Product Overview
The Angled Sand Jetting Sub downhole perforating gun with downward inclined anti-backwash jet nozzles is a dedicated sand jet perforation construction tool that adopts Bernoulli fluid dynamic theory and built-in downward tilted jet nozzle structural design to realize high-speed sand fluid jet cutting of steel casing and surrounding cement sheath, while eliminating reverse sand backwash erosion damage to the tool body.
This angled sand jetting sub is installed at the bottom end of the coiled tubing string before running the coiled tubing into the predetermined target underground well depth for perforation construction operations; high-pressure sand-laden perforating fluid is pumped down from surface through the inner bore of the coiled tubing 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; all jet nozzles are pre-machined with a fixed downward inclined spray angle, which diverts the rebound sand fluid downward along the wellbore wall, effectively preventing the upward backwash of high-speed abrasive sand flow from scouring and abrading the outer cylindrical surface of the tool body, greatly extending the service life of the perforating gun under severe downhole sand fluid scouring working conditions. The jet nozzles adopt exclusive high-hardness tungsten carbide wear-resistant alloy material, the maximum allowable sand carrying fluid throughput volume of a single nozzle exceeds 60 cubic meters, which can stably meet high-volume large-displacement long-duration sand jet perforation construction requirements. The outer cylindrical surface of the entire sand jetting sub main body receives special integrated anti-impact anti-scouring protective treatment, with extremely strong resistance to reverse high-speed sand flow backwash impact and erosion damage generated during perforation jetting process. 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 downhole well perforation trajectory design requirements, realizing flexible perforation coverage distribution matching various reservoir development plans. Three standard matching coiled tubing outer diameter sizes are supported: 1-3/4 inch, 2 inch and 2-3/8 inch, each CT OD corresponds to fixed overall make-up length dimension and dedicated standard Roll-On type connection thread specification (1" AMMT for 1-3/4" CT, 1-1/2" AMMT for 2" CT, 2-3/8" PAC for 2-3/8" CT), all models adopt STD standard working condition configuration.
The Angled 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 angled sand jetting sub to the bottom end of the coiled tubing string via the matched Roll-On connector thread, run the whole tool string down along the tubing inner wall to the predetermined target underground perforation well depth, pump high-pressure sand-laden perforating fluid from surface through the coiled tubing inner bore, the fluid is throttled through the downward inclined tungsten carbide nozzles to form high-speed directional sand jet flow for continuous casing and cement sheath cutting perforation work, the built-in downward nozzle angle continuously diverts rebound sand fluid to avoid backwash erosion to the tool body during the whole perforation construction process; after the perforation construction work is fully completed, lift the coiled tubing string together with the angled 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 three standard matching coiled tubing outer diameter sizes of 1-3/4", 2" and 2-3/8", each CT OD corresponds to fixed overall make-up length dimension and dedicated standard Roll-On type connection thread specification, all models adopt STD standard working condition configuration; custom tungsten carbide nozzle sand throughput capacity, matching coiled tubing outer diameter size and jet nozzle circumferential layout phase angle customization are available upon customer technical drawing submission.
Complete Technical Specification Table
| PN Part Number | Matching Coiled Tubing Outer Diameter (CT OD) | Inner Bore ID | Overall Make-Up Length | Dedicated Standard Roll-On Connection Thread | Working Condition Grade |
|---|---|---|---|---|---|
| L5251750120 | 1-3/4" | 0.67" | 10.1" | 1" AMMT | STD Standard |
| L5252000120 | 2" | 0.8" | 10.6" | 1-1/2" AMMT | STD Standard |
| L5252375120 | 2-3/8" | 1" | 11.08" | 2-3/8" PAC | STD Standard |
Note: Custom tungsten carbide nozzle sand throughput capacity specifications, matching coiled tubing outer diameter sizes and jet nozzle circumferential layout phase angle adjustments are available via engineering consultation. All standard specifications adopt STD standard working condition configuration; three standard matching coiled tubing outer diameter sizes are provided: 1-3/4", 2", 2-3/8", each CT OD corresponds to fixed overall make-up length dimension and dedicated standard Roll-On type connection thread specification.
Core Features & Advantages
Downward Inclined Anti-Backwash Jet Nozzle Structural Design: All jet nozzles are pre-machined with fixed downward spray angle, which diverts rebound abrasive sand fluid downward along the wellbore inner wall, effectively blocking upward backwash sand flow and eliminating severe reverse scouring and abrasion damage to the outer cylindrical surface of the tool body, significantly extending the service life of the perforating gun under severe downhole sand fluid scouring working conditions.
Exclusive High-Hardness Tungsten Carbide Wear-Resistant Jet Nozzle Design: The jet ejection nozzles are 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 carrying fluid throughput volume reaches over 60 cubic meters, which can stably support high-volume large-displacement high-flow long-duration sand jet perforation construction requirements without rapid nozzle abrasion failure.
Integral Outer Cylindrical Surface Special Anti-Impact Anti-Scour Protective Treatment: 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 to reverse high-speed sand flow backwash impact and erosion damage generated during perforation jetting process, effectively reducing post-operation 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 downhole well perforation trajectory design requirements, realizing flexible perforation coverage distribution matching various reservoir development plans and different wellbore structural characteristic parameters.
Three Standard Matching Coiled Tubing Outer Diameter Size Series With Dedicated Roll-On Connector Thread Specifications: Three standard matching coiled tubing outer diameter size specifications are provided to cover mainstream oilfield coiled tubing sizes: 1-3/4", 2", 2-3/8", each CT OD corresponds to fixed overall make-up length dimension and dedicated standard Roll-On type connection thread specification (1" AMMT, 1-1/2" AMMT, 2-3/8" PAC respectively), convenient for standardized wellsite tool string assembly and matching selection according to on-site coiled tubing connection specifications.
Ultra-Simplified Wellsite Operation Logic: The angled sand jetting sub has no complex internal movable friction components or spring energy storage assemblies, the operation flow is highly streamlined: connect the angled sand jetting sub to the bottom end of the coiled tubing string via matched Roll-On connector thread, run the whole tool string down to the predetermined target underground perforation well depth, pump high-pressure sand-laden perforating fluid from surface through the coiled tubing inner bore, the fluid is throttled through the downward inclined tungsten carbide nozzles to form high-speed directional sand jet flow for continuous casing and cement sheath cutting perforation work, the built-in downward nozzle angle continuously diverts rebound sand fluid to avoid backwash erosion to the tool body during the whole perforation construction process; after the perforation construction work is fully completed, lift the coiled tubing string together with the angled 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 tool body eliminates vulnerable split assembly movable wear parts; after each wellhead coiled tubing sand jet 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. Coiled tubing through-tubing sand jet perforation construction multi-function heavy-load intervention treatments, including downward inclined anti-backwash sand jet cutting perforation and post-perforation wellbore reverse circulation cleaning operations
2. Conventional sweet crude oilfield STD standard angled sand jetting sub through-tubing sand jet perforation remedial workover service (STD Standard carbon steel working condition grade)
3. High-sulfur H₂S containing corrosive downhole wellbore fluid construction project through-tubing sand jet perforation multi-function heavy workover projects requiring H₂S sour service anti-sulfide stress corrosion alloy material grade
4. Long-term continuous downward inclined nozzle anti-backwash sand erosion load safety protection for downhole coiled tubing sand jet perforation tool string assemblies in onshore and offshore oilfield coiled tubing remedial workover intervention projects
Standard Delivery Package
Complete angled sand jetting sub integral cylindrical pre-assembled unit including main tool body, built-in downward inclined tungsten carbide jet nozzle groups 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 coiled tubing through-tubing 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 downhole 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 angled sand jetting sub 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 coiled tubing through-tubing sand jet perforation remedial workover tool string matching, matching coiled tubing outer diameter size & jet nozzle 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 tungsten carbide nozzle sand throughput capacity specifications, customized matching coiled tubing outer diameter sizes, jet nozzle circumferential layout phase angle adjustment, base material corrosion resistance grade modification and special size angled sand jetting subs based on customer technical drawings
FAQ
Q1: What is the core function of an Angled Sand Jetting Sub Downhole Perforating Gun With Downward Inclined Anti-Backwash Jet Nozzles?
The Angled Sand Jetting Sub downhole perforating gun with downward inclined anti-backwash jet nozzles is a dedicated sand jet perforation construction tool that adopts Bernoulli fluid dynamic theory and built-in downward tilted jet nozzle structural design to realize high-speed sand fluid jet cutting of steel casing and surrounding cement sheath, while eliminating reverse sand backwash erosion damage to the tool body. This angled sand jetting sub is installed at the bottom end of the coiled tubing string before running the coiled tubing into the predetermined target underground well depth for perforation construction operations; high-pressure sand-laden perforating fluid is pumped down from surface through the inner bore of the coiled tubing 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; all jet nozzles are pre-machined with a fixed downward inclined spray angle, which diverts the rebound sand fluid downward along the wellbore wall, effectively preventing the upward backwash of high-speed abrasive sand flow from scouring and abrading the outer cylindrical surface of the tool body, greatly extending the service life of the perforating gun under severe downhole sand fluid scouring working conditions. The jet nozzles adopt exclusive high-hardness tungsten carbide wear-resistant alloy material, the maximum allowable sand carrying fluid throughput volume of a single nozzle exceeds 60 cubic meters, which can stably meet high-volume large-displacement long-duration sand jet perforation construction requirements. The outer cylindrical surface of the entire sand jetting sub main body receives special integrated anti-impact anti-scouring protective treatment, with extremely strong resistance to reverse high-speed sand flow backwash impact and erosion damage generated during perforation jetting process. 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 downhole well perforation trajectory design requirements, realizing flexible perforation coverage distribution matching various reservoir development plans. Three standard matching coiled tubing outer diameter sizes are supported: 1-3/4 inch, 2 inch and 2-3/8 inch, each CT OD corresponds to fixed overall make-up length dimension and dedicated standard Roll-On type connection thread specification, 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 coiled tubing through-tubing sand jet perforation construction multi-function heavy-load intervention treatments, including downward inclined anti-backwash sand jet cutting perforation and post-perforation wellbore reverse circulation cleaning operations.
Q2: What three core structural advantages does this Angled Sand Jetting Sub Downhole Perforating Gun With Downward Inclined Anti-Backwash Jet Nozzles own?
1. Downward inclined anti-backwash jet nozzle structural design, all jet nozzles are pre-machined with fixed downward spray angle, which diverts rebound abrasive sand fluid downward along the wellbore inner wall, effectively blocking upward backwash sand flow and eliminating severe reverse scouring and abrasion damage to the outer cylindrical surface of the tool body, significantly extending the service life of the perforating gun under severe downhole sand fluid scouring working conditions; 2. Exclusive high-hardness tungsten carbide wear-resistant jet nozzle design & integral outer cylindrical surface special anti-impact anti-scour protective treatment dual wear-resistance protection system, the jet ejection nozzles are 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 carrying fluid throughput volume reaches over 60 cubic meters, which can stably support high-volume large-displacement high-flow long-duration sand jet perforation construction requirements 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 to reverse high-speed sand flow backwash impact and erosion damage generated during perforation jetting process, effectively reducing post-operation tool replacement maintenance costs; 3. Fully customizable jet nozzle structural layout design & three standard matching coiled tubing outer diameter size series with dedicated Roll-On connector thread specifications 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 downhole well perforation trajectory design requirements, realizing flexible perforation coverage distribution matching various reservoir development plans and different wellbore structural characteristic parameters; three standard matching coiled tubing outer diameter size specifications are provided to cover mainstream oilfield coiled tubing sizes: 1-3/4", 2", 2-3/8", each CT OD corresponds to fixed overall make-up length dimension and dedicated standard Roll-On type connection thread specification, convenient for standardized wellsite tool string assembly and matching selection according to on-site coiled tubing connection specifications; the angled sand jetting sub has no complex internal movable friction components or spring energy storage assemblies, only need to connect the angled sand jetting sub to the bottom end of the coiled tubing string via matched Roll-On connector thread, run the whole tool string down to the predetermined target underground perforation well depth, pump high-pressure sand-laden perforating fluid from surface through the coiled tubing inner bore, the fluid is throttled through the downward inclined tungsten carbide nozzles to form high-speed directional sand jet flow for continuous casing and cement sheath cutting perforation work, the built-in downward nozzle angle continuously diverts rebound sand fluid to avoid backwash erosion to the tool body during the whole perforation construction process; after the perforation construction work is fully completed, lift the coiled tubing string together with the angled 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 three standard matching coiled tubing outer diameter size series with dedicated Roll-On connector thread specifications to further expand applicable construction scope and reduce on-site operation workload.
Q3: What matching coiled tubing outer diameter sizes and configurable options do these Angled Sand Jetting Sub Downhole Perforating Gun With Downward Inclined Anti-Backwash Jet Nozzles support?
Our standard applicable matching coiled tubing outer diameter size range covers 1-3/4", 2", 2-3/8". Each CT OD size supports three independent configurable options for free matching selection: tungsten carbide nozzle sand throughput capacity specification, jet nozzle circumferential layout phase angle adjustment, base material corrosion resistance grade. All models support custom tungsten carbide nozzle sand throughput capacity specifications upon customer request. Three standard matching coiled tubing outer diameter sizes correspond to fixed overall make-up length dimensions and dedicated standard Roll-On connector thread specifications respectively. Two independent working condition material grade versions are also optional for each CT OD size: STD standard carbon steel working condition grade and H₂S sour service high-corrosion-resistant alloy working condition grade. Custom tungsten carbide nozzle sand throughput capacity specifications, jet nozzle circumferential layout phase angle adjustments and base material corrosion resistance 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 angled sand jetting subs with special matching coiled tubing outer diameter sizes or customized tungsten carbide nozzle sand throughput capacity specifications, jet nozzle circumferential layout phase angle adjustments, base material corrosion resistance 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 coiled tubing through-tubing sand jet perforation construction multi-function heavy-load intervention treatment service tools, covering angled sand jetting subs, integrated jetting subs, coiled tubing 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 coiled tubing outer diameter size, required tungsten carbide nozzle sand throughput capacity specification, jet nozzle circumferential layout phase angle selection, base material corrosion resistance 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 through-tubing sand jet perforation construction operation guidance, with clear confirmation reminder for tungsten carbide nozzle sand throughput capacity specification and jet nozzle circumferential layout phase angle selection according to different downhole well perforation trajectory design demands during order placement.
