing the construction of through flow channels connecting target reservoir and wellbore; after the perforation construction work is fully completed, lift the whole tool string together with the sand jetting sub out of the wellbore to finish operation, no complex auxiliary operation steps such as separate ball dropping or shear pin triggering are needed to shorten wellsite operation time and reduce human error risks.
Low Routine Maintenance Design: The integral cylindrical alloy steel main body eliminates vulnerable split assembly movable wear parts; after each downhole casing perforation construction operation, only simple surface circulating fluid debris cleaning and tungsten carbide jet nozzle inner wall sand erosion wear inspection are required, no complex disassembly, internal nozzle component replacement or spring preload adjustment maintenance procedures, greatly reducing daily maintenance labor and spare parts inventory cost.
Application Scenarios
1. Oilfield downhole casing and surrounding cement sheath sand jet cutting perforation construction heavy-load intervention treatments, including high-speed sand fluid jet erosion cutting to build through flow channels connecting underground target hydrocarbon reservoir and wellbore inner space
2. Conventional sweet crude oilfield STD standard sand jetting sub downhole casing perforation remedial workover service (STD Standard carbon steel working condition grade)
3. High-sulfur H₂S containing corrosive downhole wellbore fluid construction project downhole casing sand jet perforation heavy workover projects requiring H₂S sour service anti-sulfide stress corrosion alloy material grade
4. Long-term continuous tungsten carbide nozzle high-flow sand fluid erosion load safety protection for downhole casing perforation tool string assemblies in onshore and offshore oilfield coiled tubing / jointed tubing remedial workover intervention projects
Standard Delivery Package
Complete sand jetting sub downhole casing sand jet perforating jet gun integral cylindrical pre-assembled unit including main sub body, multiple built-in tungsten carbide wear-resistant jet nozzles and internal fluid flow passage structure
Spare interchangeable tungsten carbide jet nozzle maintenance kit for on-site worn nozzle sand erosion wear replacement
Full factory inspection test report including repeated high-flow sand fluid erosion load fatigue resistance test, integral tensile load test, jet nozzle throttling flow performance calibration test data
Product dimension drawing and official installation & operation instruction manual, with detailed on-site downhole casing sand jet perforation construction operation guidance, with clear confirmation reminder for jet nozzle inner bore orifice diameter and circumferential layout phase angle selection according to different well perforation trajectory design demands during order placement
Quality Warranty & After-Sales Service
Warranty Coverage: 12 months after factory shipment or 2000 cumulative high-flow sand fluid erosion load cycles, whichever condition is reached first
Full factory inspection: Each finished sand jetting sub downhole casing sand jet perforating jet gun passes integral tensile load test, repeated high-flow sand fluid erosion load fatigue test, jet nozzle throttling flow performance calibration test before factory delivery
Free professional technical support: Our oilfield downhole tool engineering team provides downhole casing sand jet perforation remedial workover tool string matching, matching outer casing outer diameter size & jet nozzle structural layout parameter selection consultation free of charge
Long-term spare parts supply: All interchangeable tungsten carbide jet nozzle wear maintenance accessories are stocked with competitive factory bulk pricing
Custom development service: Support custom jet nozzle inner bore orifice throttling diameter specifications, customized nozzle circumferential layout phase angle adjustments, main body outer surface anti-erosion treatment grade modification and special size sand jetting subs based on customer technical drawings
FAQ
Q1: What is the core function of a Sand Jetting Sub Downhole Casing Sand Jet Perforating Jet Gun?
The Sand Jetting Sub downhole casing sand jet perforating jet gun is a dedicated downhole perforation construction tool that adopts Bernoulli fluid dynamic theory to realize high-speed sand fluid jet cutting of steel casing and surrounding cement sheath. This sand jetting sub is lowered into the predetermined underground perforation target depth via coiled tubing or jointed tubing string; high-pressure sand-laden perforating fluid is pumped down from surface through the inner bore of the tool string, the high-pressure fluid flows through the precisely machined throttling section of each built-in tungsten carbide jet nozzle, and the Bernoulli effect converts static high-pressure fluid pressure energy into high-speed directional jet kinetic energy; the continuous high-velocity sand-containing jet stream impacts, erodes and cuts through the outer steel casing pipe wall and the surrounding cement sheath layer, forming stable through flow channels between the underground target hydrocarbon reservoir and the inner wellbore space to realize reservoir fluid communication for subsequent oil and gas production operations. The jet nozzles adopt exclusive high-hardness tungsten carbide wear-resistant material, the single nozzle allowable sand mixed fluid throughput volume exceeds 60 cubic meters, which can stably support large-displacement high-flow long-duration sand jet perforation construction operations. The outer cylindrical surface of the main sub body receives special integrated anti-impact anti-scouring protective treatment, possessing extremely strong resistance against reverse high-speed sand flow backwash erosion damage generated during perforation jetting. Both the inner bore orifice throttling diameter of each jet nozzle and the circumferential installation layout phase angle of the nozzles can be freely customized and adjusted according to different well perforation trajectory design requirements. Four standard matching outer casing outer diameter sizes are supported: 4-1/2 inch, 5 inch, 5-1/2 inch and 7 inch, each casing OD corresponds to fixed overall make-up length dimension, all models adopt STD standard working condition configuration. No complex internal movable friction components or spring assemblies are equipped, operation flow is highly simplified, widely applied for oilfield downhole casing and surrounding cement sheath sand jet cutting perforation construction heavy-load intervention treatments, including high-speed sand fluid jet erosion cutting to build through flow channels connecting underground target hydrocarbon reservoir and wellbore inner space.
Q2: What three core structural advantages does this Sand Jetting Sub Downhole Casing Sand Jet Perforating Jet Gun own?
1. Bernoulli fluid dynamic principle high-speed sand jet cutting design, the whole tool is designed based on Bernoulli’s theorem, the throttling structure of tungsten carbide nozzles converts static high-pressure sand-laden fluid pressure energy into high-speed directional jet kinetic energy, realizing efficient continuous erosion cutting of steel casing pipe and surrounding cement sheath, stably forming complete through flow channels between underground target hydrocarbon reservoir and wellbore inner space; 2. Exclusive high-hardness tungsten carbide wear-resistant jet nozzle design & special integral outer surface anti-impact anti-scour protective treatment dual wear-resistance protection system, each jet nozzle is manufactured from exclusive high-hardness tungsten carbide alloy wear-resistant material, with outstanding long-term sand mixed fluid erosion resistance performance; the maximum allowable single nozzle sand mixed fluid throughput volume reaches over 60 cubic meters, which can stably support large-displacement high-flow long-duration sand jet perforation construction operations without rapid nozzle abrasion failure; the entire outer cylindrical surface of the sand jetting sub main body receives special integrated anti-impact anti-scouring protective treatment, greatly enhances the main body’s resistance against reverse high-speed sand flow backwash erosion damage generated during perforation jetting, effectively extending the tool service life under severe downhole sand fluid scouring working conditions and reducing frequent tool replacement maintenance costs; 3. Fully customizable jet nozzle structural layout design & four standard matching outer casing size series ultra-simplified wellsite operation logic, both the inner bore orifice throttling diameter of each jet nozzle and the circumferential installation layout phase angle of the nozzles can be freely customized and adjusted according to different well perforation trajectory design requirements, realizing flexible perforation coverage distribution matching various reservoir development plans and different wellbore structural characteristics; four standard matching outer casing outer diameter size specifications are provided to cover mainstream oilfield casing sizes: 4-1/2", 5", 5-1/2", 7", each casing OD corresponds to fixed overall make-up length dimension, convenient for standardized wellsite tool string assembly and matching selection according to on-site casing specifications; the sand jetting sub has no complex internal movable friction components or spring energy storage assemblies, only need to connect the sand jetting sub to the bottom end of the downhole tool string, run the whole tool string down along the tubing inner wall to the predetermined underground perforation target depth, pump high-pressure sand-laden perforating fluid from surface through the tool string inner bore, the fluid is throttled through tungsten carbide nozzles to form high-speed sand jet flow for continuous casing and cement sheath cutting perforation work, completing the construction of through flow channels connecting target reservoir and wellbore; after the perforation construction work is fully completed, lift the whole tool string together with the sand jetting sub out of the wellbore to finish operation, no complex auxiliary operation steps such as separate ball dropping or shear pin triggering are needed to shorten wellsite operation time and reduce human error risks; the product also features fully customizable jet nozzle layout design and four standard casing size series to further expand applicable construction scope and reduce on-site operation workload.
Q3: What matching outer casing outer diameter sizes and configurable options do these Sand Jetting Sub Downhole Casing Sand Jet Perforating Jet Guns support?
Our standard applicable matching outer casing outer diameter size range covers 4-1/2", 5", 5-1/2", 7". Each casing OD size supports three independent configurable options for free matching selection: jet nozzle inner bore orifice throttling diameter specification, nozzle circumferential installation layout phase angle, main body outer surface anti-erosion treatment grade. All models support custom base material corrosion resistance grade specifications upon customer request. Four standard matching outer casing outer diameter sizes correspond to fixed overall make-up length dimensions and fixed tool inner bore ID sizes respectively. Two independent working condition material grade versions are also optional for each casing OD size: STD standard carbon steel working condition grade and H₂S sour service high-corrosion-resistant alloy working condition grade. Custom jet nozzle inner bore orifice throttling diameter specifications, nozzle circumferential layout phase angle adjustments and main body outer surface anti-erosion treatment grade modifications are available upon customer downhole wellbore fluid H₂S concentration corrosive environment 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 sand jetting subs with special matching outer casing outer diameter sizes or customized jet nozzle inner bore orifice throttling diameter specifications, nozzle circumferential layout phase angle adjustments, main body outer surface anti-erosion treatment grade modifications 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 oilfield downhole casing sand jet perforation construction heavy-load intervention treatment service tools, covering sand jetting subs, hydraulic remote control wellhead suspension hangers, bypass flow divider valves, hydraulic pulse vibration shock exciters, 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, bi-directional reciprocating impact hammers, coiled tubing positive displacement drill motors, downhole gas-liquid separators, impact hammers, 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 high-flow sand fluid erosion load fatigue, jet nozzle throttling flow performance calibration testing, with complete material inspection certification attached to each shipment. Please share your detailed technical requirements, including target matching outer casing outer diameter size, required jet nozzle inner bore orifice throttling diameter specification, nozzle circumferential installation layout phase angle selection, main body outer surface anti-erosion treatment 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 downhole casing sand jet perforation construction operation guidance, with clear confirmation reminder for jet nozzle inner bore orifice throttling diameter and circumferential layout phase angle selection according to different well perforation trajectory design demands during order placement.
