Product Overview
The Single Check Valve Pump Plug coiled tubing velocity string running dual-function pump-in barrier plug is a multi-function downhole barrier tool developed for coiled tubing velocity string installation construction operations.
This pump plug is installed at the bottom end of the coiled tubing string before running the velocity string into the wellbore; the internal single ball one-way check valve module permits continuous downward pumping fluid through the coiled tubing string during the whole run-in operation, and the ball valve automatically closes to block reverse upward backflow of wellbore high-pressure fluid to avoid impact damage to surface coiled tubing equipment. After the coiled tubing string is lowered to the predetermined target suspension depth underground, drop a sealing ball from the surface pipeline to make the ball land and seat on the built-in tool ball seat; increase surface pumping pressure to reach the preset shear pin breaking threshold, shear the pin to rupture the internal single check valve module, thereby completely removing the valve flow barrier and establishing full circulation channel between coiled tubing inner bore and wellbore annulus to realize subsequent circulation operation. An independent built-in dart capture receiving chamber is arranged inside the plug body behind the rupturable check valve module; after the follow-up construction work is finished and the coiled tubing string needs to be recovered, a throwing dart can be pumped down from the surface, the dart is fully captured by the internal dart receiver to form secondary plug isolation barrier, completely isolate wellbore annulus fluid pressure to facilitate safe coiled tubing lifting and recovery operation. The shear pin breaking pressure threshold can be freely customized and adjusted according to different downhole construction pressure demand; the core internal flow control structure adopts mature ball type one-way check valve design; all standard specifications adopt STD standard working condition configuration, equipped with standard Roll-On type connecting thread, four matching coiled tubing outer diameter sizes are available: 1-1/4 inch, 1-1/2 inch, 1-3/4 inch and 2 inch, each CT OD corresponds to fixed overall make-up length dimension.
The Single Check Valve Pump Plug 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 single check valve pump plug to the bottom end of the coiled tubing string via Roll-On connector, run the whole tool string down along the tubing inner wall to the predetermined underground suspension depth, continuously pump fluid downward through the check valve during run-in; after reaching target depth, drop ball from surface, raise pumping pressure to shear pin and rupture internal check valve module to open full wellbore circulation channel for follow-up construction; after construction is completed and coiled tubing recovery is required, pump throwing dart down from surface to be captured by internal dart receiver to form secondary isolation barrier, then lift the coiled tubing string together with the whole pump plug out of the wellbore to finish recovery operation, no additional complex 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 four standard matching coiled tubing outer diameter sizes of 1-1/4", 1-1/2", 1-3/4" and 2", each CT OD corresponds to fixed overall make-up length dimension, all models adopt STD standard working condition configuration, unified standard Roll-On type connecting thread; custom shear pin breaking pressure threshold, matching coiled tubing outer diameter size and internal dart receiver structural form 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 | Working Condition Grade | Standard Connection Thread |
|---|---|---|---|---|---|
| L5151250120 | 1-1/4" | 0.63" | 9" | STD Standard | Roll-On Connector |
| L5151500120 | 1-1/2" | 0.79" | 8.9" | STD Standard | Roll-On Connector |
| L5151750120 | 1-3/4" | 0.99" | 11.5" | STD Standard | Roll-On Connector |
| L5152000120 | 2" | 11.9" | 13.2" | STD Standard | Roll-On Connector |
Note: Custom shear pin breaking pressure threshold, matching coiled tubing outer diameter sizes and internal dart receiver structural form modifications are available via engineering consultation. All standard specifications adopt STD standard working condition configuration, unified standard Roll-On type connecting thread; four standard matching coiled tubing outer diameter sizes are provided: 1-1/4", 1-1/2", 1-3/4", 2", each CT OD corresponds to fixed overall make-up length dimension.
Core Features & Advantages
Adjustable Shear Pin Breaking Pressure Threshold Design: The shear pin shear failure threshold can be freely customized and adjusted according to different downhole construction pressure demand, realize controllable valve module rupture action after reaching the predetermined target underground depth, avoid accidental premature pin shearing caused by abnormal wellbore pressure fluctuation.
Built-In Independent Internal Dart Capture Receiving Chamber Design: An independent dart receiving chamber is pre-installed inside the plug body behind the rupturable check valve module, which can fully capture the throwing dart dropped from surface, form secondary plug isolation barrier after dart seating, completely isolate wellbore annulus fluid pressure to facilitate safe coiled tubing string lifting and recovery operation in later workover.
Ball Type One-Way Check Valve Internal Flow Control Module Design: The single ball one-way valve structure allows unobstructed downward pumping fluid during coiled tubing run-in operation, while the ball valve automatically closes under reverse wellbore fluid pressure to block upward backflow, effectively prevent wellbore high-pressure fluid reverse impact damage to surface coiled tubing equipment.
Standard Roll-On Type Connecting Thread Configuration Design: All standard models adopt unified standard Roll-On type connecting thread, which is fully matched with mainstream coiled tubing bottom connector specifications, realizing fast and convenient on-site tool string assembly and disassembly operation.
Ultra-Simplified Wellsite Operation Logic: The single check valve pump plug has no complex internal movable friction components, spring energy storage assemblies or differential pressure release mechanisms, the operation flow is highly streamlined: connect the pump plug to coiled tubing bottom via Roll-On connector, run the tool string down to target underground suspension depth, continuously pump fluid downward through the built-in single ball check valve during run-in; after reaching target depth, drop sealing ball from surface, raise pumping pressure to shear the preset pin and rupture internal check valve module to open full wellbore circulation channel for follow-up construction work; after construction is finished and coiled tubing recovery is required, pump throwing dart down from surface to be fully captured by internal dart receiving chamber to form secondary isolation barrier, then lift the coiled tubing string together with the whole pump plug out of the wellbore to complete recovery operation, 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 plug body eliminates vulnerable split assembly movable wear parts; after each wellhead coiled tubing velocity string installation construction operation, only simple surface circulating fluid debris cleaning and internal ball check valve & shear pin wear inspection are required, no complex disassembly, internal ball valve or shear pin replacement or spring preload adjustment maintenance procedures, greatly reducing daily maintenance labor and spare parts inventory cost.
Application Scenarios
1. Coiled tubing velocity string installation construction multi-function heavy-load intervention treatments, including downhole pump-in fluid during velocity string run-in, valve rupture full circulation opening after target depth, and secondary plug isolation for later coiled tubing recovery remedial workover construction operations
2. Conventional sweet crude oilfield adjustable shear pin single ball check valve pump plug velocity string installation remedial workover service (STD Standard carbon steel working condition grade)
3. High-sulfur H₂S containing corrosive downhole wellbore fluid construction project velocity string installation multi-function heavy workover projects requiring H₂S sour service anti-sulfide stress corrosion alloy material grade
4. Long-term continuous single ball check valve fluid flow control & dart capture secondary isolation load safety protection for wellhead coiled tubing velocity string installation tool string assemblies in onshore and offshore oilfield coiled tubing remedial workover intervention projects
Standard Delivery Package
Complete single check valve pump plug integral cylindrical pre-assembled unit including main plug body, internal single ball one-way check valve module, adjustable shear pin assembly and built-in internal dart capture receiving chamber
Spare interchangeable single ball check valve ball element & shear pin maintenance kit for on-site worn ball valve or shear pin component replacement
Full factory inspection test report including repeated single ball check valve fluid flow control load fatigue resistance test, integral tensile load test, different shear pin breaking pressure threshold rupture performance calibration test data
Product dimension drawing and official installation & operation instruction manual, with detailed on-site coiled tubing velocity string installation construction operation guidance, with clear confirmation reminder for shear pin breaking pressure threshold selection according to different downhole construction pressure demand during order placement
Quality Warranty & After-Sales Service
Warranty Coverage: 12 months after factory shipment or 2000 cumulative single ball check valve fluid flow control load cycles, whichever condition is reached first
Full factory inspection: Each finished single check valve pump plug passes integral tensile load test, repeated single ball check valve fluid flow control load fatigue test, different shear pin breaking pressure threshold rupture performance calibration test before factory delivery
Free professional technical support: Our oilfield downhole tool engineering team provides coiled tubing velocity string installation remedial workover tool string matching, matching coiled tubing outer diameter size & shear pin breaking pressure threshold selection consultation free of charge
Long-term spare parts supply: All interchangeable single ball check valve ball element & shear pin wear maintenance accessories are stocked with competitive factory bulk pricing
Custom development service: Support custom shear pin breaking pressure threshold specifications, customized matching coiled tubing outer diameter sizes, internal dart receiver structural form adjustment, base material corrosion resistance grade modification and special size single check valve pump plugs based on customer technical drawings
FAQ
Q1: What is the core function of a Single Check Valve Pump Plug Coiled Tubing Velocity String Running Dual-Function Pump-In Barrier Plug?
The Single Check Valve Pump Plug coiled tubing velocity string running dual-function pump-in barrier plug is a multi-function downhole barrier tool developed for coiled tubing velocity string installation construction operations. This pump plug is installed at the bottom end of the coiled tubing string before running the velocity string into the wellbore; the internal single ball one-way check valve module permits continuous downward pumping fluid through the coiled tubing string during the whole run-in operation, and the ball valve automatically closes to block reverse upward backflow of wellbore high-pressure fluid to avoid impact damage to surface coiled tubing equipment. After the coiled tubing string is lowered to the predetermined target suspension depth underground, drop a sealing ball from the surface pipeline to make the ball land and seat on the built-in tool ball seat; increase surface pumping pressure to reach the preset shear pin breaking threshold, shear the pin to rupture the internal single check valve module, thereby completely removing the valve flow barrier and establishing full circulation channel between coiled tubing inner bore and wellbore annulus to realize subsequent circulation operation. An independent built-in dart capture receiving chamber is arranged inside the plug body behind the rupturable check valve module; after the follow-up construction work is finished and the coiled tubing string needs to be recovered, a throwing dart can be pumped down from the surface, the dart is fully captured by the internal dart receiver to form secondary plug isolation barrier, completely isolate wellbore annulus fluid pressure to facilitate safe coiled tubing lifting and recovery operation. The shear pin breaking pressure threshold can be freely customized and adjusted according to different downhole construction pressure demand; the core internal flow control structure adopts mature ball type one-way check valve design; all standard specifications adopt STD standard working condition configuration, equipped with standard Roll-On type connecting thread, four matching coiled tubing outer diameter sizes are available: 1-1/4 inch, 1-1/2 inch, 1-3/4 inch and 2 inch. No complex internal movable friction components or spring assemblies are equipped, operation flow is highly simplified, widely applied for coiled tubing velocity string installation multi-function pump-in barrier and secondary isolation remedial workover construction operations.
Q2: What three core structural advantages does this Single Check Valve Pump Plug Coiled Tubing Velocity String Running Dual-Function Pump-In Barrier Plug own?
1. Adjustable shear pin breaking pressure threshold design, the shear pin shear failure threshold can be freely customized and adjusted according to different downhole construction pressure demand, realize controllable valve module rupture action after reaching the predetermined target underground depth, avoid accidental premature pin shearing caused by abnormal wellbore pressure fluctuation; 2. Built-in independent internal dart capture receiving chamber design, an independent dart receiving chamber is pre-installed inside the plug body behind the rupturable check valve module, which can fully capture the throwing dart dropped from surface, form secondary plug isolation barrier after dart seating, completely isolate wellbore annulus fluid pressure to facilitate safe coiled tubing string lifting and recovery operation in later workover; 3. Ball type one-way check valve internal flow control module design & ultra-simplified wellsite operation logic, the single ball one-way valve structure allows unobstructed downward pumping fluid during coiled tubing run-in operation, while the ball valve automatically closes under reverse wellbore fluid pressure to block upward backflow, effectively prevent wellbore high-pressure fluid reverse impact damage to surface coiled tubing equipment; the single check valve pump plug has no complex internal movable friction components, spring energy storage assemblies or differential pressure release mechanisms, only need to connect the pump plug to the coiled tubing bottom via Roll-On connector, run the tool string down to target underground suspension depth, continuously pump fluid downward through the built-in single ball check valve during run-in; after reaching target depth, drop ball from surface, raise pumping pressure to shear pin and rupture internal check valve module to open full wellbore circulation channel for follow-up construction work; after construction is completed and coiled tubing recovery is required, pump throwing dart down from surface to be captured by internal dart receiver to form secondary isolation barrier, then lift the coiled tubing string together with the whole pump plug out of the wellbore to finish recovery operation, 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 four complete standard matching coiled tubing outer diameter size series and integral cylindrical alloy steel plug body low maintenance design to further expand applicable construction scope and reduce post-operation maintenance workload.
Q3: What matching coiled tubing outer diameter sizes and configurable options do these Single Check Valve Pump Plug Coiled Tubing Velocity String Running Dual-Function Pump-In Barrier Plugs support?
Our standard applicable matching coiled tubing outer diameter size range covers 1-1/4", 1-1/2", 1-3/4", 2". Each CT OD size supports two independent configurable options for free matching selection: adjustable shear pin breaking pressure threshold, internal dart capture receiver structural form. All models support custom base material corrosion resistance grade specifications upon customer request. The unified standard Roll-On type connecting thread is adopted for all standard models, four standard matching coiled tubing outer diameter sizes correspond to fixed overall make-up length dimensions 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 shear pin breaking pressure threshold specifications and internal dart receiver structural form adjustments 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 single check valve pump plugs with special matching coiled tubing outer diameter sizes or customized shear pin breaking pressure threshold specifications, internal dart receiver structural form 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 velocity string installation multi-function pump-in barrier and secondary isolation remedial workover service tools, covering single check valve pump plugs, 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 single ball check valve fluid flow control load fatigue, different shear pin breaking pressure threshold rupture 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 shear pin breaking pressure threshold, 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 velocity string installation construction operation guidance, with clear confirmation reminder for shear pin breaking pressure threshold selection according to different downhole construction pressure demand during order placement.
