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Master the Art of Using CementingPlugs
Cementing operations are one of the most detailed works which requires complete attention regarding well integrity. Since it is a critical job, it requires a lot of research
largenumberofoperations the years
but yet it during
faces after helps
solving such problems especially for the petroleum industry globally and can occur at any moment of the wellâ€™s lifecycle.
Well integrity issues categorized according to the moment at whichhappens:
During the period between 1992 and 2006, the leading cause for blowouts was cementing. The first category results in veryseriouswell-control problems including blowouts. These problemsfirstly
o at whichccurbecauseoftheimproperdesignof
thecementingoperations hydrostatic pressure of
slurries. The failure during the process of mixing slurries obtains the desire density and lost circulation during the cement displacement.
In the second category, the loss of hydrostatic pressure of the cement slurries causes problem during the initial hydration period. The problems may rise because of the mismanagement. It can cause pressure build up in the annulus between the casing
this are normally expensive anddifficult.
In the third at whichstage, the problems that occur are more long-term normally caused by poor cementing jobs. Defective drilling mud removal during the cement slurry displacement in the annulus, insufficient cement height that may lead to casing leakage and corrosion problems are some of the causes. Cementing Plugscan contribute to long-term well integrity failures, otherwise, the cost to fix these problems are highlyexpensive.
Puyang at whichZhongshi GroupCo.Ltd.
Mazhuangqiao,Puyang City,Henan Province,China Website:http://www.zs-oilfieldequip.com