Skid-Mounted Drilling Rig

Key Features

Core Competitive Advantages

Ultra-Fast Deployment & High Relocation Flexibility

Adopting a modular skid design, the entire rig is split into 4~6 independent functional skid blocks: power unit skid, derrick & hoisting skid, rotary & drill floor skid, and mud circulation system skid. Each skid block is designed to fit standard 40ft flatbed trailers / standard shipping containers for transport, with no disassembly required during site relocation. On-site installation and commissioning can be completed within 24~48 hours, 70% faster than traditional fixed drilling rigs, perfectly suited for scattered well sites in shale plays, remote exploration areas and regions with limited infrastructure.

Flexible Configuration for Diverse Well Conditions

Full tonnage and performance options are available to match different well depths, formations and operation needs:

Rated hook load range: 30T / 50T / 80T / 120T / 150T, applicable for well depths from 300m to 3000m

Optional rotary table or 375HP~2000HP AC top drive, with torque range of 15kN·m ~ 200kN·m, adaptable to soft formations, hard rock, shale, sandstone and other complex strata

Optional triplex/duplex mud pump with max working pressure of 21MPa ~ 70MPa, supporting conventional drilling, underbalanced drilling and coil tubing operations

Optional power systems: diesel engine (compatible with local low-quality fuel specifications) or electric drive (for areas with stable grid supply to reduce operating costs)

Full Compliance with Global Standards & Regional Requirements

All core components meet API 8C (Specification for Drilling and Well Servicing Equipment) and API 7K (Drilling and Well Servicing Hoisting Equipment) standards, with ISO 9001 quality management system certification. Customized compliance configurations are available for target markets:

North America: EPA Tier 4 emission-compliant engines, OSHA-compliant safety guards, high-pressure BOP stacks suitable for high-pressure shale formations, widely used in Permian Basin, Eagle Ford and Montney shale plays

CIS/Russia: EAC (TR CU) certification, -40℃ low-temperature cold-start kit, heavy-duty chassis suitable for swamp, tundra and rugged mountain terrain, proven operation in West Siberian and Volga-Ural oilfields

Middle East: GSO/SASO certification, high-temperature resistant components (operable up to +60℃), anti-sand sealing design, explosion-proof and H₂S-resistant configuration for sour gas fields, adapted for Ghawar, Safaniya and West Qurna onshore oilfields

South Asia: BIS certification, cost-effective configuration with localized spare parts support, suitable for Rajasthan and Chhattisgarh onshore oilfield exploration operations.

Low Lifecycle Cost & Easy Maintenance

Modular design simplifies fault diagnosis and maintenance, with wearing parts compatible with global mainstream drilling rig brands. The rig has a designed service life of 15+ years under standard operating conditions, with 30% lower operating costs than traditional fixed rigs of the same tonnage, thanks to optional automated drill feed systems that reduce manual labor requirements. Global spare parts warehouses in Houston, Dubai and Moscow ensure spare parts delivery within 3~7 days worldwide.

Full After-Sales Support

100% factory load test and pressure test before shipment, with third-party inspection (SGS/BV) available upon request

Free on-site installation guidance, commissioning and 3~5 days of operator training (English/Russian/Arabic/Spanish materials available)

12-month / 2000 operating hours warranty for the whole unit, 24-month warranty for core components (engine, hydraulic pump, hoisting system)

7*24 hour remote technical support, 2-hour response for fault diagnosis; local service teams available for core markets with on-site support within 72 hours for urgent failures

Dedicated spare parts supply plan for each client to ensure long-term stable operation

Technical Specifications

Product Structure

Structural Breakdown of Skid-Mounted Modular Drilling Rig Export-Grade, Tailored for Global Oilfield & Exploration Markets

Designed for fast-deployment onshore exploration drilling, appraisal well drilling, auxiliary development drilling, geothermal well drilling and coalbed methane CBM well operations, this modular skid drilling rig adopts a fully skid-block standardized design, requires no permanent foundation, supports whole-unit rapid relocation between scattered well sites, and is fully optimized for operation in remote, harsh environments across North America, CIS, Middle East, South Asia and Africa. All core components comply with API 8C/7K global oilfield equipment standards, with customized kits for regional regulatory, environmental and operational requirements.

1. Skid Base & Modular Transport System

The entire rig is split into 4~6 independent standardized skid blocks as per functional division: power unit skid, derrick & hoisting skid, rotary & drill floor skid, mud circulation skid (mud pump skid + solids control skid + mud tank skid), and control skid. All skid blocks are designed to fit standard 40ft flatbed trailers or 40ft shipping containers for transport, reducing logistics costs by 30% compared to traditional disassembled drilling rigs.

Each skid base is welded from high-strength structural steel profiles with hot-dip galvanized anti-corrosion coating rated for 20-year outdoor service life, integrated with lifting lugs, forklift slots and standardized interface connectors hydraulic, electrical, high-pressure pipeline for fast on-site inter-block connection.

4-point 6-point for high-tonnage models telescopic hydraulic outriggers with independent leveling control are equipped for on-site stabilization, with integrated ground pressure monitoring for soft terrain, swamp or desert operation scenarios. Low-profile skid design is available for areas with height restrictions such as mining sites and urban engineering projects.

2. Power & Transmission System

Two optional power modes to match local infrastructure and cost requirements:

Diesel power mode: High-reliability heavy-duty diesel engine rated power 200HP~800HP, configurable to meet regional emission standards: EPA Tier 4 for North America, Euro V for CIS/EU markets, GSO emission standards for Middle East, with optional low-sulfur fuel adaptable engines for markets with poor fuel quality.

Electric drive mode: For areas with stable grid supply, with optional grid power or diesel generator backup, reducing operating costs by 40% compared to diesel-only models.

The power unit is integrated with a transfer case and PTO power take-off to drive core operating equipment: drawworks, rotary drive, mud pump, and dedicated high-pressure axial piston hydraulic power unit (HPU, max power 300kW) for auxiliary actuators including derrick erection, hydraulic outriggers, pipe handling tools and well control equipment.

Optional -40℃ low-temperature cold-start kit engine and hydraulic oil preheating system is available for arctic and high-latitude CIS operation scenarios, supporting normal start-up at -40℃ ambient temperature.

3. Derrick & Hoisting System Core Working Component

Telescopic prismatic derrick made of high-strength low-alloy structural steel, with configurable heights of 15m / 18m / 21m / 24m, rated hook load matching rig tonnage 30T~150T, with anti-corrosion coating rated for 20-year service life. Integrated stress sensors and tilt monitoring system provide real-time derrick load monitoring, with automatic alarm and emergency braking when overload or abnormal tilt is detected.

Hoisting assembly: Dual-drum optional single-drum for small-tonnage models drawworks with API-certified crown block, traveling block and hook, with anti-drop safety lock for hook and real-time wire rope tension monitoring to prevent wire rope breakage. Derrick erection system supports fully automatic hydraulic or mechanical erection, with full derrick deployment completed within 15~30 minutes for fast site setup.

Optional pipe handling catwalk and automatic pipe rack system to reduce manual pipe tripping operation intensity by 60%+.

4. Rotary System

Two optional rotary modes:

Rotary table mode: Hydraulic or variable-frequency electric driven rotary table, rated torque 15kN·m~200kN·m, with continuously variable speed control from 0~300rpm, suitable for conventional drilling and workover operations.

Top drive mode: 375HP~2000HP AC variable-frequency top drive, with rated torque up to 200kN·m and maximum speed 300rpm, replacing traditional kelly drive to improve pipe tripping efficiency by 60%+, suitable for high-efficiency drilling and complex formation operations.

High-pressure rotating swivel with double-seal structure, compatible with standard kelly assembly and coil tubing operations. Drill floor is equipped with anti-slip grating, fixed guardrails and standardized well center positioning marks, with optional hydraulic power tong, slips and elevators for auxiliary well site operations.

5. Drilling Fluid Circulation System Optional for pure workover configurations

Modular mud pump skid: Configurable duplex/triplex reciprocating mud pump, rated power 300HP~1600HP, maximum working pressure 21MPa~70MPa, with integrated air cooling system and automatic control system.

Mud circulation pipeline: Standardized high-pressure quick-connect manifold, standpipe and flow line, fully compatible with client-provided or self-matched BOP stack and wellhead assembly.

Solids control skid optional: Integrated with shale shaker, desander, desilter, mud centrifuge and mixing system, with multiple shale shaker options to adapt to different formation cuttings sizes.

Mud tank skid: Configurable 1~4 mud tanks with volume range of 10m³~100m³, equipped with agitators, mud guns and level monitoring sensors for normal mud performance maintenance.

6. Well Control & Operation Control System

BOP stack interface: Pre-installed standardized BOP mounting frame and hydraulic actuation interface, compatible with client-provided annular BOP, pipe ram BOP and blind ram BOP rated working pressure 14MPa~70MPa. Optional well control console with integrated BOP control unit for local and remote BOP operation.

Central control skid: Integrated PLC control system with 10/15-inch HMI touchscreen, supporting dual-mode control: hydraulic lever control for simple operations and electric automatic control for complex operations. The system displays real-time parameters including hook load, derrick stress, engine/HPU status, mud pressure/flow, wellhead pressure and rotary speed, with multi-language interface English/Russian/Arabic/Spanish/Chinese support.

Full safety interlock system: Overload protection, derrick tilt alarm, emergency stop button, drawworks anti-collision sensor and H₂S alarm (optional for sour gas field operation scenarios), with optional intrinsic safety control system for hazardous environments.

7. Supporting Facilities & Auxiliary Systems

Insulated, air-conditioned driller's cabin with anti-vibration design, supporting normal operation in ambient temperature range of -40℃~+60℃, with integrated communication equipment, emergency rescue equipment storage and fire extinguisher compartments.

Explosion-proof LED lighting system with 24-hour backup power supply, supporting continuous night operation.

Optional auxiliary equipment: automatic catwalk, power cathead, wellhead clamp, portable cementing pump and coil tubing injector, to expand operation scope.

Compatible Brands

HH, BOMCO, RG, SJ, DFXK

Applications

Core Application Industries

Upstream Oil & Gas Exploration & Development Industry (Primary Application)

Covers the full operation cycle of onshore oil and gas field development:

Exploratory drilling, appraisal well drilling and auxiliary development drilling for new oil/gas reserve discovery, widely used in scattered shale well sites, remote exploration blocks and mature oilfield infill drilling projects

Workover operations for existing production wells: tubing running/removal, pump replacement, side-tracking, well stimulation support and emergency well control incident response

Regional proven performance: Over 200 units are in stable operation across core markets: Permian Basin/Eagle Ford (USA) shale plays, Ghawar/Safaniya (Saudi Arabia) onshore super giant oilfields, West Siberian/Volga-Ural (Russia) oilfields, Rajasthan (India) onshore oilfields, adapted to high-pressure shale formations, high-temperature desert environments and -40℃ arctic operating conditions respectively.

Unconventional Oil & Gas Development Industry

Specially optimized for development scenarios with scattered well sites and frequent relocation requirements:

Coalbed methane (CBM), shale gas and tight oil exploration and development well drilling, with fast on-site installation (24~48 hours) matching the high-frequency relocation needs of unconventional gas field clusters

CBM vertical well and horizontal well drilling, with optional coil tubing operation configuration to improve production stimulation efficiency

Regional adaptation: Widely used in North American shale gas/oil fields, China Ordos CBM fields and Australian coalbed methane fields, with cost-effective configurations to match the high-frequency relocation operation model of unconventional fields.

Geothermal Energy Development Industry

Supports full-cycle operation of geothermal well construction and maintenance:

Shallow and medium-depth geothermal well drilling for district heating and geothermal power generation

Workover for geothermal production/injection wells: scaling removal, pump replacement, downhole tool retrieval and reinjection well maintenance

Scene adaptation: Specially configured with corrosion-resistant components for geothermal brine with high salinity and H₂S content, suitable for geothermal-rich regions including Iceland, Turkey, East African Rift and western United States.

FAQ

Technical Specification & Customization Queries

Q1: Can the skid rig be customized to match our specific well conditions and operation requirements?

Yes, full customization is supported. You can select tonnage 30T~150T, derrick height, power system diesel/electric drive, control mode, auxiliary accessories and environmental adaptation kits based on your well depth 300m~3000m, formation type, site terrain and operation needs. We provide free customized technical proposals and cost estimates within 3 working days upon receipt of your detailed operation parameters.

Q2: What is the difference between your skid rig and truck-mounted/fixed drilling rigs? Which is more suitable for our scattered well sites?

Our skid rig features a fully modular skid-block design, requires no permanent foundation, and can be installed and commissioned on-site within 24~48 hours. It is 70% faster to relocate than traditional fixed rigs, and 30% lower in logistics cost than truck-mounted rigs for remote areas with poor road conditions. It is the optimum choice for scattered well sites in shale plays, remote exploration blocks and areas with limited infrastructure. We can provide a full cost-benefit analysis comparison to help you make the decision.

Q3: Can the rig support both drilling and workover operations? Do I need to purchase additional accessories for function conversion?

All standard models are dual-purpose for drilling and workover, with full sets of workover tools hydraulic power tong, slips, elevators, well control interfaces included in the basic configuration. To add drilling functions, you only need to select optional mud pumps, drill floor accessories, BOP stack and solids control equipment, no modification to the main unit is required.

Q4: What optional configurations are available for extreme operating environments?

We offer full environmental adaptation kits:

Low-temperature -40℃ operating kit: engine and hydraulic oil preheating system, low-temperature resistant rubber/steel components, for CIS and arctic operation scenarios

High-temperature +60℃ operating kit: upgraded engine radiator, high-temperature resistant hydraulic oil, anti-sand sealing design, for Middle East desert oilfields

H₂S/explosion-proof kit: intrinsic safety control system, explosion-proof electrical components, H₂S alarm, for sour gas field operation

Soft terrain kit: wide wetland tires, extended outrigger contact surface, ground pressure monitoring, for swamp, tidal flat and soft soil sites

Pricing & Commercial Terms

Q5: Is your quotation FOB or CIF? What does it include?

We support all major trade terms FOB, CIF, DAP, DDU, EXW as per your requirements. The standard FOB quotation includes: complete rig with standard configuration, factory acceptance test FAT fees, export customs declaration fees and standard spare parts kit. It does not include international freight, insurance, import tariffs, destination port charges and local transportation fees. We can provide a detailed quotation breakdown for your target trade term upon request.

Q6: What international certifications does your rig have? Can you provide documents for our country's import clearance?

All core components comply with API 8C Specification for Drilling and Well Servicing Equipment and API 7K Drilling and Well Servicing Hoisting Equipment standards, with ISO 9001 quality management system certification. 

How It Works

This skid-mounted modular drilling & workover rig integrates exploration drilling, development drilling, workover and auxiliary operation functions, featuring a fully modular skid-block design that requires no permanent foundation, supports rapid whole-unit relocation between scattered well sites, and is optimized for operation in remote, harsh environments with underdeveloped infrastructure across global target markets including North America, CIS, Middle East, South Asia and Africa. All core components comply with API 8C/7K global oilfield equipment standards, with customized environmental and functional adaptation kits for regional requirements.

1. Basic Power Transmission Logic

The rig supports two optional power modes to match local infrastructure conditions:

Diesel power mode: A high-reliability heavy-duty diesel engine rated power 200HP~800HP configured to meet regional emission standards EPA Tier 4 for North America, Euro V for CIS/EU markets, GSO standards for Middle East as required, with optional low-sulfur fuel adaptable versions for markets with poor fuel quality.

Electric drive mode: For areas with stable grid supply, with optional grid power or diesel generator backup to reduce operating costs by 40% compared to diesel-only models.

Power output is split into two paths: one is transmitted to core operating hosts including the drawworks, rotary table/top drive, and mud pump via the transmission system and power take-off PTO; the other drives the dedicated high-pressure hydraulic power unit HPU to supply power for auxiliary actuators including the derrick erection system, hydraulic outriggers, hydraulic power tongs, and well control equipment. All operations are uniformly coordinated by the PLC-based central control console with integrated sensors, which monitors operating parameters of all systems in real time, with multi-language interface support English/Russian/Arabic/Spanish.

2. Working Principle Under Drilling Conditions

Drilling operations are completed through the coordinated work of three core systems:

Rotary Drilling System: Power is transmitted to the rotary table or AC variable-frequency top drive to rotate the drill string composed of kelly, drill pipe, drill collar and drill bit. The drill bit directly crushes rock at the bottom of the well to advance well depth; the drill collar applies preset weight on bit WOB to the drill bit via its own weight to ensure drilling efficiency. The rotary system supports continuously variable speed control from 0~300rpm, with rated torque range of 15kN·m~200kN·m, adaptable to soft formations, hard rock, shale, sandstone and other complex strata.

Drilling Fluid Circulation System: The mud pump pressurizes the configured drilling fluid and sends it to the bottom of the well via the high-pressure manifold, swivel, and hollow drill string. The fluid sprays out from the drill bit nozzle at high speed, carries cuttings up along the wellbore annulus to the surface, and is purified by solids control equipment (shale shaker, desander, desilter, mud centrifuge) for reuse. At the same time, it functions to cool the drill bit, stabilize the wellbore, and prevent wellbore collapse.

Hoisting Control System: During drilling, the drawworks controls the lowering speed of the hook to accurately adjust the weight on bit. When the drill bit is worn and needs replacement, or when the drill string assembly needs adjustment due to complex formations, the drawworks lifts the entire drill string via the hoisting system composed of the crown block, traveling block, and hook to complete tripping operations, and can also perform casing running and other operations.

3. Working Principle Under Workover Conditions

Conventional workover operations do not require starting the rotary drilling and drilling fluid circulation systems, and are completed through the coordination of the hoisting system and wellhead operation system:

The drawworks drives the hook, elevator and other tools via the hoisting system to complete the lifting and lowering operations of downhole tubing, sucker rods, packers, electrical submersible pumps ESP and other wellbore string tools. The matched hydraulic power tongs, hydraulic slips, and automatic flip elevators can automatically complete the make-up and break-out of tubing strings, supporting routine workover tasks including pump replacement, water shutoff, pump inspection, fishing of downhole dropped tools, and wellhead troubleshooting. High-automation models also support one-key control of string lifting/lowering and automatic positioning, greatly reducing manual operation intensity at the wellhead.