LAND RIG BU 5000/320 BM(CH)

Functions

Drilling rig BU 5000/320 BM(Ch) with variable-frequency AC drive, power supply by 6.3 kW network or diesel-electric station, is designed for exploration drilling of up to 5000 m deep wells.

Drilling rig may operate in macroclimatic regions with moderate climate, 1 category as per GOST 15150-69 (-45 C…+40 C) at oil fields with max 6% hydrogen sulphide. Maximum operating temperatures (-50 C… +45 C).

Principal configuration of the rig conforms to the minimum mounting of the rig package at the site.

Main advantages:

Land rig provides:

Development of oil and gas fields with up to 5000 m deep producing formations Increase of labor productivity, minimization of difficulties while wells drilling due to the use of adjustable AC drives

Cutting down terms and man-hours for primary and following rig-ups due to modular configuration of the rig, increased factory readiness of blocks and modules, fewer units to be mounted and transported

Minimization of the negative influence of the rig on the environment due to ecologically clean drilling provided by liquidation of storehouses and drilling mud disposal, prevention of drilling mud and liquids leaks under the drilling rig

Improvement of comfort labor conditions for the drilling crew due to availability of houses with heated shelters and floors, system of houses and working places heating with closed circulation

Drilling rig module

Drilling rig module with auxiliary equipment is designed for drilling tools hoisting and lowering, casings lowering, automated bit feed to the well bottom, prevention of accidents while wells drilling, hoisting and lowering of the derrick.

Drilling rig module consists of: Drawworks LBU-1500 AS-2

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? Module frames with pipelines ? Stabilizer

? Drawworks drive

? Emergency (auxiliary) drive

Drawworks LBU-1500 AS-2 is designed for drilling rigs with drilling line of 35 mm diameter, 320t lifting capacity with 5x6 block-and-tackle system. The drawworks is equipped with AC drive

Main features of the drawworks: ? Multifunctional drive

? Gear transmission ? Disc brakes

? Drum thread and ledges protection ? Contactless sealing of shafts ? Remote control

? Hook block lifting limiter ? Lifting capacity limiter

Derrick

Derrick M46-320-OG-R is designed for installation of block-and-tackle system, platform for manual positioning of stalks, auxiliary equipment, positioning of drill strings and drill collars, turbodrill, emergency derrick escape device, roller to suspend logging cable and rotary tongs, hydraulic tong and others.

Derrick is designed for mounting of top drive system. The derrick is designed for operation in moderate climate conditions, category 1 as per GOST 15150-69, in wind regions 1…5 as per SNiP 2.01.07-85.

The derrick has open front edge and is made of open profile.

Main components of the derrick – sections – are made of flat welded frames. Back edge is made of beams of various cross-sections depending on the length and loads. Main elements are made of low-alloyed steel. Elements are pin-jointed.

The derrick is equipped with step ladders with tunnel fencing (safety rails) and gangways, installed with 6 m high interval which provides safe ascent. The derrick has site to operate drill hose plug with manifold stands, mechanism against dropping of drill pipes, installed at the setback.

The derrick holds electric equipment of lighting system, blocks for suspension of rotary tongs, blocks for auxiliary drawworks cable, derrick emergency escape device and other equipment.

Derrick structure provides mounting of top drive system.

The manufacturer ships the partially disassembled derrick with units having overall dimensions required for railway transportation.

Main elements of the derrick to be transported include nine all-welded sections (with cabling), leg, girths and angle braces of the back edge, crown block (frame with mounted wheels and railings), gin poles disassembled into assembly units, platform of three main transport units, ladders, sites being assembly units.

A-shaped frame of the hoisting device consists of three main assembly transport units: two stands with braces and installed gins and beams with a running roller.

A-shaped frame is assembled and mounted before derrick rig-up.

Rig-up of derrick, platform, sites and device to prevent drill pipes dropping is performed in horizontal position with hoisting to vertical position by the drawworks.

Gins and cables of the device to hoist derrick are mounted on the outer side of the mast which simplifies the polyspast equipment and makes it possible not to occupy the space inside the derrick.

Centering and leveling of the derrick is performed in the course of drilling using hydraulic jacks.

The derrick is fastened to the basement without bracing.

The assembled derrick is transported in parts by the general-purpose transport.

Basement

The basement of derrick and drawworks block is designed for installation of derrick with open front edge, framing with shelters, setbacks, lifting units,

auxiliary drawworks and other equipment. In the course of drilling the equipment transfers loads to the basement. Basement of derrick and drawworks unit consists of two load frames (left and right longerons) and folding parallelogram drilling floor); derrick and derrick lifting mechanism, are mounted at these frames. Folding drilling floor consists of three units: left and right folding parts of the basement and rotary module. In the course of rig-up, folding parts of the basement are mounted at the ground and rotary module is fixed between them. The working floor is lifted by block-and-tackle system and a special sling. Folding parts of the basement may be additionally equipped with dollies for their transportation by means of truck tractor and to avoid additional crane operations.

Structure of derrick and drawworks block basement has a bore pit, with bushings for manual slips, for setbacks assembly in the course of drilling by means of a drilling tong AKB-4 followed by extension of a drill string with a setback, a tray, which provides collection and discharge of drilling mud to the well head. To install and move BOP stack under the rotary site, two monorails with lifting pulley blocks are provided.

Drilling pump

Single-acting triplex drill pump UNBT-1180L1 is designed to feed drilling mud in the course of deep oil and gas wells drilling.

Pressure level in the focus points of hydraulic box cylinders is reduced up to the safe level by reducing internal diameters of the cylinders. Surface of the focus points is processed up to Ra1.6 roughness to reduce pressure level. Forged parts of alloyed steel are used as hydraulic boxes.

The liner is fixed with the clam50p. Such structure is designed to provide tight contact of the liner end and hydraulic box face.

The pump includes a special electric pump unit to lubricate the bearings and components of slide-crank mechanism and transmission shaft. Moreover, there is gravity lubrication supply system of the pump reducing part, which provides gravity oil supply to the friction points from oil sumps through oil lines and oil mist, oil spraying and dipping into oil.

Wheel gears and gears of the transmission shaft are heat treated.

High pressure pneumatic compensator of the welded-forged structure provides unevenness of output pressure of max. 5% with 35 MPa working pressure.

Drilling pump

Single-acting triplex drill pump UNBT-1180L1 is designed to feed drilling mud in the course of deep oil and gas wells drilling.

Pressure level in the focus points of hydraulic box cylinders is reduced up to the safe level by reducing internal diameters of the cylinders. Surface of the focus points is processed up to Ra1.6 roughness to reduce pressure level. Forged parts of alloyed steel are used as hydraulic boxes.

The liner is fixed with the clamp. Such structure is designed to provide tight contact of the liner end and hydraulic box face.

The pump includes a special electric pump unit to lubricate the bearings and components of slide-crank mechanism and transmission shaft. Moreover, there is gravity lubrication supply system of the pump reducing part, which provides gravity oil supply to the friction points from oil sumps through oil lines and oil mist, oil spraying and dipping into oil.

Wheel gears and gears of the transmission shaft are heat treated.

High pressure pneumatic compensator of the welded-forged structure provides unevenness of output pressure of max. 5% with 35 MPa working pressure.

DRILLING