本文選題：鉆井技術　切入點：PDC鉆頭　出處：《東北石油大學》2017年碩士論文　論文類型：學位論文

【摘要】：深井、超深井鉆井技術是一個國家鉆井技術發(fā)展水平的標志。美國和歐洲的深井鉆井技術水平一直處于世界領先水平。中石油近年來在深井機械鉆速、鉆井周期、單井鉆頭用量等方面都取得了很大進步,同時在深井鉆井裝備上也有了很大發(fā)展。但是同世界先進水平相比,中石油在復雜深井鉆井水平方面還有很大差距。深部地層防斜打直問題和深部硬地層快速鉆進問題是深井、超深井鉆井中兩大技術難題,是制約深井、超深井鉆井發(fā)展的技術關鍵。深部井眼巖石力學的研究,特別是深部井眼巖石可鉆性和巖石各向異性的研究,是解決深井、超深井鉆井關鍵技術的重要課題。文章充分調研了國內外深井、超深井鉆井狀況,分析深井、超深井鉆井存在的主要技術難題、鉆井巖石力學在深井、超深井中的應用狀況、深井、超深井鉆井的關鍵技術及鉆井巖石力學在深井、超深井鉆井中的作用,分析了深部巖石力學在深井、超深井鉆井中的井眼穩(wěn)定技術、井斜控制技術、高效破巖技術和地層壓力的鉆前定量預測等關鍵技術上的發(fā)展前景。針對松遼盆地北部深井地質特點,結合以往大慶油田深井鉆井實際,提出從鉆頭選型及噴嘴組合、鉆具組合設計、鉆井參數優(yōu)選、鉆井液體系選擇等方面著手提高深井鉆井速度。7口深井鉆井實踐表明,采取上述四項配套的深井鉆井技術措施后,平均鉆井速度可提高5.84%~77.90%。本文闡述了螺桿加PDC鉆頭復合鉆進技術及其應用效果。結果表明,該技術在大慶長垣地區(qū)鉆井中可用于中深部地層的快速鉆進,大傾角易斜地層中的防斜快打,定向井中造完斜后原鉆具的直接穩(wěn)斜鉆進和深井、小井眼中的高效鉆進,對提高機械鉆速,縮短建井周期,節(jié)約鉆井成本,加快勘探開發(fā)步伐具有重要意義。
[Abstract]:Deep well drilling technology is a symbol of the development level of drilling technology in a country. The level of deep well drilling technology in the United States and Europe has always been in the world's leading level. Great progress has been made in the use of single-well drill bits, and great progress has also been made in drilling equipment for deep wells. But compared with the advanced level in the world, PetroChina still has a big gap in the drilling level of complex deep wells. The problem of anti-slanting and straightening in deep formations and the problem of rapid drilling in deep hard formations are two major technical problems in deep well drilling and ultra-deep well drilling, which restrict deep wells. The research on rock mechanics of deep borehole, especially the study of drillability and anisotropy of rock in deep borehole, is to solve the problem of deep well drilling. This paper investigates the drilling conditions of deep wells and ultra-deep wells at home and abroad, analyzes the main technical problems existing in deep well drilling and ultra-deep well drilling, and the application of drilling rock mechanics in deep well and ultra deep well. The key technology of deep well and ultra-deep well drilling and the role of drilling rock mechanics in deep well drilling and ultra-deep well drilling are analyzed. The hole stabilization technology and well deviation control technology in deep well drilling and ultra-deep well drilling are analyzed. According to the geological characteristics of deep wells in the north of Songliao Basin, combined with the practice of deep well drilling in Daqing Oilfield in the past, the selection of drill bit and the combination of nozzles are put forward. The drilling practice of drilling tool combination design, drilling parameters optimization, drilling fluid system selection, etc., to improve drilling speed of 7. 7 deep wells shows that, after adopting the above four matching deep well drilling technical measures, The average drilling speed can be increased by 5.84% and 77.90%. In this paper, the combined drilling technology with screw and PDC bit and its application effect are described. The results show that the technology can be used for rapid drilling in the middle and deep formation in Daqing Changyuan area. To improve the mechanical drilling speed, shorten the construction period and save the drilling cost, the anti-slant and quick drilling in the formation with large dip angle, the direct stable drilling of the original drilling tool and the deep well drilling in the directional well, and the high efficiency drilling in the small hole, can improve the drilling speed, shorten the construction period, and save the drilling cost. It is of great significance to speed up the pace of exploration and development.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TE245
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本文編號：1644268