currently “burintekh”, ltd is the major...

3

Currently “BURINTEKH”, Ltd is the major Russian developer and producer of world competitive tools for drilling and workover oil, gas and mining wells. “BURINTEKH”, Ltd continuously develops new types of tools which promote decreasing period of well construction. The catalogue represents information about new tool in our product line – casing accessories named “BITART”. This product is the result of team work of “BURINTEKH”, Ltd and “ART-OSNASTKA”, CJSC. This tool was developed for the purpose of decreasing time of drilling-out casing accessories without damage to PDC bits cutting structure.

4

BITART TYPE 120 AND MODIFICATIONS

Example of conventional designation at the time of order:BITART type XXX Box with float back valve for OK YYY thread ZZZwhere

OK – casingXXX – type (modification) of deviceYYY – casing diameterZZZ – type of tool joint

Designation:

It designed for fitting bottomhole assembly for the purpose of its

direction along the wellbore and protection from damage during

running and well casing.

Equipping:It is equipped with high strength guide plug made from plastic

material.

The shoe is resistant to high axial compression and bending loads

which allow using it in well construction with complex profile.

Guide plug has central circulating hole, three additional side circulation

holes and made in shoe body. The use of easy drilling plastic provides

quick drilling-out using PDC bit without damages to the bit.

5

Shoe with plastic guide plug BITART TYPE 120

Plastic guide plug Additional side circulation holes

6

Advantages (features):

• Design is fully adapted for drilling-out with PDC bit;

• The strength of plastic guide plug used in this design is 5 times higher than the strength of concrete guide plug conventionally used in making shoes;

• Rather than concrete plug the plastic one is not subject to destruction during transportation, mounting to casing or tripping-in hole;

• Compact size and small weight ease the transportation, storage and mounting the shoe to casing on the rig.

Shoe modification with plastic guide plug BITART

ADDITIONAL OPTIONSMODIFICATIONS

BITART TYPE 120 BITART TYPE 121

Base version + +

Side holes + -


7

Technical characteristics

Shoes with plastic guide plug BITART type 120 are produced for equipping

casings in diameter 114,3mm (4 ½ in) up to 323,85mm (12 ¾ in), can be

produced with the following types of tool joints: buttress thread under

GOST 632-80, buttress thread under API 5B and premium threads TMK

FMC, TMK GF, TMK PF, TMK PF ET, VAM TOP.

The base version of shoe – BITART type 120. At customer’s option BITART

type 120 can be equipped with additional options not included to the base

set and can be produced in modification BITART type 121.

Additional options:

“Without side holes” – absence of additional side circulation holes in shoe

body.

Technical characteristics of shoe with plastic guide plug BITART type 120, 121

PARAMETER VALUE

Casing OD, mm 101,60 114,30 146,05 168,28 177,80 244,48 323,85 339,70

Max. OD, mm 111,00 127,00 166,00 188,00 198,00 270,00 350,00 365,00

Min. ID after drilling-out, mm 88,00 100,00 130,00 149,00 159,00 226,00 304,00 318,00

Circulation hole diameter in guide plug, mm

60,00 80,00 100,00 100,00 110,00 160,00 180,00 200,00

Diameter of body circulation holes, mm*

20,00 20,00 22,00 22,00 22,00 26,00 26,00 26,00

Quantity of holes in body, ea.* 3

Max. operating temperature, °C 130,0

Type of tool joint OTTM tapered thread, OTTG sealing thread, buttress thread

Shoe length in modification:- OTTM tapered thread- OTTG sealing thread- Buttress thread

160,00

180,00

180,00

146,00

181,00

185,00

162,00

192,00

202,00

170,00

205,00

210,00

177,00

207,00

217,00

195,00

230,00

230,00

200,00

230,00

240,00

200,00

230,00

240,00

Weight, kg 2,5 3,0 6,0 9,0 12,0 20,0 30,0 40,0

*parameter for shoes BITART type 120

8


Designation:It designed for fitting bottomhole assembly for the purpose of its direction along the wellbore and protection from damage during running and well casing.

Equipping:It is equipped with high strength guide plug made from plastic material.The shoe is resistant to high axial compression and bending loads which allow using it in well construction with complex profile.Guide plug has central circulating hole, three additional side circulation holes and made in shoe body. The use of easy drilling plastic provides quick drilling-out using PDC bit without damages to the bit.

Example of conventional designation at the time of order:BITART type XXX Box with float back valve for OK YYY thread ZZZwhereOK – casingXXX – type (modification) of deviceYYY – casing diameterZZZ – type of tool joint

9

Shoe with eccentric plastic guide plug BITART TYPE 140

Eccentric plastic guide plug

10



• The eccentric plastic guide plug is resistant to high axial compression

and bending loads;

• During string rotation guide plug allows shoe bypassing obstacles

providing uninterrupted casing or liner RIH;

• Presence of additional option “side holes adjustable opening pressure”

allows casing RIH with high efficiency flushing through central holes in

guide plug with no risk of accidents connected with loss of circulation

due to shoe plugging.

Shoe modification with plastic guide plug BITART

ADDITIONAL OPTIONSMODIFICATIONS


Base version + +

Side holes - +


11

Technical characteristicsShoes with plastic guide plug BITART type 140 are produced for equipping casings in diameter 101,60mm (4 in) up to 339,70mm (13 3/8 in), can be produced with the following types of tool joints: buttress thread under GOST 632-80, buttress thread under API 5B and premium threads TMK FMC, TMK GF, TMK PF, TMK PF ET, VAM TOP.The base version of shoe – BITART type 140. At customer’s option BITART type 140 can be equipped with additional options not included to the base set and can be produced in modification BITART type 141.

Дополнительные опции:“Side holes adjustable opening pressure” – during RIH the circulation goes through central holes of shoe guide plug; the side holes are closed by bursting discs, which if necessary can be activated by means of creation over pressure in casing.

Technical characteristics of shoe with eccentric plastic guide plug BITART type 140, 141

PARAMETER VALUE

Casing OD, mm 101,60 114,30 146,05 168,28 177,80 244,48

Max. OD, mm 111,00 127,00 166,00 188,00 198,00 270,00

Min. ID after drilling-out, mm 88,00 100,00 130,00 149,00 159,00 226,00

Circulation hole diameter in guide plug, mm 22,00 27,00 30,00 30,00 35,00 35,00

Diameter of body circulation holes, mm* 22,00 22,00 22,00 22,00 26,00 26,00


Max. operating temperature, °C 3

Type of tool joint 5,0

Максимальная рабочая температура, °С 130,0

Тип присоединительной резьбы ОТТМ, ОТТГ, БТС


324,00

341,00

349,00

348,00

365,00

383,00

457,00

472,00

492,00

460,00

475,00

495,00

465,00

480,00

500,00

530,00

545,00

565,00

Weight, kg 12,0 15,0 20,0 25,0 30,0 40,0


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BITART TYPE 150

Designation:It designed for fitting bottomhole assembly for the purpose of its direction along the wellbore and protection from damage during well construction of difficult wells.

Equipping:It is equipped with eccentric plastic guide plug, which rotates during casing running. Rotating in the direction of least resistance the guide plug orients the shoe during running operations allowing bypassing obstacles facilitating casing RIH in difficult wellbore sections, sharp bends and curvatures.Eccentric plug has three circulation holes directed apart fro provision qualitative flushing. Body of the shoe has three additional side circulation holes.For the cases when during casing RIH the priority is circulation through central holes only there is shoe modification where side circulation holes closed by bursting discs. In case of central holes plugging the side holes are opened. This happens by means of creation over pressure in casing. When specific pressure value is reached discs are destroyed and circulation goes through created holes. Easy drilling polymer materials are used in producing shoes. This allows drilling-out using PDC bit without any damages to the bit.

EXAMPLE OF CONVENTIONAL DESIGNATION AT THE TIME OF ORDER:

BITART type XXX shoe with eccentric free rotating plastic guide plug for OK YYY thread ZZZwhereOK – casingXXX – type (modification) of deviceYYY – casing diameterZZZ – type of tool joint

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SHOE WITH ECCENTRIC FREE ROTATING

PLASTIC GUIDE PLUG BITART TYPE 150

Free rotating eccentric plastic guide plug

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• Rotating in the direction of least resistance the guide plug orients the

shoe during running operations allowing bypassing obstacles providing

uninterrupted casing or liner RIH;

• The eccentric plastic guide plug is resistant to high axial compression

and bending loads;

• Presence of additional option “side holes adjustable opening pressure”

allows casing RIH with high efficiency flushing through central holes in

guide plug with no risk of accidents connected with loss of circulation

due to shoe plugging.

Modifications of shoe with eccentric free rotating plastic guide plug BITART

ADDITIONAL OPTIONS MODIFICATIONS


Base version + +

Side holes adjustable opening pressure - +

BITART TYPE 150

15

Technical characteristicsShoes with eccentric free rotating plastic guide plug BITART type 150 are produced for equipping casings in diameter 101,60mm (4 in) up to 244,48mm (9 5/8 in), can be produced with the following types of tool joints: buttress thread under GOST 632-80, buttress thread under API 5B and premium threads TMK FMC, TMK GF, TMK PF, TMK PF ET, VAM TOP.The base version of shoe – BITART type 150. At customer’s option BITART type 150 can be equipped with additional options not included to the base set and can be produced in modification BITART type 151.

Additional options:“Side holes adjustable opening pressure” – during RIH the circulation goes through central holes of shoe guide plug; the side holes are closed by bursting discs, which if necessary can be activated by means of creation over pressure in casing.

Technical characteristics of shoe with eccentric free rotating plastic guide plug BITART type 150, 151

PARAMETER VALUE

Casing OD, mm 101,60 114,30 146,05 168,28 177,80 244,48

Max. OD, mm 111,00 127,00 166,00 188,00 198,00 270,00




Quantity of holes in guide plug, ea.* 3



Side holes opening pressure, MPa* 130,0

Type of tool joint ОТТМ, ОТТГ, БТС


344,00

361,00

369,00

368,00

385,00

403,00

477,00

492,00

512,00

480,00

495,00

515,00

485,00

500,00

520,00

550,00

565,00

585,00

Weight, kg 12,0 15,0 20,0 25,0 30,0 40,0


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BITART 210 AND MODIFICATIONS

It designed for fitting bottomhole assembly for the purpose of its direction

along the wellbore and protection from damage during running as well

as preventing fluid or cement slurry backflow from annular space to

string during cementing.

Equipping:

It is equipped with high-strength plastic guide plug resistant to high

axial compressive and bending loads. Shoe mounted float-type back

valve Real Seal II™ provides reliable pressurization of tube side both

in directional and horizontal wells. Guide plug of the shoe has central

circulation hole, and the additional side circulation holes are placed in

shoe body. Modern polymer materials used in producing shoes allow

standing continuous washover cycles with muds with high content of

abrasive particles, and provide quick drilling-out using PDC bit without

bit damages.

Example of conventional designation at the time of order:BITART type XXX shoe with float back valve and plastic guide plug for OK YYY thread ZZZwhere

OK – casingXXX – type (modification) of deviceYYY – casing diameterZZZ – type of tool joint

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SHOE WITH FLOAT BACK VALVE BITART TYPE 210


Shoes with float back valve BITART type 210 are produced for equipping

casings in diameter 101,60mm (4 in) up to 339,70mm (13 3/8 in), can be

produced with the following types of tool joints: buttress thread under GOST

632-80, buttress thread under API 5B.


type 210 can be equipped with additional options not included to the base set

and can be produced in modification BITART type 211, 212, 213, 214, 215,

216, 217.

Back valve real Seal II™

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• Under development the shoe valve unit was tested by back-pressure

of 30MPa (300 atm.) and flushing fluid with high content of sand within

24 hours.

• Design of shoe mounted back valve provides ability of its use in well

of any curvature;

• Presence of additional option “Auto fill-up” allows tripping-in casing

without loss of time for periodic stops for casing fill-up;

• Presence of additional option “rotation retention mechanism Safe

Lock™” allows excluding cement plug rotation during drilling-out,

facilitate drilling-out process, and reduce drilling-out time.

Shoe modification with float back valve and plastic guide plug BITART

ADDITIONAL OPTIONS

MODIFICATIONS

210 211 212 213 214 215 216 217

Base version + + + + + + + +

Side holes + - - - - + + +

Auto fill-up - - + - + + - +

“rotation retention mechanism Safe Lock™” - - - + + - + +

BITART 210 AND MODIFICATIONS

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Additional options:

“Without side holes” – absence of additional side circulation holes in

shoe body;

“Auto fill-up” provides auto casing fill-up during tripping-in (option

available for shoes from 168,28mm (6 5/8) to 339,70mm (13 3/8);

“Rotation retention mechanism Safe Lock™” prevents cement plug

rotation during drilling-out (option available for shoes from 168,28mm

(6 5/8) to 339,70mm (13 3/8).

Technical characteristics of shoe with float back valve and plastic guide plug BITART type 210, 211, 212, 213, 214, 215, 216, 217

PARAMETER VALUE

Casing OD, mm 101,60 114,30 146,05 168,28 177,80 244,48 323,85 339,70



Circulation hole diameter in guide plug, mm

60,00 80,00 100,00 100,00 110,00 160,00 180,00 200,00

Diameter of body circulation holes, mm*

20,00 20,00 22,00 22,00 22,00 26,00 26,00 26,00


Pump rate necessary for transferring back valve to operation condition, not less, l/sec*

8,0 15,0

Withstanding by valve of over pressure in direct and opposite direction, MPa**

30,0




411,00

431,00

421,00

411,00

431,00

421,00

347,00

367,00

357,00

375,00

395,00

385,00

377,00

402,00

382,00

400,00

430,00

410,00

400,00

420,00

410,00

400,00

420,00

410,00

Weight, kg 10,0 12,0 15,0 23,0 25,0 45,0 55,0 65,0

*parameter for shoes BITART type 210, 215, 216, 217**parameter for shoes BITART type 212, 214, 215, 217

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Designation:It designed for fitting bottomhole assembly for the purpose of its direction along the wellbore and protection from damage during well construction of difficult wells.

Equipping:It is equipped with eccentric plastic guide plug, which rotates during casing running. Rotating in the direction of least resistance the guide plug orients the shoe during running operations allowing bypassing obstacles facilitating casing RIH in difficult wellbore sections, sharp bends and curvatures.Eccentric plug has three circulation holes directed apart fro provision qualitative flushing. Body of the shoe has three additional side circulation holes.For the cases when during casing RIH the priority is circulation through central holes only there is shoe modification where side circulation holes closed by bursting discs. In case of central holes plugging the side holes are opened. This happens by means of creation over pressure in casing. When specific pressure value is reached discs are destroyed and circulation goes through created holes. Easy drilling polymer materials are used in producing shoes. This allows drilling-out using PDC bit without any damages to the bit.

Example of conventional designation at the time of order:

BITART type XXX shoe with float back valve and eccentric free rotating plastic guide plug for OK YYY thread ZZZwhereOK – casingXXX – type (modification) of deviceYYY – casing diameterZZZ – type of tool joint

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SHOE WITH FLOAT BACK VALVE AND ECCENTRIC FREE ROTATING PLASTIC GUIDE PLUG BITART TYPE 252


Shoes with float back valve and eccentric free rotating plastic guide plug

BITART type 250 are produced for equipping casings in diameter 101,60mm

(4 in) up to 339,70mm (13 3/8 in), can be produced with the following types of

tool joints: buttress thread under GOST 632-80, buttress thread under API 5B

and premium threads TMK FMC, TMK GF, TMK PF, TMK PF ET, VAM TOP.


type 250 can be equipped with additional options not included to the base set

and can be produced in modification BITART type 251, 252, 253

Free rotating plastic guide plug

Back valve Real Seal II™

Rotation retention mechanism Safe Lock™

22



• When rotating the guide plug orients the shoe during running operations allowing bypassing obstacles providing uninterrupted casing or liner RIH;

• The design of shoe mounted back valve provides ability of use in wells with any curvature;

• Presence of additional option “Auto fill-up” allows tripping-in casing without loss of time for periodic stops for casing fill-up;

• Presence of additional option “rotation retention mechanism Safe Lock™” allows excluding cement plug rotation during drilling-out, facilitate drilling-out process, and reduce drilling-out time.

• Presence of additional option “side holes adjustable opening pressure” allows casing RIH with high efficiency flushing through central holes in guide plug with no risk of accidents connected with loss of circulation due to shoe plugging.

Shoe modification with float back valve and eccentric free rotating plastic guide plug BITART

ADDITIONAL OPTIONS

MODIFICATIONS

BITART TYPE250

BITART TYPE 251

BITART TYPE 252

BITART TYPE 253

BITART TYPE 254

Base version + + + + +

Auto fill-up - + - + -

“rotation retention mechanism Safe Lock™” - - + + -

Side holes adjustable opening pressure - - - - +


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Additional options:

“Auto fill-up” provides auto casing fill-up during tripping-in (option available for shoes from 168,28mm (6 5/8) to 339,70mm (13 3/8);“Rotation retention mechanism Safe Lock™” prevents cement plug rotation during drilling-out (option available for shoes from 168,28mm (6 5/8) to 339,70mm (13 3/8).“Side holes adjustable opening pressure” – during RIH the circulation goes through central holes of shoe guide plug; the side holes are closed by bursting discs, which if necessary can be activated by means of creation over pressure in casing.* The use of shoes with Safe Lock™ option is possible only with corresponding equipment also equipped with Safe Lock™ option.

Technical characteristics of shoe with float back valve and eccentric free rotating plastic guide plug BITART type 250, 251, 252, 253, 254

PARAMETER VALUE

Casing OD, mm 101,60 114,30 146,05 168,28 177,80 244,48

Max. OD, mm 111,00 127,00 166,00 188,00 198,00 270,00




Quantity of holes in guide plug, ea. 3



8,0 15,0

Withstanding by valve of over pressure in direct and opposite direction, MPa**

30,0


Side holes opening pressure, MPa** 5,0



562,00

582,00

577,00

562,00

582,00

577,00

655,00

675,00

670,00

655,00

675,00

670,00

640,00

645,00

655,00

757,00

781,00

757,00

Weight, kg 25,0 30,0 40,0 45,0 50,0 90,0

*parameter for shoes BITART type 210, 215, 216, 217**parameter for shoes BITART type 212, 214, 215, 217

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Designation:

It is designed for separating spacer fluid and cement slurry squeezed

to annular space during casing cementing. It provides cleaning of

casing inner surface from cement slurry residues as well as leak-proof

fit to back valve and cementing process end signal.

Equipping:

It is equipped with high-strength plastic core covered with elastomeric coat made from wear resistant polymer material.Five-petal design provides stable running in string with firm separation of spacer fluid from cement slurry without loss of tightness across the whole squeezing interval.Qualitative casing inner wall cleaning is achieved by means of specially designed geometry of cement plug and foremost by means of special form of petals, its quantity and location.The use of modern high quality polymer materials allows plug standing high pressure differential excluding the possibility of its destroying during landing to back valve and ensuring the receiving of cementing process end signal at the surface.However, the high strength capacities the used materials provide easy drilling-out using PDC bit and do not inflict damages to the bit.

25

TOP CEMENT PLUG BITART TYPE 310

TOP CEMENT PLUG BITART TYPE 311

Special teeth of Rotation retention mechanism Safe Lock™

26


Top cement plugs BITART type 310 are produced for casing cementing in

diameters from 114,30mm (4 ½ in) to 339,70mm (13 3/8 in).

Base variant of top cement plug - BITART type 310. At customer’s option the

top cement plug BITART type 310 can be equipped with additional options not

included to the base set and come in the following modifications: BITART type

311.




• Under development the shoe valve unit was tested by differential

pressure of 20MPa (200atm.);



facilitate drilling-out process, and reduce well construction time.

• Used materials are compatible for operations in environments with

liquid fuels, oils, petrol etc. content;


type XXX top cement plug for OK YYY mm

where

OK – casing

XXX – type (modification) of device

YYY – casing diameter

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Additional options:* “Rotation retention mechanism Safe Lock™” prevents cement plug rotation during drilling-out (option available for plugs from 168,28mm (6 5/8) to 339,70mm (13 3/8);* The use of plugs with Safe Lock™ option is possible only with corresponding equipment also equipped with Safe Lock™ option.

Technical characteristics of top cement plugs BITART type 310, 311

PARAMETER VALUE

Casing OD, mm 114,30 146,05 168,28 177,80 244,48 323,85 339,70

Max. OD, mm 220,00 222,00 232,00 235,00 250,00 340,00 333,0

Min. ID after drilling-out, mm 110,5 140,0 161,50 171,00 235,00 314,00 329,0

Diameter of body circulation holes, mm* 20,0 20,0 20,0 20,0 15,0 10,0 10,0


Weight, kg 2,5 4,0 5,0 6,0 9,0 15,0 20,0

Modifications of top plugs BITART

ADDITIONAL OPTIONS/EQUIPMENTMODIFICATIONS


Base variant + +

Rotation retention mechanism Safe Lock™ - +

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Designation:

It is designed for separating spacer fluid or mud and cement slurry

squeezed to annular space for the purpose of excluding the shift

zone.

It provides cleaning of casing inner surface from mud residues as

well as leak-proof fit of top cement plug and cementing process end

signal.

Equipping:

It is equipped with high-strength plastic core covered with elastomeric coat made from wear resistant polymer material.Five-petal design provides qualitative casing inner wall cleaning from mud residues and provide stable running in string with firm separation of spacer fluid or mud and cement slurry without loss of tightness across the whole squeezing interval. Burst diaphragm, which is installed in core, serves as temporary deflector brattice. After landing bottom cement plug to back valve the burst diaphragm under certain differential pressure is destroyed thus forming the channel for further cement slurry squeezing through plug to annular space. After the end of squeezing process, the bottom plug allows performing leak-proof fit of top cement plug on it and receiving cementing process end signal. Modern polymer materials used in producing plugs provide easy drilling-out using PDC bit and do not inflict damages to the bit.

29

BOTTOM CEMENT PLUG BITART TYPE 320

BOTTOM CEMENT PLUG BITART TYPE 321

Special teeth of Rotation retention mechanism Safe Lock™

разрывная диафрагма

30


Bottom cement plugs BITART type 320 are produced for casing cementing in

diameters from 168,28mm (6 5/8 in) to 323,85mm (12 ¾ in).

Base variant of top cement plug - BITART type 320. At customer’s option the

top cement plug BITART type 310 can be equipped with additional options not

included to the base set and come in the following modifications: BITART type

321.




• Used materials are compatible for operations in environments with

liquid fuels, oils, petrol etc. content;



facilitate drilling-out process, and reduce well construction time.


type XXX bottom cement plug for OK YYY mm

where

OK – casing



31

Additional options:* “Rotation retention mechanism Safe Lock™” prevents cement plug rotation during drilling-out (option available for plugs from 168,28mm (6 5/8) to 339,70mm (13 3/8);* The use of plugs with Safe Lock™ option is possible only with corresponding equipment also equipped with Safe Lock™ option.

Technical characteristics of bottom cement plugs BITART type 310, 311

PARAMETER VALUE

Casing OD, mm 168,28 177,80 244,48 323,85 339,70

Max. OD, mm 210,00 210,00 225,00 315,00 315,00

Min. ID after drilling-out, mm 161,50 171,00 235,00 314,00 329,00

Diameter of body circulation holes, mm* 4,5 4,5 4,5 4,5 4,5

Max. operating temperature, °C 50,00 50,00 70,00 70,00 70,00

Weight, kg 130,0

Масса 5,0 6,0 9,0 15,0 20,0

Modifications of bottom cement plugs BITART

ADDITIONAL OPTIONS/EQUIPMENTMODIFICATIONS


Base variant + +

Rotation retention mechanism Safe Lock™ - +

32


Designation:

It designed for fitting bottomhole assembly for the purpose of preventing fluid or cement slurry backflow from annular space to string during cementing.

Equipping:

It provides leak-proof fit of cement plug and receiving cementing process end signal. Sleeve mounted float-type back valve Real Seal II™ provides reliable pressurization of tube side both in directional and horizontal wells.Special design of valve unit as well as modern polymer materials allow sleeves standing continuous washover cycles with muds with high content of abrasive particles. The user of easy drilling polymer materials provides drilling-out using PDC bit without any damages to the bit.


Sleeve with float back valve for OK YYY mm thread ZZZ

where

OK – casing



ZZZ – type of thread

33

1 – Body;2 – Spring;3 – Back valve;4 – Rod;5 – Plunger;6 – Seat.

SLEEVE WITH FLOAT-TYPE BACK VALVE - BITART TYPE 410

SLEEVE WITH FLOAT-TYPE BACK VALVE - BITART TYPE 413

Safe lock™

Real Seal II™

34


Sleeves with float-type back valve - BITART type 410 are produced for

equipping casings in diameter 101,60mm (4 in) up to 339,70mm (13 3/8

in), can be produced with the following types of tool joints: buttress thread

under GOST 632-80, buttress thread under API 5B and premium threads

TMK FMC, TMK GF, TMK PF, TMK PF ET, VAM TOP.

Base variant of sleeve - BITART type 410. At customer’s option the sleeve

- BITART type 410 can be equipped with additional options not included to

the base set and come in the following modifications: BITART type 411, 412,

413.



• Under development the valve unit was tested by back-pressure of 30MPa (300 atm.) and flushing fluid with high content of sand within 24 hours.

• Design of valve unit provides ability of its use in well of any curvature;

• Presence of additional option “Auto fill-up” allows tripping-in casing without loss of time for periodic stops for casing fill-up;

• Presence of additional option “rotation retention mechanism Safe Lock™” allows excluding cement plug rotation during drilling-out, facilitate drilling-out process, and reduce drilling-out time.

35

Modifications of sleeves with float back valve BITART

ADDITIONAL OPTIONS/

EQUIPMENT

MODIFICATIONS

BITART TYPE 410

BITART TYPE 411

BITART TYPE 412

BITART TYPE 413

Base variant + + + +

Auto fill-up - + - +

Rotation retention mechanism Safe Lock™ - - + +

Additional options:

“Auto fill-up” provides auto casing fill-up during tripping-in (option available for sleeves from 168,28mm (6 5/8) to 339,70mm (13 3/8);“Rotation retention mechanism Safe Lock™” prevents cement plug rotation during drilling-out (option available for sleeves from 168,28mm (6 5/8) to 339,70mm (13 3/8);* The use of sleeves with Safe Lock™ option is possible only with corresponding equipment also equipped with Safe Lock™ option.

Technical characteristics of sleeves with float back valve BITART type 410, 411, 412, 413

PARAMETER VALUE

Casing OD, mm 101,60 114,30 146,05 168,28 177,80 244,48 323,85 339,70

Max. OD, mm 111,00 127,00 166,00 188,00 198,00 270,00 350,00 365,00



8,0 15,0

Withstanding by valve of over pressure in direct and opposite direction, MPa

30,0


Type of tool joint OTTM tapered thread, OTTG sealing thread, buttress thread


270,00

290,00

300,00

270,00

290,00

300,00

270,00

290,00

300,00

330,00

360,00

370,00

345,00

360,00

380,00

400,00

430,00

445,00

400,00

420,00

410,00

400,00

420,00

410,00

Weight, kg 8,0 10,0 20,0 25,0 29,0 38,0 50,0 60,0

*parameter for sleeves BITART type 411, 413

36

FIELD TESTS RESULTS

Results of 245mm accessories tests (surface casing drilling-out time)

min

min

BITART

BIT

ART

BIT

ART

BIT

ART

1 B

ASE

2 B

ASE

3 B

ASE

4 B

ASE

5 B

ASE

BIT

ART

BAS

E

BITART BITART BITART BASE

1 test

1 te

st

2 te

st

3 te

st

rate

rate

rate

rate

rate

aver

age

aver

age

2 test 3 test average average

37

CONCLUSIONS

When using BITART accessories you receive the variety of advantages:

• Accessories deign has high strength capacities and fully adapted

for drilling-out using PDC bit;

• Absence of metal parts in accessories elements (all units are made

from modern easy drillable plastic materials) allows within small

period of time drilling BHA of previous casing;

• Compact sizes and small weight facilitate transportation, storage

and mounting of accessories on the rig.

Bit condition after drilling-out standard accessories

Bit conditions after drilling-out BITART accessories

FOR NOTES

Ufa 2016

currently “burintekh”, ltd is the major...

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