api oil well cement - oil-well cementing practices in the united states January 1, 1959 - API FOREWORD: Each year in the United States several thousand wells are drilled and completed - some productive of oil or gas and some dry - and during this drilling and completion most of these wells are cased, with the casing set in the bore hole surrounded by oil-well cement . This specification is also applicable to well cement classes G and H, which are the products obtained by grinding clinker with no additives other than one or more forms of CaSO 4, water, or chemical additives as required for chromium (VI) reduction. Application of the API Monogram Oil well cements should conform to The American Petroleum Institute (API) specification 10a, Specification for Cements and Materials for Well Cementing. The specification designates eight types of oil-well cement, Classes A through H. Each class is specified for use in a certain range of well depth, temperature and pressure. Of these groups, the best known to the oil industry are ASTM, which deals with cements for construction and building use, and API, which writes specifications for cements used only in wells. The ASTM Spec. C150 provides for eight types of Portland cement: Types I, IA, II, IIA, III, IIIA, IV, and V,
Well Cement is manufactured in accordance with the U.S. API SPECIFICATION 10 A Standard Class G HSR (High Sulfate Resistant). This brand of cement is
standards set by the American Petroleum Institute. (API). In Ghana, imported class G cement is used. for the oil and gas wells cementing operations. Cementing 29 Nov 2019 the API standard , which makes a cement density of approximately 16.44 lbm/ gal . In deep oil wells, the use of cement with a higher density Selected raw materials. • 1903: Portland cement in oil wells. • 1917: “Oilfield” cements. • API created 20 Mar 1919. • 1940: ASTM Types 1 to 5. • 1948: API Code API Standards Committees are made up of Equipment; SC10- Subcommittee on Well Cements; SC11-
Oil well cements should conform to The American Petroleum Institute (API) specification 10a, Specification for Cements and Materials for Well Cementing. The specification designates eight types of oil-well cement, Classes A through H. Each class is specified for use in a certain range of well depth, temperature and pressure.
Quality. The types of cement are categorized according to the American Petroleum Institute (API) Specification10A standards, which has identified 8 classes of cement according to the depth of the well, the temperature and pressure. Cement is also classified in grades: Ordinary (O), Moderate Sulfate Resistant (MSR), Meetings of the API Subcommittee on Oil Well Cements (SC 10) will address: Well Cements testing; Well Cement Manufacturing Specifications; Casing Centralizers; Cementing Float Equipment; Cement Sheath Evaluation; Shrinkage and Expansion in Oil Well Cements; Worldwide Cementing Practices