Mechanical Stage Cementing Collar
DIC is a Supplier and Exporter of Mechanical Stage Cementing Collar in Ajman, UAE. These are mainly used to effectively cement upper sections of the casing string after displaying cement around the lower section. It is provide a means of opening and closing port holes for cement displacement and positive prevention of the cement after dislocation. The all internal parts are easily drilled, and are firmly held from rotating during drilling.
After running the collar to determine the depth, the lower section is cemented in the conventional manner except the cement is displaced with the malleable cementing plug furnished with the collar. A slight pressure build-up of 300 400 P.S.I. will make sure plug is seated in Baffle. The second stage is displaced with the closing plug that is also furnished with the tool. When the closing plug bumps approx. 800-1000 P.S.I. pressure will close the port holes.
- These are made from material grade up to 135,000 psi minimum yield, including material suitable for sour gas service
- Common steel grades i.e. J-55, K-55, L-80, P-110 form standard manufacturing steel grades
- API & Premium connections are available upon request.
- No welds are used on any portion of the tool.
- The reduced length of the tool minimizes the effect of bending stresses.
- The closing sleeve is held in the closed position by an internal lock ring.
- Both the opening and closing sleeves lock against rotation for easy drill out.
Application & Features:
