Service Rig

Winch Derrick Mud Pump BOP Stack Driller Console

High-pressure bearing, low-temperature resistance, desert sand-proof, automatic control, well control safety technologies.

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Product Introduction

Service Rig, also commonly referred to as a Workover Rig, is a key piece of mechanical equipment specially designed for downhole operations in oil and gas fields. It is mainly used to perform maintenance, reconstruction, and restoration work on oil and gas wells that have been put into production.

Its typical applications include well repair, pump inspection, tubing replacement, paraffin removal, sand washing, plugging, sidetracking, and other downhole operations. By lifting, lowering, and operating downhole tools, the service rig ensures the normal production capacity of oil and gas wells, prolongs their service life, and improves overall oil and gas recovery efficiency.

Compared with large drilling rigs, workover rigs feature a more compact structure, higher mobility, lower operating cost, and stronger adaptability to complex well conditions. They are essential supporting equipment in the later stage of oilfield development and production maintenance.

Types and Characteristics of Equipment

Type

Vehicle-mounted：Self-propelled, suitable for frequent land relocation. Crawler-type：Strong off-road capability, for complex terrain. Trailer-mounted： Large load, stable, needs tractor. Desert-type：High temperature/sand-proof, for Middle East. Low-temperature： Resistant to -40℃~-45℃, for Russia. High-pressure：High pressure-bearing, for high-pressure wells. Automatic： Intelligent control, efficient and safe.

Features

Characteristics of Workover Rig / Service Rig

Compact structure and strong mobility

Simple operation and convenient maintenance

High working efficiency and low energy consumption

Strong hoisting capacity and large lifting load

Adaptable to various well conditions with wide application range

Safe, reliable and highly automated

Small size, light weight, suitable for field operation

Capable of various downhole operations such as workover, pump inspection, paraffin removal, sand washing, fishing, etc.

Lower cost and faster relocation compared with drilling rigs

Service Rig

A service rig is mobile oilfield machinery used for well maintenance and repair operations.

Service Rig

It supports tubing replacement, well cleaning, and production restoration for oil and gas wells.

Service Rig

Basic Principles and System Composition

Basic Working Principle

The engine provides power to drive the winch, realizing pipe string lifting through wire ropes, derrick and hook, and completing downhole operations with the circulation system.

Overall System Composition

Power System： Engine, gearbox. Hoisting System：Winch, derrick, hook. Circulation System： Mud pump, mud tank. Well Control System：BOP, manifolds. Control System： Driller console, hydraulic/electric control.

Basic Principles and System Composition

Site Preparation：Move equipment, inspect pipelines. Positioning：Align wellhead, erect derrick. Connection：Connect systems, pressure test. Downhole Operation：Pipe string lifting, well washing. Finishing：Restore wellhead, clean site.