当代化工
噹代化工
당대화공
CONTEMPORARY CHEMICAL INDUSTRY
2014年
5期
867-869
,共3页
钻头性能评价%熵权法%主成份投影法%钻头优选
鑽頭性能評價%熵權法%主成份投影法%鑽頭優選
찬두성능평개%적권법%주성빈투영법%찬두우선
Bit performances evaluation%Entropy method%Principal component projection method%Bit optimization
针对深井、超深井深部井段钻井提速难题，可通过优选PDC钻头提高钻进速度、降低钻井成本。为了全面、客观地评价钻头性能的优劣，文在选取纯钻时间、机械钻速、进尺等钻头性能评价指标的基础上，采用熵权法对各评价指标赋权，应用主成份投影法对某油田PDC钻头性能进行评价并优选PDC钻头。采用优选出的 PDC 钻头，试验井平均机械钻速比邻井同组地层提高了15%，表明钻头选型方法合理，可用来优选和评价PDC钻头。
針對深井、超深井深部井段鑽井提速難題，可通過優選PDC鑽頭提高鑽進速度、降低鑽井成本。為瞭全麵、客觀地評價鑽頭性能的優劣，文在選取純鑽時間、機械鑽速、進呎等鑽頭性能評價指標的基礎上，採用熵權法對各評價指標賦權，應用主成份投影法對某油田PDC鑽頭性能進行評價併優選PDC鑽頭。採用優選齣的 PDC 鑽頭，試驗井平均機械鑽速比鄰井同組地層提高瞭15%，錶明鑽頭選型方法閤理，可用來優選和評價PDC鑽頭。
침대심정、초심정심부정단찬정제속난제，가통과우선PDC찬두제고찬진속도、강저찬정성본。위료전면、객관지평개찬두성능적우렬，문재선취순찬시간、궤계찬속、진척등찬두성능평개지표적기출상，채용적권법대각평개지표부권，응용주성빈투영법대모유전PDC찬두성능진행평개병우선PDC찬두。채용우선출적 PDC 찬두，시험정평균궤계찬속비린정동조지층제고료15%，표명찬두선형방법합리，가용래우선화평개PDC찬두。
For drilling speed increase problem of deep well and ultra-deep well,by optimization PDC bit for higher ROP and lower drilling cost.In order to evaluate bit performances, drilling time、ROP and footage other indexes are selected to evaluate bit performances, entropy method is assigned to each evaluation index, the principal component projection method is used to evaluate bit performances of an oilfield.The preferable bit which is selected by the entropy method and principal component projection method is tested,ROP of test well is improved by 15% than adjacent well in the same group, that show the rationality of the drill bit selection method, the method can be used to select and evaluate PDC bit.
