石油钻采工艺
石油鑽採工藝
석유찬채공예
Oil Drilling & Production Technology
2015年
5期
63-67
,共5页
刘天科%刘成贵%刘湘华%李文明%路峰%李延伟
劉天科%劉成貴%劉湘華%李文明%路峰%李延偉
류천과%류성귀%류상화%리문명%로봉%리연위
砂砾岩体%PDC钻头%个性化设计%旋转射流%切削齿
砂礫巖體%PDC鑽頭%箇性化設計%鏇轉射流%切削齒
사력암체%PDC찬두%개성화설계%선전사류%절삭치
glutenite%PDC bit%individual design%rotary jet%cutting tooth
针对胜利油田东营北带丰深1与盐227区块沙四下砂砾岩体地层岩石研磨性强、可钻性差、机械钻速低、钻头寿命短的技术难题,开展了旋流PDC钻头个性化设计与应用研究。通过室内实验,优选出了适合该地层特点的PDC切削齿类型;通过电脑模拟,优化了钻头的冠部轮廓、切削结构和切削齿后倾角设计;研制出旋转射流喷嘴,设计并试制了水力与机械联合破岩的新型PDC钻头。在丰深1-平1井的砂砾岩体地层中进行了钻井试验,与其他类型PDC钻头相比,机械钻速提高了46.8%,单只钻头进尺提高了69.6%;与牙轮钻头相比,机械钻速提高了48.1%,单只钻头进尺提高了156.5%。在盐227井工厂砂砾岩体井段推广应用也取得了明显的提速效果,机械钻速提高26%,平均单只钻头进尺提高102 m。研究成果对PDC钻头个性化设计具有一定的借鉴意义,对硬的强研磨性地层钻井提速具有推广应用价值。
針對勝利油田東營北帶豐深1與鹽227區塊沙四下砂礫巖體地層巖石研磨性彊、可鑽性差、機械鑽速低、鑽頭壽命短的技術難題,開展瞭鏇流PDC鑽頭箇性化設計與應用研究。通過室內實驗,優選齣瞭適閤該地層特點的PDC切削齒類型;通過電腦模擬,優化瞭鑽頭的冠部輪廓、切削結構和切削齒後傾角設計;研製齣鏇轉射流噴嘴,設計併試製瞭水力與機械聯閤破巖的新型PDC鑽頭。在豐深1-平1井的砂礫巖體地層中進行瞭鑽井試驗,與其他類型PDC鑽頭相比,機械鑽速提高瞭46.8%,單隻鑽頭進呎提高瞭69.6%;與牙輪鑽頭相比,機械鑽速提高瞭48.1%,單隻鑽頭進呎提高瞭156.5%。在鹽227井工廠砂礫巖體井段推廣應用也取得瞭明顯的提速效果,機械鑽速提高26%,平均單隻鑽頭進呎提高102 m。研究成果對PDC鑽頭箇性化設計具有一定的藉鑒意義,對硬的彊研磨性地層鑽井提速具有推廣應用價值。
침대성리유전동영북대봉심1여염227구괴사사하사력암체지층암석연마성강、가찬성차、궤계찬속저、찬두수명단적기술난제,개전료선류PDC찬두개성화설계여응용연구。통과실내실험,우선출료괄합해지층특점적PDC절삭치류형;통과전뇌모의,우화료찬두적관부륜곽、절삭결구화절삭치후경각설계;연제출선전사류분취,설계병시제료수력여궤계연합파암적신형PDC찬두。재봉심1-평1정적사력암체지층중진행료찬정시험,여기타류형PDC찬두상비,궤계찬속제고료46.8%,단지찬두진척제고료69.6%;여아륜찬두상비,궤계찬속제고료48.1%,단지찬두진척제고료156.5%。재염227정공엄사력암체정단추엄응용야취득료명현적제속효과,궤계찬속제고26%,평균단지찬두진척제고102 m。연구성과대PDC찬두개성화설계구유일정적차감의의,대경적강연마성지층찬정제속구유추엄응용개치。
In view of the technical challenges like strong abrasiveness of rocks in lower glutenite formations of Shasi Section in Fengshen-1 Block and Yan-227 Block of Shengli Oilifeld in the northern zone of Dongying, poor drillability, low ROP and short life of drilling bits, the individual design of rotational lfow PDC bits and their application research were carried out. Through indoor experiment, the type of PDC cutting teeth suitable for such formations was selected.The design of the crown proifle of the bit, its cutting structure and the caster angle of cutting teeth was optimized.A rotary jet nozzle was developed, and a new PDC bit was designed and trial-produced which breaks the rocks jointly by hydraulic and mechanical forces. A drilling experiment was conducted in glutenite formation in Ping 1-Well of Fengshen-1 Block. Compared with other types of PDC bits, its ROP is increased by 46.8%, and footage of single bit is up by 69.6%. Compared with roller bit, its ROP is increased by 48.1% and footage of single bit is up by 156.5%. Promotion and application of this bit in glutenite interval in Well Yan 227 also result in signiifcant speeding effectiveness, for example, the ROP was up by 26% and the average footage of single bit was up by 102 m. The research ifndings are of some guiding signiifcance to the individual design of PDC bits and are of promotion value for accelerating in formations with strong abrasiveness.