PE3313-Chapter 6 - Cementing Technology

PE3313-Chapter 6 - Cementing Technology - PE 3313 DRILLING...

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1 1 PE 3313 – DRILLING AND COMPLETION 1 – FALL 2010 By Dr. Samuel O. Osisanya, PE Associate Professor Mewbourne School of Petroleum and Geological Engineering The University of Oklahoma 2 Cementing Technology
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2 3 Topics Cementing materials and additives Cement slurry design and slurry properties Cementing operations and cement evaluations Factors necessary for successful primary cementing Remedial cementing Cementing calculations Appendix 4 Steps in Manufacture of Cement The raw material, calcareous (limestone) and argillaceous (clay/shale) is fed into the upper end of a slopping kiln at a uniform rate, and slowly travels to the lower end which operates at a T=2600 - 2800 o F. Raw material is converted to cement clinker which varies in size from dust to about 2-in diameter. The clinker contains 4 compounds which are the principal cementing materials.
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3 5 API Classification for Oil/Gas Well Cements Class A: Intended for use to 6000 ft. (1829 m) depth** (170oF.) (77oC) when special properties are not required. Similar to ASTM C 150, Type I Cement. Class B: Intended for use to 6000 ft. (1829 m) depth** (170oF) (77oC) when moderate sulfate resistance is required. Similar to ASTM C 150, Type II Cement. Class C: Intended for use to 6000 ft (1829 m) depth** (170oF) (77oC) when high early strength is required. Similar to ASTM C 150, Type III Cement. Available in regular and high sulfate-resistant types. Class D: Intended for use from 6000 to 10000 ft. (1829 m to 3048 m) depth** (230oF) (110oC) when moderately high temperatures and high pressure are encountered. Available in regular and high sulfate-resistant types. Class E: Intended for use from 6000 to 14000 ft. (1829 m to 4267 m) depth** (290oF) (143oC) when high temperature and high pressure are encountered. Available in regular and high sulfate-resistant types. Class F: Intended for use from 10000 to 16000 ft. (3048 m to 4877 m) depth** (320oF) (160oC) when extremely high temperature and extremely high pressure are encountered. Available in regular and high sulfate-resistant types. Class G: A basic cement intended for use to 8000 ft. (2438 m) depth** (200oF) (93oC) and compatible with accelerators or retarders for use over the complete range of Classes A through E. Similar in chemical composition to API Class B. Class H: A basic cement intended for use to 8000 ft. (2438 m) depth** (200oF) (93oC) and compatible with accelerators or retarders for use over the complete range of Classes A through E. Similar in chemical composition to API Class B. Reproduced by permission from API RP 10B, "Recommended Practice for Testing oil-well Cements and Cement Additives. The depth limits are based on the conditions imposed by the casing well-stimulation tests and should be considered as approximate values. 6
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This note was uploaded on 11/29/2010 for the course PE 3313 taught by Professor Sam during the Spring '10 term at The University of Oklahoma.

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PE3313-Chapter 6 - Cementing Technology - PE 3313 DRILLING...

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