Introduction Drill pipe elevators are essential wellhead tools used in drilling and well-servicing operations to suspend drill strings directly. They connect to elevator links and accommodate different pipe diameters. Based on the suspended pipe type, elevators are classified into drill pipe elevators, casing elevators, and tubing elevators. According to their structure, they are categorized as side door double-locking elevators, hinged double-locking elevators, and latch ring elevators, with latch ring elevators being the least common.
CSD-type group slip elevators are widely used in drilling operations. These elevators consist of a main body, hinge, cotter pin, lock pin handle, balancing screw, and upper and lower lock pins. The load-bearing steps include flat steps and 18-degree tapered steps.
1. Side-Door Elevators The ICD-type side-door elevators consist of a main body and a gate. The gate is connected to the main body via a pin shaft and functions to open and close the elevator bore. When closed, the upper and lower lock pins automatically secure the gate to the main body. To open, the operator presses the lock pin handle and pulls outward with slight force.
A double-locking limit block is included on the top surface of the main body. When the top surface is under load, the pipe column presses against the limit block, preventing the gate from opening. The gate can only open when the load is removed, ensuring enhanced safety.
Each elevator set comes with a safety pin. After inserting the elevator link into the side ears of the main body, the safety pin is inserted to prevent detachment, ensuring safety during pipe handling operations.
2. Hinged Elevators Compared to side-door elevators, hinged elevators offer more convenient operation. They consist of a left body, right body, lock pin, safety handle, gate pin, and spring. The left and right bodies have rectangular arms for attaching elevator links. The lock pin connects the two bodies, forming a unified structure, and the safety handle ensures the lock pin remains secure during pipe running and pulling operations.
Important Safety Considerations
- (2) Operating temperature should not be lower than -40°C.
- (3) Avoid impacts that may cause deformation or mechanical damage.
- (5) Do not weld, grind, cut, or drill on the elevator body.
- (6) If wear in load-bearing areas exceeds 1.5mm, repair or discontinue use.
- (7) Ensure elevator specifications match drill pipe sizes; check for flat, undamaged load steps, smooth hinge pins, and secure locking mechanisms.
- (8) Always use safety pins and subs when handling pipes; avoid sudden impacts or improper operations.
- (9) Do not exceed load limits or use the elevator to lift heavy objects with rope slings.
- (10) When positioning the elevator on the rotary table, avoid interference with slip lock pins and ensure even load distribution.
Why Choose China Welong Elevators? At China Welong, we provide high-quality, durable, and precision-engineered elevators for drilling operations. Our elevators ensure maximum safety, reliability, and compliance with industry standards.
Post time: Feb-27-2025
