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Information about Well Repair Equipment

Views: 10     Author: Site Editor     Publish Time: 2023-09-02      Origin: Site

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Model ZJ10 ZJ15 ZJ20 ZJ30
Rig Configuration Self-Propelled
Drilling Depth (114mm Drill Pipe) 1000m 1500m 2000m 3000m
Workover Depth (88.9mm Drill Pipe) 3200m 4500m 5500m 6500m
Max Hook Load 900kN 1125kN 1580kN 1800kN
Max Hook Speed 0.2~1.4 m/s


Model ZJ10  ZJ15  ZJ20 ZJ30
Derrick Height/m 29 32 35 37
Engine Model CAT3406B CAT3408B DITA CAT3412B DITA CAT3408B DITA
Engine Power/KW 269 354 485 354×2
Hydraulic Transmission Model CLBT5961 CLBT5961 CLBT6061 CLBT5061×2
Transmission Type Hydraulic + Mechanical
Maximum Hoisting Line Count 4×3 5×4 5×4 5×4
Main Hoisting Rope Diameter/mn φ26 φ26 φ29 φ32
Crown Block Model YG90 YG110 YG135/YG160 YG180
Swivel Model SL110 SL130 SL13S/SL160 SL160/SL225
Rotary Table Model ZP175 ZP175 ZP175 ZP205
Chassis Model/Drive Type XD40/8×6 XD50/10×8B XD60/12×8 XD70/14×8
Approach Angle/Departure Angle 25°/16° 25°/16.3° 30°/18° 30°/18°
Minimum Ground Clearance/mm 311 311 311 311
Maximum Gradient 30% 26% 26% 26%
Minimum Turning Radius/m 14 15 19.2 20.5
Transport Dimensions/m "16.7x2.8×4.3" "18.8x2.8×4.3" "20.5x2.85×4.45" "22.5x2.9×4.45"
Main Unit Weight/kg 42000 47000 55000 60000
Accessory Weight/kg About 15000 About 20000 About 25000 About 30000
Mud Tank Effective Volume/m³ Not less than 80 Not less than 80 Not less than 160 Not less than 165


Drilling Rig Model ZJ40/2250DZ(DB) ZJ50/3150DZ(DB) ZJ70/4500(DZ) ZJ90/5850DZ
Nominal Drilling Depth/m (114mm Drill Pipe) 2500~4000 3500~5000 4500~7000 6000~9000
Max Hook Load/kN 2250 3150 4500 5850
Maximum Lines in Travelling System 10 12 12 14
Drilling Wire Rope Diameter (mm / in) 32(1¼) 35(13/8) 38(1½) 42(15/8)
Diameter of Travelling System Pulleys/mm 1120 1270 1524 1524
Swivel Center Pipe Diameter/mm 75 75 75 75
Drawworks Rated Power/kW 735 1100 1470 2210
Drawworks Speeds 4 4 4 4
Rotary Table Opening Diameter (mm / in) 520.7(20½) 698.5(27½) 952.5(37½) 1257.3(49½)
Rotary Table Speeds 2 2 2 2
Mud Pump Single Unit Power (kW / hp) 735(1000) 960(1300) 1180(1600) 1470(2000)
Derrick Working Height/m 43 45 45 45
Drilling Platform Height/m 7.5 9/10.5 9/10.5 10.5/12
Drilling Platform Clear Height/m 6.26 7.617/8.92 7.42/8.92 8.7/10
Mud Tank Effective Volume/m³ (excluding reserve tanks) Not less than 180 Not less than 240 Not less than 360 Not less than 480

In the oil and gas industry, effective well repair equipment is essential for maintaining the smooth functioning of drilling operations. This article aims to provide a comprehensive overview of three crucial components of well repair equipment:  (Well Repair Equipment),  (Drilling Rigs), and  (Mud Pumps). Each component plays a significant role in ensuring the efficiency and safety of drilling processes. Read on to explore the functions, features, and importance of these essential tools.

Section 1: Understanding Well Repair Equipment

Well repair equipment, also known as well servicing equipment, is specifically designed to enhance the safety and productivity of well maintenance. It encompasses various tools and machinery required to inspect, repair, and maintain oil and gas wells. These equipment are often categorized into two types: workover rigs and well service rigs. While workover rigs are primarily used for major repairs, completion operations, and well interventions, well service rigs are employed for routine maintenance and minor repairs.

Subheading 1.1: Workover Rigs

Workover rigs are heavy-duty machines utilized for drilling intervention activities. They consist of a derrick, drawworks, and rotating equipment that enable the pulling and replacement of completion strings.


When a well needs substantial repairs or requires maintenance after drilling operations, workover rigs are deployed. These rigs can perform complex tasks such as casing repairs, well cleanouts, and artificial lift installations.


Subheading 1.2: Well Service Rigs 

Well service rigs are versatile equipment used for routine maintenance, interventions, and minor repairs. They are relatively compact and mobile, allowing easy transportation between well sites. Well service rigs are crucial for activities like pump replacements, downhole instrument installations, and routine well servicing tasks, ensuring the continuous operation of wells.


Section 2: Exploring Drilling Rigs 

Drilling rigs are indispensable for the initial drilling of wells, facilitating the extraction of oil and gas reserves from underground reservoirs. These rigs are equipped with advanced technology and powerful machinery to penetrate various terrains, ensuring precise drilling operations.


Subheading 2.1: Rotary Drilling Rigs

Rotary drilling rigs employ a rotating motion to drill boreholes into the ground. They consist of a mast, top drive, drill pipe, and a rotary table. These rigs are capable of drilling through various formations, such as sedimentary rocks, hard formations, and shale. Their flexibility and efficiency make them widely used in the oil and gas industry.


Subheading 2.2: Directional Drilling Rigs 

Directional drilling rigs, also known as slant rigs or deviated drilling rigs, enable drilling at non-vertical angles. They are employed when drilling needs to bypass obstacles or reach specific targets located away from vertical positions. Directional drilling rigs utilize advanced guidance systems and specialized tools, allowing precise well placement and maximizing production from reservoirs.


Section 3: Understanding Mud Pumps 

Mud pumps play a crucial role in drilling operations by circulating drilling fluids, commonly known as drilling muds. These fluids perform various essential functions, including cooling the drill bit, lubricating the drill string, removing drill cuttings, and maintaining wellbore stability.


Subheading 3.1: Centrifugal Mud Pumps

Centrifugal mud pumps utilize centrifugal force to create pressure and circulate drilling fluids. These pumps are crucial for continuous mud circulation, preventing well collapse and facilitating efficient drilling. They offer various advantages such as simple maintenance, high flow rates, and compatibility with different drilling conditions.


Subheading 3.2: Positive Displacement Mud Pumps

Positive displacement mud pumps use reciprocating motion to displace drilling fluids. They are capable of maintaining a consistent flow rate, ideal for drilling operations requiring precise control over mud circulation. These pumps are oftentimes used for complex drilling projects and in scenarios where high pressures are required.


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