Product Overview
The Hydraulic Indexing Tool differential pressure driven directional rotation indexing sub is a dedicated downhole tool developed for two core oilfield coiled tubing construction operation scenarios: directional sand jet perforation and targeted directional wellbore flushing washing. The entire tool adopts modular integral assembly structural design, and its core indexing rotation actuation mechanism is fully driven by surface pump fluid pressure variation, eliminating the need for additional mechanical slack-off weight shifting or separate wireline intervention operations.
Working principle: During normal low-pressure circulation running-in stage, the internal piston and locking mechanism of the hydraulic indexing tool remain in the initial retracted position, and the tool body maintains fixed zero-degree azimuth orientation; when the surface pump discharge pressure is raised to the pre-calibrated preset actuation threshold value, the pressure difference between the internal tubing fluid channel and the outer annulus drives the built-in internal piston assembly to slide axially downward, which mechanically pushes the lower tool body to complete a single fixed incremental angular rotation, with two optional rotation angle specifications available: 45° or 60°; after the single incremental rotation action is completed, the surface pump pressure is reduced back to standard normal circulation working pressure, the internal piston resets upward and the built-in mechanical locking mechanism engages to securely hold the tool body in the newly indexed target azimuth position, allowing continuous stable directional sand jet perforation construction or targeted directional wellbore flushing washing work along the pre-set directional jet trajectory.
The tool adopts fully adjustable indexing displacement stroke structural design, the axial travel distance of the internal actuation piston can be freely adjusted according to different downhole perforation coverage distribution trajectory design requirements, realizing flexible matching of incremental rotation angle and indexing stroke. Two independent working condition material grade options are provided for free customer selection according to different downhole wellbore fluid corrosion environment requirements: Version one: STD standard carbon steel material, cost-effective, suitable for conventional low-sulfur, low-corrosion oil and gas well construction working conditions; Version two: H₂S sour service special anti-sulfide stress corrosion alloy material, fully complies with NACE MR0175 international anti-sulfur corrosion standard, with excellent long-term resistance to hydrogen sulfide containing corrosive wellbore fluid erosion, suitable for high H₂S concentration sour oil and gas well construction severe working conditions.
Three standard matching outer diameter sizes are supported for unified standardized tool string matching selection: 1-3/4 inch, 2-1/8 inch and 3-1/8 inch, each OD size corresponds to fixed overall make-up length dimension and dedicated standard top connection thread specifications: 1" AMMT thread for 1-3/4" OD model, 1-1/2" AMMT thread for 2-1/8" OD model, 2-3/8" PAC thread for 3-1/8" OD model, all models adopt unified modular integral assembly structure, convenient for standardized wellsite coiled tubing tool string assembly and matching selection according to on-site casing inner diameter specifications.
The Hydraulic Indexing Tool has no complex internal movable friction components, spring energy storage assemblies or separate wireline actuation mechanisms, with extremely simplified wellsite disassembly and assembly operation flow and low routine maintenance cost; construction crews only need to connect the top AMMT / PAC connection thread of the hydraulic indexing tool to the bottom end of the upper coiled tubing tool string, and connect the lower tool body to the subsequent directional sand jet perforating gun or directional washing nozzle assembly to complete the entire downhole tool string assembly work, then run the whole tool string down along the wellbore inner wall to the predetermined target construction depth to carry out normal low-pressure circulation running-in work; when directional rotation indexing action needs to be executed, only adjust the surface pump discharge pressure to rise to the pre-set actuation threshold to complete single 45° / 60° incremental rotation, then reduce pump pressure back to normal circulation pressure to lock the new azimuth position for subsequent directional perforation or washing construction work, no additional complicated auxiliary operation steps such as separate ball dropping or shear pin triggering are needed, effectively shortening wellsite construction operation time and reducing human error risks.
The standardized product lineup covers three standard matching outer diameter OD sizes (1-3/4", 2-1/8", 3-1/8"), each OD has two independent working condition material grade versions: STD standard carbon steel and H₂S sour service anti-sulfide corrosion alloy, all models adopt unified modular integral assembly structure with fixed corresponding overall make-up length and dedicated top connection thread specifications; custom indexing displacement stroke adjustment ranges, incremental rotation angle specifications (custom angle values beyond standard 45° / 60°), outer diameter OD sizes and connection thread specification modifications are available upon customer technical drawing submission.
Complete Technical Specification Table
| PN Part Number | Outer Diameter OD | Overall Make-Up Length | Working Condition Grade | Dedicated Top Connection Thread |
|---|---|---|---|---|
| L2071750120 | 1-3/4" | 29" | STD Standard Carbon Steel | 1" AMMT |
| L2072875120 | 2-1/8" | 26" | STD Standard Carbon Steel | 1-1/2" AMMT |
| L2073125120 | 3-1/8" | 30" | STD Standard Carbon Steel | 2-3/8" PAC |
| L2071750320 | 1-3/4" | 29" | H₂S Sour Service Anti-Sulfide Corrosion Alloy | 1" AMMT |
| L2072875320 | 2-1/8" | 26" | H₂S Sour Service Anti-Sulfide Corrosion Alloy | 1-1/2" AMMT |
| L2073125320 | 3-1/8" | 30" | H₂S Sour Service Anti-Sulfide Corrosion Alloy | 2-3/8" PAC |
Note: Custom indexing displacement stroke adjustment ranges, incremental rotation angle specifications (custom angle values beyond standard 45° / 60°), outer diameter OD sizes and connection thread specification modifications are available via engineering consultation. All standard specifications adopt two independent working condition material grade versions: STD standard carbon steel and H₂S sour service anti-sulfide stress corrosion alloy; three standard matching outer diameter OD sizes are provided: 1-3/4", 2-1/8", 3-1/8", each OD corresponds to fixed overall make-up length dimension and dedicated standard top connection thread specification.
Core Features & Advantages
Differential Pressure Driven Pure Hydraulic Indexing Rotation Actuation Design: The core indexing rotation actuation mechanism of the entire tool is fully driven by surface pump fluid pressure variation, no additional mechanical slack-off weight shifting operations or separate wireline intervention actuation mechanisms are required, eliminating complex auxiliary operation procedures and reducing the risk of downhole tool jamming failure caused by mechanical moving component wear or wireline sticking; two optional standard incremental angular rotation angle specifications are provided for free customer selection: fixed 45° single-step rotation or fixed 60° single-step rotation, matching different reservoir perforation coverage distribution density design requirements.
Fully Adjustable Indexing Displacement Stroke Structural Design: The axial travel distance of the internal actuation piston can be freely adjusted according to different downhole perforation coverage distribution trajectory design requirements, realizing flexible matching of incremental rotation angle and indexing stroke length, adapting to various complex wellbore trajectory and reservoir target layer perforation layout design schemes without replacing different tool main body assemblies.
Dual Independent Working Condition Material Grade Matching Design: Two independent working condition material grade versions are provided for free customer selection according to different downhole wellbore fluid corrosion environment requirements: Version one: STD standard carbon steel material, cost-effective, suitable for conventional low-sulfur, low-corrosion oil and gas well construction working conditions, meeting general medium-low pressure conventional well construction technical requirements; Version two: H₂S sour service special anti-sulfide stress corrosion alloy material, fully complies with NACE MR0175 international anti-sulfur corrosion standard, with excellent long-term resistance to hydrogen sulfide containing corrosive wellbore fluid erosion, effectively avoiding sulfide stress cracking (SSC) failure risks of tool structural parts under high H₂S concentration corrosive downhole environments, suitable for high sour oil and gas well construction severe working conditions.
Three Standard Matching Outer Diameter OD Size Series With Dedicated Standard Connection Threads: Three standard matching outer diameter OD size specifications are provided to cover mainstream oilfield coiled tubing tool string and casing inner diameter matching requirements: 1-3/4", 2-1/8", 3-1/8", each OD size corresponds to fixed overall make-up length dimension and dedicated standard top connection thread specifications (1" AMMT / 1-1/2" AMMT / 2-3/8" PAC), convenient for standardized wellsite coiled tubing tool string assembly and matching selection according to on-site casing inner diameter and upper coiled tubing tool string connection thread specifications, eliminating non-standard thread matching transformation work.
Dual Construction Operation Mode Compatible Design: The hydraulic indexing tool supports two independent core oilfield construction operation modes simultaneously: Mode one: directional sand jet perforation construction work, matched with subsequent sand jet perforating gun assemblies to realize fixed-angle directional perforation along pre-set azimuth trajectories; Mode two: targeted directional wellbore flushing washing construction work, matched with directional washing nozzle assemblies to realize directional concentrated wellbore debris flushing and cleaning operations, one single tool body can adapt to two different types of downhole construction operation demands, reducing customer spare parts inventory purchase and storage costs.
Ultra-Simplified Wellsite Operation Logic & Low Routine Maintenance Design: The hydraulic indexing tool has no complex internal movable friction components or spring energy storage assemblies, the overall modular integral assembly structure is compact and neat, the internal actuation piston and locking mechanical parts adopt wear-resistant integrated forming parts with long service life; the entire downhole tool string assembly and indexing rotation actuation operation flow is highly streamlined, only two groups of simple threaded connection steps are needed to complete the installation of the hydraulic indexing tool between upper coiled tubing tool string and lower perforating gun / washing nozzle assembly, no additional complicated auxiliary operation steps are required; after each downhole construction work is fully completed, only simple surface circulating fluid debris flushing cleaning and internal piston stroke travel & locking tooth surface wear inspection are required, no complex disassembly, internal actuation component replacement or spring preload adjustment maintenance procedures, greatly reducing daily maintenance labor and spare parts inventory cost.
Application Scenarios
1. Conventional low-sulfur low-corrosion oil and gas well coiled tubing directional sand jet perforation construction multi-function heavy-load intervention treatment operations, matched with sand jet perforating gun assemblies to realize fixed-angle directional perforation along pre-set azimuth trajectories
2. High hydrogen sulfide containing sour oil and gas well coiled tubing directional sand jet perforation construction heavy-load intervention treatment operations, NACE MR0175 H₂S sour service alloy material version applicable to severe high-sulfur corrosive downhole wellbore fluid environments
3. Conventional and sour oil and gas well coiled tubing targeted directional wellbore flushing washing construction auxiliary operations, matched with directional washing nozzle assemblies to realize directional concentrated wellbore debris flushing and cleaning work
4. Onshore and offshore oilfield coiled tubing well logging, sand jet perforation and wellbore cleaning multi-type construction operation matching construction operations, compatible with mainstream coiled tubing tool string connection specifications and subsequent directional perforating gun / washing nozzle assemblies
5. Medium-low pressure and high-pressure oil and gas well periodic reservoir re-development directional supplementary perforation construction maintenance operations, realizing uniform multi-angle distributed perforation coverage layout through repeated hydraulic indexing rotation cycles
Standard Delivery Package
Complete hydraulic indexing tool modular integral pre-assembled unit including top threaded connection sub, internal differential pressure actuation piston assembly, bidirectional locking mechanical tooth structure, and lower directional rotation output body
Spare interchangeable internal piston stroke limiting adjustment shim maintenance kit for on-site indexing displacement stroke adjustment and worn piston component replacement
Full factory inspection test report including repeated differential pressure actuation indexing rotation load fatigue resistance test, integral tensile load test, internal locking tooth surface wear resistance calibration test data
Product dimension drawing and official installation & operation instruction manual, with detailed on-site coiled tubing tool string assembly and hydraulic indexing rotation actuation construction operation guidance, with clear confirmation reminder for incremental rotation angle selection, indexing displacement stroke adjustment range setting and working condition material grade matching according to different well construction operation scheme demands during order placement
Quality Warranty & After-Sales Service
Warranty Coverage: 12 months after factory shipment or 2000 cumulative differential pressure actuation indexing rotation load cycles, whichever condition is reached first
Full factory inspection: Each finished hydraulic indexing tool modular integral unit passes integral tensile load test, repeated differential pressure actuation indexing rotation load fatigue test, internal locking tooth surface wear resistance calibration test before factory delivery
Free professional technical support: Our oilfield downhole tool engineering team provides coiled tubing tool string matching, outer diameter OD size selection, working condition material grade selection, indexing displacement stroke adjustment range customization consultation free of charge
Long-term spare parts supply: All interchangeable internal piston stroke limiting adjustment shim wear maintenance accessories are stocked with competitive factory bulk pricing
Custom development service: Support custom indexing displacement stroke adjustment range specifications, customized incremental rotation angle values (beyond standard 45° / 60°), outer diameter OD size modifications, connection thread specification changes and special size hydraulic indexing tool units based on customer technical drawings
FAQ
Q1: What is the core function of a Hydraulic Indexing Tool Differential Pressure Driven Directional Rotation Indexing Sub For Downhole Sand Jet Perforation & Directional Washing Operations?
The Hydraulic Indexing Tool differential pressure driven directional rotation indexing sub is a dedicated downhole tool developed for two core oilfield coiled tubing construction operation scenarios: directional sand jet perforation and targeted directional wellbore flushing washing. The entire tool adopts modular integral assembly structural design, and its core indexing rotation actuation mechanism is fully driven by surface pump fluid pressure variation, eliminating the need for additional mechanical slack-off weight shifting or separate wireline intervention operations. Working principle: During normal low-pressure circulation running-in stage, the internal piston and locking mechanism of the hydraulic indexing tool remain in the initial retracted position, and the tool body maintains fixed zero-degree azimuth orientation; when the surface pump discharge pressure is raised to the pre-calibrated preset actuation threshold value, the pressure difference between the internal tubing fluid channel and the outer annulus drives the built-in internal piston assembly to slide axially downward, which mechanically pushes the lower tool body to complete a single fixed incremental angular rotation, with two optional rotation angle specifications available: 45° or 60°; after the single incremental rotation action is completed, the surface pump pressure is reduced back to standard normal circulation working pressure, the internal piston resets upward and the built-in mechanical locking mechanism engages to securely hold the tool body in the newly indexed target azimuth position, allowing continuous stable directional sand jet perforation construction or targeted directional wellbore flushing washing work along the pre-set directional jet trajectory. The tool adopts fully adjustable indexing displacement stroke structural design, the axial travel distance of the internal actuation piston can be freely adjusted according to different downhole perforation coverage distribution trajectory design requirements, realizing flexible matching of incremental rotation angle and indexing stroke. Two independent working condition material grade options are provided for free customer selection according to different downhole wellbore fluid corrosion environment requirements: STD standard carbon steel material for conventional low-corrosion well construction conditions, and H₂S sour service special anti-sulfide stress corrosion alloy material complying with NACE MR0175 standard for high hydrogen sulfide content corrosive downhole construction environments. Three standard matching outer diameter sizes are supported: 1-3/4 inch, 2-1/8 inch and 3-1/8 inch, each OD corresponds to fixed overall make-up length dimension and dedicated standard top connection thread specifications (1" AMMT / 1-1/2" AMMT / 2-3/8" PAC), all models adopt unified modular integral assembly structure, widely applied for conventional and sour oil and gas well coiled tubing directional sand jet perforation construction operations and targeted directional wellbore flushing washing auxiliary construction operations, providing fully differential pressure driven automatic directional indexing rotation function without additional auxiliary operation steps.
Q2: What three core structural advantages does this Hydraulic Indexing Tool Differential Pressure Driven Directional Rotation Indexing Sub For Downhole Sand Jet Perforation & Directional Washing Operations own?
1. Differential pressure driven pure hydraulic indexing rotation actuation design, the core indexing rotation actuation mechanism of the entire tool is fully driven by surface pump fluid pressure variation, no additional mechanical slack-off weight shifting operations or separate wireline intervention actuation mechanisms are required, eliminating complex auxiliary operation procedures and reducing the risk of downhole tool jamming failure caused by mechanical moving component wear or wireline sticking; two optional standard incremental angular rotation angle specifications are provided for free customer selection: fixed 45° single-step rotation or fixed 60° single-step rotation, matching different reservoir perforation coverage distribution density design requirements; 2. Fully adjustable indexing displacement stroke structural design & dual independent working condition material grade matching design, the axial travel distance of the internal actuation piston can be freely adjusted according to different downhole perforation coverage distribution trajectory design requirements, realizing flexible matching of incremental rotation angle and indexing stroke length, adapting to various complex wellbore trajectory and reservoir target layer perforation layout design schemes without replacing different tool main body assemblies; two independent working condition material grade versions are provided for free customer selection according to different downhole wellbore fluid corrosion environment requirements: Version one: STD standard carbon steel material, cost-effective, suitable for conventional low-sulfur, low-corrosion oil and gas well construction working conditions, meeting general medium-low pressure conventional well construction technical requirements; Version two: H₂S sour service special anti-sulfide stress corrosion alloy material, fully complies with NACE MR0175 international anti-sulfur corrosion standard, with excellent long-term resistance to hydrogen sulfide containing corrosive wellbore fluid erosion, effectively avoiding sulfide stress cracking (SSC) failure risks of tool structural parts under high H₂S concentration corrosive downhole environments, suitable for high sour oil and gas well construction severe working conditions; 3. Three standard matching outer diameter OD size series with dedicated standard connection threads & dual construction operation mode compatible design ultra-simplified wellsite operation logic, three standard matching outer diameter OD size specifications are provided to cover mainstream oilfield coiled tubing tool string and casing inner diameter matching requirements: 1-3/4", 2-1/8", 3-1/8", each OD size corresponds to fixed overall make-up length dimension and dedicated standard top connection thread specifications (1" AMMT / 1-1/2" AMMT / 2-3/8" PAC), convenient for standardized wellsite coiled tubing tool string assembly and matching selection according to on-site casing inner diameter and upper coiled tubing tool string connection thread specifications, eliminating non-standard thread matching transformation work; the hydraulic indexing tool supports two independent core oilfield construction operation modes simultaneously: Mode one: directional sand jet perforation construction work, matched with subsequent sand jet perforating gun assemblies to realize fixed-angle directional perforation along pre-set azimuth trajectories; Mode two: targeted directional wellbore flushing washing construction work, matched with directional washing nozzle assemblies to realize directional concentrated wellbore debris flushing and cleaning operations, one single tool body can adapt to two different types of downhole construction operation demands, reducing customer spare parts inventory purchase and storage costs; the hydraulic indexing tool has no complex internal movable friction components or spring energy storage assemblies, the overall modular integral assembly structure is compact and neat, the internal actuation piston and locking mechanical parts adopt wear-resistant integrated forming parts with long service life; the entire downhole tool string assembly and indexing rotation actuation operation flow is highly streamlined, only two groups of simple threaded connection steps are needed to complete the installation of the hydraulic indexing tool between upper coiled tubing tool string and lower perforating gun / washing nozzle assembly, no additional complicated auxiliary operation steps are required; after each downhole construction work is fully completed, only simple surface circulating fluid debris flushing cleaning and internal piston stroke travel & locking tooth surface wear inspection are required, no complex disassembly, internal actuation component replacement or spring preload adjustment maintenance procedures, greatly reducing daily maintenance labor and spare parts inventory cost.
Q3: What matching coiled tubing tool string connection specifications and configurable options do these Hydraulic Indexing Tool Differential Pressure Driven Directional Rotation Indexing Sub For Downhole Sand Jet Perforation & Directional Washing Operations support?
Our standard applicable matching outer diameter OD size range covers 1-3/4", 2-1/8", 3-1/8". Each OD size supports four independent configurable options for free matching selection: indexing displacement stroke adjustment range specification, incremental rotation angle value, working condition material grade, custom connection thread specification. All models support custom indexing displacement stroke adjustment range specifications upon customer request. Three standard matching outer diameter OD size sizes correspond to fixed overall make-up length dimensions and unified dedicated top connection thread specifications respectively (1" AMMT / 1-1/2" AMMT / 2-3/8" PAC). Two independent working condition material grade versions are also optional for each OD size: STD standard carbon steel working condition grade and H₂S sour service high-corrosion-resistant alloy working condition grade. Custom indexing displacement stroke adjustment range specifications, customized incremental rotation angle values (beyond standard 45° / 60°), outer diameter OD size modifications, connection thread specification changes and special size hydraulic indexing tool units 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 hydraulic indexing tool units with special indexing displacement stroke adjustment range specifications, customized incremental rotation angle values, outer diameter OD size modifications, connection thread specification changes or working condition material grade upgrades 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 coiled tubing downhole directional sand jet perforation and wellbore washing construction multi-function heavy-load intervention treatment service tools, covering hydraulic indexing tools, differential sliding sleeve jetting subs, integrated sand jetting subs, logging motorhead assemblies, surface cable 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 differential pressure actuation indexing rotation load fatigue, internal locking tooth surface wear resistance calibration testing, with complete material inspection certification attached to each shipment. Please share your detailed technical requirements, including target matching coiled tubing tool string connection thread specification, required outer diameter OD size, indexing displacement stroke adjustment range selection, incremental rotation angle value choice, working condition material 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 tool string assembly and hydraulic indexing rotation actuation construction operation guidance, with clear confirmation reminder for incremental rotation angle selection, indexing displacement stroke adjustment range setting and working condition material grade matching according to different well construction operation scheme demands during order placement.
