西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (4): 169-172.DOI: 10.3863/j.issn.1674 – 5086.2011.04.032
• 石油机械工程及其他 • Previous Articles Next Articles
LU Chang-qing
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Abstract: Well AT21X, which is an ultra-deep exploration well in Tahe Oilfield, adopts the ϕ 177.8 mm linercementing. The cementing operation is difficult owning to the deep depth, high temperature in the bottom hole,high content of chloride ions and special well-structure. During the cementing, two slurries of different settingtimes were used. In the slurries, 2% micro-silicon and 0.2% TAS153 were used to solve the problems caused bythe high temperature, high salt content, easy channeling and high water-loss when cementing an interval containingsalt formation. So the performances of cement slurries were improved as well as the cementing quality. Cementingquality test result is that 100% cemented intervals are qualified, 90% good and excellent. The cementing techniqueused provides a good example and some useful experiences, and can bring some guidance for the future cementingoperations concerning salt formation.
Key words: salt formation, liner cementing, cement slurry, cementing technology, pre-flushes
CLC Number:
TE256
LU Chang-qing. 177.8 mm Liner Cementing Technology in Well AT21X[J]. 西南石油大学学报(自然科学版), 2011, 33(4): 169-172.
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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.3863/j.issn.1674 – 5086.2011.04.032
http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2011/V33/I4/169