Casewell Drilling Services Private Limited

Heavy Duty Set Scre Stop Collars are made from seamless steel pipes, the gripping force is applied by one row of Set Screws. The outside ends of these collar are generally tapered to a degree which helps to hold the centralizer and avoid the ends to hit the Bows when the centralizers are placed over them. They are available in all sizes ranging from 2 ⁷/₈" to 20".

Casewell’s Heavy duty Spiralizers are specially designed for highly deviated horizontal wells and for use with liner hangers.

The heavy steel construction is highly effective as compared to other alloys and its construction provides maximum standoff. These Centralizers provide low coefficient of friction to reduce drag forces while running in pipe thus optimizing mud displacement and minimizing pressure drop across the Centralizer. They have a high wear resistance and resist high side loads. These are available in all sizes ranging from 3¹/₂" to 13³/8".

Hinged bolted Stop Collar can be latched on the casing pipe without having to be slipped on at the end of the casing pipe allowing easy installation. The locking mechanism is at 180 degrees of the hinge. A single bolt is used to tighten the collar to the casing.

This design does not make any marks or indentations on the casing. On locking it can be tightened for a holding force upto 1000 % of the centralizer starting force as per API 10 D. They are available in all sizes ranging from 2 ⁷/₈" till 30".

Designed for high restoring force combined with low starting force for centralizing the casing pipe in vertical, deviated and horizontal wells. High performance characteristics are combined with easy field assembly bow springs are of high quality alloy steel, hot bent to shape using dies and then heat treated under controlled temp / time cycles for consistent spring characteristics. Collars are of widened design for greater frame strength and to prevent bows hitting casing. Integral hinges are designed to wrap to the inside and are with eight sections and seven shear points for minimum disorientation even under severe stress. Hinge locking pins are of high strength steel for maximum structural strength.

bows can be configured for any hole dia from choice of five standard bow heights for optimum starting and restoring forces.

compatibility of the bows with various end collar sizes reduces inventory requirements and provides tremendous flexibility of casing and hole size combinations.

centralizers undergo a special process of rust prevention before painting .

these can be shipped in half assembled condition for economy in shipping and storage costs. They are available in all sizes ranging from 2 ⁷/₈" till 30"

Designed for positive centralization of casing pipe for highly deviated and horizontal wells fitted with specially designed U shaped bows for maximum fluid flow but retaining required rigidity for 100% stand off (concentricity) even in deviated and horizontal wells.

Collars with integral hinges and hinge pins are of same design and have similar processing features as Standard Centralizers. Bows can be selected to meet any hole diameter from a choice of ten standard U profile depths and bow heights.

Bows are of high quality alloy steel for consistent characteristics. They are available in all sizes ranging from 3½” to 20”. Compatibility of the bows with various end collar sizes reduce inventory requirements and provides tremendous flexibility of casing and hole size combinations.

Centralizers undergo a special process of rust prevention before painting. These can be shipped in half assembled condition for economy in shipping and storage costs.

Hinged Set Screw Stop Collars are hinged at two places 180 degrees apart and gripping force is applied by a single row of set screws holding the collar to the casing.

They can be latched onto the casing pipe without having to be slipped on at the end of the casing pipe allowing easy installation.

hinged spiral nail stop collar are hinged at two places 180 degrees apart and one spiral nail in each half is driven between collar and the casing. It tightens the collar to the casing firmly.

they can be latched on the casing pipe without having to be slipped on at the end of the casing pipe allowing easy installation. These are most effective where low annular clearance is encountered.

Designed for high restoring force combined with low starting force for levels where differential sticking may occur and low running & starting forcesare desirable with high restoring force to maintain proper casing stand off. Collars are of special design with roll formed peripheral ridges which provide extra rigidity and minimizes out of round distortion in shipping.

Welding of bows to collars is carried out under controlled conditions to ensure crack free weld with minimum distortion and maximum rigidity.

Design and processing features for hinges, hinge pins , bow springs are similar as hinged non welded bow spring centralizers. Bows can be configured from a choice of seven standard bow heights for optimum starting & restoring forces. They are available in all sizes ranging from 2 ⁷/₈" till 30".

These are generally shipped in half assembled condition for economy in shipping and storage costs. Centralizers undergo a special process of rust prevention before painting .

Casewell's Non Welded Turbolizers have deflector fins that are available as "Right Hand Fin and Left Hand Fin”.

These fins are specially made of heat-teated spring steel. Bow springs are of high quality alloy steel, hot bent to shape using dies and then heat treated under controlled temp / time cycles for consistent spring characteristics. Collars are of widened design for greater frame strength and to prevent bows hitting casing.

Integral hinges are designed to wrap to the inside and are with eight sections and seven shear points for minimum disorientation even under severe stress. Hinge locking pins are of high strength steel for maximum structural strength. Turbolizers undergo special process of rust prevention before painting . They are available in all sizes ranging from 4¹/₂" to 20".

Casewell's Rotating Centralizers were developed for the requirement of Centralizers that could be used with a rotating liner in highly deviated well conditions.

These Centralizers are specifically designed to meet or even exceed the API 10 D Specs so as to have high restoring force which provides optimum stand-off and low moving force to minimize drag.

These Centralizers allow free rotation of the pipe for maximum displacement efficiency. Casewell provides these Centralizers with ‘stop collar inside’ design so as to minimize moving forces while reciprocating.

the semi rigid centralizers of casewell has the ability to withstand high lateral load encountered. Its semi rigid design increases the ratio of restoring force to moving force. It has the ability to withstand compressive loading while running in the wellbore due to its non-weld design. The spring characteristics of its double crested profile permit compression to facilitate movement through tight spots and dog legs.

semi rigid centralizers increase contact area for less bow penetration into the formation and helps in complete mud removal while cementing.

bows can be configured for any hole dia from choice of five standard bow heights for optimum starting and restoring forces. Centralizers undergo a special process of rust prevention before painting. Casewell’s semi rigid centralizers are available for close tolerance applications and can be installed over stop collars. These are available in all sizes ranging from 3½" to 20".

Slip on Aluminum Set Screw Stop Collar is of one piece high strength corrosion resistant Aluminum alloy collar and the gripping force is applied by one row of Set Screws. The outside ends of these collar are generally tapered to a degree which helps to hold the centralizer and avoid the ends to hit the Bows / Vanes when the centralizers are placed over them.

They are available in all sizes ranging from 2 ⁷/₈" to 20".

designed specifically for positive centralization of casing pipe for highly deviated and horizontal wells. These are fitted with specially designed boat shaped vanes for low friction to reduce drag force while running the pipe. Vane design also resists high side loads.

one piece roll formed collars & spirally oriented vanes welded under controlled conditions for maximum rigidity and minimum distortion.

steel construction provides superior toughness over other materials and alloys. Spiral orientation creates vortex flow to optimize mud displacement and minimizes pressure drop across the spiralizer. Vanes can be selected to meet any hole dia from a choice of seven boat profile depths.

slip on spiralizers are provided for direct installation on pipe by slipping on and can be provided with compatible stop collars slightly tapered on outside surface positioned by set screws. They are available in all sizes ranging from 3¹/₂" to 13³/8". They undergo a special process of rust prevention before painting .

Operational and general design features are the same as Hinged Welded bow spring Centralizers.

Collars are of special design with roll formed peripheral ridges which provide extra rigidity and minimizes out of round distortion in shipping.

Welding of bows to collars is carried out under controlled conditions to ensure crack free weld with minimum distortion and maximum rigidity.

Bows can be configured from a choice of seven standard bow heights for optimum starting & restoring forces. They are available in all sizes ranging from 2 ⁷/₈" till 30".

Centralizers undergo a special process of rust prevention before painting . Slip on centralizers are provided for direct installation on pipe by slipping on and can be provided with set screws for elimination of stop collars. They are shipped in assembled conditions only.

These Centralizers are available in both 'Short' as well as 'Long' depending on their length

Spiral Rigid Centralizers increases induced swirl which increases the displacement efficiency . They are specially designed with extra length to give maximum centralization. These Centralizers are available in one-piece corrosion resistant cast Aluminium,high strength Boron, non sparkling Zinc Alloy or in solid steel. They also function as bearings during pipe rotation and reduce torque requirements.

Spiral blades overlap 360 degree circumference and give reduced flow area between them and also reduces casing drag and plow effect.

These centralizers are available with or without et screws for eliminating of stop collars.

Vanes can be selected to meet any hole diameter from a choice of ten Vanes. They are available in sizes ranging from 3¹/₂" to 13³/₈".

These Centralizers are available in both 'Short' as well as 'Long' depending on their length

Straight Rigid Centralizers are specially designed with extra length to give maximum centralization. These Centralizers are available in one-piece corrosion resistant cast Aluminium,high strength Boron, non sparkling Zinc Alloy or in solid steel.

The straight blades of these centralizers reduce casing drag and plow effect. They are designed for use in highly deviated and horizontal wells and act as bearing during pipe rotations.

These centralizers are available with or without set screws for eliminating of stop collars.

Vanes can be selected to meet any hole diameter from a choice of ten Vanes. They are available in all sizes ranging from 3¹/₂" to 13³/₈".

Casewell's Welded Turbolizer have all the characteristics of a regular centralizer. These are also available either with a left hand fin or a righr hand fin.These fins are specially made of heat treated spring steel.Bow springs are of high quality alloy steel, hot bent to shape using dies and then heat treated under controlled temp / time cycles for consistent spring characteristics.

Welding of bows to collars is carried out under controlled conditions to ensure crack free weld with minimum distortion and maximum rigidity. Turbolizer undergo special process of rust prevention before painting . They are available in all sizes ranging from 4¹/₂" to 20".