A. Planning Cementing Engineer 1. Ensure cement samples and additives used for testing are representative of the cement to be used for the job.2. Ensure that adequate cementing products are at the rigsite before running casing.3. Involved in preparing cementing programme with Halliburton HMD and Drilling Engineer.4. Halliburton HMD to send a draft programme, no … Cementing Operations Responsibilities Checklist
The Cement Programme gives a detailed description of any non standard operations which are proposed. It shall also outline risks involved and precautions to be taken. (Reference shall be made to the Drilling Programme as appropriate.) Well Status Previous Casing The Cement Programme shall include: diameter (inches) weight (lbs/ft) grade coupling shoe measured and vertical … Contents of the Cement Programme
Where small amounts of cement are used, eg., when setting a plug across a window cut in casing, of maximum length 50 ft, the plug can be set by the “running plug” method as detailed below: 1. Run in with stinger to required depth. Ensure that the circulating head is only one metre above the … Procedure for Setting Short Plugs
Operations Engineer to organise pre-job planning meeting at the rig site, with rig and related service personnel to discuss the job objective and hazards. Check pipe tally correctly (lengths & sizes). Check volumes based on open hole, casing size(s); cement string and drill pipe. Confirm type of fluid in hole and actual bottom hole temperature. … Setting a Magna + cement plug – Best Practices
This article gives an example of calculation for a typical balanced cement plug job. Parameters to be Calculated The following parameters shall be calculated for the setting of a balanced plug. 150 % of drillpipe/stinger contents. required slurry volume taking all excess requirements into account. tonnage of cement. mixwater requirements. spacer volumes. theoretical TOC in … Balanced Cement Plug Example Calculations
Circulation repair cementation is used when cement behind casing has a poor CBL and zonal isolation is required. The casing is perforated in two places, a retrievable packer is set between the perforations and a circulation test is carried out. If circulation is possible at a sufficient rate, a cement retainer is set in a … Circulation/Squeeze Cementation Repair/ Remedial
Planning and supervision is crucial in cementing operations. This article describes the key responsibilities for the Drilling Supervisor, Cementing Engineer, Mud Engineer and Drilling Contractor. Operations Engineer ensure cement, mixwater and additive samples are sent in time to the service company for testing check that the cementation proposal meets the objectives of planned cementing operation … Responsibilities during cementing
Spacers are any fluids other than cement slurry or mud, pumped ahead (preflush) or behind (postflush) the cement slurry. Preflushes are used to: prevent contamination of cement slurry with mud improve mud displacement and mud cake removal. Postflushes are used to prevent: the plug from spinning when it will be drilled out (cement on top) … Spacers for cementing
Calibrate rig pumps efficiency during the conditioning trip prior to pulling out of the hole to run casing. Check and line up manifold valves so that pumping can start upon positioning liner with shoe in place. Washing down the liner could be necessary. Use liner with 60,000 lbs shear pin. 1. Setting Temblock Plug / … Example 7in liner 2 stage cementing procedure
(1) Set the plug on a firm foundation, if one is not available set the plug on an polymer retaining spacer with the same weight as the mud. (2) Always use a polymer spacer weighted to midway between the mud and the cement slurry. Use a volume of spacer sufficient to give at least a … Tips for the successful placement of cement plugs