Wellcare Oil Tools Private Limited

Khushkhera, Bhiwadi, Rajasthan

Setting collar is a basic releasing collar used to carry the liner into the well. The right-hand releasing thread ensures easy release of the setting tool. The setting collar is made up on top of the liner hanger and is recommended for use when a liner extension is no planned. Its fluted top guide assures centering of the liner in the hole and its shape provides an internal guide for smooth running of tools into the liner.

For India and Iran Only

Setting collar can be provided with running thread to run the string with WC-RTRM running tool, setting collar having Internal Receptacle profile for retrievable pack off bushing.

This Stage-collar features an opening sleeve with area differences on opposite ends that allow it to be manipulated hydraulically. The hydraulicopening feature makes this tools use very practical in horizontal well.

Baffle Collar is an effective method for landing cementing plugs at specific points in the casing string. Useful in situations such as liner cementing and where no float collar or float shoe is being run. Cement filled collar that is easily drillable

The WELLCARE APV (Aluminum Plunger Valve) Float Collar run in a casing assembly, usually several joins above the Float Shoe. It serves as an extra back pressure from blow while running the assembly and after the cementing job. Internal latch and valve are readily drillable. Its capability of back-pressure is over 10, 000 PSI.

Features/Benefits:

Very fast PDC drillable half of the time in compare to conventional poppet positive valve avail in market.

Excellent leak resistive because of metal to metal seal.

Magnificent in flow rate is speciality of this model.

Distinguished performance in accordance to API RP 10F for pressure and temperature cycle.

Distinct wear resistance and any other effects during cementing circulation as plunger/ball is made up of special alloy.

Could be used in the role of NRV purpose as per requirements.

Three Stage Cementing collar is used to place a long column of cement about a weak zone. The Model: WC-SCCJB Stage Collar is located a short distance about the weak zone. The First Stage is cemented bypumping cement up to the WC-SCCJB Collar. The WC-SCCJB

Stage Cementing Collar covers sizes larger than 9- 5/8 inch. It offers operators all of the benefits of the Model: WC-SCCJ Stage Collar (Sizes 9-5/8 inch and smaller) and also features an outer closing sleeve which cannot be accidentally reopened. Non-API threads require the use of special casing sub.

Features:

• The circulation ports can be hydraulically opened, eliminating the need to use a free-fall opening plugs. Therefore, it is not restricted to well inclination.
• Internal closing structure and anti-rotation mechanism protect the closing sleeve from damage while drilling out the opening and closing seats.
• All internal parts are made of easily drillable material.
• Opening pressure adjustable upon customer request.

For India and Iran Only

A Liner Extension Assembly allows an existing Liner with a receptacle tobe extended to the surface or farther up hole. The assembly consists ofa seal Nipple and an Orifice Collar. The Seal Nipple is run at the bottomof the Extension casing.The Tieback Receptacle (TBR) is usually run as an integral part of theliner top packer or Setting Collar and at Liner top. It has special surfacefinish so as to provide a positive sealing bore for the seal nippleassembly during tubing string expansion and/or contraction in responseto pressure and temperature.The Polish Bore Receptacle provides the maximum integral openingthrough the production tubing and sealing system.The TBR Seal Nipple is the second part of the Tie back system andprovides a unitized seal assembly on a stem which connects to the endof tubing or casing string and to successfully create a packer less freeend tubing to casing seal.When used in un-cemented or frac applications the seal integrity ismaintained allowing tubing to expand and contract in responseto pressure and temperature differences without affecting the integrity ofthe tubing to casing seal. Typically a series V-ring (or Chevron)seal stacks are assembled on the seal nipple mandrel and separated byspacer rings.A Polish Mill is run before to clean out TBR. For cemented Tiebackapplications, the TBR Seal Nipple is combined with a stage collar orported put and an orifice float collar.The orifice float Collar is designed with small diameter drilled holethrough the float valve to allow fluid by-pass and preventing hydrauliclock as the seal nipple stabs into the TBR after cement is in place.Orifice Collar is positioned one joint above the Seal Nipple. Thisprevents hydraulic blockage as the seal is engaged in the receptacleand allows the Liner Extension to fill at a predetermined rate as it is run.The Orifice Collar also serves as a stopper for the cement plug.Designed to match the size, weight and grade of the liner tieback string.Incorporates a conventional Super Seal II valve assembly with a poppetvalve that incorporates an orifice flow port that allows pre-cementingpressure test to be performed on the TBR and stinger.

For India and Iran Only

Landing collar with catcher sub is used when setting liner hanger prior to cementing. A setting ball seats in the shear seat allowing pressure to be applied to the hanger to set the slips. Increasing the pressure after setting the hanger shears the ball seat allowing full circulation for cementing operations. The shear rating of the ball seat is adjustable to meet the requirements of the hanger.The collar incorporates a latch with non-rotational mechanism to accept, lock and seal the liner wiper plug upon completion of cementing. The catcher is provided to collect the ball seat with ball after shear.

For India and Iran Only

Hydraulically activated landing collar is used when running hydraulic set liner hangers or other hydraulic components run in a liner string. Shear setting of the assembly is field adjustable by the addition or removal of batch tested and matched shear screws. Internal components are constructed for wrought aluminum and are compatible for drill out. We retained ball seat design prevents the sheared out cage and ball assembly from interfering with float equipment run below the landing collar. Large, milled slots provide an unrestricted flow area while cementing. Shears/setting balls are available in bronze, aluminum or phenolic materials of varying specific gravity for use in vertical, high angle or horizontal wells or for specific cement weights. All seals are of standard HNBR material. A robust anti-rotation profile and latch assembly is designed to receive theliner wiper plug. When latched. These plugs provide a redundant seal to those of the float equipment. The body of the landing collar is manufactured of material matching the grade of the liner casing, which provides performance equal to or greater than that of the liner casing.

Features / Benefits:

• Positive anti-rotation profile for liner wiper.

• Robust latch assembly for liner wiper.
• Standard HNBR molded seals.

• Available with anti-wear coating.

An economical collar suitable for subcritical annular tolerances. Available in the size range 4 ½ ” to 20”, it has a cross bolt design which makes it an efficient and user friendly device.

Available in the size range 4 to 20, this device can be set in both upset and non-upset casing to provide maximum clearance during rotation. It has a groove in the middle into which a spiral nail can be driven for improved grip on the casing. The broader band firmly grips the collar into position around the casing.

Available in the size range 4 to 20, this device has a high cost-utility ratio. This hinged collar with a row of set screws positions easily and firmly around the casing.

This slip-on stop collar with set screw device is recommended for small hole operations. Available in size range 2-7/8 to 20 and is gripped on casing by a row of set screws. This is a heavy duty device.

For India and Iran Only

Latch type landing collar is used when running mechanical set liner hangers. It is designed to provide a latch-and-seal area for the liner wiper plug.A robust anti-rotation profile and latch assembly is designed to receive the liner wiper plug. When latched. These plugs provide a redundant seal to those of the equipment.The body of the landing collar is manufactured of material matching the grade of the liner casing, which provides performance equal to or greater than that of the liner casing.

For India and Iran Only

Landing Collar is used when setting liner hanger prior to cementing. A setting ball seat in the shear seat allowing pressure to be applied to the hanger to set the slips. Increasing the pressure after setting the hanger shears the ball seat allowing full circulation for cementing operations. The shear rating of the ball seat is adjustable to meet the requirements of the hanger.It incorporates a latch with Non- rotational Mechanism to accept, lock and seal the Liner Wiper Plug upon completion of cementing.

The Model WC-SCCZ Stage Cementing Collar is used to cement casing in two or more stages and allows operators great flexibility in controlling flow theology, cement chemistry, and down hole hydrostatic pressures. Typically, the Model “WC-SCCZ” Stage Collar is used where a single stage cement job would result in breakdown of a weak formation causing cement losses and or contamination of the producing zone.

Cement/Poppet type float equipment offers dependable performance for all classes of oil and gas wells. The valves prevent cement back-flow and provide casing buoyancy during run in Float Collar is Non-Rotational type pressure and Cementing Plug activated. Plugs feature the latch-down type anti-rotational feature which is compatible with the Float Collar and eliminates rotation during drilling. Float Equipment is manufactured to match customer casing specification. All Poppet type Cement Float Collars are PDC drillable.

Stab-In cementing is an improved method for cementing large diameter

casing. Conventional methods require excessive amounts of cement to

ensure cement circulation to surface because of open hole volume, losses

to the formation, or mud displacement efficiency that cannot be

determined with sufficient accuracy. In addition, large plugs must be used

to separate the cement from the mud and have to be drilled out, along

with any cement in the casing. With stab-in cementing, the Drill Pipe is

stabbed directly into the Float Shoe or Collar and cement is pumped

through the drill pipe until returns reach surface. Cement is then displaced

to the bottom of the Drill Pipe — a wiper dart can be used. The drill pipe is

then picked up, circulated, and pulled out of the hole.

Cement/Poppet-type Float equipment offers dependable performance for all classes oil and gas wells. The valves prevent cement backflow, provide casing buoyancy during run in, and act as internal BOP's during the process of running and cementing the casing. Float equipment is manufactured to match customer casing specification.All Poppet type cement float collars are PDC drillable.

Features/Benefits :

• Fast drill-out
• No metal parts-will not damage PDC bits.
• Free-floating ball abrades evenly.
• No springs.
• Operator-controlled buoyancy-regulated by
• Filling casing at surface.
• Cost effective.

Cement/Poppet-type Float equipment offers dependable performance for all classes oil and gas wells. The valves prevent cement backflow, provide casing buoyancy during run in, and act as internal BOPs during the process of running and cementing the casing. Float equipment is manufactured to match customer casing specification. All poppet type cement float collars are PDC drillable. Slip-ON Casing Collar O.D. matches with the casing O.D. and upper end is only beveled, not recessed for directly welding to the Casing pipe.

Cement/Poppet-type Float equipment offers dependable performance for all classes oil and gas wells. The valves prevent cement backflow, provide casing buoyancy during run in, and act as internal BOPs during the process of running and cementing the casing. Float equipment is manufactured to match customer casing specification. All ball type cement float collars are PDC drillable. Butt-Weld Casing Collar O.D. matches with the casing O.D. and upper end is only beveled, not recessed for directly welding to the Casing pipe.

The Auto Fill Cement Float Collar permits the casing to fill automatically while being run into the hole. The valve is always in the open position allowing maximum filling of the casing as it is lowered into the well bore. This is especially effective on liner jobs and sensitive hole conditions. The circulation may be established at any time during or after casing is run. The flapper type back pressure valve does not become operative until the drop ball is dropped or pumped down. Like Differential Fill-up Equipment, the Collar is activated by the same ball. From this point on, like Differential Fill-up Collar, this Auto Fill Cement Float Collar acts as conventional Floating Equipment. All Auto Fill Cement Float Collars are PDC drillable.

Differential Fill-up Float Equipment allows 90 per cent casing fill-up during

run-in, reducing surge pressures caused by the piston effect of running

casing in restricted IDs. Use of Differential Collar with Shoe provides

additional buoyancy by allowing only 81 per cent casing fill-up further

enhancing draw works efficiency.

Circulation can be established at any time while running in. Dropping a

ball converts the Differential Valve to a regular Back-Pressure Valve.

When Collar and Shoe are run together, dropping one ball converts both

units.