Wellcare Oil Tools Private Limited

Khushkhera, Bhiwadi, Rajasthan

Drilling Safety Joint provides safe and easy release make-up as require. This tool is designed to transmit torque in either direction when placed in the drilling, fishing or wash over strings. The safety joint consists of a pin section, a box section, and a friction ring. The internal connection of the safety joint is a coarse acme thread used to facilitate easy pack-off and re-engagement. A knurled release ring between the box and pin sections maintain torsion integrity until back-off procedure is initiated. An O-ring seal contains pressure while the safety joint is made up.

Assembly and Operation:

To assemble, install the safety joint in the drill string as indicated below. Make up the service connection to a torque of approximately 60 to 75% of the drill string connections.

In drill strings, the safety joint should be located above the drill collars to avoid compression.

In fishing strings, the safety joint should be located directly above the fishing tool but below the jar or bumper sub.

In wash over strings, the safety joint should be located between the drill pipe and the wash over pipe. Wellcare Wash over Safety Joints is provided with a tool joint box thread and a wash over pipe pin thread.

To disengage the safety joint while down-hole, place pipe in tension and apply left-hand torque. Hold torque while slowly lowering pipe until safety joint breaks. Continue to unscrew safety joint to the left. To re-engage the safety joint, lower pipe until pin section of safety joint lands on box section. Apply one point of weight. Rotate to the left one or two turns. Then rotate to the right until torque builds up, indicating safety joint is made up.

The safety joint provides for emergency recovery of the major portion of the tubing string while it becomes necessary to abandon the equipment under the string. Precision left hand square threads facilitate release of the joint by right hand tubing rotation. Equipment requiring right hand rotation should not be used to below the safety joint.

The Safety Joint requires only a straight pull for parting. These assemblies are often placed in the tubing string between packers when two or more packers are run in tandem. This safety joint should be

placed above the position where sand or other adverse conditions may occur to prevent normal movement of the tubing.

Non Rotational Shear Out Safety Joint is used between packers in dual and triple completions also in selective completions using hydrostatic single string packers. It is also used when rotational releasing is not desired. When run above the upper packer in a single string completion, the shear value should be adjusted to compensate for any hydraulic conditions that exist when the string is landed, or that are created by well treating operations. This model has torque transmission feature.

For India and Iran Only

Seal Joint with grounded ODs is to provide a sealing surface for theretrievable/drillable Pack-off Bushing. These are manufactured fromhigher group of API 5CT standard materials as well as furnished withend connections in compliance to API standards or any premiumthreads as per the customers requirement/demand. CRA materialssuited for H2S or CO2service are available on request. A groove isprovided at the bottom end to attach the Liner Wiper Plug.Our seal joint manufactured from high grade alloy material and surfacewould be chrome platted so as to possess resistance for corrosiveenvironments.

The Wellcare Washover Safety Joint is manufactured to provide safe and easy release and makeup whenever disengagement from the washover string becomes necessary. This dependable, field tough tool is designed to transmit torque in either direction when placed in the washover string.

Construction : The Wellcare Washover Safety Joint consists of a pin section, a box section, and a friction ring. The internal connection of the safety joint is a coarse acme thread used to facilitate easy packoff and reengagement. A knurled release ring between the box and pin sections maintain torsion integrity until back off procedure is initiated. An Oring seal contains pressure while the safety joint is made up.

Assembly :

To assemble, install the safety joint in the drill string and make up

• the service connection to a torque of approximately 60 to 75% of the string connections. In washover strings, the safety joint should be located between the drill pipe and the washover pipe. Wellcare Washover Safety Joints are provided with a tool joint box thread up and a washover pipe pin thread down.
• To disengage the safety joint while down hole, place pipe in tension and apply left hand torque. Hold torque while slowly lowering pipe until safety joint breaks. Continue to unscrew safety joint to the left. To reengage the safety joint, lower pipe until pin section of safety joint lands on box section. Apply one point of weight. Rotate to the left one or two turns. Then rotate to the right until torque builds up, indicating safety joint is made up.