Cement Quality Control Program Shows Substantial Savings

Abstract

The importance of controlled fluid loss, free water and proper blending of additives for successful primary cementing has been well documented by several authors 1 • This study concentrates on eight Chevron operated onshore and offshore fields in southern California.In this division approximately 135 wells with over 180 casing strings were analyzed. These we 11 s range in depth from 2, 000 (610m) to 14,000 (4270m) feet and were drilled from 1980 to the present.Two-thirds of the wells were drilled prior to initiation of the cement quality contra l program which began in August of 1985.