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Drilling tools _Drill reduce hole opener_KW-DT-04

Product Details

Drill reduce hole opener



The application of drilling hole opener can improve the hole quality. Meanwhile, it can save rig using time. Another benefit is the ability of continuous drilling, reducing the number of drilling and reaming. Therefore, the benefit of drilling reamer is: can quickly drill a smooth implementation of concentric hole, reduce the losses of drilling rig caused by taking up much of rig time in lowering the casing, tripping and completion so as to achieve the completion ahead of schedule and cost savings.

Specification:

Body OD mm(in)ConnectionOpen Scope mm(in)Working Displacement L/SWorking WOB   kN   (Ibf)Max allowable tensile load kN(Ibf)Allow able working torque kN ·m (Ibf ·ft)Length (mm)
114    (4 1/4)NC31118-125   (4 5/8-4 7/8)≥620-50 (4500-11000)700 (157000)6(4425)1960
150   (5 7/8)NC38150-178(5 7/8-7)≥620-50 (4500-11000)1145 (257000)12.8(9441)1954
230 (8)NC50216-245(8 1/2-9 5/8)≥620-50 (4500-11000)2221 (500000)36(26550)2782
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Grinding Reamer

Drilling highly reactive, consolidated. inter-bedded and similarly troublesome zones, especially with tortuous extended reach well paths, always induces nonproductive time (NPT) to deal with stuck pipe and other wellbore instability issues. Project costs are further aggravated when post-drilling reaming runs are required to minimize tortuosity and condition the wellbore for the completion and production hardware.

Features:
- Proprietary forced balanced bi-directional cutting structure
- Consistently drill ahead in tightest well paths and at higher ROP.
- Construct a clean, in-gauge wellbore while drilling
- Mitigates the persistent risks of stuck pipe when rotating out of
- Prevent tight and highly restrictive holes.
- Available in non-magnetic and steel alloy materials

Benefits:
- Minimal NPT (Nonproductive Time) while drilling and tripping
- Faster drilling rates with lower torque and drag than conventional tools
- Enhanced wellbore stability
- Reduced costs
- Elimination of dedicated reaming trips
- Unimpaired MWD/LWD logs
- Increased durability for longer runs
- Effective reaming without the need for conventional and often obstructive stabilizers
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Multi-stage Hole opener

Description:
Multi-stage Hole opener is a processing fixed diameter concentric PDC hole opener designed for fast, smooth and durable concentric hole opening in a wide variety of hole diameters, formations and application conditions.The procedure are conjunctive to work in order to provide smooth reliable performance on either rotary or rotary steerable assemblies, for both vertical and directional applications.

Features:
- Straightforward single-body FEA-modeled tool design
- Application-specific Trident PDC cutters
- Increase working area for higher cutter count and density
- Optimize gauge design for directional responsiveness
- Integral stabilization, centralization and hole condition
- Integrate hydraulics for improved hole cleaning

Benefits:
- High quality hole opening at an aggressive ROP
- Improving bit stability while drilling ahead
- Suitable for both conventional steerable motor and RSS systems
- Operational simplicity and reliability with no moving parts
- Back ream through tight spots, ledges and doglegs
- Configurable with roller cone, PDC our bull nose
- Applicable in a wide range of drill string or BHA configurations

Specification:

TypeHole open dia.(in)Qty of cutterMin. pilot hole(in)Fishing neck dia.(in)I.D(in)Top Conn. (pin)Bottom Conn.(box)Overall length(in)
KW 31112 1/438 1/281 1/26 5/8REG6 5/8REG55
KW 406163109 1/22 1/47 5/8REG7 5/8REG59
KW 44417 1/23109 1/22 1/47 5/8REG7 5/8REG59
KW
559
22312 3/49 1/22 1/37 5/8REG7 5/8REG69
KW 58423312 3/4836 5/8REG6 5/8REG69
KW 610243141037 5/8REG7 5/8REG69
KW 66026317 1/21037 5/8REG7 5/8REG69
KW 4-91436426103 1/27 5/8REG7 5/8REG87
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Whirligig Roller Reamers

Description:

Whirligig Roller Reamers offer a low torque solution to borehole gauge maintenance. By lowering torque and drag, stick slip and BHA vibration, drilling efficiencies can be greatly improved, resulting in significantly lower cost per foot drilling. Improved weight transfer and lower vibration and extended life of the bit and motor. There is less wear on the tool less damage to the hole wall formation and lower torque as compared to traditional fixed blade reamers and stabilizers with a rotating element cutting action.
By conditioning the wellbore mechanically, removing tight spots, formations ledges, micro doglegs and spiraling, a smoother wellbore wall profile will aid in the drilling, logging, coring and casing processes of well construction. By allowing longer runs in complex ERD well, lowering the incidents of stuck pipe, significantly reducing trip times, improved bit and coring performance, easier wire line logging, and faster running of casing or liner strings.

Features:

1. Secure Cutter Retention
Two methods of retention are required for reliably holding the rolling cutters in place.
-Static retention of the cutters into the tool body with an innovative dual wedge block system, locking the cutters securely into the body in both the axial and radial directions.
-Dynamic retention of the rolling cutters onto the bearing shaft with oversize anti-friction ball bearing system, which is fully internal to the bearing package. No load bearing elements outside of the seal system generating heat and shortening the life of the seal.
2. Pressure Compensated - Pressure Relieved Lubrication System
It feature an integral pressure compensation system, a large volume grease reservoir and an internal pressure relief valve. With strategically placed lubrication passageways, this system ensures adequate bearing lubrication over an extended run time, even in highest downhole pressure environments, without seal damage or leakage from differential pressures.
3. Advanced Technology Seal and Bearing Package
Large diameter O-ring seals, labyrinth seal protector, floating silver plated high strength alloy bushings and specially formulated synthetic grease. Optional mechanical face seal where high rpm and high bottom hole temperatures.





Benefits:
1. Reduces BHA torque and stick slip compared to conventional stabilizers
2. Efficiently eliminates ledges, hole tortuosity and micro doglegs
3. Compacts mud filter cake versus scraping
4. Back reams more efficiently than stabilizers or drill bits
5. Replaces conventional fixed blade stabilizers and reamers

Specification:

Hole sizeBody OD (in)Body ID (in)Fishing Nick Length   (in)Fishing Neck Diameter (in)Overall Length(in)Dressed Body Weight   (Ibs)
5 7/8-6 1/24 3/41 1/4-1 3/4404 3/480225-250
7 7/8-8 3/46 1/22 1/4456 1/295450-575
9 7/86 1/2-82 13/16506 1/2-8110775
1182 13/165581251000
12 1/8-12 1/48 or 9 1/21 23/16608-9 1/21301250
14 3/4 to 269 1/22 13/16709 1/21501800-4000



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PDC REAMER

Reduces drilling NPT and gives you a clean path to completion

Drilling highly reactive, unconsolidated, inter-bedded and similarly troublesome zones, especially with tortuous extended reach well paths, all-too-often induces non-productive time (NPT) to deal with stuck pipe and other wellbore instability issues. Project costs are further aggravated when post-drilling reaming runs are required to minimize tortuosity and condition the wellbore for the completion and production hardware.



Benefits:

• Minimal NPT while drilling and tripping
• Faster drilling rates with lower torque and drag than conventional tools
• Enhanced wellbore stability
• Reduced costs
• Elimination of dedicated reaming trips
• Unimpaired MWD/LWD logs
• Increased durability for longer runs
• Effective reaming without the need for conventional and often obstructive stabilizers
• A smooth and ready-for-completion wellbore

Main sizes we can machine:

6” PDC Reamer
8 3/8” PDC Reamer
8 3/8” NM PDC Reamer
12 1/8” PDC Reamer
15 6/8” PDC Reamer
16” PDC Reamer
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Fixed diameter hole opener

Features & Benefits:
The KINGWELL fixed diameter hole opener is a general hole enlarging tool. It is used to enlarge hole during drilling and connected with a bit on front end to drill pilot hole and enlarge hole simultaneously.
The cutters can replace according to the different hardness of formation

Technical Data:
TypeHole open dia.(in)Qty of cutterMin. pilot hole(in)Fishing neck dia.(in)I.D(in)Top Conn. (pin)Bottom Conn.(box)Overall length(in)
KW 31112 1/438 1/281 1/26 5/8REG6 5/8REG55
KW 406163109 1/22 1/47 5/8REG7 5/8REG59
KW 44417 1/23109 1/22 1/47 5/8REG7 5/8REG59
KW 55922312 3/49 1/22 1/37 5/8REG7 5/8REG69
KW 58423312 3/4836 5/8REG6 5/8REG69
KW 610243141037 5/8REG7 5/8REG69
KW 66026317 1/21037 5/8REG7 5/8REG69
KW 4-91436426103 1/27 5/8REG7 5/8REG87


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Hydraulically activated blade under reamer

Hydraulic drag type under reamer, enlarge the hole below the casing, rubber piston cup is designed for fluid or air drilling. It is a kind of high-efficient hydraulic under reamer specially designed for enlarging the borehole below casing in the oil/gas wells. With the pilot shoe, it can be used for reaming after drilling. Also, with the drill bit, it can be used for reaming while drilling. The primary uses for this type of tool is to provide clearance for running casing, to obtain adequate annular space for cementing, to enlarge zones for gravel pack completion or tie back anchor holes.
Recommended for use in sand, dirt, clay, sand rock, sandstone, and hard shale formations.
Features:
1. Applied hydraulic pressure acts on the internal piston and moves blades open to ream the hole.
2. Applied blades with special triangle structure to enhance the reaming efficiency.
3. It comes with 3 large-section cutting arms, each fitted with two rows of Polycrystalline Diamond Compacts for maximum reaming.
4. Applied high strength alloy steel to make the body of the reamer for reaming in the deep to ultradeep well.

Applications:
1. Realize the reduced clearance casing programs (RCCPS) to reduce the drilling cost.
2. Solve the complex problems caused by creepage of salt-gypsum layer via reaming out the salt-gypsum section.
3. Increase the thickness of the cement mantle between the casing and the hole in the small hole to improve the cement job quality.
We can supply all sizes of hydraulic under reamers according to the requirements.
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Integrity Under reamer
Description:
Underreamer is a simple and reliable solution to the drilling inefficiencies and out-of-gauge wellbores that can increase hole enlargement costs exponentially. Whether enlarging an existing wellbore or reaming-while-drilling new hole, the tools delivers the utmost in durability regardless of the formation or operating parameters. This versatile tool comprises a single-piece body engineered to ensure a robust low-mass design. This concentric symmetric mass-balanced design provides optimum hole opening ratios up to 25%, with increased flows around the tool for enhanced hole cleaning and reduced downhole vibration.
Features:
- Suitable for all formations
- Straightforward shgie-body design
- Application-spectfic Trident POC cutter blocks
- Superior mechanical force advantage
- Adjustable jet nozzles with integrated flow paths
- Hydraulic activation through ball drop or controlled pressure drop
- Concentric symmetric mass-balanced design
- Track feed design for securing and deploying cutters
- Bi-directionai capability
- Cutter deployment independent of BHA weight, formation strength and operating   parameters.
Benefits:
- Enlarges hole while drilling in single run
- Ensures smooth engagement for consistent full-gauge wellbore
- Provides high stress tolerance and maximum durability
- Reduces drill string vibration
- Improves drilling efficiency, BHA stabilization
- Promotes full or low flow through BHA
- Enhances hole cleaning
- Optimizes hole opening ratios of up to 25%
- Promotes operational simplicity, reliability
- Reduces non-productive time (NPT) and costs

Specification:
Operating recommendation: US Units   SI Units
Minimal pilot hole size:   8.375 Inch 212.7mm
Minimal collapsed diameter: 8.25Inch 209.6 mm
Maximum recommended operating Row: 760 gpm 2880 Ipm
Maximum drilling torque: 18.4 kft-Ib 25kNm
Make-up torque tool subs: 38.2-42.0 kft-Ib 51.7-56.9 kNm
Minimum operating pressure: 610 psi 4.2 Mpa
Maximum operating pressure :2900 psi 20Mpa
Maximum operating temperature: 356 F 180C
Maximum hydrostatic pressure: No limitation

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Multi-cycle Bypass Valve
1. Structure composition
Multi-cycle is the novel cycle joint that can achieve the unrestricted free conversion between the outside circulation and the normal circulation. Mainly consists of three parts: the shell, the valve element and the spring.   

2. operating principle
After pitching, the Bypass Valve change the pumping pressure to switch cycle channel and then complete different process tasks
                             

1.Normal cycle status    2.bypass cycle status       3.After pitching, using the pumping pressure to shear the non-metallic ball and then return to normal cycle
3. Features/Advantage

1). Pitch number:3 pcs
2). Pitch size:can choose according to need
3). The method of cycle conversion for start-up tool: when pitch entered into valve seat,stop pump 30 ~ 90s and start the pump circulation then can start the operation.
4). Pressure range of the circulation mode switching: 1.4MPa~5.6MPa
5). Circulation mode:unrestricted free conversion
6). Special tailor-made:can customize the type of valve core for through logging cable and other cable tool

4. Work effect
1). Save the drilling cycle. Pitch conduct plugging operation when leakage of well and the pitch is plugging operations. After plugging, the tool shear pitches and switch to the normal circulation patterns then do normal drilling operation. It save the drilling cycle.
2). Have multiple switch function, can achieve the unrestricted free conversion between the outside circulation and the normal circulation.
3). Open threshold displacement can be selected according to the actual situation.

5. The application range
Well leakage
Well repair/well completion
Horizontal well drilling
Acidification and increase production in horizontal wells
Special coring service
Under balanced drilling
The center position of drill string to improve cycle efficiency


6. Specification

ModelKW121KW165KW203
Tool OD (in.)43/4"(121mm)61/2"(165mm)8"(203mm)
Tool ID (in.))11/4"(31.75mm)2"(50mm)2.36"(60mm)
Tool length (mm)110012001300
Tensile load Max.(kN)220055007920
Flow rate Max. (L/s)234765
Flow rate Min. (L/s)112335
Torsional load Min. (kN·m)4068150
Flow area before the pitch (mm2)125617503316.6
Flow area of outside cycle(mm2)615.47801775.9
Flow area of normal cycle(mm2)632.512601358.3
Temperature rating (℃)150150150
Under pressure Max.(MPa)353535
Pitch diameter (mm)36、38、4055、57.5、6062、63、65
Tool pressure drop in pre start time (rinsing) (MPa)0.4 (18L/s)0.6 (28L/s)0.7 (63 L/s)


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  Anti abrasion joint series
Features:
1. The wearing bush enhanced with PTFE as a whole sintering, in the use of going underground without falling off and falling block.
2. The surface friction coefficient of the wearing bush is very low, and the wearing bush has a strong self lubrication performance, greatly reduced the wear of the casing.
3. The anti abrasion joint has a high wear resistance.
4. The wearing bush enhanced with PTFE , its temperature reached 200 degrees above, there is good resistance to acid and alkali.
6. Has a good performance of reducing torsion, the wear resistance decreased by 20%, the torque decreased by about 30%.
7. The structure is simple, and is convenient for the field installation and use.

Specification
Anti abrasion joint Type(F-nonmetal,J-metal)Wearing bush work   OD(mm)Casing OD(mm)Length (mm)Connection Thread Type
AAj(J)K146142-146177.8770-790NC38
AAj(J)K150155-156193.7770-790NC46
AAj(J)K206175-210244.5940-960NC50
AAj(J)K260260-300339.71040-10605 1/2〞FH

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Anti-drag, Reduce Torque Double-acting Stabilizer Series
Features:
1. Stabilizer coat with the roller design, when the drill up and down movement, its means of friction by sliding friction into rolling friction, thereby significantly reducing drilling tools to lower friction resistance.
2. Drill string for the spindle rotates friction with the friction between stabilizer coat, the rolling friction between roller and sidewall stabilizer coat, greatly reduce the friction resistance, so that the shaft of the drill string friction torque is greatly reduced.
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Rotary drill pipe protector series
Features:
1. The wearing bush enhanced with PTFE as a whole sintering, in the use of going underground without falling off and falling block.
2. The surface friction coefficient of the wearing bush is very low, and the wearing bush has a strong self lubrication performance, greatly reduced the wear of the casing.
3. The anti abrasion joint has a high wear resistance.
4. The wear proof sleeve can rotate freely between the fixing ring and the inner sleeve, thereby reducing the friction resistance between the sleeve and the sleeve, and improving the service life of the sleeve.
5. The wearing bush enhanced with PTFE , its temperature reached 200 degrees above, there is good resistance to acid and alkali.
6. Has a good performance of reducing torsion, the wear resistance decreased by 20%, the torque decreased by about 30%.
7. Wear prevention sleeve has a longer service life, the service life of more than 500 hours.
8. The structure is simple, and is convenient for the field installation and use. The product can be directly fixed on the drill pipe
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All Metal Down Hole Hydraulic Oscillator Series
1.Introduction of Hydraulic Oscillator
A hydraulic oscillator is used to solve the bottom hole pressure, Improve drilling and pressure transmission. Particularly suitable for use in horizontal wells, large displacement wells. It can be used at the same time as MWD, down hole power drill and any drill bit.
Our hydraulic oscillator includes power components, are all metal material, tool body parts without rubber components, widely used in various drilling conditions, in conventional tools to work well at high temperature, oil base mud, saline formations such as conditions can be completely normal use.
2. Introduction of Structure
3. Specification
Specification6-7/8" OD
Applicable Displacement20 l/min   -   37 l/min
Total Length3.2m
Working Frequency11-13 Hz@600-800
MAX Operating TemperatureBasically no limit
Connecting ThreadNC50
Shock Force32-42KN
Amplitude3-15mm
Note: the operating frequency and vibration amplitude can be adjusted according to the customer's needs.
4. Performance comparison
Main points of contrastAll Metal Down Hole Hydraulic Oscillator mental faceOthers Others
Power sourceAll metal unitScrew
Tool Length3.2m   >7m
Rubber componentsnoHave
Special conditions such as high temperature and high pressure oilBasically no limitEffect life is affected or even can not be used
pressure droplow   (About 1 - 1.5 pcs Mpa)High    (3-4Mpa)
5.Feature
A) All metal material
B) The length is 3.2m, others are over 7m. Our tools are easy to wellhead loading and unloading, testing, transportation, etc.
C) No rubber and other parts easy to fall off
D) In high temperature and high pressure, salt water base wells, our tools have obvious advantages.
E) Reduction of working pressure.
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Casing, Tubing Stabilizer Series
Rigid Casing Stabilizer Series

Feature:
1. in the process of pipe string into the well, the block is more easy to pass through the spiral groove.
2. In the outer ring air pipe, a swirl flow is generated, change the flow, improve the displacement efficiency when the cement slurry passes through the spiral groove of the correction device.
3. The drum shape and anti dropping wheel design, greatly reducing the contact area of the pipe string and borehole wall, thereby reducing the friction force between the wellbore and and enhanced by the safety coefficient of complex wells.
4. Site installation and use is convenient.

Roller type casing (tubing) stabilizer series
Feature
1. in the process of pipe string into the well, the block is more easy to pass through the spiral groove.
2. In the outer ring air pipe, a swirl flow is generated, change the flow, improve the displacement efficiency when the cement slurry passes through the spiral groove of the correction device.
3. The drum shape and anti dropping wheel design, greatly reducing the contact area of the pipe string and borehole wall, thereby reducing the friction force between the wellbore and and enhanced by the safety coefficient of complex wells.
4. The drum is studded with three rows of anti drop roller, to ensure the effective contact of the wheel and the wall, sliding friction transition into the rolling friction, thereby greatly reducing the casing of the decentralization of resistance, enhanced by the safety coefficient of complex wells.
5. In the roller body processing anti falling in step, ensure the roller in the roller shaft fracture cannot emerge from the roller body, improves the safety tool.
6. Site installation and use is convenient.


Specification for non - roller type stabilizer for casing
Standard notesWorking ODCasing ODLength
CTS140~150/127140 ~150≤127130~150
CTS190~210/178190~210139.7~177.8160-300
CTS290~310/245290~310193.7~244.5180-350
CTS410~440/340410~440273.1~339.7300-500
CTS580~650/508580~650346.1~508.0350-600
Note: other models can be customized according to user's requirements.

Specification for roller type stabilizer for casing
Standard notesWorking ODCasing ODLength
CTS140~150/127-G140 ~150≤127130~150
CTS190~210/178-G190~210139.7~177.8160~300
CTS290~310/245-G290~310193.7~244.5200~350
CTS410~440/340-G410~440273.1~339.7300~500
CTS580~650/508-G580~650346.1~508.0350~600
Note: other models can be customized according to user's requirements.

Specification for non - roller type stabilizer for tubing
Standard notesWorking ODTubing ODLength
ZRYF140~150/73140~150≤73130~150
ZRYF140~150/90140~15080~88.9130~150
Note: other models can be customized according to user's requirements.


Specification for roller type stabilizer for tubing
Standard notesWorking ODTubing ODLength
ZRYF140~150/73-G140 ~150≤73130~150
ZRYF140~150/90-G140~15080~88.9130-150
Note: other models can be customized according to user's requirements.



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Well Completion Oscillation Screw
Composition:
Coiled tubing drilling


Specification
2-7/8 in
Specification2-7/8" OD
Nominal OD73.0 mm
Overall Length (including screw motor)3.14 m
Working Frequency23 Hz@401 L/m
Maximum working temperature160 °C
Connecting thread2-3/8” PAC
Allowable lift566.8 kN
Maximum working torque4.7 kN·m
Note: the operating frequency and vibration amplitude can be adjusted according to the customer's needs.





Suitable Size

Total length



Applicable Tubing Size in. (mm)
1-3/4 (44.450)
2.0 (50.800)
2-3/8(60.325)
2-7/8(73.025)


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Hydraulic Impactor series
1. Structure
Form of Upper and lower joints, power parts, screw lifting mechanism, impact actuator.
Structure diagram
2. Feature

1. Can provide continuous high frequency impact, improve the efficiency of rock breaking.
2. It is conducive to the elimination of stick slip phenomenon.
3. It can avoid or reduce the generation of cable-system drill and drilling jumping, and prolong the service life of the drill bit.
4. To meet the underground high temperature, high pressure, tension, compression, torsion and other complex conditions, to ensure the safety of underground.
5. Tool has no additional requirements for drilling operation parameters. If the tool stops working, it can still be in normal drilling.
TypeWell Hole Size(mm)Impactor OD (mm)Tool Length (m)
Connecting Thread NumberMud Displacement 
(L/S)
 
Tool Pressure Drop 
(Mpa)
 
Impact Force 
(t)
Impact frequency (times/min)
VerticalRadial
YI185215.91852.8~2.94 1/2REG20~301.5~2.50.9~2.20.3~0.6600~1000
YI203241.32032.8~2.96 5/8REG22~351.6~2.70.9~2.50.3-0.6600~1000
YI240311.12403.1~3.26 5/8REG50~602.0~3.02.0~3.50.3~0.6600~1000


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  Hydraulic rotary casing guide shoe
Tool internal self rotating component, convert fluid energy to traction torque.
Cone eccentricity top, through the rotation of the steps, trim the wall.
The auxiliary roller can reduce the resistance of the guide shoe.

Feature:
1. Guide shoe self rotation design. When the borehole bench local blockage in the process of casing guide shoe head can automatically change the direction of the guide bushing well in.
2. Guide shoe can self rotation and   open the pump using the drilling fluid to drive the free rotation of the shoe.
3. Because the fluid drive guide the shoe free rotation, in the process of casing encountered mud cake buildup, sediment deposition in borehole, partial shrinkage diameter blockage can start pump to circulate the drilling fluid to make the guide shoe rotating to scraped the mud cake, sediment guide casing successfully.
4. Suitable for vertical well, directional well, high angle deviated well, horizontal well.
5. Flow channel area can meet the needs of cementing cement construction.
6. The material is 40CrMnMo, with good mechanical properties, meets the requirement of anti shock in the process of casing pipe.
7. The middle of the shoe is inlaid with a roller, can reduce the casing resistance.

Typeshoe body OD (mm)Working OD(including rolling wheel)(mm)Tool Length (mm)Circulating aperture(mm)Casing Size(mm)Connection thread
HRS131/11412713160040114.34-1/2"Casing connection buckle
HRS146/127142146620501275" Casing connection buckle
HRS166/14016016664055139.75-1/2" Casing connection buckle
HRS200/17819520070070177.87" Casing connection buckle
HRS276/24427027680080244.59-5/8" Casing connection buckle


Kingwell Oilfield Machinery
Mr. Jerry Wang    CEO
Mobile / whatsApp: +86 18729329559
Email: kingwell@kingwelloilfield.com

Tel: 86+029-8860 1839
Fax: 86+029-8860 1839
Skype: xakingwell
Address: No.18 Fenghui South Road, Hi- tech Zone, Xi'an, China.
Ms.Yu
Int'l Sales Manager  PIC of Int'l Trade dept.
Cellphone/whatsApp: +86 13772083276
Email: Marketing@kingwelloilfield.com

Catherine Li
Marketing Manager
Cellphone/whatsApp: 0086 13379186892
Email: salesdst@kingwelloilfield.com
Linda
Business Development Manager
Mobile / whatsApp: +86 13379187081
Email: linda@kingwelloilfield.com

Grace  
in Charge of Perforating Material Dept.
Email: drilling@kingwelloilfield.com
Office Tel: 0086 88601839