Reaming With Casing and Rotating While Cementing

B. Antony Fayaz, K. Vasan and Jay Jenith

BE (Petroleum Engineering) AMET University, Chennai - 603 112, India.

DOI : http://dx.doi.org/10.13005/bbra/1407

ABSTRACT: During Cementing operations, rotating and reciprocating methods plays major role in Casing system. Casing, once landed which cannot be moved prior to cementing, is a positive indication that something is wrong. The use of a single ball launcher and cement plug coupled with a modern casing-running tool allows the casing string to be run, washed, reamed, and cemented as part of a seamless operation. This adds the benefit of getting casing to bottom despite difficult formations, and the ability to transition immediately to cementing operations while retaining the ability to rotate and reciprocate. During Cementation, Pipe movement has recently become a simple operation for any operator to include in a drilling program: there is minimal cost and planning required. A cement plug is attached to the bottom of the proprietary Casing Drive system(CDS) and it is a trademark of TESCO Corporation. A side entry swivel sub is included between the CDS and the top drive. A ball launcher, also provided, is rigged up in line with the chicks an lines running from the cementing pump truck to the side entry swivel sub. The solution allows the operator to go directly to cementing after the casing has been run. It also enables the rotation and reciprocation of the pipe during cementation, which prevents channeling of cement and leads to a notably superior cement job as proven by cement bond logs. Using a hybrid cementing tool with a modern casing running system allows wells to be engineered more aggressively, thus the ensure casing can be run to bottom in difficult formations and guarantee an improved cement job. In turn, this provides greater production and returns for the operator.

KEYWORDS: Casing Driving System, Ball launcher, Cement head, Conventional casing elevators

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